???global.info.a_carregar???
Identification

Personal identification

Full name
Ricardo Ferreira

Citation names

  • Ferreira, Ricardo

Author identifiers

Ciência ID
3411-902C-40E1
ORCID iD
0000-0003-0953-2225

Telephones

Mobile phone
  • 967934221 (Personal)

Addresses

  • Rua Egas Moniz, nº6, 4715-181, Braga, Braga, Portugal (Personal)

Websites

Knowledge fields

  • Exact Sciences - Physical Sciences - Condensed Matter Physics
Education
Degree Classification
2008/04/11
Concluded
 PhD degree in Physics Engineering (Doutoramento)
Instituto Superior Técnico Departamento de Física, Portugal
"Ion Beam Deposited Magnetic Spin Tunnel Junctions targeting HDD Read Heads, Non-volatileMemories and Magnetic Field Sensor Applications" (THESIS/DISSERTATION)
Affiliation

Science

Category
Host institution 		Employer
2011/07/11 - Current Coordinating Researcher (Research) International Iberian Nanotechnology Laboratory, Portugal
2008/04/11 - 2011/01/31 Postdoc (Research) INESC Microsistemas e Nanotecnologias, Portugal
Projects

Grant

Designation Funders
2021/01 - 2025/02 DEEP OSCILLATORY NEURAL NETWORKS COMPUTING AND LEARNING THROUGH THE DYNAMICS OF RF NEURONS INTERCONNECTED BY RF SPINTRONIC SYNAPSES
101017098
 European Commission
2020/10 - 2024/09 Weighted Spintronic-Nano-Oscillator-based Neuromorphic Computing System Assisted by laser for Cognitive Computing
899559
 European Commission
2020/09 - 2023/09 PRODUTECH 4 S&C: PRODUTECH SUSTENTÁVEL & CIRCULAR
POCI-01-0247-FEDER-046102
 PT2020
2018/07 - 2021/07 NOVAMAG – Novel magnetic textures in heavy metal/ferromagnet multilayers
POCI-01-0145-FEDER-030085
 Fundação para a Ciência e a Tecnologia: PT
2017/11 - 2020/09 INFANTE: Satellite for maritime applications and communications from constellations
POCI-01-0247-FEDER-024534
 PT2020
2017/11 - 2020/09 PRODUTECH-SIF – Solutions for the Industry of the Future
POCI-01-0247-FEDER-024541
 PT2020
2017/04 - 2020/01 MAGLINE: Desenvolvimento e Validação Industrial do Processo de Fabricação de Sensores TMR
POCI-01-0247-FEDER-017865
 PT2020
2013/01 - 2016/12 MicrOwave Spintronics as an AlternatIve Path to Components and Systems for Telecommunications, Storage and Security Applications
317950
 European Commission
2012/12 - 2016/11 Spin Currents
316657
 European Commission
2013/07 - 2016/06 SpinCal: Spintronics and spin-caloritronics in magnetic nanosystems
EXL04
 EURAMET European Metrology Programme for Innovation and Research
2012/07 - 2014/12 PERPENDICULAR - Advanced STT-MRAM Devices Exploring Perpendicular Magnetization Materials
Provided by PTCRIS: 118236
 Fundação para a Ciência e a Tecnologia
2011/04 - 2014/09 SCOMagNO : SINCRONIZAÇÃO EM FREQUENCIA DE UM OSCILADOR RF CMOS POR UM NANO-OSCILADOR BASEADO EM TORQUE POR TRANSFERÊNCIA DE SPIN
Provided by PTCRIS: 112672
 Fundação para a Ciência e a Tecnologia
Outputs

Publications

Book chapter
  1. Martins, V. C.; Cardoso, F. A.; Loureiro, J.; Mercier, M.; Germano, J.; Cardoso, S.; Ferreira, R.; et al. "Integrated spintronic platforms for biomolecular recognition detection". 150-175. 2008.
    10.1063/1.2956811
  2. Teixeira, JM; Silva, RFA; Ventura, J; Pereira, A; Araujo, JP; Amado, M; Carpinteiro, F; et al. "Short-range effects and magnetization reversal in Co80Fe20 thin films: a MOKE magnetometry/domain imaging and AMR study". 1145-1149. 2006.
    10.4028/WWW.SCIENTIFIC.NET/MSF.514-516.1145
Journal article
  1. Rogerio Dionisio; Pedro Torres; Armando Ramalho; Ricardo Ferreira. "Magnetoresistive Sensors and Piezoresistive Accelerometers for Vibration Measurements: A Comparative Study". Journal of Sensor and Actuator Networks (2021): https://www.mdpi.com/2224-2708/10/1/22.
    10.3390/jsan10010022
  2. Danijela Markovic; Nathan Leroux; Alice Mizrahi; Juan Trastoy; Vincent Cros; Paolo Bortolotti; Leandro Martins; et al. "Detection of the Microwave Emission from a Spin-Torque Oscillator by a Spin Diode". Physical Review Applied 13 4 (2020): https://doi.org/10.1103/PhysRevApplied.13.044050.
    10.1103/PhysRevApplied.13.044050
  3. S. Jiang; M. Ahlberg; S. Chung; A. Houshang; R. Ferreira; P. P. Freitas; J. Åkerman. "Magnetodynamics in orthogonal nanocontact spin-torque nano-oscillators based on magnetic tunnel junctions". Applied Physics Letters 115 15 (2019): 152402-152402. https://doi.org/10.1063/1.5121356.
    10.1063/1.5121356
  4. Tarequzzaman, M.; Bohnert, T.; Decker, M.; Costa, J. D.; Borme, J.; Lacoste, B.; Paz, E.; et al. "Spin torque nano-oscillator driven by combined spin injection from tunneling and spin Hall current". Communications Physics (2019): https://publons.com/publon/21530735/.
    10.1038/S42005-019-0119-7
  5. Boehnert, T.; Paz, E.; Ferreira, R.; Freitas, P. P.. "Magnetic tunnel junction thermocouple for thermoelectric power harvesting". Physics Letters A (2018): https://publons.com/publon/10557063/.
    10.1016/J.PHYSLETA.2018.02.029
  6. Yang, H. F.; Hu, X. K.; Sievers, S.; Boehnert, T.; Tarequzzaman, M.; Costa, J. D.; Ferreira, R.; Bieler, M.; Schumacher, H. W.. "The magnetic tunnel junction as a temperature sensor for buried nanostructures". Journal of Applied Physics (2018): https://publons.com/publon/14401392/.
    10.1063/1.5049890
  7. Yang, H. F.; Garcia-Sanchez, F.; Hu, X. K.; Sievers, S.; Bohnert, T.; Costa, J. D.; Tarequzzaman, M.; et al. "Excitation and coherent control of magnetization dynamics in magnetic tunnel junctions using acoustic pulses". Applied Physics Letters (2018): https://publons.com/publon/13786537/.
    10.1063/1.5037780
  8. Tarequzzaman, M.; Bohnert, T.; Jenkins, A. S.; Borme, J.; Paz, E.; Ferreira, R.; Freitas, P. P.. "Influence of MgO Tunnel Barrier Thickness on the Output Power of Three-Terminal Spin Hall Nano-Oscillators". IEEE Transactions on Magnetics (2018): https://publons.com/publon/3073337/.
    10.1109/TMAG.2018.2831242
  9. Tarequzzaman, M.; Jenkins, A. S.; Bohnert, T.; Borme, J.; Martins, L.; Paz, E.; Ferreira, R.; Freitas, P. P.. "Broadband voltage rectifier induced by linear bias dependence in CoFeB/MgO magnetic tunnel junctions". Applied Physics Letters (2018): https://publons.com/publon/12807194/.
    10.1063/1.5029363
  10. Ferreira, Ricardo. "Reading magnetic ink patterns with magnetoresistive sensors". AIP Advances (2018): https://publons.com/publon/12807193/.
    10.1063/1.5007693
  11. Costa, J. D.; Serrano-Guisan, S.; Lacoste, B.; Jenkins, A. S.; Bohnert, T.; Tarequzzaman, M.; Borme, J.; et al. "High power and low critical current density spin transfer torque nano-oscillators using MgO barriers with intermediate thickness". Scientific Reports 7 (2017): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000406889500066&KeyUID=WOS:000406889500066.
    10.1038/s41598-017-07762-z
  12. Vidal, E. G.; Munoz, D. R.; Arias, S. I. R.; Moreno, J. S.; Cardoso, S.; Ferreira, R.; Freitas, P.. "Electronic Energy Meter Based on a Tunnel Magnetoresistive Effect (TMR) Current Sensor". Materials 10 10 (2017): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000414639000029&KeyUID=WOS:000414639000029.
    10.3390/ma10101134
  13. Bohnert, T.; Serrano-Guisan, S.; Paz, E.; Lacoste, B.; Ferreira, R.; Freitas, P. P.. "Magnetic tunnel junctions with integrated thermometers for magnetothermopower measurements". Journal of Physics-Condensed Matter 29 18 (2017): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000398312700001&KeyUID=WOS:000398312700001.
    10.1088/1361-648X/aa63ab
  14. Bohnert, T.; Dutra, R.; Sommer, R. L.; Paz, E.; Serrano-Guisan, S.; Ferreira, R.; Freitas, P. P.. "Influence of the thermal interface resistance on the thermovoltage of a magnetic tunnel junction". Physical Review B 95 10 (2017): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000399139300004&KeyUID=WOS:000399139300004.
    10.1103/PhysRevB.95.104441
  15. Silva, A. V.; Ferreira, R.; Paz, E.; Leitao, D. C.; Devolder, T.; Cardoso, S.; Freitas, P. P.. "Thermal FMR Spectral Characterization of Very Low RA In-Plane MgO Magnetic Tunnel Junctions". Ieee Transactions on Magnetics 53 11 (2017): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000413981300019&KeyUID=WOS:000413981300019.
    10.1109/tmag.2017.2707798
  16. Martins, L.; Ventura, J.; Ferreira, R.; Freitas, P. P.. "Optimization of the buffer surface of CoFeB/MgO/CoFeB-based magnetic tunnel junctions by ion beam milling". Applied Surface Science 424 (2017): 58-62. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000410608500010&KeyUID=WOS:000410608500010.
    10.1016/j.apsusc.2017.02.112
  17. Yang, H. F.; Hu, X. K.; Liebing, N.; Boehnert, T.; Costa, J. D.; Tarequzzaman, M.; Ferreira, R.; et al. "Electrical measurement of absolute temperature and temperature transients in a buried nanostructure under ultrafast optical heating". Applied Physics Letters (2017): https://publons.com/publon/4910609/.
    10.1063/1.4985434
  18. Kreissig, Martin; Lebrun, R.; Protze, F.; Merazzo, K. J.; Hem, J.; Vila, L.; Ferreira, R.; et al. "Vortex spin-torque oscillator stabilized by phase locked loop using integrated circuits". AIP Advances (2017): https://publons.com/publon/12514909/.
    10.1063/1.4976337
  19. Gaspar, Joao; Fonseca, Helder; Paz, Elvira; Martins, Marco; Valadeiro, Joao; Cardoso, Susana; Ferreira, Ricardo; Freitas, Paulo P.. "Flexible Magnetoresistive Sensors Designed for Conformal Integration". IEEE Transactions on Magnetics (2017): https://publons.com/publon/2054490/.
    10.1109/TMAG.2016.2623669
  20. Costa, Margaret; Tarequzzaman, Mohammad; Ferreira, Ricardo; Cardoso, Susana; Gaspar, Joao; Freitas, Paulo P.. "Towards High-Resolution Scanning Magnetoresistance Microscopy". IEEE 12TH INTERNATIONAL CONFERENCE ON NANO/MICRO ENGINEERED AND MOLECULAR SYSTEMS (NEMS) (2017): https://publons.com/publon/12807192/.
    10.1109/NEMS.2017.8016977
  21. Ferreira, Ricardo. "Spin transfer driven resonant expulsion of a magnetic vortex core for efficient rf detector". AIP Advances (2017): https://publons.com/publon/12514907/.
    10.1063/1.4973389
  22. Ferreira, Ricardo. "Advanced NDT Inspection Tools for Titanium Surfaces Based on High-Performance Magnetoresistive Sensors". IEEE Transactions on Magnetics (2017): https://publons.com/publon/2054489/.
    10.1109/TMAG.2016.2636807
  23. Knudde, S.; Farinha, G.; Leitao, D. C.; Ferreira, R.; Cardoso, S.; Freitas, P. P.. "AlOx barrier growth in magnetic tunnel junctions for sensor applications". Journal of Magnetism and Magnetic Materials 412 (2016): 181-184. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000375133800026&KeyUID=WOS:000375133800026.
    10.1016/j.jmmm.2016.04.008
  24. Romera, M.; Talatchian, P.; Lebrun, R.; Merazzo, K. J.; Bortolotti, P.; Vila, L.; Costa, J. D.; et al. "Enhancing the injection locking range of spin torque oscillators through mutual coupling". Applied Physics Letters 109 25 (2016): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000391857200016&KeyUID=WOS:000391857200016.
    10.1063/1.4972346
  25. Paz, E.; Ferreira, R.; Freitas, P. P.. "Linearization of Magnetic Sensors With a Weakly Pinned Free-Layer MTJ Stack Using a Three-Step Annealing Process". Ieee Transactions on Magnetics 52 7 (2016): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000379924800099&KeyUID=WOS:000379924800099.
    10.1109/tmag.2016.2525772
  26. Freitas, P. P.; Ferreira, R.; Cardoso, S.. "Spintronic Sensors". Proceedings of the Ieee 104 10 (2016): 1894-1918. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000385371800008&KeyUID=WOS:000385371800008.
    10.1109/jproc.2016.2578303
  27. Ravelo Arias, Sergio Ivan; Ramirez Munoz, Diego; Cardoso, Susana; Ferreira, Ricardo; Peixeiro de Freitas, Paulo Jorge. "Total ionizing dose (TID) evaluation of magnetic tunnel junction (MTJ) current sensors". Sensors and Actuators a-Physical 225 (2015): 119-127. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=CCC&KeyUT=CCC:000352666100015&KeyUID=CCC:000352666100015.
  28. Valadeiro, J. P.; Amaral, J.; Leitao, D. C.; Ferreira, R.; Cardoso, S. F.; Freitas, P. J. P.. "Strategies for pTesla Field Detection Using Magnetoresistive Sensors With a Soft Pinned Sensing Layer". Ieee Transactions on Magnetics 51 1 (2015): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000349446800047&KeyUID=WOS:000349446800047.
    10.1109/tmag.2014.2352115
  29. Sievers, Sibylle; Liebing, Niklas; Serrano-Guisan, Santiago; Ferreira, Ricardo; Paz, Elvira; Caprile, Ambra; Manzin, Alessandra; et al. "Toward Wafer Scale Inductive Characterization of Spin-Transfer Torque Critical Current Density of Magnetic Tunnel Junction Stacks". Ieee Transactions on Magnetics 51 1 (2015): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000349446800002&KeyUID=WOS:000349446800002.
    10.1109/tmag.2014.2357808
  30. Caprile, Ambra; Manzin, Alessandra; Coisson, Marco; Pasquale, Massimo; Schumacher, Hans W.; Liebing, Niklas; Sievers, Sybille; et al. "Static and Dynamic Analysis of Magnetic Tunnel Junctions With Wedged MgO Barrier". Ieee Transactions on Magnetics 51 1 (2015): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000349446800048&KeyUID=WOS:000349446800048.
    10.1109/tmag.2014.2359077
  31. Gaspar, J.; Fonseca, H.; Paz, E.; Costa, M.; Martins, M.; Ferreira, R.; Cardoso, S.; Freitas, P.; Ieee,. "Fabrication and Mechanical Characterization of Flexible Devices with Sensors with Magnetoresistance Responses above 150%". 2015 Ieee Magnetics Conference (Intermag) (2015): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000381606000065&KeyUID=WOS:000381606000065.
  32. Costa, J. D.; Serrano-Guisan, S.; Borme, J.; Deepak, F. L.; Tarequzzaman, M.; Paz, E.; Ventura, J.; Ferreira, R.; Freitas, P. P.. "Impact of MgO Thickness on the Performance of Spin-Transfer Torque Nano-Oscillators". Ieee Transactions on Magnetics 51 11 (2015): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000364770500032&KeyUID=WOS:000364770500032.
    10.1109/tmag.2015.2441141
  33. Costa, Margaret; Gaspar, Joao; Ferreira, Ricardo; Paz, Elvira; Fonseca, Helder; Martins, Marco; Cardoso, Susana; Freitas, Paulo P.. "Integration of Magnetoresistive Sensors With Atomic Force Microscopy Cantilevers for Scanning Magnetoresistance Microscopy Applications". Ieee Transactions on Magnetics 51 11 (2015): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000364770500395&KeyUID=WOS:000364770500395.
    10.1109/tmag.2015.2448612
  34. Costa, D.; Serrano-Guisan, S.; Paz, E.; Borme, J.; Teixeira, J.; Ventura, J.; Ferreira, R.; Freitas, P.; Ieee,. "Large amplitude Spin Transfer Torque Nano-Oscillators implemented with intermediate thickness MgO barriers in the 10-30 Omega mu m(2) range". 2015 Ieee Magnetics Conference (Intermag) (2015): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000381606000355&KeyUID=WOS:000381606000355.
  35. Leitao, Diana C.; Silva, Ana V.; Paz, Elvira; Ferreira, Ricardo; Cardoso, Susana; Freitas, Paulo P.. "Magnetoresistive nanosensors: controlling magnetism at the nanoscale". Nanotechnology 27 4 (2015): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000366825000011&KeyUID=WOS:000366825000011.
    10.1088/0957-4484/27/4/045501
  36. Ravelo Arias, Sergio Ivan; Ramirez Munoz, Diego; Cardoso, Susana; Ferreira, Ricardo; Peixeiro de Freitas, Paulo Jorge. "Total ionizing dose (TID) evaluation of magnetic tunnel junction (MTJ) current sensors". Sensors and Actuators a-Physical 225 (2015): 119-127. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000352666100015&KeyUID=WOS:000352666100015.
    10.1016/j.sna.2015.01.021
  37. Ravelo Arias, S. I.; Ramirez Munoz, D.; Cardoso, S.; Ferreira, R.; Freitas, P.. "Note: A non-invasive electronic measurement technique to measure the embedded four resistive elements in a Wheatstone bridge sensor". Review of Scientific Instruments 86 6 (2015): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000357690300064&KeyUID=WOS:000357690300064.
    10.1063/1.4923280
  38. Costa, M.; Gaspar, J.; Ferreira, R.; Paz, E.; Fonseca, H.; Martins, M.; Cardoso, S.; Freitas, P.; Ieee,. "Integration of Magnetoresistive Sensors with Atomic Force Microscopy Cantilevers for Scanning Magnetoresistance Microscopy Applications". 2015 Ieee Magnetics Conference (Intermag) (2015): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000381606001033&KeyUID=WOS:000381606001033.
  39. Cardoso, Filipe A.; Rosado, Luis S.; Franco, Fernando; Ferreira, Ricardo; Paz, Elvira; Cardoso, Susana F.; Ramos, Pedro M.; Piedade, Moises; Freitas, Paulo J. P.. "Improved Magnetic Tunnel Junctions Design for the Detection of Superficial Defects by Eddy Currents Testing". Ieee Transactions on Magnetics 50 11 (2014): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000349465900356&KeyUID=WOS:000349465900356.
    10.1109/tmag.2014.2326959
  40. Leitao, D. C.; Paz, E.; Silva, A. V.; Moskaltsova, A.; Knudde, S.; Deepak, F. L.; Ferreira, R.; Cardoso, S.; Freitas, P. P.. "Nanoscale Magnetic Tunnel Junction Sensing Devices With Soft Pinned Sensing Layer and Low Aspect Ratio". Ieee Transactions on Magnetics 50 11 (2014): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000349465900286&KeyUID=WOS:000349465900286.
    10.1109/tmag.2014.2320606
  41. Hou, Z.; Silva, A. V.; Leitao, D. C.; Ferreira, R.; Cardoso, S.; Freitas, P. P.. "Micromagnetic and magneto-transport simulations of nanodevices based on MgO tunnel junctions for memory and sensing applications". Physica B-Condensed Matter 435 (2014): 163-167. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000330134700040&KeyUID=WOS:000330134700040.
    10.1016/j.physb.2013.09.039
  42. Paz, E.; Serrano-Guisan, S.; Ferreira, R.; Freitas, P. P.. "Room temperature direct detection of low frequency magnetic fields in the 100 pT/Hz(0.5) range using large arrays of magnetic tunnel junctions". Journal of Applied Physics 115 17 (2014): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000335643700522&KeyUID=WOS:000335643700522.
    10.1063/1.4859036
  43. Bao, X. Q.; Ferreira, R.; Paz, E.; Leitao, D. C.; Silva, A.; Cardoso, S.; Freitas, P. P.; Liu, L. F.. "Ordered arrays of tilted silicon nanobelts with enhanced solar hydrogen evolution performance". Nanoscale 6 4 (2014): 2097-2101. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000330796700016&KeyUID=WOS:000330796700016.
    10.1039/c3nr05360a
  44. Cardoso, F. A.; Rosado, L.; Ferreira, R.; Paz, E.; Cardoso, S.; Ramos, P. M.; Piedade, M.; Freitas, P. P.. "Magnetic tunnel junction based eddy current testing probe for detection of surface defects". Journal of Applied Physics 115 17 (2014): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000335643700537&KeyUID=WOS:000335643700537.
    10.1063/1.4864045
  45. Leitao, D. C.; Silva, A. V.; Ferreira, R.; Paz, E.; Deepack, F. L.; Cardoso, S.; Freitas, P. P.. "Linear nanometric tunnel junction sensors with exchange pinned sensing layer". Journal of Applied Physics 115 17 (2014): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000335643700547&KeyUID=WOS:000335643700547.
    10.1063/1.4869163
  46. Guo, D. W.; Cardoso, F. A.; Ferreira, R.; Paz, E.; Cardoso, S.; Freitas, P. P.. "MgO-based magnetic tunnel junction sensors array for non-destructive testing applications". Journal of Applied Physics 115 17 (2014): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000335643700534&KeyUID=WOS:000335643700534.
    10.1109/tmag.2014.2352115 10.1063/1.4863933
  47. Cardoso, S.; Leitao, D. C.; Gameiro, L.; Cardoso, F.; Ferreira, R.; Paz, E.; Freitas, P. P.. "Magnetic tunnel junction sensors with pTesla sensitivity". Microsystem Technologies-Micro-and Nanosystems-Information Storage and Processing Systems 20 4-5 (2014): 793-802. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000334076600029&KeyUID=WOS:000334076600029.
    10.1007/s00542-013-2035-1
  48. Roldan, A.; Roldan, J. B.; Reig, C.; Cardoso, S.; Cardoso, F.; Ferreira, R.; Freitas, P. P.. "An in-depth noise model for giant magnetoresistance current sensors for circuit design and complementary metal-oxide-semiconductor integration". Journal of Applied Physics 115 17 (2014): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000335643700535&KeyUID=WOS:000335643700535.
    10.1063/1.4865771
  49. Silva, Ana V.; Leitao, Diana C.; Huo, Zhiwei; Macedo, Rita J.; Ferreira, Ricardo; Paz, Elvira; Deepak, Francis Leonard; Cardoso, Susana; Freitas, Paulo P.. "Switching Field Variation in MgO Magnetic Tunnel Junction Nanopillars: Experimental Results and Micromagnetic Simulations". Ieee Transactions on Magnetics 49 7 (2013): 4405-4408. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000322483200336&KeyUID=WOS:000322483200336.
    10.1109/TMAG.2013.2252330
  50. Lopes, Antonio; Cardoso, Susana; Ferreira, Ricardo; Paz, Elvira; Deepak, Francis L.; Sanchez, Jaime; Ramirez, Diego; Ravelo, Sergio I.; Freitas, Paulo P.. "MgO Magnetic Tunnel Junction Electrical Current Sensor With Integrated Ru Thermal Sensor". Ieee Transactions on Magnetics 49 7 (2013): 3866-3869. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000322483200202&KeyUID=WOS:000322483200202.
    10.1109/TMAG.2013.2246550
  51. Ventura, J.; Teixeira, J. M.; Paz, E.; Amaral, J. S.; Costa, J. D.; Apolinario, A.; Araujo, J. P.; et al. "The influence of annealing on the bimodal distribution of blocking temperatures of exchange biased bilayers". Physica Status Solidi-Rapid Research Letters 7 9 (2013): 676-680. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000327822100018&KeyUID=WOS:000327822100018.
    10.1002/pssr.201307257
  52. Amaral, Jose; Pinto, Vitor; Costa, Tiago; Gaspar, Joao; Ferreira, Ricardo; Paz, Elvira; Cardoso, Susana; Freitas, Paulo P.. "Integration of TMR Sensors in Silicon Microneedles for Magnetic Measurements of Neurons". Ieee Transactions on Magnetics 49 7 (2013): 3512-3515. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000322483200112&KeyUID=WOS:000322483200112.
    10.1109/TMAG.2013.2239274
  53. Arias, S. I. R.; Munoz, D. R.; Moreno, J. S.; Cardoso, S.; Ferreira, R.; de Freitas, P. J. P.. "Fractional Modeling of the AC Large-Signal Frequency Response in Magnetoresistive Current Sensors". Sensors 13 12 (2013): 17516-17533. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000330220600088&KeyUID=WOS:000330220600088.
    10.3390/S131217516
  54. Cardoso, S.; Gameiro, L.; Leitao, D. C.; Cardoso, F.; Ferreira, R.; Paz, E.; Freitas, P. P.; et al. "Magnetic tunnel junction sensors with pTesla sensitivity for biomedical imaging". Smart Sensors, Actuators, and Mems Vi 8763 (2013): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000323607500039&KeyUID=WOS:000323607500039.
    10.1117/12.2018070
  55. Delgado, F.; Lopez, K.; Ferreira, R.; Fernandez-Rossier, J.. "Intrinsic spin noise in MgO magnetic tunnel junctions". Applied Physics Letters 102 6 (2013): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000315053300073&KeyUID=WOS:000315053300073.
    10.1063/1.4791594
  56. Ferreira, Ricardo; Paz, Elvira; Freitas, Paulo P.; Ribeiro, Joao; Germano, Jose; Sousa, Leonel. "2-Axis Magnetometers Based on Full Wheatstone Bridges Incorporating Magnetic Tunnel Junctions Connected in Series". Ieee Transactions on Magnetics 48 11 (2012): 4107-4110. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000310194400354&KeyUID=WOS:000310194400354.
    10.1109/TMAG.2012.2202381
  57. Ferreira, Ricardo; Cardoso, Susana; Freitas, Paulo P.; Petrova, Rumyana; McVitie, Stephen. "Influence of ion beam assisted deposition parameters on the growth of MgO and CoFeB". Journal of Applied Physics 111 7 (2012): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000303282401013&KeyUID=WOS:000303282401013.
    10.1063/1.3678319
  58. Sanchez, J.; Ramirez, D.; Ravelo, S. I.; Lopes, A.; Cardoso, S.; Ferreira, R.; Freitas, P. P.. "Electrical Characterization of a Magnetic Tunnel Junction Current Sensor for Industrial Applications". Ieee Transactions on Magnetics 48 11 (2012): 2823-2826. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000310194400024&KeyUID=WOS:000310194400024.
    10.1109/TMAG.2012.2196422
  59. Janeiro, Ricardo J.; Gameiro, Luis; Lopes, Antonio; Cardoso, Susana; Ferreira, Ricardo; Paz, Elvira; Freitas, Paulo P.. "Linearization and Field Detectivity in Magnetic Tunnel Junction Sensors Connected in Series Incorporating 16 nm-Thick NiFe Free Layers". Ieee Transactions on Magnetics 48 11 (2012): 4111-4114. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000310194400355&KeyUID=WOS:000310194400355.
    10.1109/TMAG.2012.2202887
  60. Ferreira, R.; Paz, E.; Freitas, P. P.; Wang, J.; Xue, S.. "Large Area and Low Aspect Ratio Linear Magnetic Tunnel Junctions With a Soft-Pinned Sensing Layer". Ieee Transactions on Magnetics 48 11 (2012): 3719-3722. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000310194400253&KeyUID=WOS:000310194400253.
    10.1109/TMAG.2012.2200468
  61. Marinho, Z.; Cardoso, S.; Chaves, R.; Ferreira, R.; Melo, L. V.; Freitas, P. P.. "Three dimensional magnetic flux concentrators with improved efficiency for magnetoresistive sensors". Journal of Applied Physics 109 7 (2011): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000289952100406&KeyUID=WOS:000289952100406.
    10.1063/1.3556946
  62. Chaves, R. C.; Cardoso, S.; Ferreira, R.; Freitas, P. P.. "Low aspect ratio micron size tunnel magnetoresistance sensors with permanent magnet biasing integrated in the top lead". Journal of Applied Physics 109 7 (2011): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000289952100391&KeyUID=WOS:000289952100391.
    10.1063/1.3537926
  63. Freitas, Paulo; Cardoso, Susana; Ferreira, Ricardo; Martins, Veronica; Guedes, Andre; Cardoso, Filipe; Loureiro, Joana; et al. "OPTIMIZATION AND INTEGRATION OF MAGNETORESISTIVE SENSORS". Spin (2011): https://publons.com/publon/2054566/.
    10.1142/S2010324711000070
  64. Ferreira, Ricardo. "A Non-Invasive Thermal Drift Compensation Technique Applied to a Spin-Valve Magnetoresistive Current Sensor". Sensors (2011): https://publons.com/publon/2054559/.
    10.3390/S110302447
  65. Yang, Jie; Macedo, Rita J.; Debs, Mariam G.; Ferreira, Ricardo; Cardoso, Susana; Freitas, Paulo J. P.; Teixeira, Jose M.; Ventura, Joao O.. "Spin Transfer on Low Resistance-Area MgO-Based Magnetic Tunnel Junctions Prepared by Ion Beam Deposition". Ieee Transactions on Magnetics 46 6 (2010): 2002-2004. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000278037800188&KeyUID=WOS:000278037800188.
    10.1109/TMAG.2010.2041753
  66. Macedo, R.; Borme, J.; Ferreira, R.; Cardoso, S.; Freitas, P. P.; Mendis, B.; MacKenzie, M.. "Nanofabrication of 30 nm Devices Incorporating Low Resistance Magnetic Tunnel Junctions". Journal of Nanoscience and Nanotechnology 10 9 (2010): 5951-5957. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000279836400064&KeyUID=WOS:000279836400064.
    10.1166/jnn.2010.2600
  67. Ventura, J.; Teixeira, J. M.; Araujo, J. P.; Sousa, J. B.; Ferreira, R.; Freitas, P. P.; Langer, J.; Ocker, B.; Maass, W.. "Influence of Pinholes on MgO-Tunnel Junction Barrier Parameters Obtained from Current-Voltage Characteristics". Journal of Nanoscience and Nanotechnology 10 4 (2010): 2731-2734. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000273984900071&KeyUID=WOS:000273984900071.
    10.1166/jnn.2010.1377
  68. Loureiro, J.; Ferreira, R.; Cardoso, S.; Freitas, P. P.; Germano, J.; Fermon, C.; Arrias, G.; et al. "Toward a magnetoresistive chip cytometer: Integrated detection of magnetic beads flowing at cm/s velocities in microfluidic channels". Applied Physics Letters 95 3 (2009): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000268405300094&KeyUID=WOS:000268405300094.
    10.1063/1.3182791
  69. Guerrero, R.; Pannetier-Lecoeur, M.; Fermon, C.; Cardoso, S.; Ferreira, R.; Freitas, P. P.. "Low frequency noise in arrays of magnetic tunnel junctions connected in series and parallel". Journal of Applied Physics 105 11 (2009): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000267053200102&KeyUID=WOS:000267053200102.
    10.1063/1.3139284
  70. Silva, Victor; Fernandes, Jorge R.; Oliveira, Luis B.; Neto, Horacio C.; Ferreira, Ricardo; Freitas, Susana; Freitas, Paulo P.; Napieralski, A. "Thermal Assisted Switching Magnetic Tunnel Junctions as FPGA Memory Elements". Mixdes 2009: Proceedings of the 16th International Conference Mixed Design of Integrated Circuits and Systems (2009): 332-336. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000275900300065&KeyUID=WOS:000275900300065.
  71. Loureiro, J.; Fermon, C.; Pannetier-Lecoeur, M.; Arrias, G.; Ferreira, R.; Cardoso, S.; Freitas, P. P.. "Magnetoresistive Detection of Magnetic Beads Flowing at High Speed in Microfluidic Channels". Ieee Transactions on Magnetics 45 10 (2009): 4873-4876. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000270149700373&KeyUID=WOS:000270149700373.
    10.1109/TMAG.2009.2026287
  72. Ferreira, Ricardo. "Full Wheatstone Bridge Spin-Valve Based Sensors for IC Currents Monitoring". IEEE Sensors Journal (2009): https://publons.com/publon/192988/.
    10.1109/JSEN.2009.2030880
  73. Cardoso, F. A.; Germano, J.; Ferreira, R.; Cardoso, S.; Martins, V. C.; Freitas, P. P.; Piedade, M. S.; Sousa, L.. "Detection of 130 nm magnetic particles by a portable electronic platform using spin valve and magnetic tunnel junction sensors". Journal of Applied Physics 103 7 (2008): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000255043200118&KeyUID=WOS:000255043200118.
    10.1063/1.2836713
  74. Cardoso, S.; Macedo, R. J.; Ferreira, R.; Augusto, A.; Wisniowski, P.; Freitas, P. P.. "Ion beam assisted deposition of MgO barriers for magnetic tunnel junctions". Journal of Applied Physics 103 7 (2008): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000255043200161&KeyUID=WOS:000255043200161.
    10.1063/1.2833823
  75. Teixeira, J. M.; Pereira, A. M.; Ventura, J.; Silva, R. F. A.; Carpinteiro, F.; Araujo, J. P.; Sousa, J. B.; et al. "Magnetic characterization of MnPt/CoFe bilayers using the MOKE technique". Vacuum 82 12 (2008): 1486-1488. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000259460300035&KeyUID=WOS:000259460300035.
    10.1016/j.vacuum.2008.03.072
  76. Pogorelov, Yu. G.; Lopes, J. V.; Ventura, J. O.; Freitas, P. P.; Ferreira, R.; Araujo, J. P.; Sousa, J. B.. "Spin-dependent migration-conduction model for ultra-thin magnetic tunnel junctions". Journal of Magnetism and Magnetic Materials 316 2 (2007): E957-E959. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000248150000358&KeyUID=WOS:000248150000358.
    10.1016/j.jmmm.2007.03.152
  77. Cardoso, F. A.; Ferreira, R.; Cardoso, S.; Conde, J. P.; Chu, V.; Freitas, P. P.; Germano, J.; et al. "Noise characteristics and particle detection limits in diode plus MTJ matrix elements for biochip applications". Ieee Transactions on Magnetics 43 6 (2007): 2403-2405. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000246706200106&KeyUID=WOS:000246706200106.
    10.1109/TMAG.2007.893705
  78. Ventura, J.; Ferreira, R.; Teixeira, J. M.; Pereira, A. M.; Araujo, J. P.; Pogorelov, Y.; Sousa, J. B.; Freitas, P. P.. "Transport properties of low resistance underoxidized magnetic tunnel junctions". Ieee Transactions on Magnetics 43 6 (2007): 2815-2817. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000246706200241&KeyUID=WOS:000246706200241.
    10.1109/TMAG.2007.893699
  79. Ventura, J.; Araujo, J. P.; Sousa, J. B.; Ferreira, R.; Freitas, P. P.. "Competing spin-dependent conductance channels in underoxidized tunnel junctions". Applied Physics Letters 90 3 (2007): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000243582400049&KeyUID=WOS:000243582400049.
    10.1063/1.2430482
  80. Freitas, P. P.; Ferreira, R.; Cardoso, S.; Cardoso, F.. "Magnetoresistive sensors". Journal of Physics-Condensed Matter 19 16 (2007): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000246552000022&KeyUID=WOS:000246552000022.
    10.1088/0953-8984/19/16/165221
  81. Guedes, A.; Almeida, J. M.; Cardoso, S.; Ferreira, R.; Freitas, P. P.. "Improving magnetic field detection limits of spin valve sensors using magnetic flux guide concentrators". Ieee Transactions on Magnetics 43 6 (2007): 2376-2378. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000246706200097&KeyUID=WOS:000246706200097.
    10.1109/TMAG.2007.893119
  82. Ferreira, R; Wisniowski, P; Freitas, PP; Langer, J; Ocker, B; Maass, W. "Tuning of MgO barrier magnetic tunnel junction bias current for picotesla magnetic field detection". Journal of Applied Physics 99 8 (2006): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000237404200499&KeyUID=WOS:000237404200499.
    10.1063/1.2173636
  83. Ventura, J; Teixeira, J; Pogorelov, YG; Sousa, JB; Ferreira, R; Freitas, PP. "Spin-dependent two-level resistance fluctuations in underoxidized tunnel junctions". Journal of Applied Physics 99 8 (2006): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000237404200802&KeyUID=WOS:000237404200802.
    10.1063/1.2150428
  84. Ferreira, H. A.; Cardoso, F. A.; Ferreira, R.; Cardoso, S.; Freitas, P. P.. "Magnetoresistive DNA chips based on ac field focusing of magnetic labels". Journal of Applied Physics 99 8 (2006): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000237404200631&KeyUID=WOS:000237404200631.
    10.1063/1.2162342
  85. Freitas, PP; Ferreira, H; Ferreira, R; Cardoso, S; Sellmyer, D; Skomski, R. "Nanostructures for spin electronics". Advanced Magnetic Nanostructures (2006): 403-460. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=CCC&KeyUT=CCC:000236041700014&KeyUID=CCC:000236041700014.
    10.1007/0-387-23316-4_14
  86. Teixeira, JM; Silva, RFA; Ventura, J; Pereira, AM; Carpinteiro, F; Araujo, JP; Sousa, JB; et al. "Domain imaging, MOKE and magnetoresistance studies of CoFeB films for MRAM applications". Materials Science and Engineering B-Solid State Materials For Advanced Technology 126 2-3 (2006): 180-186. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000235115900016&KeyUID=WOS:000235115900016.
    10.1016/j.mseb.2005.09.031
  87. Ventura, J.; Ferreira, R.; Sousa, J. B.; Freitas, P. P.. "Dielectric breakdown in underoxidized magnetic tunnel junctions: Dependence on oxidation time and area". Ieee Transactions on Magnetics 42 10 (2006): 2658-2660. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000240888700134&KeyUID=WOS:000240888700134.
    10.1109/tmag.2006.879734
  88. Ferreira, Ricardo; Cardoso, Susana; Freitas, Paulo P.. "Dynamic thermomagnetic writing in tunnel junction cells incorporating two GeSbTe thermal barriers". Ieee Transactions on Magnetics 42 10 (2006): 2718-2720. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000240888700154&KeyUID=WOS:000240888700154.
    10.1109/TMAG.2006.879725
  89. Cardoso, S; Ferreira, R; Silva, F; Freitas, PP; Melo, LV; Sousa, RC; Redon, O; MacKenzie, M; Chapman, JN. "Double-barrier magnetic tunnel junctions with GeSbTe thermal barriers for improved thermally assisted magnetoresistive random access memory cells". Journal of Applied Physics 99 8 (2006): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000237404200621&KeyUID=WOS:000237404200621.
    10.1063/1.2162813
  90. Almeida, J. M.; Ferreira, R.; Freitas, P. P.; Langer, J.; Ocker, B.; Maass, W.. "1/f noise in linearized low resistance MgO magnetic tunnel junctions". Journal of Applied Physics 99 8 (2006): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000237404200108&KeyUID=WOS:000237404200108.
    10.1063/1.2172179
  91. Ferreira, R.; Freitas, P. P.; MacKenzie, M.; Chapman, J. N.. "Low-resistance magnetic tunnel junctions prepared by partial remote plasma oxidation of 0.9 nm Al barriers". Applied Physics Letters 86 19 (2005): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000229397900050&KeyUID=WOS:000229397900050.
    10.1063/1.1925318
  92. Ferreira, R; Freitas, PP; MacKenzie, M; Chapman, JN. "Low resistance tunnel junctions with remote plasma underoxidized thick barriers". Journal of Applied Physics 97 10 (2005): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000230168300170&KeyUID=WOS:000230168300170.
    10.1063/1.1845951
  93. Dennis, CL; Tiusan, CV; Ferreira, RA; Gregg, JF; Ensell, GJ; Thompson, SM; Freitas, PP. "Tunnel barrier fabrication on Si and its impact on a spin transistor". Journal of Magnetism and Magnetic Materials 290 (2005): 1383-1386. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000228837900153&KeyUID=WOS:000228837900153.
    10.1016/j.jmmm.2004.11.443
  94. Franco, N; Yavorovskiy, IV; Fonseca, A; Gouveia, JAA; Marques, C; Alves, E; Ferreira, RA; Freitas, PP; Barradas, NP. "Rutherford backscattering and X-ray reflectivity analysis of tunnel barriers". Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions With Materials and Atoms 240 1-2 (2005): 365-370. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000233208400071&KeyUID=WOS:000233208400071.
    10.1016/j.nimb.2005.06.215
  95. Cardoso, S; Cavaco, C; Ferreira, R; Pereira, L; Rickart, M; Freitas, PP; Franco, N; Gouveia, J; Barradas, NP. "Characterization of CoFeB electrodes for tunnel junctions". Journal of Applied Physics 97 10 (2005): http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000230168300183&KeyUID=WOS:000230168300183.
    10.1063/1.1853833
  96. MacKenzie, M; Chapman, JN; Cardoso, S; Li, HH; Ferreira, R; Freitas, PP. "Analytical electron microscopy of advanced multilayer structures for magnetic devices". Journal of Physics D-Applied Physics 38 12 (2005): 1869-1874. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000230886700004&KeyUID=WOS:000230886700004.
    10.1088/0022-3727/38/12/003
  97. Cardoso, S.; Ferreira, R.; Freitas, P. P.; MacKenzie, M.; Chapman, J.; Ventura, J. O.; Sousa, J. B.; Kreissig, U.. "Ferromagnetic coupling field reduction in CoFeB tunnel junctions deposited by ion beam". Ieee Transactions on Magnetics 40 4 (2004): 2272-2274. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000223446700093&KeyUID=WOS:000223446700093.
    10.1109/tmag.2004.832147
  98. Cardoso, S.; Zhang, Z. Z.; Li, H. H.; Ferreira, R.; Freitas, P. P.; Wei, P.; Soares, J. C.; Snoeck, E.; Batlle, X.. "Characterization of nano-oxide layers fabricated by ion beam oxidation". Ieee Transactions on Magnetics 38 5 (2002): 2755-2757. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000178867200284&KeyUID=WOS:000178867200284.
    10.1109/tmag.2002.802863
  99. Freitas, PP; Cardoso, S; Sousa, R; Ku, WJ; Ferreira, R; Chu, V; Conde, JP. "Spin dependent tunnel junctions for memory and read-head applications". Ieee Transactions on Magnetics 36 5 (2000): 2796-2801. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000167371700207&KeyUID=WOS:000167371700207.
    10.1109/20.908593
  100. Cardoso, S; Ferreira, R; Freitas, PP; Wei, P; Soares, JC. "Influence of Ta antidiffusion barriers on the thermal stability of tunnel junctions". Applied Physics Letters 76 25 (2000): 3792-3794. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000087567700041&KeyUID=WOS:000087567700041.
    10.1063/1.126783
  101. Cardoso, S; Gehanno, V; Ferreira, R; Freitas, PP. "Ion beam deposition and oxidation of spin-dependent tunnel junctions". Ieee Transactions on Magnetics 35 5 (1999): 2952-2954. http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000083151100233&KeyUID=WOS:000083151100233.
    10.1109/20.801044
Activities

Supervision

Thesis Title
Role 		Degree Subject (Type)
Institution / Organization
2017/01/01 - 2022/06/01 Non-volatile artificial synapse based on a vortex nano-oscillator
Supervisor
 Engenharia Física (PhD)
Universidade do Porto Faculdade de Ciências, Portugal
2019/09/01 - 2020/11/30 Implementation of Wireless Communication for IoT with Vortex Nano-Oscillators
Co-supervisor
Universidade do Porto Faculdade de Engenharia, Portugal
2014/01/01 - 2018/01/01 TUNNELING AND SPIN HALL CURRENT INDUCED NANO-OSCI L LATORS
Co-supervisor
 Engenharia Física (PhD)
Instituto Superior Técnico Departamento de Física, Portugal
2013/01/01 - 2017/01/01 SPIN TRANSFER TORQUE NANO-OSCILLATORS : FABRICAT ION, CHARACT ERIZAT ION AND DYNAMICS
Co-supervisor
 Engenharia Física (PhD)
Universidade do Porto Faculdade de Ciências, Portugal
2015/01/01 - 2016/01/01 CoFeB/MgO/CoFeB based magnetic tunnel junctions for memory applications : optimization of the fabrication process and magnetic properties
Co-supervisor
 Engenharia Física (Master)
Universidade do Porto Faculdade de Ciências, Portugal