Contact    Internal   Webmail
  INESC MN

 Microsistemas & Nanotecnologias

 

 

 

HOME

 

RESEARCH

 

PEOPLE

 

INFRASTRUCTURE 

 

SERVICES

 

PUBLICATIONS

 

NEWS/POSITIONS

 

SEMINARS

 

 

 

 

 

 

 

 

 

Magnetics

Publications (since 2005)

(For reprints of any of these publications or those published prior to 2004, please contact Paulo Freitas or Susana Cardoso Freitas)

 

2005

  • “Superferromagnetic domain state of a discontinuous metal insulator multiplayer”, S.Bedanta, O.Petracic, E.Ketzinger, W.Kleemann, U.Rucker, A.Paul, Th.Bruckel, S.Cardoso, P.P.Freitas, Phys.Rev.B 72, pp.024419 (2005)

  • “Electromigration in thin tunnel junctions with ferromagnetic/non ferromagnetic electrodes: nanoconstrictions, local heating, and direct and wind forces”, J.Ventura, J.B.Sousa, Y.Liu, Z.Zhang, and P.P.Freitas, Phys.Rev.B 72, 094432 (2005)

  • “Two dimensional patterns of spin wave radiation by rectangular spin valve elements”, V.E.Demidov, B.Hillebrands, S.O.Demokritov, M.Laufenberg, and P.P.Freitas, J.Appl.Phys. 97, pp.10a717 (2005)

  • “Interlayer dipolar interactions in multilayered granular films”, G.N.Kalazei, Y.G.Pogorelov, M.D.Costa, V.O.Golub, J.B.Sousa, P.P.Freitas, S.Cardoso, and P.E.Wigen, J.Appl.Phys., 97, 10a723 (2005).

  • “Effective bit addressing times for precessional switching of magnetic memory cells”, H.W Scumacher, C.Chappert, R.C.Sousa, and P.P.Freitas, J.Appl.Phys., 97, 123907, (2005)

  • “Low resistance magnetic tunnel junctions prepared by partial remote plasma oxidation of 0.9nm Al barriers”, R.Ferreira, P.P.Freitas, M.Mackenzie, and J.N.Chapman, Appl.Phys.Lett. 86, pp.192502 (2005)

  • “Analytical electron microscopy of advanced multiplayer structures for magnetic devices”, M.MacKenzie, J.N.Chapman, S.Cardoso, H.Li, R.Ferreira, P.P.Freitas, J.Phys.D, 38, pp.1869-1874, (2005)

  • “Exchange coupling of bilayers and synthetic antiferromagnets pinned to PtMn” , M.Rickart, A.Guedes, N.Franco, N.P.Barradas, P.Diaz, M.Mackenzie, J.N.Chapman. P.P.Freitas, Eur. Phys.Journ. B, 45, 207 (2005).

  • “Exchange bias in ordered antiferromagnets by rapid thermal anneal without magnetic field”, M.Rickart, A.Guedes, N.Franco, N.P.Barradas, P.Diaz, M.Mackenzie, J.N.Chapman. P.P.Freitas,  J.Phys.D, 38, pp.2151-2155, (2005).

  • “Dynamic heating in sub-micron size magnetic tunnel junctions with exchange biased storage layer”, M. Kerekes, R.C. Sousa, I.L. Prejbeanu, O. Redon, U.Ebels, C. Baraduc, B. Dieny, J-P Nozières, P.P.Freitas, P.Xavier, J.Appl.Phys., 97, 10P501 (2005).

  • “Blocking temperature in erxchange coupled MnPt/CoFe bilayers and synthetic antiferromagnets”, M.Rickart, A.Guedes, J.Ventura, J.B.Sousa, P.P.Freitas, J.Appl.Phys. 97, 10k110 (2005).

  • “Characterization of CoFeB electrodes for tunnel junctions”, S.Cardoso, C.Cavaco, R.Ferreira, L.Pereira, M.Rickart, P.P.Freitas, N.Franco, J.Gouveia, N.P.Barradas, J.Appl.Phys. 97, 10c916 (2005).

  • "Relaxation phenomena In current Induced switching In thin magnetic tunnel junctions", J.Ventura, J.P.Araujo, F.Carpinteiro, J.B.Sousa, Y.Liu, Z.Zhang, P.P.Freitas, J.Magn.Magn.Mater. 290-291, pp.1067-1070 (2005).

  • “Tunnel barrier fabrication on Si and its impact on a spin transistor”, C.L.Dennis, C.V.Tiusan, R.A.Ferreira, J.F.Gregg, G.J.Ensell, S.M.Thomson, P.P.Freitas, J.Magn.Magn.Mater., 290-291, pp.1383-1386 (2005).

  • “Bias field dependence of current induced precessional magnetization reversal”, H.W.Schumacher, C.Chappert, T.Devolder, R.C.Sousa, P.P.Freitas, J.Magn.Magn.Mater, 290-292, pp.362-365 (2005).

  • “Low-resistance tunnel junctions with remote plasma under-oxidized thick barriers”, R.Ferreira, P.P.Freitas, M.McKenzie, J.Chapman, J. Appl. Phys. 97, 10c903 (2005).

  • “A round robin characterisation of the thickness and composition of thin to ultra-thin AlNO films”, N.P. Barradas, N. Added, W.M. Arnoldbik, I. Bogdanović-Radović, W. Bohne, S. Cardoso, C. Danner, N. Dytlewski, P.P. Freitas, M. Jakšić, C. Jeynes, C. Krug, W. N. Lennard, S. Lindner, Ch. Linsmeier, Z. Medunić, P. Pelicon, R.P. Pezzi, C. Radtke, J. Röhrich, T. Sajavaara, T.D.M. Salgado, F.C. Stedile, M.H. Tabacniks, I. Vickridge, Nucl. Instr.Meth.B, 227, pp.397-419 (2005)

  • “Analysis of nanolayered samples with a He beam”, N.Franco, J.A.A.Gouveia, E.Alves, S.Cardoso, P.P.Freitas and N.P.Barradas, Nucl. Instr.Meth.B  241, pp.454-458 (2005).

  • “Rutherford Backscattering and X-tray reflectivity  analysis of tunnel barriers”,  N.Franco, Y.V.Yavarovski, A.Fonseca, J.A.A.Gouveia, C.Marques, E.Alves, R.A.Ferreira, P.P.Freitas, N.P.Barradas, Nuclr. Instr. Meth.B 240, pp.365-370 (2005).

 

2006

  • “Study of synthetic ferrimagnet-synthetic antiferromagnet structures for magnetic sensor application”, A.Guedes, M.J.Mendes, P.P.Freitas, and J.L.Martins, J.Appl.Phys., vol.99, pp.08B703-08B705, April 2006

  •  “Dynamic thermomagnetic writing in tunnel junction cells incorporating two GeSbTe thermal barriers”, R.Ferreira, S.Cardoso, P.P.Freitas, IEEE Trans.Magn. , vol.42, pp.2718-2720, October 2006.

  • “Study of the dynamic magnetic properties of soft CoFeB films”, C.Bilzer, T.Devolder, Joo-Von Kim, G.Counil, C.Chappert, S.Cardoso, and P.P.Freitas, J.Appl.Phys, vol.100,pp.053903 (2006)

  • “Nanoscopic processes of current induced switching in thin tunnel junctions”, J.Ventura, J.P.Abreu, J.B.Sousa, Y.Liu, Z. Zhang, P.P.Freitas, IEEE Trans. On Nanotechnology. Vol.5, pp.142-148, March 2006

  • “Nanocharacterization of magnetic structures”, M. MacKenzie, J.N.Chapman, S.Cardoso, M.Rickart, P.Diaz, and P.P.Freitas, J.Physics, Conf Series, vol.26, pp.169-174, 2006.

  • “Nanostructires for Spintronics”, P.P.Freitas, H.Ferreira, R.Ferreira, S.Cardoso, S.Van Dijken, and J.Gregg, in “Advanced Magnetic Nanostructures”, Springer Science + Business Media, Inc., N York, Eds. D.Sellmyer amd R.Skomski, pp.403-453, 2006.

  • “Spin dependent two level resistance fluctuactions in underoxidized tunnel junctions”, J.Ventura, J.Teixeira, Yu. G.Pogorelov, J.B.Sousa, R.Ferreira, P.P.Freitas, J.Appl.Phys., vol.99, pp.08T301-08T303, April 2006

  • “Double barrier magnetic tunnel junctions with GeSbTe thermal barriers for improved thermally assysted MRAM cells”, S.Cardoso, R.Ferreira, F.Silva, L.V.Melo, P.P.Freitas, J.Appl.Phys., vol.99, pp.08N901-08N903, April 2006

  • “1/f noise in linearized low resistance MgO magnetic tunnel junctions”, J.M.Almeida, R.Ferreira, P.P.Freitas, J.Langer, B.Ocker, W.Maass,  J.Appl.Phys., vol.99, pp.08B314-08B316, April 2006

  • “Crossover in heating regimes of thermally assisted magnetic memories”, R.C.Sousa, M.Kerekes, I L. Prejbeanu, O.Redon, B.Dieny, J.P.Nozieres, P.P.Freitas, J.Appl.Phys., vol.99, pp.08N904-08N906, April 2006

  • “Tuning of MgO barrier magnetic tunnel junction bias current for pT magnetic field detection”, R.Ferreira, P.Wisniowski, P.P.Freitas, J.Langer, B.Ocker, W.Maass, J.Appl.Phys., vol.99, pp.08K706-08K708, April 2006

  • Modulated magnetization depth profile in dipolarly coupled magnetic multilayers”, S.Bedanta, E.Kentzinger, O.Petracic, W.Kleemann, U.Rucker, Th.Bruckel, A.Paul, S.Cardoso and P.P.Freitas, Phys.Rev.B 74, 054426 (2006)

  • “Short-range effects and magnetization reversal in Co80Fe20 thin films: a MOKE magnetometry/domain imaging and AMR study”, J. M. Teixeira, R. F. A.Silva, J. Ventura, A. Pereira, J. P. Araujo, M. Amado, F. Carpinteiro, J. B. Sousa, S. Cardoso, R. Ferreira and P. Freitas, Mat. Sci. Forum 514-516, 1145-1149 (2006).

  • “Dielectric breakdown in underoxidized magnetic tunnel junctions: dependemce on oxidation time and area”, J.Ventura, R.Ferreira, J.B.Sousa, and P.P.Freitas, IEEE Trans. Magn., vol.42, pp.2658-2660, Oct. 2006.

  • “Domain imaging, MOKE and magnetoresistance studies of CoFeB films for MRAM applications”, J.M. Teixeira, R.F.A. Silva, J. Ventura, A.M. Pereira, F. Carpinteiro, J.P. Araújo, J.B. Sousa, S. Cardoso, R. Ferreira and P.P. Freitas, Materials Science and Engineering: B, Volume 126, Issues 2-3, 25, pp 180-186 (January 2006)

 

2007

  • “Influence of the domain structure of nano-oxide layers on the transport properties of specular spin valves”, J.Ventura, J.B.Sousa, A.Veloso, and P.P.Freitas, J.Appl.Phys., vol. 101, pp.09E502 (2007)

  • “Three state memory combining resistive and magnetic switching using tunnel junctions”, J.Ventura, A.M.Pereira, J.P.Araujo, J.B.Sousa, Z.Zhang, Y.Liu, and P.P.Freitas, J.Phys.D:Appl.Phys., vol.40, pp.5819-, 2007.

  • “Low frequency picotesla field detection using hybrid MgO based tunnel sensors”, R.C.Chaves, P.P.Freitas, B.Ocker, W.Maass, Appl.Phys.Lett.., vol.91, pp.102504 October 2007

  •  “Temperature dependence of transport properties and exchange field in NiMn based spin valves”, J.M.Teixeira, J.Ventura, B.Negulesco, J.P.Araujo, R.Fermento, J.B.Sousa, P.P.Freitas, J.Magn.Magn.Mater., vol.316, pp.e973-e976, September 2007

  • “Spin dependent migration-conduction model for ultra thin magnetic tunnel junctions”, Y.Pogorelov, J.V.Lopes, J.O.Ventura, P.P.Freitas, R.Ferreira, J.P.Araujo, J.B.Sousa, J.Magn.Magn.Mater., vol.316, pp.e957-e959, September 2007

  • “Transport properties of low resistance underoxidized magnetic tunnel junctions”, J.Ventura, R.Ferreira, J.M.Teixeira, J.P.Araujo, Y.Pogorelov, J.B.Sousa, P.P.Freitas, IEEE Trans Magn., vol.43, pp.2815-2817, June 2007

  • “Interlayer coupling and magnetoresistance of MnIr-based spin valves: dependencies on deposition rate, spacer thickness and temperature”, J.M.Teixeira, J.Ventura, J.B.Sousa, S.Cardoso, and P.P.Freitas, IEEE Trans. Magn., vol.43, pp.3143-3145, June 2007

  • “Electrical current-driven pinhole formation and insulator-metal transition in tunnel junctions”, J. Ventura, Z. Zhang, Y. Liu, J. B. Sousa and P. P. Freitas, J. Phys. Cond. Matter 19, 176207 (2007)

  • “Distribution of blocking temperatures in nano oxide layers of specular spin valves” J. Ventura, J. P. Araujo, J. B. Sousa, A. Veloso and P. P. Freitas, J. Appl. Phys., vol.101, pp.113901 (2007)

  • “Overcoming dipolar disorder in dense CoFe nanoparticle ensembles-superferromagnetism”, S,Bedanta, T.Eimuller, W.Kleemann, J.Rhensius, F.Stromberg, E.Amaladass, S.Cardoso, P.P.Freitas, Phys. Rev.Lett.,98,176601-4(2007)

  • "Vector network analyzer ferromagnetic resonance of thin films on coplanar waveguides: Comparison of different evaluation methods," C.Bilzer, T.Devolder, P.Crozat, C.Chappert, S.Cardoso, P.P.Freitas, J. Appl. Phys. 101, 074505 (2007)

  • “Improving Magnetic field detection limits of Spin Valve Sensors using magnetic flux guide concentrators”, A.Guedes, J.Almeida, and P.P.Freitas, IEEE Trans. Magn., vol.43, pp.2376-2378, June 2007.

  • “Magnetoresistive Sensors”, P.P.Freitas, R.Ferreira, S.Cardoso, and F.Cardoso, J.Physics: Condens. Matter.,vol.19, pp.165221 (2007)

  • “Competing spin dependent conductance channels in underoxidized tunnel junctions”, J.Ventura, J.P.Araujo, J.B.Sousa, R.Ferreira, P.P.Freitas, Appl.Phys.Lett., vo,.90, pp.032501-032503, January 2007.

  • “Layer and Interface Structure of CoFe/Ru Multilayers”, A. T. G. Pym, A. Lamperti, S. Cardoso, P.P.Freitas, B K Tanner, , Acta Phys Pol. Vol.112 (6) 1243 (2007)

  • “Interface stability in CoFe and CoFeB based multilayers”, A. T. G. Pym, A. Lamperti, S. Cardoso, P. P. Freitas and B. K. Tanner, , Superlattices and Microstructures 41, p. 122-126 (2007)

  • “Interface stability of magnetic tunnel barriers and electrodes”A. Lamperti, A.T.G. Pym, D.S. Eastwood, S. Cardoso, P.Wisniowski,  P.Freitas, G. Anderson, C.H. Marrows and B.K. Tanner, , Physica Status Solidi A 204, No. 8, 2778–2784 (2007)

  • “X-ray reflectivity and polarized neutron reflectivity investigations of [CoFeB/MgO]n Multilayers”M. Vadalà, M. Wolff, K. Westerholt, H. Zabel, P. Wisniowski, S. Cardoso, , Acta Phys Pol. Vol.112 (6) 1249 (2007)

  • “Polarized neutron reflectivity studies on granular Co80Fe20/Al2O3 multilayers “,S. Bedanta, E. Kentzinger, O. Petracica, W. Kleemann, U. Rücker, A. Paul, Th. Brückel, S. Cardoso and P.P. Freitas  Physica B: Condens. Matter, Vol.397, 65 (July 2007).

 

2008

  • “Pinholes and the temperature dependent transport properties of MgO-based magnetic tunnel junctions”, J. Ventura, J. M. Teixeira, J. P. Araujo, J. B. Sousa, P. Wisniowski, P. P. Freitas, Phys. Rev. B. 78, 024403 (2008).

  • “Training effect in specular spin valves”, J. Ventura, J. P. Araujo, J. B. Sousa, A. Veloso and P. P. Freitas, Phys. Rev. B.  77, 184404 (2008).

  • “Pinholes in thin low resistance MgO-based magnetic tunnel junctions probed by temperature dependent transport measurements”, J. Ventura, J. M. Teixeira, J. P. Araujo, J. B. Sousa, P. Wisniowski and P. P. Freitas, J. Appl. Phys. 103, 07A909 (2008).

  • “Field detection in single and double barrier MgO magnetic tunnel junction sensors”, J.M.Almeida, P.Wisniowski, and P.P.Freitas, J.Appl.Phys., vol.103, pp.07E922-07E925, April 2008.

  • “MgO based picotestal field sensors”, R.C.Chaves, P.P.Freitas, B.Ocker, and W.Maass, J.Appl.Phys., vol.103, pp.07E931-07E933, April 2008.

  • “Rutherman Kittel Kasuyama Yoshida and Neel contributions to the interlayer coupling of MnIr based spin valves: influence of deposition rate, roughness and spacer thickness”, J.M.Teixeira, J.Ventura, R.Fermento, J.P.Araujo, J.B.Sousa, S.Cardoso, and P.P.Freitas, J.Appl.Phys., vol.103, pp.07F319-0tF321, April 2008.

  • “Effect of CoFeB thickness and shape anisotropy on the transfer curves of MgO Magnetic Tunnel Junctions”, P.Wisniowski, S.Cardoso, P.P.Freitas, J.Appl.Phys., vol.103, pp.07A910-07A912, April 2008.

  • “Ion Beam Assisted Deposition of MgO barriers for Magnetic Tunnel Junctions”, S.Cardoso, R-J-Macedo, R.Ferreira, A.Augusto, P.Visniowsky, and P.P.Freitas, J.Appl.Phys., vol.103, pp.07A905-07A907, April 2008..

  • “Magnetoresistive based static tester for hard disk actuactors”, J.Borme, A.S.Freitas, S.Cardoso, J.M.Almeida, R.Chaves, and P.P.Freitas, J.Appl.Phys., vol.103, pp.07F537-07F539, April 2008..

  • “Detection of 130nm magnetic particles by a portable electronic platform using spin valve and magnetic tunnel junction sensors”, F. A. Cardoso, J. Germano, R. Ferreira, S. Cardoso, V. C.  Martins, P. P. Freitas, M. S. Piedade, L. Sousa, J.Appl.Phys., vol.113, pp.07A310-07A312, April 2008.

  • “Hybrid magnetoresistive/microelectromechanical devices for static field modulation and sensor 1/f noise cancellation”, A.Guedes, S.Cardoso, J.P.Conde, P.P.Freitas, S.Patil, V.Chu, J.Appl.Phys., vol.103, pp.07E924-07E926, April 2008.

  • “Magnetization reversal of nanostructured tunnel junctions from prepatterned substrates”, A.Bollero, V.Baltz, B.Dieny, B.Negulesco, M.Rickart, P.P.Freitas, J.Vogel, M.Bonfim, S.Lands, J.Appl.Phys., vol.103, pp.07C108-07C110, April 2008.

  •  “Quasi-Linear Field Amplification for magnetoresistive sensors”, I. G. Trindade, R. Fermento, J. B. Sousa, R. Chaves, S.Cardoso and P. P. Freitas, , J.Appl.Phys. 103, 103914 (2008)

  • “Hybrid MTJ-MEMS high frequency modulator for 1/f noise suppression”, A.Guedes, S.B.Patil, P.Wisniowski, V.Chu, J.P.Conde, and P.P.Freitas, IEEE Trans . Magn. , vol.44, pp.2554-2557, 2008

  • “High Sensitivity Spin Valve Sensors with AF coupled flux guides”, I.G.Trindade, J.Teixeira, R.Fermento, S.Cardoso, P.P.Freitas, IEEE Trans. Magn., vol.44, 2472-2474, 2008.

  • “Electrical isolators based on tunneling magnetoresistance technology”, C.Reig, M.D.Cubbells-Beltran, D.Ramirez, S.Cardoso, P.P.Freitas, IEEE Trans.Magn., vol.44, 4011 (2008)

  • “A Slider with an integrated microactuactor (SLIM) for second stage actuaction in hard disk drives” , H.H.Gatzen,P.P.Freitas, E.Obermeier, et al, IEEE Trans.Magn., vol.44, 3726 (2008)

  • “15-Asymmetric electromigration-driven resistive switching in tunnel junctions”, J. Ventura, J. P. Araujo, F. Carpinteiro, J. B. Sousa, Z. Zhang, Y. Liu and P. P. Freitas, J. Non-Cryst. Sol., vol.354, pp.5272-5274, 2008

  • “Low frequency noise in MgO magnetic tunnel junctions; Hooge’s parameter dependence on bias voltage”, J.M.Almeida, P.Wisniowski, and P.P.Freitas, IEEE Trans Magn., vol.44, pp.2569-2572, Nov. 2008.

  • “Structural characterization of MnNi and MnPt antiferromagnetic materials for spintronic applications”, J. Ventura, J. M. Teixeira, J. P. Araujo, J. B. Sousa, V. Amaral, B. Negulescu, M. Rickart and P. P. Freitas, J. Non-Cryst. Sol., vol.354, pp.5275-5278, 2008.

  • “Magnetic characterization of MnPt/CoFe bilayers using the MOKE technique”, J. M. Teixeira, A. M. Pereira, J. Ventura, R. F. A. Silva, F. Carpinteiro, J. P. Araujo, J. B. Sousa, M. Rickart, S. Cardoso, R.    Ferreira and P. P. Freitas, Vacuum., vol.82, pp.1486-1488, 2008.

 

2009

  • “Resistive switching in nanostructured thin films, H. Silva, H.L. Gomes, Y.G. Pogorelov, P. Stallinga , D.M. de Leeuw, J.P. Araujo, J.B. Sousa, S.C.J. Meskers, G. Kakazei, S. Cardoso, P.P. Freitas, Appl. Phys. Lett. , vol.94, 202107 (2009)

  • “The effect of pinhole formation/growth on the tunnel magnetoresistance of MgO-based magnetic tunnel junctions”, Teixeira, J. M.; Ventura, J.; Carpinteiro, F.; Araujo, J. P.; Sousa, J. B.; Wisniowski, P.; Freitas, P. P.; J. Appl.Phys., vol.106 , 073707 (2009)

  • “Full Wheatstone bridge spin-valve based sensors for IC currents monitoring”, M.D. Cubells-Beltrán, C. Reig, D. Ramírez, S. Cardoso, P. P. Freitas, IEEE Sensors Journal, vol.9, 1756 (Dec. 2009)

  • “Low frequency noise in arrays of magnetic tunnel junctions connected in series and parallel”, R. Guerrero, M. Pannetier-Lecoeur, C. Fermon, S. Cardoso, R. Ferreira and P.P. Freitas, J.Appl. Phys.,vol. 105, 113922 (2009)

  • “Control of hysteretic behaviour in flux concentrator”, I. G. Trindade, D. C. Leitão, Y. Pogorelov, J. B. Sousa, R. C. Chaves, S. Cardoso, P. P. Freitas, Appl. Phys. Lett.,vol. 94, 073501 (2009)

  • “Soft Thin Films for Flux Concentrators”, I.G.Trindade, J. Oliveira, R. Fermento, J. B. Sousa, S.Cardoso, P.P. Freitas, A. Raghunathan A, E. Snyder, IEEE Trans. Magn. 45, 168 (2009)

  • “Structural characterization and magnetic profile of annealed CoFeB/MgO multilayers”, M. Vadalá, K. Zhemenkov, M. Wolff, B.P. Toperverg, K. Westerholt, H. Zabel, P. Wisniowski, S. Cardoso and P.P.Freitas, J.Appl.Phys. 105, 113911 (2009)

  • “Effect of Buffer Layer Texture on the Crystallization of CoFeB and on the Tunnel Magnetoresistance in MgO Based Magnetic Tunnel Junctions” , Cao, J.; Kanak, J.; Stobiecki, T.; Wisniowski, P.; Freitas, P.P.; IEEE Trans. Magn., vol.45 , 3464 (2009)

  • “Field detection in MgO magnetic tunnel junctions with superparamagnetic free layer and magnetic flux concentrators”, J. M. Almeida and P. P. Freitas , J. Appl. Phys. 105, 07E722 (2009)

  •  “On chip magnetoresistive detection of resonance in MEMS cantilever”, S.B. Patil, A. Guedes, P.P. Freitas, S.Cardoso, V. Chu, J.P. Conde, Appl. Phys. Lett., Vol. 95, 023502 (2009)

  • “Magnetic and transport properties of diluted granular multilayers”, Silva, H. G. Gomes, H. L. Pogorelov, Y. G. Pereira, L. M. C. Kakazei, G. N. Sousa, J. B. Araujo, J. P. Mariano, J. F. L. Cardoso, S. Freitas, P. P., J. Appl. Phys.,  Vol.106 , 113910 (2009)

  • “Dynamic magnetization properties of a superferromagnetic metal-insulator multilayer observed by magneto-optic Kerr microscopy”,  Bedanta, S.; Rhensius, J.; Kleemann, W.; Parashar, P.; Cardoso, S.; Freitas, P. P.; J. Appl.Phys. , vol.105 , 07C306 (2009)

  • “Thermal Assisted Switching Magnetic Tunnel Junctions as FPGA memory elements”, Silva, V.; Fernandes, J.R.; Oliveira, L.B.; Neto, H.C.; Ferreira, R.; Freitas, S.; Freitas, P.P.;  Mixed Design of Integrated Circuits & Systems, 2009. MIXDES '09. MIXDES-16th International Conference , 332 (2009)

 

2010

  • Probing atomic rearrangement events in resistive switching nanostructures Ventura, J.; Araujo, J. P.; Sousa, J. B.; Liu, Y.; Zhang, Z.; Freitas, P. P.; Applied Physics Letters Volume: 96, Page(s): 043505 , 2010

  • J. Yang, S. Cardoso, P. P. Freitas, T. Devolder, and M. Ruehrig, “Stability studies of exchange bias field of Mn80Ir20/Co60Fe20B20 by network analyzer ferromagnetic resonance", Appl. Phys. Lett. 97, 132502 (2010) 

  • Roldan, C. Reig, M.D. Cubells-Beltran, J.B. Roldan, D. Ramrez, S. Cardoso, P.P. Freitas, “Analytical compact modeling of GMR based current sensors: application to power measurement at the IC level”, Solid State Electronics, Vol.54 (12), pp.1606-1612 (2010)

  • S. Bedanta, X. Chen, O. Petracic, J. Rhensius, E. Kentzinger, U. Rücker, T. Brückel, A. Doran, A. Scholl, S. Cardoso, P. P. Freitas, and W. Kleemann, “Single particle blocking and collective magnetic states in discontinuous CoFe/Al2O3 multilayers”, J. Phys. D - Appl. Phys. 43,  pp.474002 (2010)

  • V.Silva, J.R.Fernandes, L.B.Oliveira, H.C.Neto, R.Ferreira, S.Cardoso, P.P. Freitas “Thermal Assisted Switching Magnetic Tunnel Junctions as FPGA Memory Elements”, International Journal of  Microelectronics and Computer  Science 1 (1), pp.31-36 (2010)

  • J. Yang, R. Macedo, M.G.Debs, R. Ferreira, S.Cardoso, P. P. Freitas, J.M.Teixeira and  J.O.Ventura, “Spin Transfer on low resistance-area MgO-based magnetic tunnel junctions prepared by Ion beam deposition”, IEEE Trans.Magn. vol.46 (6), pp.2002, June 2010

  • H Polovy, R. Guerrero, J. Scola, M. Pannetier-Lecoeur, C. Fermon, G. Feng, K. Fahy, S.Cardoso, J.Almeida and P.P. Freitas, “Noise in MgO-based Magnetic Tunnel Junctions”, J.Magn.Magn.Mater. Vol. 322, Issues 9-12, pp. 1624-1627 (2010)

  • R. Macedo, J.Borme, R.Ferreira, S.Cardoso, P.P.Freitas, B. Mendis, M. MacKenzie, “Nanofabrication of 30nm devices incorporating low resistance magnetic tunnel junctions”, J.Nanoscience and Nanotechnology vol.10, 5951-5957 (2010).

 

2011

  • M. Donolato, E. Sogne, B.T. Dalslet, M. Cantoni, D. Petti, J. Cao, F. Cardoso, S. Cardoso, P.P. Freitas, M.F.Hansen, R. Bertacco, “On-chip measurement of the Brownian relaxation frequency of magnetic beads using magnetic tunneling junctions”, Appl. Phys. Lett. 98, pp.073702 (2011).

  • J. Sánchez Moreno, D. Ramírez Muñoz, S.Casans Berga, A. Edith Navarro Antón, S. Cardoso, P. Freitas, “A non-invasive thermal drift compensation technique applied to a spin-valve magnetoresistive current sensor”, Sensors, 11, 2447-2458 (2011)

  • R. Macedo, F.A. Cardoso, S.Cardoso, P. P. Freitas, J.Germano, M.S. Piedade, “Hybrid Antenna-Magnetoresistive Sensor for RF Field Detection”, J.Appl.Phys. 109, pp07E505 (2011); doi:10.1063/1.3537816

  • R.Chaves, S. Cardoso, R. Ferreira and P. P. Freitas,  “Low Aspect Ratio Micron Size TMR Sensors with Permanent Magnet Biasing Integrated in the Top Lead”, J.Appl.Phys. 109, 07E506 (2011); doi:10.1063/1.3537926

  • Z.Marinho, S. Cardoso, R. Chaves, R. Ferreira, L.V. Melo and P.P. Freitas,  “Improving Magnetic Flux Guide Concentrators for MR Sensors”, J.Appl.Phys. 109, pp.07E521 (2011)

  • R. Macedo, F.A. Cardoso, S.Cardoso, P. P. Freitas, J.Germano, M.S. Piedade, “Self-Powered, Hybrid Antenna-Magnetoresistive Sensor for Magnetic Field Detection”, Appl. Phys. Lett. 98, 103503 (2011)

  • J. Yang, S. Cardoso, P. P. Freitas, and T. Devolder, “Angular dependence of exchange bias in Mn80Ir20/Co60Fe20B20 bilayers”, J.Appl.Phys. 109, 07D704 (2011); doi:10.1063/1.3537951

 

Copyright © 2010 INESC MN; all rights reserved · Last update:27 October 2011 ·