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Magnetics
Publications
(2004 - 2009)
(For reprints of any of
these publications or those published prior to 2004, please contact Paulo
Freitas or Susana Cardoso
Freitas)
2004:
-
“Universal and scaled relaxation of interacting magnetic nanoparticles”, Xi
Chen, S.Sahoo, W.Kleemann, S.Cardoso, and P.P.Freitas, Phys.Rev.B 70,
172411(2004)
-
“TEM
evidence of the growth of a magnetite layer acting as a spin filter in CoFe/Al2O3/CoFe
magnetic tunnel junction “, E. Snoeck, V. Serin, R. Fourmeaux,
Z. Zhang and P. P. Freitas , J. Appl. Phys 96,
pp.3307-3311, Sept. 2004.
-
“Low
current blocking temperature writing of double barrier MRAM cells”, Jianguo
Wang and P.P.Freitas, IEEE Trans. Magn, 40, pp.2622-2624, July
2004.
-
“Current driven resistance changes in low resistance x area magnetic
tunnel junctions with ultra-thin Al-Ox barriers”, A. Deac,
O. Redon, R. C. Sousa, B. Dieny, and J. P. Nozières , Z. Zhang, Y. Liu, and
P. P. Freitas , J.Appl.Phys., 95, 6792 (2004).
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“Tunneling hot spots and heating in magnetic tunnel junctions”, R. C. Sousa,
I. L. Prejbeanu, D. Stanescu, B. Rodmacq, O. Redon, and B. Dieny , Jianguo
Wang and P. P. Freitas , J.Appl.Phys., 95, 6783 (2004).
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“Superferromagnetic domain state dynamics in discontinuous CoFe/Al2O3
multilayers”, O.Petracic, O.Sichelschmidt, Ch.Binek, W.Kleemann, A.Glatz,
T.Nattermann, S.Cardoso, and P.P.Freitas,
J.Magn. Magn.
Mater., 272-276,
e1201-e1203 (2004).
-
“Radiation of spin waves by a single micrometer-sized magnetic element”,
V.E.Demidov, S.O.Demokritov, B.Hillebrands, M.Laufenberg, P.P.Freitas,
Appl.Phys.Lett., 85,
pp.2866-2868, (2004)
-
“The
electronic properties of sputtered chromium and iron oxide films”, G.Goodlet,
S.Fate, S.Cardoso, P.P.Freitas, A.M.Simoes, M.G.Ferreira, M. da Cunha Belo,
Corr. Science, 46,
pp.1479-1499, 2004
-
“Planar Hall effect sensor for magnetic micro- and nanobead detection”, L.
Ejsing , M. F. Hansen, A. K. Menon , H. A. Ferreira, D. L. Graham and P. P.
Freitas, Appl.Phys.Lett., 84,
pp.4729-4731, (2004). (selected for the May 31, 2004 issue of Virtual
Journal of Nanoscale Science & Technology)
-
“Design, fabrication ,and analysis of a spin-valve based current sensor”,
C.Reig, D.Ramirez, F.Silva, J.Bernardo, P.P.Freitas, Sensors and Actuators
A, 115,
pp.259-266, (2004).
-
“A
novel spin valve bridge sensor for current sensing”, J.Pelegri, D.Ramirez,
P.P.Freitas, Wanjun Ku, IEEE Trans. Instr.and Meas.
53, pp.877-880, (2004).
-
“Low-current blocking temperature writing of double barrier MRAM cells”,
Jianguo Wang and P.P.Freitas, Appl.Phys.Lett.,
84, pp.945-947 (2004).
-
“Exchange bias of MnPt/CoFe films prepared by ion beam deposition”,
M.Rickart, P.P.Freitas, I.G.Trindade, G.Proudfoot, M.davis, D.Pearson,
N.P.Barradas, E.Alves, M.Salgueiro, N.Muga, J.Ventura. J.B.Sousa,
J.Appl.Phys., 95,
pp.6317-6323, (2004).
-
“Ferromagnetic coupling field reduction in CoFeB tunnel junctions prepared
by Ion Beam”, S.Cardoso, R.Ferreira, P.P.Freitas, M.MacKenzie, J.Chapman,
J.Ventura, J.B.Sousa, IEEE Trans.Magn.,
40, pp. 2272-2274, (2004).
-
“He-RBS, He-ERDA and heavy ion-ERDA analysis of Si/Ta70A/CoFe35A/HfAlOx/CoFe35A/Ta30A
systems”, N.P.Barradas, V.Matias, A.D.Sequeira, J.C.Soares, U.Kreissig,
J.Wang, P.P.Freitas, Nucl. Instrum. Methods B ,
219-220, pp.742-746 (2004).
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 ,
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“The effect of pinhole formation/growth on the tunnel magnetoresistance of
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Wisniowski, P.; Freitas,
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“Full Wheatstone bridge spin-valve based sensors for IC currents
monitoring”, M.D. Cubells-Beltrán, C. Reig, D. Ramírez, S. Cardoso, P. P.
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“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)
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“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.
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“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)
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“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,
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“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.;
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“Field detection in MgO magnetic tunnel junctions with superparamagnetic
free layer and magnetic flux concentrators”, J.
M. Almeida and P. P. Freitas , J.
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07E722 (2009)
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“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.
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023502 (2009)
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“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,
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“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,
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“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)
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