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4 p, 325.4 KB |
Using exchange bias to extend the temperature range of square loop behavior in [Pt/Co] multilayers with perpendicular anisotropy
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Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física) ;
Suriñach, Santiago (Suriñach Cornet) (Universitat Autònoma de Barcelona. Departament de Física) ;
Garcia, F. (SPINTEC (Spin Electronics Research)) ;
Auffret, Stéphane (SPINTEC (Spin Electronics Research)) ;
Rodmacq, B. (SPINTEC (Spin Electronics Research)) ;
Dieny, B. (SPINTEC (Spin Electronics Research)) ;
Langlais, Veronique (Universitat Autònoma de Barcelona. Departament de Física) ;
Muñoz Domínguez, Juan Santiago (Universitat Autònoma de Barcelona. Departament de Física) ;
Baró, M. D.. (Universitat Autònoma de Barcelona. Departament de Física) ;
Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física)
The temperature dependence of the magnetic properties of [Pt/Co]multilayers (ML), exhibiting perpendicular anisotropy, with and without exchange biasing with an antiferromagnet(AFM) has been investigated. [...]
2005 -  10.1063/1.2139840
Applied physics letters, Vol. 87, Issue 24 (December 2005) , p. 242504/1-242504/3
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2.
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4 p, 346.4 KB |
Large exchange bias and its connection to interface structure in FeF2-Fe bilayers
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Nogués, Josep (University of California-San Diego. Physics Department) ;
Lederman, D. (University of California, San Diego. Department of Physics) ;
Moran, T. J.. (University of California, San Diego. Department of Physics) ;
Schuller, Ivan K. (University of California, San Diego. Department of Physics) ;
Rao, K. V. (Kungl. Tekniska högskolan. Department of Condensed Matter Physics) ;
American Physical Society
Large exchange bias effects (ΔE 1. 1 erg/cm2) were observed in antiferromagnetic (FeF2)-ferromagnetic (Fe) bilayers grown on MgO. The FeF2 grows along the spin-compensated (110) direction. The FeF2-Fe interface roughness was characterized using specular and diffuse x-ray diffraction and atomic force microscopy. [...]
1996 - 10.1063/1.115819
Applied physics letters, Vol. 68, Issue 22 (May 1996) , p. 3186-3188
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4 p, 299.5 KB |
Tuning exchange bias
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Miltenyi, P. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches) ;
Gierlings, M. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches) ;
Bamming, M. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches) ;
May, U. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches) ;
Güntherodt, G. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches) ;
Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física) ;
Gruyters, M. (Hahn-Meitner Institut Berlin) ;
Leighton, C. (University of California, San Diego. Department of Physics) ;
Schuller, Ivan K. (University of California, San Diego. Department of Physics) ;
American Physical Society
The exchange bias shift of the hysteresis loop, HE, in antiferromagnetic/ferromagnetic layer systems can be easily controlled (within certain limits) by cooling in zero field from different magnetization states above the antiferromagnetic Néel temperature, TN. [...]
1999 - 10.1063/1.124998
Applied physics letters, Vol. 75, Issue 15 (October 1999) , p. 2304-2306
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4 p, 289.5 KB |
Room-temperature coercivity enhancement in mechanically alloyed antiferromagnetic-ferromagnetic powders
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Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física) ;
Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física) ;
Amils Capdevila, Xavier (Universitat Autònoma de Barcelona. Departament de Física) ;
Suriñach, Santiago (Suriñach Cornet) (Universitat Autònoma de Barcelona. Departament de Física) ;
Muñoz Domínguez, Juan Santiago (Universitat Autònoma de Barcelona. Departament de Física) ;
Baró, M. D.. (Universitat Autònoma de Barcelona. Departament de Física)
The coercivity,HC, and squareness of Co powders have been enhanced at room temperature by mechanically alloying them with antiferromagneticpowders with Néel temperature, TN, above room temperature. The enhancement is maximum after field annealing above TN. [...]
1999 - 10.1063/1.125269
Applied physics letters, Vol. 75, Issue 20 (November 1999) , p. 3177-3179
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4 p, 295.3 KB |
Coercivity and squareness enhancement in ball-milled hard magnetic-antiferromagnetic composites
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Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física) ;
Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física) ;
Suriñach, Santiago (Suriñach Cornet) (Universitat Autònoma de Barcelona. Departament de Física) ;
Muñoz Domínguez, Juan Santiago (Universitat Autònoma de Barcelona. Departament de Física) ;
Baró, M. D.. (Universitat Autònoma de Barcelona. Departament de Física) ;
Chappel, E. (Laboratoire National de Champs Magnétiques Intenses) ;
Dupont, F. (Laboratoire National de Champs Magnétiques Intenses) ;
Chouteau, G. (Laboratoire National de Champs Magnétiques Intenses)
The room-temperature coercivity,HC, and squareness, MR/MS (remanence/saturation magnetizations), of permanent magnet,SmCo5powders have been enhanced by ball milling with antiferromagnetic NiO (with Néel temperature, TN=590 K). [...]
2001 - 10.1063/1.1392308
Applied physics letters, Vol. 79, Issue 8 (June 2001) , p. 1142-1144
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7.
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4 p, 306.1 KB |
Fabrication and thermal stability of arrays of Fe nanodots
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Liu, Kai (University of California, San Diego. Department of Physics) ;
Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física) ;
Leighton, C. (University of Minnesota. Department of Chemical Engineering and Materials Science) ;
Masuda, H. (Tōkyō Toritsu Daigaku. Department of Applied Chemistry) ;
Nishio, K. (Tōkyō Toritsu Daigaku. Department of Applied Chemistry) ;
Roshchin, I. V. (University of California, San Diego. Department of Physics) ;
Schuller, Ivan K. (University of California, San Diego. Department of Physics) ;
American Physical Society
We have fabricated arrays of 60-nm-size magnetic Fe nanodots over a 1-cm2 -size area using nanoporous alumina membranes as shadow masks. The size and size distribution of the nanodots correlate very well with that of the membrane pores. [...]
2002 - 10.1063/1.1526458
Applied physics letters, Vol. 81, Num. 23 (November 2002) , p. 4434-4436
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4 p, 233.4 KB |
Large anomalous enhancement of perpendicular exchange bias by introduction of a nonmagnetic spacer between the ferromagnetic and antiferromagnetic layers
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Garcia, F. (SPINTEC (Spin Electronics Research)) ;
Sort Viñas, Jordi (SPINTEC (Spin Electronics Research)) ;
Rodmacq, B. (SPINTEC (Spin Electronics Research)) ;
Auffret, Stéphane (SPINTEC (Spin Electronics Research)) ;
Dieny, B. (SPINTEC (Spin Electronics Research)) ;
American Physical Society
In (Pt/Co)n/FeMnmultilayers, the magnitude of exchange bias,HE, can be considerably enhanced by placing an ultrathin nonmagnetic Pt spacer between the multilayer (ML) and the antiferromagnetic(AFM) layer. [...]
2003 - 10.1063/1.1619562
Applied physics letters, Vol. 83, Issue 17 (October 2003) , p. 3537-3539
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9.
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4 p, 235.0 KB |
Isothermal tuning of exchange bias using pulsed fields
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Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ;
Sort Viñas, Jordi (Universitat Autònoma de Barcelona. Departament de Física) ;
Suriñach, Santiago (Suriñach Cornet) (Universitat Autònoma de Barcelona. Departament de Física) ;
Muñoz Domínguez, Juan Santiago (Universitat Autònoma de Barcelona. Departament de Física) ;
Baró, M. D.. (Universitat Autònoma de Barcelona. Departament de Física) ;
Bobo, Jean-François (Institut national des sciences appliquées de Toulouse) ;
Lüders, Ulrike Anne (Institut national des sciences appliquées de Toulouse) ;
Haanappel, E. (Laboratoire National des Champs Magnétiques Pulsés) ;
Fitzsimmons, M. R. (Los Alamos National Laboratory) ;
Hoffmann, Axel (Argonne National Laboratory. Materials Science Division) ;
Cai, J. W. (Chinese Academy of Sciences. Institute of Physics)
Exchange bias,HE, and coercivity,HC, of antiferromagnetic (AFM)/ferromagnetic bilayers can be adjusted, after deposition, at temperatures below the Néel temperature of the AFM by subjecting the samples to large pulsed fields (in excess of HPulse=550 kOe). [...]
2003 - 10.1063/1.1565711
Applied physics letters, Vol. 82, Issue 18 (April 2003) , p. 3044-3046
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4 p, 232.0 KB |
Size effects on exchange bias in sub-100 nm ferromagnetic-antiferromagnetic dots deposited on prepatterned substrates
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Baltz, Vincent (SPINTEC (Spin Electronics Research)) ;
Sort Viñas, Jordi (SPINTEC (Spin Electronics Research)) ;
Rodmacq, B. (SPINTEC (Spin Electronics Research)) ;
Dieny, B. (SPINTEC (Spin Electronics Research)) ;
Landis, S. (Commissariat à l'Énergie Atomique et aux Énergies Alternatives (França)) ;
American Physical Society
Exchange bias effects have been investigated in ferromagnetic (FM)-antiferromagnetic (AFM) square dots, with lateral sizes of 90 nm, sputtered on a prepatterned Si substrate. The magnetic behavior of the dots has been compared with that of a continuous FM-AFM bilayer with the same composition. [...]
2004 - 10.1063/1.1757646
Applied physics letters, Vol. 84, Issue 24 (May 2004) , p. 4923-4925
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