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Asymmetric magnetization reversal in exchange-biased hysteresis loops
Fitzsimmons, M. R. (Los Alamos National Laboratory)
Yashar, P. (Los Alamos National Laboratory)
Leighton, C. (University of California, San Diego. Department of Physics)
Schuller, Ivan K. (University of California, San Diego. Department of Physics)
Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física)
Majkrzak, C. F. (National Institute of Standards and Technology (Estats Units d'Amèrica))
Dura, J. (National Institute of Standards and Technology (Estats Units d'Amèrica))
American Physical Society

Data: 2000
Resum: Polarized neutron reflectometry is used to probe the in-plane projection of the net-magnetization vector M of polycrystalline Fe films exchange coupled to twinned (110) MnF2 or FeF2 antiferromagnetic (AF) layers. The magnetization reversal mechanism depends upon the orientation of the cooling field with respect to the twinned microstructure of the AF, and whether the applied field is increased to (or decreased from) a positive saturating field; i. e. , the magnetization reversal is asymmetric. The reversal of the sample magnetization from one saturated state to the other occurs via either domain wall motion or magnetization rotation on opposite sides of the same hysteresis loop.
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Drets: Tots els drets reservats.
Llengua: Anglès
Document: Article ; Versió publicada
Publicat a: Physical review letters, Vol. 84, Issue 17 (April 2000) , p. 3986-3989, ISSN 1079-7114

DOI: 10.1103/PhysRevLett.84.3986

4 p, 78.3 KB

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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Grup de nanoenginyeria de materials, nanomagnetisme i nanomecànica (Gnm3)
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