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Coercivity enhancement in exchange biased systems driven by interfacial magnetic frustration
Leighton, C. (University of California, San Diego. Department of Physics)
Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física)
Jönsson-Akerman, B. J. (University of California, San Diego. Department of Physics)
Schuller, Ivan K. (University of California, San Diego. Department of Physics)
American Physical Society

Date: 2000
Abstract: We report the temperature and cooling field dependence of the coercivity of exchange biased MnF2/Fe bilayers. When the antiferromagnetic surface is in a state of maximum magnetic frustration and the net exchange bias is zero, we observe a strong enhancement of the coercivity, which is proportional to the exchange coupling between the layers. Hence, the coercivity can be tuned in a reproducible and repeatable fashion in the same sample. We propose that a frustrated interface provides local energy minima which effectively pin the propagating domain walls in the ferromagnet, leading to an enhanced coercivity.
Rights: Tots els drets reservats.
Language: Anglès
Document: article ; Versió publicada
Published in: Physical review letters, Vol. 84, Issue 15 (April 2000) , p. 3466-3469, ISSN 1079-7114

DOI: 10.1103/PhysRevLett.84.3466

4 p, 70.8 KB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group of Smart Nanoengineered Materials, Nanomechanics and Nanomagnetism (Gnm3)
Articles > Published articles

 Record created 2014-01-22, last modified 2021-06-13

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