Asymmetry of coercivity dependence on temperature in exchange-biased FeMn/Co bilayers

Authors
Wang, J Wang, WN Chen, X Zhao, HW Zhao, JG Zhan, WS
Citation
J. Wang et al., Asymmetry of coercivity dependence on temperature in exchange-biased FeMn/Co bilayers, APPL PHYS L, 77(17), 2000, pp. 2731-2733
Citations number
23
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
77
Issue
17
Year of publication
2000
Pages
2731 - 2733
Database
ISI
SICI code
0003-6951(20001023)77:17<2731:AOCDOT>2.0.ZU;2-D
Abstract
The temperature dependence of the coercivity in biased FeMn/Co bilayers is investigated. An asymmetric behavior of the left and right coercivity with varying temperature is observed. The asymmetry can be understood by taking into account the variation of the spin arrangements in the antiferromagneti c layer. The calculated results are in agreement with the experimental ones qualitatively. All these results suggest that the magnetization reversal m echanisms are different for increasing and decreasing fields. (C) 2000 Amer ican Institute of Physics. [S0003-6951(00)01743-5].