期刊
APPLIED PHYSICS LETTERS
卷 101, 期 22, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4767142
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资金
- Empa
- NCCR Nanoscale Science of the University of Basel
- SNF [200021-117970]
The exchange-bias effect provides unidirectional anisotropy to ferromagnetic thin-films in GMR and TMR sensors. It is weak because it relies on an inherently compensated coupling across a ferromagnet/antiferromagnet interface. We replace the antiferromagnet with a TbFe-based perpendicular-anisotropy amorphous ferrimagnet, coupling to an adjacent ferromagnet with 13-5 mJ/m(2) for temperatures within 7.9-280 K. A large exchange-bias between 1.1 and 0.7 T in that temperature range ensues. The temperature dependence of the bias is step-like, and thus different from that of antiferromagnet-based exchange-bias systems. It suggests using this material in exchange-biased temperature assisted magnetic writing. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4767142]
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