期刊
PHYSICAL REVIEW LETTERS
卷 86, 期 23, 页码 5389-5392出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.86.5389
关键词
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The magnetic anisotropy in antiferromagnetic 500 Angstrom thick NiO films, before and after the establishment of an exchange bias field with Co84Fe16 ferromagnetic layers, was measured using magnetic linear dichroism in soft x-ray absorption. Both < 111 > textured NiO and untextured NiO films show exchange-bias induced in-plane magnetic anisotropy of nearly equal magnitude and with the Ni moment axis being nearly parallel to the exchange bias field direction. These results represent the first observation of the key step in the exchange biasing process, namely, repopulation of the antiferromagnetic domains whose magnetization axis is closest to the exchange bias field direction.
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