Spin glass transition in a thin-film NiO/permalloy bilayer

Article

关键词: RANDOM-FIELD MODEL;    EXCHANGE BIAS;    ANISOTROPY;   

DOI  :  10.1103/PhysRevB.97.054402

来源: SCIE

【 摘 要 】

We experimentally study magnetization aging in a thin-film NiO/permalloy bilayer. Aging characteristics are nearly independent of temperature below the exchange bias blocking temperature T-B, but rapidly vary above it. The dependence on the magnetic history qualitatively changes across T-B. The observed behaviors are consistent with the spin glass transition at T-B, with significant implications for magnetism and magnetoelectronic phenomena in antiferromagnet/ferromagnet bilayers.

【 授权许可】

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