Exchange bias in single-crystalline CuO nanowires
Exchange bias in single-crystalline CuO nanowires
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DOI：
10.1063/1.3428658
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发表时间：
2010-05-10
影响因子：
4
通讯作者：
Piqueras, J.
中科院分区：
文献类型：
--
作者：
Diaz-Guerra, C.;Vila, M.;Piqueras, J.
研究了铜热氧化法生长的单晶氧化铜纳米线的交换各向异性。交换偏置场随着温度的升高而减小，并且可以通过冷却场的强度来调节。还观察到了培训效果。所得到的结果可以理解的现象学的核-壳模型，其中的CuO纳米线的核心显示反铁磁行为和周围的壳表现为自旋玻璃状系统由于未补偿的表面自旋。(C)2010年美国物理学会。[doi 10.1063/1.3428658]
Exchange anisotropy has been observed and investigated in single-crystalline CuO nanowires grown by thermal oxidation of Cu. The exchange bias field decreases by increasing temperature and can be tuned by the strength of the cooling field. A training effect has also been observed. The obtained results can be understood in terms of a phenomenological core-shell model, where the core of the CuO nanowire shows antiferromagnetic behavior and the surrounding shell behaves as a spin glass-like system due to uncompensated surface spins. (C) 2010 American Institute of Physics. [doi:10.1063/1.3428658]