Comparative study of room-temperature ferromagnetism in Cu-doped ZnO nanowires enhanced by structural inhomogeneity
Comparative study of room-temperature ferromagnetism in Cu-doped ZnO nanowires enhanced by structural inhomogeneity
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DOI：
10.1002/adma.200703149
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发表时间：
2008-09-17
影响因子：
29.4
通讯作者：
Wu, Tom
中科院分区：
文献类型：
--
作者：
Xing, Guo Zhong;Yi, Jia Bao;Wu, Tom
采用两种不同的方法制备了Cu掺杂ZnO纳米线，并对其磁性进行了比较研究。与使用常规气相传输方法的直接生长相比，退火ZnO/Cu核/壳结构导致显著增强的室温铁磁性（见图）。结构不均匀性通过促进束缚磁极化子的形成而增强铁磁性。
Cu-doped ZnO nanowires are prepared using two different approaches, and a comparative study of their magnetic properties is carried out. Compared with direct growth using a conventional vapor transport method, annealing a ZnO/Cu core/shell structure leads to significantly enhanced room-temperature ferromagnetism (see figure). Structural inhomogeneity boosts the ferromagnetism by promoting the formation of bound magnetic polarons.