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题名: Exchange bias in two-step artificially grown one-dimensional hybrid Co-BiFeO3 core-shell nanostructures
作者: Ali, S. S.; Li, W. J.; Javed, K.; Shi, D. W.; Riaz, S.; Zhai, G. J.; Han, X. F.
作者部门: 空间技术部
通讯作者: Ali, SS (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
关键词: hybrid core-shell nanostructures ; electrodeposition ; exchange bias
刊名: NANOTECHNOLOGY
ISSN号: 0957-4484
出版日期: 2016
卷号: 27, 期号:4, 页码:45708
收录类别: SCI
项目资助者: State Key Project of Fundamental Research of Ministry of Science and Technology (MOST) [2010CB934401] ; National Natural Science Foundation (NSFC) [11374351, 11434014] ; NSFC-JSPS Scientific Cooperation Program
英文摘要: One-dimensional core-shell nanostructures consisting of a ferromagnetic cobalt core and a multiferroic BiFeO3 (BFO) shell were fabricated by an artificial two-step methodology. The coupling between the ferromagnetic core and multiferroic shell manifests a significant exchange bias effect which gives a clear demonstration of the anti-ferromagnetic functionality of the BFO shell material. Exchange biases of 30 Oe and 60 Oe are observed at 300 K and at 5 K, respectively. Superparamagnetic contributions at lower temperatures play an important role in contributing to overall magnetic behavior. Dominant shape anisotropy causes parallel alignment of the easy magnetization axis along the axis of core-shell nanowires. A coherent mode of the magnetization reversal mechanism is observed by the angular dependence of coercivity (H-c). This versatile two-step methodology can be employed to fabricate and investigate many other hybrid nanostructures leading to a vast scope of investigation for researchers.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/5670
Appears in Collections:空间技术部_期刊论文

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