文章基本信息

标题：The exchange bias behavior of BiFeO3 nanoparticles with natural core-shell structure
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作者：Fengzhen Huang ; Xingyu Xu ; Xiaomei Lu 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2018
卷号：8
期号：1
页码：2311
DOI：10.1038/s41598-018-19676-5
语种：English
出版社：Springer Nature
摘要：(BFO) nanoparticles that possess natural core-shell structure. Nonmonotonic variation of exchange bias field, interesting surface spin-glass state and improved exchange bias training effect are only obtained in 18 nm BFO particles. Based on comparative experiments on particles with different sizes, we found that the surface spins and the interaction among them show great effect on the interfacial exchange coupling of the core-shell structure, and thus are responsible for the peculiar exchange bias behavior in small BFO nanoparticles. Our work provides the effect of surface spin state on the magnetic characteristics of nanomaterials and will favor their applications on spintronic devices.