Atomic origin of magnetic coupling of antiphase boundaries in magnetite thin films

doi:10.1016/j.jmst.2021.08.017

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	Atomic origin of magnetic coupling of antiphase boundaries in magnetite thin films
	Gao, Chunyang 1,2; Jiang, Yixiao 1,2; Yao, Tingting 1,2; Tao, Ang 2; Yan, Xuexi 2; Li, Xiang 2; Chen, Chunlin 1,2; Ma, Xiu-Liang 2; Ye, Hengqiang 1
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2022-04-30
卷号	107 页码:92-99
关键词	Fe3O4 Transmission electron microscopy Antiphase boundary Magnetic coupling First-principles calculations
ISSN号	1005-0302
DOI	10.1016/j.jmst.2021.08.017
通讯作者	Chen, Chunlin(clchen@imr.ac.cn)
英文摘要	Revealing the magnetic coupling nature of boundary defects is crucial for in-depth understanding of the behavior and properties of magnetic materials and devices. Here, magnetite ( i.e. , Fe 3 O 4 ) thin films were grown epitaxially on (100) SrTiO 3 single-crystal substrates by pulsed laser deposition. Atomic-scale scanning transmission electron microscopy characterizations reveal that three types of antiphase boundaries (APBs) are formed in the Fe 3 O 4 thin film. They are the (100) APB that is formed on the (100) plane with a crystal translation of (1/4) a [01 1 over bar ], the type I and type II (110) APBs that are both formed on the (110) plane with the same crystal translation of (1/4) a [101] but different terminated atomic planes. The type I (110) APB is terminated at the atomic plane with mixed tetrahedral- and octahedral-sites Fe atoms, the type II (110) APB is terminated at the octahedral-site Fe plane. First-principles calculations reveal that the (100) APB and the type I (110) APB tend to form the ferromagnetic coupling that will not decrease the spin polarization of Fe 3 O 4 films, while the type II (110) APB prefers to form the antiferromagnetic coupling that will degrade the magnetic properties. The magnetic coupling modes of the APBs are closely related to the Fe-O-Fe bond angles across the boundaries. (c) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	National Natural Science Foun-dation of China[51771200] ; National Natural Science Foun-dation of China[51971224] ; National Natural Science Foun-dation of China[51801215] ; LiaoNing Re-vitalization Talents Program[XLYC1802088] ; Key Re-search Program of Frontier Sciences, CAS[QYZDY-SSW-JSC027] ; Key Re-search Program of Frontier Sciences, CAS[X210141TL210]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000773329000002
资助机构	National Natural Science Foun-dation of China ; LiaoNing Re-vitalization Talents Program ; Key Re-search Program of Frontier Sciences, CAS
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/173065]
专题	金属研究所_中国科学院金属研究所
通讯作者	Chen, Chunlin
作者单位	1.Ji Hua Lab, Foshan 528200, Peoples R China 2.Chinese Acad Sci, Univ Sci & Technol China, Sch Mat Sci & Engn, Inst Met Res,Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Gao, Chunyang,Jiang, Yixiao,Yao, Tingting,et al. Atomic origin of magnetic coupling of antiphase boundaries in magnetite thin films[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2022,107:92-99.
APA	Gao, Chunyang.,Jiang, Yixiao.,Yao, Tingting.,Tao, Ang.,Yan, Xuexi.,...&Ye, Hengqiang.(2022).Atomic origin of magnetic coupling of antiphase boundaries in magnetite thin films.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,107,92-99.
MLA	Gao, Chunyang,et al."Atomic origin of magnetic coupling of antiphase boundaries in magnetite thin films".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 107(2022):92-99.