Mediating exchange bias by Verwey transition in CoO/Fe3O4 thin film

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	Mediating exchange bias by Verwey transition in CoO/Fe3O4 thin film
	Liu, XH; Liu, W; Zhang, ZD; Chang, CF; Liu, XH (reprint author), Max Planck Inst Chem Phys Solids, Nothnitzerstr 40, D-01187 Dresden, Germany.; Liu, XH (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
刊名	JOURNAL OF APPLIED PHYSICS
	2018-02-28
卷号	123 期号:8 页码:-
关键词	Polarized Neutron Reflectometry Magnetic-properties Fe3o4/coo Superlattices Bilayers Anisotropy Multilayers Deposition Thickness Transport Growth
ISSN号	0021-8979
英文摘要	We report the tunability of the exchange bias effect by the first-order metal-insulator transition (known as the Verwey transition) of Fe3O4 in CoO (5 nm)/Fe3O4 (40 nm)/MgO (001) thin film. In the vicinity of the Verwey transition, the exchange bias field is substantially enhanced because of a sharp increase in magnetocrystalline anisotropy constant from high-temperature cubic to low-temperature monoclinic structure. Moreover, with respect to the Fe3O4 (40 nm)/MgO (001) thin film, the coercivity field of the CoO (5 nm)/Fe3O4 (40 nm)/MgO (001) bilayer is greatly increased for all the temperature range, which would be due to the coupling between Co spins and Fe spins across the interface. Published by AIP Publishing.; We report the tunability of the exchange bias effect by the first-order metal-insulator transition (known as the Verwey transition) of Fe3O4 in CoO (5 nm)/Fe3O4 (40 nm)/MgO (001) thin film. In the vicinity of the Verwey transition, the exchange bias field is substantially enhanced because of a sharp increase in magnetocrystalline anisotropy constant from high-temperature cubic to low-temperature monoclinic structure. Moreover, with respect to the Fe3O4 (40 nm)/MgO (001) thin film, the coercivity field of the CoO (5 nm)/Fe3O4 (40 nm)/MgO (001) bilayer is greatly increased for all the temperature range, which would be due to the coupling between Co spins and Fe spins across the interface. Published by AIP Publishing.
学科主题	Physics, Applied
语种	英语
资助机构	Max Planck-POSTECH Center for Complex Phase Materials; National Basic Research Program of China [2017YFA0206302]; National Natural Science Foundation of China [51590883, 51331006]; Chinese Academy of Sciences [KJZD-EW-M05-3]
公开日期	2018-06-05
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79485]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, XH (reprint author), Max Planck Inst Chem Phys Solids, Nothnitzerstr 40, D-01187 Dresden, Germany.; Liu, XH (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Liu, XH,Liu, W,Zhang, ZD,et al. Mediating exchange bias by Verwey transition in CoO/Fe3O4 thin film[J]. JOURNAL OF APPLIED PHYSICS,2018,123(8):-.
APA	Liu, XH,Liu, W,Zhang, ZD,Chang, CF,Liu, XH ,&Liu, XH .(2018).Mediating exchange bias by Verwey transition in CoO/Fe3O4 thin film.JOURNAL OF APPLIED PHYSICS,123(8),-.
MLA	Liu, XH,et al."Mediating exchange bias by Verwey transition in CoO/Fe3O4 thin film".JOURNAL OF APPLIED PHYSICS 123.8(2018):-.