Coercivity enhancement by adjusting the ratio of La to Ce in REFeB films

doi:10.1016/j.jmmm.2021.168435

IMR OpenIR

	Coercivity enhancement by adjusting the ratio of La to Ce in REFeB films
	Li, Y.1,2; Zhao, X. T.1; Liu, W.1; Ma, J.1,2; Liu, L.1,2; Song, Y. H.1,2; Zhao, X. G.1; Zhang, Z. D.1
通讯作者	Liu, W.(wliu@imr.ac.cn)
	2021-12-15
发表期刊	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN	0304-8853
卷号	540 页码:8
摘要	High abundant La and Ce elements have been supposed be a potential developing direction as the partial alternative to crucially relied Nd/Pr in the 2:14:1-type permanent magnets. In this work, we reported that adjusting the substitution ratio of La to Ce for inducing Ce valence is an effective strategy to prepare perpendicular magnetic anisotropic (LaxCe1-x)(9)Nd9Fe72B10 films (0 < x < 1) with good magnetic properties. Both X-ray diffraction and transmission electron microscopy results illustrate the lattice expansion of RE2Fe14B tetragonal phase after lanthanum partially replaces cerium element. The increase of La content in the composition range of x <= 0.7 benefits Ce valence shifting towards the favorable Ce3+ state as verified by X-ray photoelectron spectroscopy results, leading to the enhancement of coercivity. Combining with characterization of domain morphology and micromagnetic theory analysis, the coercivity mechanism of domain reversal has been confirmed that with the increasing La content, it gradually tends to a dominant domain-wall-pinning mechanism from a mixed mechanism of domain-wall-pinning and nucleation behaving together. Our results provide a feasible method to enhance magnetic properties of high abundant rare-earth permanent magnetic films by manipulating doping element contents and are helpful to understand magnetization reversal behaviors in the films.
资助者	State Key Project of Research and Development of China ; National Nature Science Foundation of China
DOI	10.1016/j.jmmm.2021.168435
收录类别	SCI
语种	英语
资助项目	State Key Project of Research and Development of China[2017YFA0206302] ; National Nature Science Foundation of China[51590883] ; National Nature Science Foundation of China[52031014] ; National Nature Science Foundation of China[51971219]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Condensed Matter
WOS记录号	WOS:000705010500010
出版者	ELSEVIER
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/166523
专题	中国科学院金属研究所
通讯作者	Liu, W.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, Y.,Zhao, X. T.,Liu, W.,et al. Coercivity enhancement by adjusting the ratio of La to Ce in REFeB films[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2021,540:8.
APA	Li, Y..,Zhao, X. T..,Liu, W..,Ma, J..,Liu, L..,...&Zhang, Z. D..(2021).Coercivity enhancement by adjusting the ratio of La to Ce in REFeB films.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,540,8.
MLA	Li, Y.,et al."Coercivity enhancement by adjusting the ratio of La to Ce in REFeB films".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 540(2021):8.