Magnetic properties and coercivity mechanism of high Ce-content CeNdFeB film with Tb diffusion

doi:10.1063/5.0088463

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	Magnetic properties and coercivity mechanism of high Ce-content CeNdFeB film with Tb diffusion
	Wu, J. X.1,2; Zhao, X. T.2; Liu, W.2; Li, Y.1,2; Ma, J.1,2; Song, Y. H.1,2; Liu, L.1,2; Ju, H. Z.1,2; Zhang, Z. D.2
刊名	JOURNAL OF APPLIED PHYSICS
	2022-04-28
卷号	131 期号:16 页码:8
ISSN号	0021-8979
DOI	10.1063/5.0088463
通讯作者	Liu, W.(wliu@imr.ac.cn)
英文摘要	Magnetic properties and coercivity mechanism of an anisotropic Ce-Nd-Fe-B film with a high Ce content (70 at. % Nd is replaced by Ce) have been investigated. After grain boundary diffusion with Tb layers, an enhancement of coercivity from 4150 to 9250 Oe is observed. Combining the initial magnetization curves, micromagnetic theory, and in-siut observation of magnetic domains in the demagnetization process, it is confirmed that the coercivity mechanism for the high-Ce-content magnets is the mixed type dominated by the pinning mechanism. Moreover, as the thickness of the Tb diffusion layer increases, the pinning center of domain walls changes from narrow planar inhomogeneities to wide planar inhomogeneities. A growing role of pinning plays in determining the coercivity of samples with increasing the thickness of Tb layer due to the increase in magnetocrystalline anisotropy after Tb substitution in the RE2Fe14B phase. In addition, the CeFe2 intergranular phase leads to the enhancement of coercivity due to decoupling the hard magnetic phase grains. Our results provide an insight into the coercivity mechanism of high-Ce-concentration Ce-Nd-Fe-B magnetic materials and promote the comprehension of the effect of Tb diffusion in the magnetization reversal process.& nbsp;Published under an exclusive license by AIP Publishing
资助项目	National Key R&D Program of China[2021YFB3500303] ; National Nature Science Foundation of China (NNSFC)[52031014] ; National Nature Science Foundation of China (NNSFC)[51971219]
WOS研究方向	Physics
语种	英语
出版者	AIP Publishing
WOS记录号	WOS:000793144600006
资助机构	National Key R&D Program of China ; National Nature Science Foundation of China (NNSFC)
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/174043]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, W.
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wu, J. X.,Zhao, X. T.,Liu, W.,et al. Magnetic properties and coercivity mechanism of high Ce-content CeNdFeB film with Tb diffusion[J]. JOURNAL OF APPLIED PHYSICS,2022,131(16):8.
APA	Wu, J. X..,Zhao, X. T..,Liu, W..,Li, Y..,Ma, J..,...&Zhang, Z. D..(2022).Magnetic properties and coercivity mechanism of high Ce-content CeNdFeB film with Tb diffusion.JOURNAL OF APPLIED PHYSICS,131(16),8.
MLA	Wu, J. X.,et al."Magnetic properties and coercivity mechanism of high Ce-content CeNdFeB film with Tb diffusion".JOURNAL OF APPLIED PHYSICS 131.16(2022):8.