Simultaneous enhancement of coercivity and saturation magnetization in high-performance anisotropic NdFeB thick films with a Dy diffusion layer

doi:10.1039/d3nr03677d

IMR OpenIR

	Simultaneous enhancement of coercivity and saturation magnetization in high-performance anisotropic NdFeB thick films with a Dy diffusion layer
	Ye, Zhixing 1,2; Zhao, Xiaotian 1; Liu, Long 1; Liu, Wei 1; Wang, Jinghui 1,2; Wu, Jinxiang 1,2; Li, Yang 1,2; Ma, Jun 1,2; Ju, Hongzhan 1,2; Zhang, Zhidong 1
通讯作者	Zhao, Xiaotian(xtzhao@imr.ac.cn) ; Liu, Wei()
	2023-10-31
发表期刊	NANOSCALE
ISSN	2040-3364
页码	10
摘要	Generally, the addition of the Dy element leads to a decrease of the saturation magnetization and the remanent magnetization in NdFeB films due to its antiferromagnetic coupling with Fe. However, in this study, upon increasing the ratio of Dy in the Nd-Dy diffusion layers of NdFeB thick films, the saturation magnetization has an anomalously slight enhancement, while the coercivity and remanent magnetization have a large enhancement. The increase of coercivity is attributed to the decoupling between Nd2Fe14B grains and the enhanced pinning effect. Microstructural analysis revealed a layered structure composed of spherical Nd2Fe14B grains at the location of the Dy diffusion layer, which is attributed to the Dy diffusion layer reacting with the region of Nd element aggregation during the annealing process, facilitating transformation into Nd2Fe14B grains. The increase of the proportion of Nd2Fe14B grains results in a slight enhancement of saturation magnetization. By this method, we obtained a high-performance anisotropic NdFeB thick film of 28.7 mu m with a coercivity of 2.46 T and a surface field of 163 Oe. This work establishes a microscale growth model for NdFeB thick films and helps to prepare high-performance NdFeB thick films applicable directly to microelectromechanical systems. With increasing the ratio of Dy in the Nd-Dy diffusion layers of NdFeB thick films, the saturation magnetization has an anomalously slight enhancement, while the coercivity and remanent magnetization have a large enhancement.
资助者	This work has been supported by the National Key Ramp;D Program of China (2021YFB3500303) and the National Natural Science Foundation of China under projects 52031014 and 51971219. ; National Key Ramp;D Program of China ; National Natural Science Foundation of China
DOI	10.1039/d3nr03677d
收录类别	SCI
语种	英语
资助项目	This work has been supported by the National Key Ramp;D Program of China (2021YFB3500303) and the National Natural Science Foundation of China under projects 52031014 and 51971219.[2021YFB3500303] ; National Key Ramp;D Program of China[52031014] ; National Key Ramp;D Program of China[51971219] ; National Natural Science Foundation of China
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:001100685800001
出版者	ROYAL SOC CHEMISTRY
引用统计	被引频次：3[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/321006/177457
专题	中国科学院金属研究所
通讯作者	Zhao, Xiaotian; Liu, Wei
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	Ye, Zhixing,Zhao, Xiaotian,Liu, Long,et al. Simultaneous enhancement of coercivity and saturation magnetization in high-performance anisotropic NdFeB thick films with a Dy diffusion layer[J]. NANOSCALE,2023:10.
APA	Ye, Zhixing.,Zhao, Xiaotian.,Liu, Long.,Liu, Wei.,Wang, Jinghui.,...&Zhang, Zhidong.(2023).Simultaneous enhancement of coercivity and saturation magnetization in high-performance anisotropic NdFeB thick films with a Dy diffusion layer.NANOSCALE,10.
MLA	Ye, Zhixing,et al."Simultaneous enhancement of coercivity and saturation magnetization in high-performance anisotropic NdFeB thick films with a Dy diffusion layer".NANOSCALE (2023):10.