Magnetic Properties of (Pr1−xSmx)2Fe14B Melt-Spun Ribbons

被引:0
作者
Chengfu Xu
Kanghua Chen
Zhengfei Gu
Guanghui Rao
Gang Cheng
QingRong Yao
WenFeng Zhang
机构
[1] Central South University,State Key Laboratory of Powder Metallurgy
[2] Guilin University of Aerospace Technology,School of Mechanical Engineering
[3] Guilin University of Electronic Technology,School of Material Science and Engineering
来源
Journal of Superconductivity and Novel Magnetism | 2018年 / 31卷
关键词
Rare earth permanent magnet; Melt-spun ribbons; Magnetic properties;
D O I
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中图分类号
学科分类号
摘要
The magnetic properties of (Pr1−xSmx)2Fe14B melt-spun ribbons with varying x from 0 to 1.0 have been studied. The optimum magnetic property of Pr2Fe14B ribbon could be obtained with the surface velocity of copper wheel of 30 m/s. By melt spinning method, the formation of α-Fe impurity phase in the (Pr1−xSmx)2Fe14B samples could be inhibited, and the grain could be aligned. Sm element could be incorporated into Pr2Fe14B main crystalline phase and formed (Pr,Sm)2Fe14B phase with space group P42/mnm. The Curie temperature (Tc) of the (Pr1−xSmx)2Fe14B ribbons increases gradually from 555 to 617 K with the increase of Sm content x. Both the coercivity (Hc) and remanence ratio (Mr/Ms) decrease firstly and then increase with the Sm content increasing. As long as the Sm content x does not exceed 0.1, the squareness of demagnetization curve remains good. The critical value of transition from easy c-axis to easy plane for (Pr1−xSmx)2Fe14B ribbons is x= 0.6. When the Sm content x is up to 0.6, all the Hc and Mr/Ms achieved the minimum value, i.e., 243 Oe and 0.346, respectively.
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页码:3705 / 3710
页数:5
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