NIMTE OpenIR  > 2018专题
Magnetic hardening of Nd-Ce-Fe-B films with high Ce concentration
Ren, Hanyang; Abbas, Nadeem; Liu, Yang; Tang, Hong; Gui, Wanglin; Ding, Jianzhong; Liu, J. Ping; Xia, Weixing; Du, Juan; Zhang, Jian
AbstractPartial substitution of Ce in Nd-Fe-B magnets is a feasible way to cope with the crisis of Nd and Dy in Nd-Fe-B production and reduce the cost of Nd-Fe-B magnets. In the present paper, the Nd-Ce-Fe-B films with high performance have been successfully fabricated by using an ultra-high vacuum (UHV) magnetron sputtering system. High magnetic performance with a ceorcivity of 13.3 kOe, a remanence of 11.4 kGs and a maximum energy product of 29.4 GMOe is obtained with the Ce substitution for more than 50 wt.% Nd without Dy addition. The high coercivity and (BH) max achieved in this work are much larger than those of previously reported Nd-Ce-Fe-B magnets with the same Ce concentration. The phase structure, microstructure and coercivity mechanism are analyzed. The coercivity mechanism is determined to be mainly dominated by nucleation. Based on the microstructure observation and coercivity mechanism analysis, the fine and well separated grains, smooth grain surface, small and less inhomogeneities should be responsible for the high coercivity. Our results encourage the further improvement of magnetic properties in Ce magnets including the bulk material with high Ce concentration.
KeywordPermanent-magnets Sintered Magnets High-coercivity Nucleation Fields Force Microscopy Microstructure Mechanism Substitution Reversal Ribbons
Subject AreaElectrochemistry
Document Type期刊论文
Recommended Citation
GB/T 7714
Ren, Hanyang,Abbas, Nadeem,Liu, Yang,et al. Magnetic hardening of Nd-Ce-Fe-B films with high Ce concentration[J]. SCIENTIFIC REPORTS,2018,8.
APA Ren, Hanyang.,Abbas, Nadeem.,Liu, Yang.,Tang, Hong.,Gui, Wanglin.,...&Zhang, Jian.(2018).Magnetic hardening of Nd-Ce-Fe-B films with high Ce concentration.SCIENTIFIC REPORTS,8.
MLA Ren, Hanyang,et al."Magnetic hardening of Nd-Ce-Fe-B films with high Ce concentration".SCIENTIFIC REPORTS 8(2018).
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