Formation of Disordered Th2Zn17-Type With Ti and B Additions and Hard Magnetic Properties of Their Nitrides

被引：2

作者：

Wu, R. ^{[1
]}

Liu, S. Q. ^{[1
]}

Wei, J. Z. ^{[1
]}

Xia, Y. H. ^{[1
]}

Han, J. Z. ^{[1
]}

Wang, C. S. ^{[1
]}

Du, H. L. ^{[1
]}

Yang, Y. C. ^{[1
]}

Yang, J. B. ^{[1
]}

机构：

[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2013年 / 49卷 / 07期

基金：

国家高技术研究发展计划(863计划); 中国国家自然科学基金;

关键词：

Crystal structure; disordered structure; hard magnetic properties; intermetallics compounds; SM-FE-N; ALLOYS;

D O I：

10.1109/TMAG.2013.2249578

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Compounds with nominal compositions Sm10Fe90 and Sm10Fe90Ti2B were prepared by strip casting method. Disordered Th2Zn17-type phase of Sm10Fe90Ti2B was achieved. This disordered Th2Zn17 (space group R-3m) phase was formed by randomly replacing Sm(3a) with Fe(6c)-dumbbell ((3a) and (6c) are Wyckoff symbols)). Scanning electron microscopy image revealed that the disordered Sm10Fe90Ti2B crystallized in micron-scaled grains, which is useful for the improvement of its hard magnetic properties. By annealing this disordered phase, it transformed into ordered rhombohedral Th2Zn17 structure. This derivative 2:17 type compound was further nitrided and then finely pulverized using surfactant-assisted grinding method. The final anisotropy powders showed excellent hard magnetic properties with coercivity of 12.4 kOe and (BH)(max) similar to 37 MGOe.

引用

页码：3338 / 3340

页数：3

共 19 条

[1] High coercivity in nanocrystalline carbides Sm(Fe,Ga)9C -: art. no. 192503 [J].