CRYSTALLOGRAPHICSTRUCTUREANDMAGNETICPROPERTIESOFR2Fe17N2.4

被引：0

作者：

杨应昌

葛森林

张晓东

孔麟书

潘琪

杨继廉

张百生

丁永凡

叶春堂

机构：

[1] DepartmentofPhysics,PekingUniversity,Beijing,PRC,DepartmentofPhysics,PekingUniversity,Beijing,PRC,DepartmentofPhysics,PekingUniversity,Beijing,PRC,DepartmentofPhysics,PekingUniversity,Beijing,PRC,DepartmentofPhysics,PekingUniversity,Beijing,PRC,Instituteof

来源：

Science in China,SerB. | 1991年 / Ser.B.1991卷 / 11期

关键词：

nitrogen; Curie temperature; magnetocrystalline anisotropy; permanent magnet;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

<正> By a proper thermal treatment, the nitrogen atoms can enter the R2Fe17 structure. The crystallographic and intrinsic magnetic properties as well as their relationship have been studied by magnetic measurements, X-ray and neutron diffraction techniques. The neutron data indicate that the nitrogen atoms occupy the interstitial sites in the Th2Zn17-type rhom-bohedral structure. The inserting nitrogen atoms are found to dilate the cell volume, increase the Curie temperature and enhance the saturation moment by raising the difference in the electron number between the spin-up and spin-down 3d subbands of the Fe atoms. Furthermore, the nitrogen atoms have an important effect on the magnetocrystallic anisotropy, which results in an easy axis with Sm2Fe17N2.4. All these make Sm2Fe17N2.4 favorable for permanent magnet applications.

引用

页码：1290 / 1295

页数：6