The structure and uniaxial magnetocrystalline anisotropy of novel intermetallic compounds La2Co17-xVx

被引：9

作者：

Liu, QL

Liang, JK

Xu, J

Chen, XL

Shi, Y

Shen, BG

机构：

[1] CHINESE ACAD SCI,CTR CONDENSED MATTER PHYS,BEIJING 100080,PEOPLES R CHINA

[2] ACAD SINICA,INT CTR MAT PHYS,SHENYANG 110015,PEOPLES R CHINA

[3] CHINESE ACAD SCI,INST PHYS,STATE KEY LAB MAGNETISM,BEIJING 100080,PEOPLES R CHINA

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1997年 / 9卷 / 45期

关键词：

D O I：

10.1088/0953-8984/9/45/022

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The crystal structure and magnetic properties of new intermetallic compounds La2Co17-xVx (0.8 less than or equal to x less than or equal to 1.2) have been investigated by x-ray powder diffraction and magnetic measurement. The lattice parameters of La2Co17-xVx with the rhombohedral Th2Zn17-type structure are a = 8.4971-8.5006 Angstrom, c = 12.3370-12.3424 Angstrom. V atoms show a strong preference for occupying 6c crystallographic positions. The La2Co17-xVx compounds are ferromagnetic. The Curie temperature decreases from 926 to 827 K and the saturation magnetic moment decreases from 22.5 to 19.6 mu(B) fu(-1) with x = 0.8-1.2. The La2Co16V compound exhibits favourable uniaxial anisotropy and the easy magnetization direction is parallel to the c axis. The anisotropy field is 19 kOe at 1.5 K for the La2Co16V compound. The reasons that La2Co17 does not exist and La2Co16V has uniaxial anisotropy are discussed.

引用

页码：9947 / 9952

页数：6