Structure and magnetic properties of SmCo7−xTix with TbCu7-type structure
Structure and magnetic properties of SmCo7−xTix with TbCu7-type structure
复制标题
DOI：
10.1063/1.373327
复制
发表时间：
2000-04
影响因子：
3.2
通讯作者：
Jian Zhou;I. Al-Omari;J. Liu;D. Sellmyer
中科院分区：
文献类型：
--
作者：
Jian Zhou;I. Al-Omari;J. Liu;D. Sellmyer
SmCo7−xTix，x=0–0.56 块状样品通过电弧熔炼制备。 X射线衍射表明，0.2<x<0.4的样品形成单一无序的TbCu7型结构相，并且对于其他x值出现其他少量相，这表明Ti有助于稳定1-7相。晶格参数比（c/a）随着Ti浓度的增加而增加。室温饱和磁化强度和居里温度随着x的增加而降低。对对准样品的 X 射线衍射和磁化测量表明，所有研究的样品都具有单轴各向异性。发现各向异性场随着 x 的增加而增加，在 x=0.28 时达到最大值 175 kOe，然后随着 x 值的增加而减小。该各向异性场比Th2Zn17型结构的相同化合物高20%。
The SmCo7−xTix, x=0–0.56 bulk samples are prepared by arc melting. X-ray diffraction indicates that samples with 0.2<x<0.4 form a single disordered TbCu7-type structure phase and other minor phases appear for other values of x, which indicates that Ti helps stabilize the 1-7 phase. The lattice parameters ratio (c/a) increases with increasing Ti concentration. Room temperature saturation magnetization and Curie temperature decrease with increasing x. X-ray diffraction and magnetization measurements on aligned samples show that all samples studied have uniaxial anisotropy. The anisotropy field is found to increase with increasing x reaching a maximum of 175 kOe at x=0.28 and then decreases for higher values of x. This anisotropy field is 20% higher than that of the same compound with Th2Zn17-type structure.