Structure and magnetic properties of compounds
Structure and magnetic properties of compounds
复制标题
化合物的结构和磁性能
DOI：
10.1088/0953-8984/9/35/019
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Yongquan Guo
中科院分区：
文献类型：
--
作者：
Yanming Zhao;Jingkui Liang;G. Rao;Weihua Tang;Yongquan Guo
通过X射线粉末衍射和磁测量研究了La1-xCexFe13-ySiy的稳定性、晶体结构和磁性能。随着Ce含量x的增加，Si的溶解度y和NaZn13型结构的稳定性降低。采用Rietveld法精修了La0.4Ce0.6Fe10.4Si2.6的晶体结构。精修结果表明，Si 原子优先占据 NaZn13 型结构中的 96(i) 位。 LaFe10.4Si2.6中Ce取代La导致晶胞体积压缩，居里温度和饱和磁化强度降低。取Ce3+矩的自由离子值(mu(Ce3+) = 2.1 mu(B))，根据反平行耦合模型推导出Fe原子的矩。计算结果表明，Fe原子的矩对x值的依赖性较弱。
The stability, crystal structure and magnetic properties of La1-xCexFe13-ySiy have been investigated by x-ray powder diffraction and magnetic measurements. With increasing Ce content x, the solubility y of the Si and the stability of the NaZn13-type structure decrease. The crystal structure of La0.4Ce0.6Fe10.4Si2.6 was refined by the Rietveld method. The refined result indicates that Si atoms preferentially occupy the 96(i) positions in the NaZn13-type structure. The substitution of Ce for La in LaFe10.4Si2.6 results in a compression of the lattice cell volume and a decrease of the Curie temperature and the saturation magnetization. Taking the free ion value for the moment of the Ce3+ (mu(Ce3+) = 2.1 mu(B)), the moment of the Fe atom was derived according to the antiparallel coupling model. The calculated results indicate that the moment of the Fe atom is weakly dependent on the value of x.
影响因子：
3.2
作者：
SAGAWA, M;FUJIMURA, S;MATSUURA, Y
通讯作者：
MATSUURA, Y