物理学报2001，Vol.50Issue(1)：132-138,7.
Ce1-xYxFe2的电子结构和磁性质
ELECTRONIC STRUCTURE AND MAGNETIC PROPERTIES OF Ce1-xYxFe2 COMPOUNDS
摘要
Abstract
Electronic structure and spin moment of Ce1-xYxFe2 are calculated using a fully self-consistent discrete variational method within the local density framework. These results are used to explain the effect of magnetic properties and magnetostriction on Ce-site substituted by Y in CeFe2. Stoner action obtained indicates that the local Fe magnetic moment provides mainly the weak ferromagnetism from CeFe2, and Ce-site local moment is unstable. The local magnetic moment of Fe-site depends strongly on the volume change of the investigated system, which does not noticeably affect the density of state and magnetic properties. The Ce-site substituted by Y results in two effects on electronic structure, that is, the descent of Fermi surface and the descent of the main peak of Ce 4f energy level. The competition of the two descents results in the fluctuation of Ce valence.关键词
Ce1-xYxFe2,电子结构,自旋磁矩,磁致伸缩分类
数理科学引用本文复制引用
唐成春,吴光恒,李养贤,詹文山..Ce1-xYxFe2的电子结构和磁性质[J].物理学报,2001,50(1):132-138,7.基金项目
国家自然科学基金(批准号：59871062)资助的课题. Project supported by the National Natural Science Foundation of China (Grant No.59871062). （批准号：59871062）
