Tb_(3-x)Y_xFe_(26.5)Cr_(2.5)(0.3≤x≤2.5)化合物的结构和低温磁性  

Structure and Magnetic Properties of Tb_(3-x)Y_xFe_(26.5)Cr_(2.5)(0.3≤x≤2.5) Compounds at Low Temperature

作　　者：呼力雅格其[1] 格日勒满达呼 富泉[1] 宁君[1] 凯丽[1] 赵凤歧[1] 

机构地区：[1]内蒙古师范大学物理与电子信息学院内蒙古功能材料物理与化学重点实验室,内蒙古呼和浩特010022 [2]内蒙古疾病预防控制中心,内蒙古呼和浩特010031

出　　处：《内蒙古师范大学学报（自然科学汉文版）》2009年第6期658-662,共5页Journal of Inner Mongolia Normal University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50561004)

摘　　要：采用X射线衍射和磁性测量等方法,研究了Tb3-xYxFe26.5Cr2.5化合物的结构和低温磁性.当0.3≤x≤2.5时,化合物呈现Nd3(Fe,Ti)29型单斜结构,属于A2/m空间群.化合物晶胞体积V和居里温度TC随Y含量增加而减少.随着Y含量的增加,低温自发磁化强度M0、饱和磁化强度Ms和各向异性场Ba均降低,出现一级磁化过程.The Tb3-xYxFe26.5Cr2.5（0.3≤x≤ 2.5） compounds were prepared by arc-melting method.The structure and magnetic properties of Tb3-xYxFe26.5Cr2.5 compounds at low temperature have been studied by means of X-ray diffraction and magnetization measurement.It is found that the compounds with single phase crystallize in Nd3（Fe,Ti）29-type structurebelong to the monoclinic symmetry and A2/m space group.The unit cell volume V and the Curie temperature TC of the compounds decrease with increasing Y content.The spontaneous magnetization M0, the saturation magnetization Ms and the anisotropy field B. of the compounds decrease with decreasing the concentration of Y element. A first order magnetization process appeared on the compounds.

关 键 词：稀土金属间化合物 低温磁性 居里温度 一级磁化过程 

分 类 号：O482.52[理学—固体物理]