摘要
通过ｘ射线衍射和磁性测量，研究了１∶１２型稀土过渡族金属间化合物Ｔｂ（Ｆｅ１－ｘＣｏｘ）１１．３Ｎｂ０．７的结构和磁性，其中ｘ＝０．００、０．０５、０．１０、０．１５、０．２０和０．３０．实验结果表明所有化合物均是四方ＴｈＭｎ１２型结构．晶格常数ａ、ｃ以及晶胞体积Ｖ随Ｃｏ含量增加而减小；Ｃｏ替代部分Ｆｅ后导致Ｔｂ（Ｆｅ１－ｘＣｏｘ）１１．３Ｎｂ０．７化合物的居里温度ＴＣ显著增加，而自旋重取向温度ＴＳＲ单调降低。
The
structural and magnetic properties of 1∶12 type rare earth transition metal compounds Tb(Fe
1-x Co x) 11 3 Nb 0 7 have been studied by means of x ray diffraction and
magnetization measurements,when x= 0 00,0 05,0 10,0 15,0 20,0 30 respectively.The
result of x-ray diffraction analysis shows that all of the compounds are in single phase with the
ThMn 12 type structures.The partial substitution of Co for Fe in Tb(Fe 1-x Co x) 11 3 Nb
0 7 compounds does not only lead to a reduction of the lattice constants a and c,the volume of
unit cell V and the spin reoriantation temperature T SR ,but also results in a increase of
curice temperature and saturation magnetization.
出处
《中央民族大学学报（自然科学版）》
1999年第1期46-50,共5页
Journal of Minzu University of China(Natural Sciences Edition)
