Y_6(Fe_(1-X)Mn_X)_(23)和 Y_6(Fe_(1-X)Al_X)_(23)化合物中的3d-3d磁性互作用

Magnetic Interaction Between 3d Atoms In Y_6(Fe_(1-x)Mn_x)_(23) and Y_6(Fe_(1-x)Al_x)_(23) Compounds

为充分研究 Th_6Mn_(23)型稀土—过渡金属化合物中3d—3d磁性互作用,利用中子衍射方法分析了 Y_6(Fe_(1-x)Al_x)_(23)化合物的磁结构,结合 Yc(Fe_(1-x)Mn_x)_(23)化合物的中子衍射实验结果,证实化合物中原子的择优有序排列和原子的近邻环境是决定3d—3d 磁性互作用性质的主要因素.

In order to investigate the magnetic interaction between 3d atoms inthe Th_6Mn_(23)-type rare earth compound,the magnetic structural pro-perties of Y_6(Fe_(1-x)Al_x)_(23)were studied by neutron diffraction.Neutron diffraction studies of the compounds with the experimentalresults of neutron diffraction of Y_6(Fe_(1-x)Mn_x)_(23)compounds give evidencefor that the preferential atomic ordering and the nearest neighbor distancebetween the atoms in the compounds arc main factors of determining theproperties of 3d-3d magnetic interaction.