(Nd1－xGdx)3Fe27.31Ti1.69化合物的结构和磁性

通过X射线衍射和磁性测量等手段研究了(Nd_1-xGd_x)₃Fe_27.31Ti_1.69(0≤x≤0.6)化合物的结构和磁性.X射线衍射测量结果表明Gd替代后并未改变Nd₃(Fe,Ti)₂₉化合物的晶体结构，但引起了晶胞体积收缩.随着Gd含量的增加，化合物的居里温度T_C和室温磁晶各向异性场B_a单调增加，而自旋重取向 关键词： 1-xGd_x)₃Fe_27.31Ti_1.69化合物')" href="#">(Nd_1-xGd_x)₃Fe_27.31Ti_1.69化合物 磁晶各向异性 自旋重取向 磁相图

Structure and magnetic properties of ( Nd1-xGdx )3 Fe27.31 Ti1.69 compounds

The structure and magnetic properties of (Nd_1-xGd_x)₃Fe_27.31Ti_1.69 compounds have been investigated by means of X-ray diffraction and magnetic measurements. All compounds with x in the range of x≤0.6 crystallize in Nd₃(Fe, Ti)₂₉-type structure. Substitution of Gd for Nd leads to a contraction of unit-cell volume. The Curie temperature T_C and anisotropy field B_a of the (Nd_1-xGd_x)₃Fe_27.31Ti_1.69 compounds increases monotonically with increasing Gd content. Saturation magnetization M_s of the (Nd_1-xGd_x)₃Fe_27.31Ti_1.69 compounds decreases with increasing x. As temperature lowers from room temperature to 5K, a spin reorientation from the easy plane to the easy cone occurs for (Nd_1-xGd_x)₃Fe_27.31Ti_1.69 compounds. Spin phase diagrams have been constructed for (Nd_1-xGd_x)₃Fe_27.31Ti_1.69 compounds.