【摘要】 利用真空熔炼法制备了 Ba Cd11结构的 Nd(Fe1-x Cox) 9Si2 Cy 化合物 ,X射线衍射的结果表明 C原子加入后 ,单胞体积膨胀 .室温下测量了样品的穆斯堡尔谱 ,发现随着 Co含量的增加 ,化合物中 Fe的平均超精细场先增大后减小 .而 C原子的加入 ,则使 Fe的平均超精细增加 ,同质异能移减小更多还原

【Abstract】 The Nd(Fe 1-x Co x) 9 Si 2 C y(0<x≤0.5,0.5≤y≤1.5) compounds were synthesized by using the arc-melting technique.Studies on X-ray diffraction indicate that the positions of the metal atoms correspond to the BaCd 11 type of structure and that the unit-cell volume increases with the addition of C atoms.Mssbauer spectroscopy experiments provide evidence that the hyperfine field increases with the contents of C,but it changes non-monotonously with the comtents of Co.更多还原