【摘要】 本文用X射线衍射和磁测量及⁵⁷Fe穆斯堡尔谱研究了Y₂Fe₁₇C_x合金的晶体结构和磁性。碳原子在Y₂Fe₁₇C_x合金中占据六方结构的6h晶位或菱形结构的9e晶位;C原子的加入使得Y₂Fe₁₇C_x合金的居里温度和饱和磁化强度都有较为明显的变化,特别是近邻于C原子的Fe原子外层电子结构受到较大的影响。更多还原

【Abstract】 The magnetic properties of Y₂Fe₁₇C_x alloys were studied with ⁵⁷Fe MossbauerSpectroscopy and magnetic measurement,and the crystal structure with X-ray diffraction.The carbon at-oms occupy the 6h sites in hexagonal-structure（9e sites in rhombic-structure）.The Curie temperature andsaturated magnetization are changed obviously by the changing of the content of carbon in the alloys.Es-pecially,the electron structure of external shell of iron atoms,near to the carbon atoms,is affected a lot bycarbon atoms.更多还原