Y_2(Fe_(0.95)Al_(0.05))_(14)B的中子衍射研究

NEUTRON DIFFRACTION STUDY OF Y_2 (Fe_(0.95) Al_(0.05))_(14)B

用中子衍射对永磁合金Y_2(Fe_(0.95)Al_(005))_(14)B进行了测量。结果表明:其仍为Nd_2Fe_(14)B型四角结构,空间群为P42/mnm;Al进入晶体结构之中并择优占据4c及8j_2晶位。对Al的择优占位与磁性的关系进行了初步的讨论。

The structure of Y_2 (Fe_(0.95)Al_(0.05))_(14) B is tetragonal Nd_2Fe_(14)B type, its space groupis P42/mnm; Al atoms enter into the Crystal structure and occupy the sites 4c and 8j_2 prefer-entially. The relationship between magnetic properties and the occupancies is discussed prima-rily.