Nd_2(Fe_(0.9)Si_(0.1))_(14)B的中子衍射研究  

NEUTRON DIFFRACTION STUDY OF Nd_2(Fe_(0.9)Si_(0.1))_(14)B

作　　者：杨继廉[1] 张百生[1] 金兰[1] 丁永凡[1] 叶春堂[1] 杨应昌[2] 孔麟书 

机构地区：[1]中国原子能科学研究院 [2]北京大学

出　　处：《金属学报》1990年第1期A069-A071,共3页Acta Metallurgica Sinica

基　　金：国家自然科学基金

摘　　要：本文用中子衍射对Nd_2(Fe_(0.9)Si_(0.1))_(14)B在室温及77K进行了测量,用衍射峰的形状分析法进行了数据拟合。结果表明,在室温,Si择优占据4c,8j_1及16k_2晶位;Nd与Fe的磁矩平行于C轴排列。在77K,Si仍择优占据上述三个晶位。算得的Nd磁矩的方向偏离C轴37.8°。The neutron diffraction of Nd_2(Fe_(0.9)Si_(0.1))_(14)B has been measured at room temper-ature and 77 K. Their data were fitted by profile analysis method. From the data at room tem-perature it can be got that Si occupied preferentially the sites 4c, 8j_1 and 16k_2; the magneticmoments, both Nd and Fe, are parallel to C axis. From the neutron data at 77 K it can beshown that Si still occupied the same sites as the sample at room temperature, but the data fitwith Nd moments deviating C axis and Fe moments parallel to c axis is better than all mo-ments parallel to C axis. It seems to prove that the Nd spin reorientation takes place at 77 K.

关 键 词：ND2FE14B 永磁材料 中子 衍射 

分 类 号：TM273.06[一般工业技术—材料科学与工程]