YTi（Fe_（1－x）Co_x）_（11）的化学法合成及其结构、磁性能

Chemical Synthesis of YTi(Fe_(1-x)Co_x)_(11) and its Structure and Magnetic Properties

摘要:

应用共沉淀－还原扩散法成功地合成了ＹＴｉ（Ｆｅ（１－ｘ）ＣＯｘ）（１１）系列稀土永磁合金（ｘ＝０．０，０．１５，０．２５，０．５），确定了其最佳合成条件，采用ＸＲＤ研究了其晶体结构及在Ｍ１５５型振动样品磁强计上测了其居里温度和磁化强度。得出：ＹＴｉ（Ｆｅ（１－ｘ）ＣＯｘ）（１１）系列合金均具有ＴｈＭｎ（１２）型结构，其晶胞参数随Ｃｏ掺入量增大而减小；居里温度点随Ｃｏ掺入量增大而升高；比饱和磁化强度在ｘ＝０．１５处达到最大。

Abstract:

he rare-earth magnetic alloys of YTi(Fe(1-x)Cox)(11) system (x=0.0, 0. 15, 0.25, and 0.5) have been prepared and the optimal reaction condition has been worked out by using the method of coprecipitation-reduction diffusion.By studing the crystal structure with XRD and testing the Curie temperature and magnetization on the VSM of model M 155, it is shown that all the YTi(Fe(1-x)Cox)(11) system alloys has the crystal structure of ThMn12 type,the lattice parameters decrease and the Curie temperature increases with the Co addition amount increasing, the reduced saturated magnetization has a maximum at x=0. 15.