Structural And Magnetic Properties Of Hoi.xTbxFe195 x = 0.0, 0.25, 0.5, 0.75 And 1.0

摘要

Alloys of Hoi.xTbxFe195 [x = 0, 0,25, 0,5, 0,75 and 1] were prepared and investigated for the structural and magnetic properties, A three phase microstructure consisting of Laves phase (Ho,Tb)Fe2 as matrix, and (Ho,Tb)Fe3 and (Hojb)-rich as minor phases has been observed for alloys x > 0,5,, For alloys x < 0,5, the (Ho,Tb)Fe3 phase is non-existent. The lattice parameter and Curie temperature of the alloys are found to increase with Tb addition. At ambient condition, the easy magnetization direction lies along <100> for HoFei 95 (x = 0) and changes to <111> for Tb substituted alloys [x = 0,25 - 1].