STRUCTURE AND MAGNETIC PROPERTIES OF TB0.27 DY0.73FE1.9+xTI0.05 COMPOUNDS

Structure, Curie temperature, and magnetostriction have been systemically investigated for Tb0.27Dy0.73 Fe1.9+xTi0.05 compounds using X-ray diffraction, vibrating sample magnetometer, and standard strain gauge technique. The samples show pure MgCu2-type Laves phase when x≥0.2, and a small amount of second phases appear when x>0.2. The lattice parameters and the Curie temperatures change modestly with increasing Fe content. The magnetostriction of Tb0.27Dy0.73Fe1.9+xTi0.05 compounds shows strong dependence on Fe content.