Abstract
The crystal structure, Curie temperatures, spin reorientation temperature, magnetocrystalline anisotropy constant and magnetostriction of TbDyHoFe1.95 alloys with composition formulation (1-y)Tb0.36Dy0.64Fe1.95+yTb0.20Dy0.22Ho0.58Fe1.95 (0≤y≤1) were investigated. X-ray diffraction patterns demonstrate the TbDyHoFe1.95 alloys possess MgCu2-type cubic Laves structure. The Curie temperature Tc decreases slightly from 381 °C for Tb0.36Dy0.64Fe2 to 379 °C for y=0.3, 375°C for y=0.4 and 373°C for y=0.5. The spin reorientation temperature Tr increases from -94 oC for Tb0.36Dy0.64Fe2 to -70°C for y=0.3 and -51oC for y=0.5. The magnetocrystalline anisotropy constant K1 decreases with increasing y value. The magnetostriction was examined under applied magnetic field H (0
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