Structural, magnetic and magnetostrictive properties of Co-doped Tb_(1-x)Ho_xFe_2 (0≤ x ≤1.0) alloys

摘要

Structural, magnetic, and magnetostrictive properties of Tb_(1-x)Ho_xx(Fe_(0.8)Co_(0.2))_2 (0 ≤x ≤ 1.0) alloys have been investigated by means of x-ray diffraction, ac initial susceptibility, an alternating gradient magnetometer and a standard strain gauge technique. A single (Tb,Ho)(Fe,Co)2 Laves phase with a cubic MgCu2-type structure is formed when 0.50 < x < 1.0, while the secondary phase with a PuNi3-type structure occurs at higher Tb content for 0 < x < 0.40. The easy direction of magnetization (EMD) is observed toward (111) when 0