Magnetic anisotropy and magnetostriction in FeNd alloys

The temperature dependence of magnetization, magnetic anisotropy, and magnetostriction is investigated for arc‐melted Fe_100−xNd_x (10.5 ≦ x ≦ 75) alloys in the temperature range between 77 and their Curie temperatures. The magnetization of Fe₁₇Nd₂ and Fe₂₃Nd₆ compounds are 137 and 100 e.m.u./g at 77 K, respectively. In x = 10.5 to 43 alloys, the uniaxial magnetic anisotropy due to the texture of Fe₁₇Nd₂ compound decreases with raising temperature. The magnetostriction of the alloys exhibits a broad maximum around 200 K. The forced linear magnetostriction of the alloys is large and exhibits a peak of about 75 × 10⁻¹⁰ Oe⁻¹ at the Curie temperature of the Fe₁₇Nd₂ compound.