Intrinsic magnetic properties of (Sm,Gd)Fe12-based compounds with minimized addition of Ti
作者： P. Tozman , H. Sepehri-Amin , T. Ohkubo , K. Hono
DOI: 10.1016/J.JALLCOM.2020.157491
关键词: Phase (matter) 、 Chemical substance 、 Magnetic anisotropy 、 Crystallography 、 Atomic orbital 、 Inductive coupling 、 Magnet 、 Curie temperature 、 Anisotropy 、 Materials science
摘要: Abstract SmFe12-based compounds with the ThMn12 type structure are considered to be potential candidates for rare-earth-lean permanent magnets; however, their poor phase stability has hindered practical application. In this work, effects of Gd on and elimination α-Fe (Sm0.8Gd0.2)(Fe0.8Co0.2)12-xTix (x = 0.5, 0.6, 0.65, 0.75, 0.85, 1) investigated. A single 1:12 was obtained (Sm0.8Gd0.2)(Fe0.8Co0.2)11.25Ti0.75 compound excellent intrinsic magnetic properties at 300 K saturation magnetization, μ0Ms = 1.46 T, anisotropy field, μ0Ha = 9.24 T, Curie temperature, Tc = 816 K. Unlike Gd-free sample, rapid decay μ0Ms μ0Ha elevated temperatures Gd-doped sample; originated from hybridization between 5d orbitals 3d Fe along increase in coupling rare earth (RE) sublattices. a higher field above 400 K compared those previously reported Sm(Fe0.8Co0.2)11Ti1 (Sm0.8Zr0.2)(Fe0.8Co0.2)11.5Ti0.5 Nd2Fe14B compound.
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