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Low-temperature magnetic measurements have been made on pseudoternary compounds Nd2(Fe0.9M0.1)14 B(M=Co, Ni, Ru) in order to study the effect of partial replacement of Fe by other transition metals on the spin reorientation phenomena. The spin reorientation temperature (Tsr) decreases from 136 K for ternary Nd2Fe14B to 128 K for 10% Co replacement, to 118 K for 10% Ni replacement, and to 92 K for 10% nonmagnetic Ru replacement. The extrapolated 0 K tilting angle of easy magnetization from the tetragonal c axis decreases from 30° of Nd2Fe14B to 20° for M=Co, 19° for M=Ni, and 18° for M=Ru.
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Yen et al. (1987) studied this question.
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