| Rapidly solidified SmFe7+xMx(M=Mo, V. Ti) compounds were found to crystallize in the Sm(Fe, M)7 based stable magnetic phase by introducing a second transition element into the Sm-Fe binary system. The Sm(Fe, M)7 phase exhibits a high Curie temperature(Te= 355℃) with a quite high intrinsic coercivity(He= 3~6 kOe). The Sm(Fe, M)7 phase remains stable even after annealing once formed during rapid solidification. The primary reason for the high coercive force is due to the fine grain size(2000~8000 Å) of the magnetic Sm(Fe, M)7 matrix phase and the enhanced Curie temperature is attributed to a extended solid-solubility of the additive transition elements in Fe matrix causing a volume expansion of the Sm(Fe, M)7 cell. |
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