| 摘要 |
PURPOSE:To obtain high magnetic characteristic without using a rare-earth element by a method wherein there is provided a super-structure that a lattice of a FePt or Fe3Pt systematic alloy is held periodicity and systematically incorporated in a crystal lattice of Fe, Co or a FeCo alloy. CONSTITUTION:This permanent magnetic material comprises a systematic alloy (main phase) composed of Fe20-xCoxPt4 that FePt or Fe3Pt is incorporated into a Fe, Co or FeCo alloy. Incidentally, it is possible to obtain an uniaxial anisotropy excellent in the all range of 0<=X<=20. In addition, unit cells of Fe3Pt of L12 structure and a Fe or FeCo alloy are alternately stacked and the structural anisotropy is given and a large magnetic anisotropy can be obtained due to effects of a large spin orbital mutual act of Pt. Further, as the Fe or FeCo alloy has a large saturated magnetization, if respective characteristics function, the maximum energy product of a system increases. |
