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对磁弹耦合在决定纳米晶软磁合金宏观磁性中的作用进行了探讨,高场磁化规律以及正电子湮没测量表明:对Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9合金,准位错偶极子造成的应力场对畴壁的钉扎效应是造成纳米晶软磁合金矫顽力的重要原因;结构缺陷造成的应力场与磁致伸缩的耦合作用对纳米晶软磁性能有重要的影响.在结构各向异性和磁弹耦合能共同作用下可解释纳米晶合金表现出最佳软磁性能.
The magnetic-magnetic coupling plays an important role in determining the macro-magnetic properties of nanocrystalline soft magnetic alloys. The field magnetization and positron annihilation measurements show that for the Fe 73.5 Cu 1 Nb 3 Nb 13.5 B 9 alloy, the quasi-dislocation dipole Of the stress field on the wall of the pinning effect is caused by the coercivity of nanocrystalline soft magnetic alloy an important reason; structural defects caused by the stress field and the magnetostrictive coupling of nanocrystalline soft magnetic properties have an important impact in the structure Anisotropic and magnetic-elastic coupling can explain the best soft magnetic properties of nanocrystalline alloys.