同时研究了不同偶极相互作用强度下的剩磁和使磁化强度平行于外场方向分量由正变为负的临界场。
The remanence and the critical field refers to the field that makes the magnetization transit from positive value to negative value, are studied at various strength of the dipolar interaction.
这是由于材料中的顺磁相在低温时变成铁磁相，使两相的饱和磁化强度差减小的结果。
This fact is duo to the transition to ferromagnetic phase from paramagnetic phase and to the reduction of the difference of magnetization.
铁磁类物质磁化后，内部的磁畴整整齐齐、方向一致地排列起来，使磁性加强，就构成磁铁了。
Ferromagnetic kind material after magnetization, the internal magnetic light-induced very neat, the direction to align, magnetic strengthening, constitutes the magnet.
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