【摘要】 研究了Ｆｅ_８３Ｎｂ_６Ｂ（１１）合金的饱和磁化强度Ｍｓ及有效各向异性＜ｋ＞与温度Ｔ的关系、结果表明：淬态Ｆｅ_８３Ｎｂ_６Ｂ（１１）非晶合金的有效各向异性＜ｋ＞随温度的升高下降的幅度很大，其原因主要是由 于磁致伸缩λｓ或应力σ耦合造成的 热处理后的样品，在同一测试温度下，饱和磁化强度Ｍｓ及有效各 向异性＜ｋ＞随热处理温度的升高而增大，原因是饱和磁化强度Ｍｓ和有效各向异性＜ｋ＞主要 α－Ｆｅ相的 贡献，热处理温度升高，α－Ｆｅ体积分数增大，有效各向异性Ｍｓ及＜ｋ＞增大用交换作用理论解释了随着热处理温度的升高材料的有效各向异性＜ｋ＞随温度变化缓慢．更多还原

【Abstract】 The correlations between saturation magnetization Ms. effective magnetic anisotropy <k> and the temperature T（Ms - T, <k> - Tcurves） for the Fe₈₃Nb₆B₁₁ amorphous alloys annealed at 0⁵80℃ were investigated. The results show that the effective magnetic anisotropy of as-quenched amorphous ribbons decreases very quickly with increasing temperature. The reason is mainly due to the stress-induced anisotropy, which decrease with temperature very quick. The values of <k> and Ms of annealed samples increase with increasing annealing temperature, indicating that the volume fraction of the crystallized phase （α-Fe） increases and the values of <k> and Ms are mainly determined by the nanocrystalline phase. The experimental results of the <k> - T curves of crystalline samples were explained using the theory of exchange interaction among α-Fe grains.更多还原