Fe_(83)Nb_6B_(11)合金的饱和磁化强度和有效各向异性  

TEMPERATURE DEPENDENCE OF SATURATION MAGNETIZATION AND EFFECTIVE MAGNETIC ANISOTROPY OF Fe_(83)Nb_6B_(11) ALLOY

作　　者：张雅静[1] 王治[1] 程力智[1] 赵恒和[1] 杨洪才[1] 何开元[1] 

机构地区：[1]东北大学

出　　处：《材料研究学报》2001年第4期399-402,共4页Chinese Journal of Materials Research

基　　金：国家自然科学基金资助项目 59871013

摘　　要：研究了Ｆｅ_（８３）Ｎｂ_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_（８３）Ｎｂ_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．The correlations between saturation magnetization Ms, effective magnetic anisotropy 〈k〉 and the temperature T(Ms-T,〈K〉-T curves) for the Fe83Nb6B11 amorphous alloys annealed at 0-580°C 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 decreases with temperature very quickly. 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.

关 键 词：非晶合金 饱和磁化强度 磁导率 有效各向异性 铁钕硼合金 Fe83Nb6B11合金 

分 类 号：TG139.8[一般工业技术—材料科学与工程] TG113.225[金属学及工艺—合金]