【摘要】 研究了电流退火工艺对铁基非晶合金Ｆｅ８４Ｚｒ８Ｎｂ３－５Ｂ３－５Ｃｕ１ 薄带巨磁阻抗效应的影响．实验结果表明，该铁基合金的巨磁阻抗ΔＺ／ Ｚ随退火电流的增加而增强，当电流为８２０ ｍ Ａ 时，ΔＺ／ Ｚ 达到最大值６２ ％ ，阻抗变化灵敏度可达约０－２３ ％ （Ａ／ｍ） － １ ．结合此合金在电流退火前后电性能和软磁性能的演变，讨论了材料的巨磁阻抗效应借助趋肤效应与交流频率和外加纵向磁场的关系．更多还原

【Abstract】 The influence of current annealing process on the giant magneto\|impedance(GMI) effect of Fe 84 Zr 8Nb 3.5 B 3.5 Cu\-1 ribbons was studied.The obtained results showed that with increasing annealing current,the GMI ratio ΔZ/Z(ΔZ/Z=(Z(H)-Z(H\-\{ max\}))/ Z(H \-\{max\})) is enhanced.The maximal GMI ratio of about 62% is obtained for the sample annealed at 820?mA for 10?min,while the sensitivity can reach a value up to about 0.23% (A/m)\+\{-1\}.In combination with the evolution of electrical and soft magnetic properties,the dependence of the GMI effect on the frequency and applied longitudinal field has been discussed by means of skin effect.更多还原