纳米晶FeCuNbSiB多层膜的巨磁阻抗效应研究

功能材料, 2004, 35(6): 686-688.

纳米晶FeCuNbSiB多层膜的巨磁阻抗效应研究

李晓东 ^1, , 袁望治 ^2, , 赵振杰 ^3, , 阮建中 ^4, , 杨燮龙 ^5,

1.华东师范大学,物理系,上海,200062

2.华东师范大学,物理系,上海,200062

3.华东师范大学,物理系,上海,200062

4.华东师范大学,物理系,上海,200062

5.华东师范大学,物理系,上海,200062

基金项目: 上海市科委资助项目(0252nm004,0352nm060)

关键词： X射线衍射谱 , M(o)ssbauer谱 , 巨磁阻抗效应 , Fe73.5Cu1Nb3Si13.5B9薄膜

Giant magneto-impedance effect in FeCuNbSiB nanocrystalline films

研究了纳米晶态下Fe73.5Cu1Nb3Si13.5B9多层膜的巨磁阻抗(GMI)效应.研究结果表明纵向巨磁阻抗(LMI)效应在3MHz时取得最大值为44%,横向巨磁阻抗(TMI)效应在6MHz时取得最大值为46%.LMI与TMI随外磁场有不同的变化行为,TMI曲线具有阈值行为,超过阈值磁场后出现明显的磁阻抗效应.晶化后出现最大值阻抗效应所对应的频率下降,由非晶态下的13MHz下降为晶化后的3MHz.薄膜样品的磁阻抗效应与样品中磁矩的空间分布密切相关,磁矩垂直面向分布时,磁阻抗效应下降为5%

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材料期刊网

纳米晶FeCuNbSiB多层膜的巨磁阻抗效应研究

Giant magneto-impedance effect in FeCuNbSiB nanocrystalline films

参考文献