| 复合丝巨磁阻抗效应的研究 |
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| 引用本文： | 王蕊丽,赵振杰,袁望治,阮建中,杨燮龙. 复合丝巨磁阻抗效应的研究[J]. 功能材料, 2007, 38(10): 1594-1596 |
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| 作者姓名： | 王蕊丽 赵振杰 袁望治 阮建中 杨燮龙 |
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| 作者单位： | 1. 上海水产大学,物理教学基础部,上海,200090
2. 华东师范大学,物理系,上海,200062 |
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| 基金项目： | 国家自然科学基金 , 上海市科委资助项目 , 上海市高校后备人才计划 |
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| 摘 要： | 利用化学渡方法制备了芯层为铁磁层和芯层为导电层的两种复合丝,比较研究了它们的巨磁阻抗特性,结果发现芯层为铁磁层的复合丝在60MHz时取得最大值107%,而芯层为BeCu的复合丝在300kHz时就获得最大值108%.这是因为BeCu/绝缘层/NiCoP在低频时有较大的磁电阻效应,同时,由于芯层电阻较小,R与X在较低频就可比拟.磁阻抗比不仅取决于磁电阻比、磁感抗比,还与R和X的相对比值有关.要想获得显著的磁阻抗效应,要求材料不仅具有良好的软磁特性,而且电流通过部分还具有电阻率小的特点.
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| 关 键 词： | 巨磁阻抗效应 化学镀 趋肤效应 复合结构 |
| 文章编号： | 1001-9731（2007）10-1594-03 |
| 修稿时间： | 2007-01-24 |
Giant magneto-impedance effect in composite wires |
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| WANG Rui-li,ZHAO Zhen-jie,YUAN Wang-zhi,RUAN Jian-zhong,YANG Xie-long. Giant magneto-impedance effect in composite wires[J]. Journal of Functional Materials, 2007, 38(10): 1594-1596 |
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| Authors: | WANG Rui-li ZHAO Zhen-jie YUAN Wang-zhi RUAN Jian-zhong YANG Xie-long |
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| Affiliation: | 1. Teaching Foundation Department of Physics,Shanghai Fisher University, Shanghai 200090,China; 2 . Department of Physics, East China Normal Universitv,Shanghai 200062.China |
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| Abstract: | Using electroless deposition, the composite wires with ferromagnetic core and conductive core were produced. The properties of GMI were investigated, the composite wires with ferromagnetic core obtained the maximum 107% at f=60MHz, and the composite wires with BeCu core obtained the maximum 108% at f= 300kHz. An obvious MR effect is observed in the CuBe/insulator/NiCoP composite wires at lower frequency, then R and X make comparative contribrtion to the total MI ratio. The results show that MI ratio is dependent not only on the values of and but also on the ratio between R and X, so the obvious MI effect can be observed not only soft magnetic properties but also lower resistivity. |
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| Keywords: | giant magneto-impedance effect eleetroless deposition skin effect |
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