华东师范大学学报（自然科学版） >

2018 , Vol. 2018 >Issue 3: 129 - 135,156

DOI: https://doi.org/10.3969/j.issn.1000-5641.2018.03.014

物理学与电子学

磁偶极作用对铁基纳米晶条带LDGMI效应的影响

  • 苏亚攀 ,
  • 潘海林 ,
  • 赵振杰 ,
  • 袁萌平
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  • 1. 华东师范大学 物理与材料科学学院, 上海 200062;
    2. 国家电网南阳供电公司, 河南 南阳 473000
苏亚攀,男,硕士研究生,研究方向为磁性材料.E-mail:ypsu_xc@163.com.

收稿日期: 2017-04-20

  网络出版日期: 2018-05-29

基金资助

国家自然科学基金（11574084，51572086）

收起

Influence of dipolar magnetic interaction on the LDGMI effect of Fe-based nanocrystalline ribbons

  • SU Ya-pan ,
  • PAN Hai-lin ,
  • ZHAO Zhen-jie ,
  • YUAN Meng-ping
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  • 1. School of Physics and Materials Science, East China Normal University, Shanghai 200062, China;
    2. State Grid Nanyang Power Supply Company, Nanyang Henan 473000, China

Received date: 2017-04-20

  Online published: 2018-05-29

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摘要

研究了多片Fe73.5Cu1Nb3Si13.5B9纳米晶条带的磁滞回线、纵向巨磁阻抗（Longitudinal Driven Giant Magneto-Impedance，LDGMI）效应及阻抗相位角的变化规律.研究发现，样品各向异性场随纳米晶条带片数线性增加，LDGMI曲线的"平台"宽度也线性展宽，这是相邻纳米晶条带的磁偶极相互作用导致的.同时，发现驱动场大小、频率对样品LDGMI曲线的"平台"宽度有调制作用，其肩宽场随驱动场频率的增加而增大以及随驱动场增强而减小.因此，本工作对多磁芯LDGMI器件的研制具有重要参考价值.

关键词： 铁基纳米晶条带; 纵向巨磁阻抗效应; 磁偶极相互作用

本文引用格式

苏亚攀 , 潘海林 , 赵振杰 , 袁萌平 . 磁偶极作用对铁基纳米晶条带LDGMI效应的影响[J]. 华东师范大学学报（自然科学版）, 2018 , 2018(3) : 129 -135,156 . DOI: 10.3969/j.issn.1000-5641.2018.03.014

Abstract

In this paper, the hysteresis loops, LDGMI (longitudinal driven giant magnetoimpedance) effect, and impedance phase variations of Fe73.5Cu1Nb3Si13.5B9 nanocrystalline ribbons are investigated. The results show that the anisotropy field and the platform width of the LDGMI curves increase linearly with the number of nanocrystalline ribbons. This stems from the dipole-dipole interactions between the ribbons. Simultaneously, the "platform" width was modulated by the frequency and intensity of the driven field, the broad field amplified with the frequency of the driven field increasing, and gradually decreased with the intensity of driven field increasing. Hence, the work has important reference value for the development of LDGMI devices with multiple cores.

Key words： Fe-based nanocrystalline ribbon; longitudinal driven giant magneto impedance effect; dipolar magnetic interaction

参考文献

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