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

doi:10.3969/j.issn.1000-5641.2018.03.014

磁偶极作用对铁基纳米晶条带LDGMI效应的影响

doi: 10.3969/j.issn.1000-5641.2018.03.014

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

基金项目:

国家自然科学基金 11574084

国家自然科学基金 51572086

详细信息

作者简介:
苏亚攀, 男, 硕士研究生, 研究方向为磁性材料.E-mail:ypsu_xc@163.com

通讯作者:
赵振杰, 男, 教授, 博士生导师, 研究方向为磁性材料与器件.E-mail:zjzhao@phy.ecnu.edu.cn

中图分类号: O157.5
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- 文章访问数: 232
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- PDF下载量: 264
- 被引次数: 0
出版历程
- 收稿日期: 2017-04-20
- 刊出日期: 2018-05-25

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

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

摘要

摘要: 研究了多片Fe_73.5Cu₁Nb₃Si_13.5B₉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.
- 铁基纳米晶条带 /
- 纵向巨磁阻抗效应 /
- 磁偶极相互作用
Abstract: In this paper, the hysteresis loops, LDGMI (longitudinal driven giant magnetoimpedance) effect, and impedance phase variations of Fe_73.5Cu₁Nb₃Si_13.5B₉ 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.
- Fe-based nanocrystalline ribbon /
- longitudinal driven giant magneto impedance effect /
- dipolar magnetic interaction

HTML全文

图 1 (a) 多片铁基纳米晶条带的磁滞回线; (b)铁基纳米晶条带的各向异性场与片数关系

Fig. 1 (a) The hysteresis loops of Fe-based nanocrystalline ribbons; (b) Dependence of the anisotropy field with number of Fe-based nanocrystalline ribbons

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图 2 (a) 多片纳米晶条带的LDGMI效应的频谱; (b)铁基纳米晶条带的特征频率线性与片数的关系

Fig. 2 (a) The LDGMI spectrum of nanocrystalline ribbons; (b) Dependence of the characteristic frequency with number of Fe-based nanocrystalline ribbons

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图 3 (a) 多片纳米晶条带在频率为10 kHz时的LDGMI曲线; (b)多片纳米晶条带在频率为10 kHz时的相位曲线

Fig. 3 (a) The LDGMI curves of nanocrystalline ribbons at a frequency of 10 kHz; (b) The phase curves of nanocrystalline ribbons at a frequency of 10 kHz

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图 4 样品各向异性场和肩宽场在不同频率下的对比图

Fig. 4 The comparison spectrum of the anisotropic field and broad field of the sample under different driven frequencies

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图 5 不同驱动电流下单片铁基纳米晶条带的LDGMI曲线

Fig. 5 The curves of the LDGMI effect of the single Fe-based nanocrystalline ribbon under different driven currents

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图 6 铁基纳米晶条带肩宽场与驱动场在不同频率下的关系图

Fig. 6 Dependence of the broad field of Fe-based nanocrystalline ribbons with the driven field under different driven frequencies

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