[1]樊通声,王 巍.压电极化方向对磁电复合振子磁阻抗效应的影响[J].南京师范大学学报(自然科学版),2020,43(02):17-22.[doi:10.3969/j.issn.1001-4616.2020.02.004]
　Fan Tongsheng,Wang Wei.Influence of Piezoelectric Polarization Direction on theMagneto-Impedance Effect of Magnetoelectronic Composite Oscillator[J].Journal of Nanjing Normal University(Natural Science Edition),2020,43(02):17-22.[doi:10.3969/j.issn.1001-4616.2020.02.004]
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压电极化方向对磁电复合振子磁阻抗效应的影响()
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《南京师范大学学报》（自然科学版）[ISSN:1001-4616/CN:32-1239/N]

卷:
第43卷
期数:
2020年02期
页码:
17-22
栏目:
·物理学·
出版日期:
2020-05-30

文章信息/Info

Title:
Influence of Piezoelectric Polarization Direction on theMagneto-Impedance Effect of Magnetoelectronic Composite Oscillator
文章编号:
1001-4616(2020)02-0017-06
作者:
樊通声; 王 巍
南京师范大学物理科学与技术学院,江苏省光电技术重点实验室,江苏 南京 210023
Author(s):
Fan Tongsheng; Wang Wei
School of Physics and Technology,Nanjing Normal University,Jiangsu Provincial Key Laboratory ofPhotoelectric Technology,Nanjing 210023,China
关键词:
磁阻抗; 长度极化; 厚度极化; 谐振频率; 磁分辨率
Keywords:
magnetic impedance; length polarization; thickness polarization; resonant frequency; magnetic resolution
分类号:
O441.6 O482.52+6
DOI:
10.3969/j.issn.1001-4616.2020.02.004
文献标志码:
A
摘要:
本文研究了压电体分别沿长度和厚度极化的磁电复合振子的磁阻抗效应. 根据压电体的极化理论,在洛伦兹模型和德拜模型基础上,利用磁电耦合理论研究了磁电复合振子有效相对介电常数与磁场的关系,数值模拟了有效相对介电常数随磁场的变化. 由磁电复合振子的磁阻抗与有效相对介电常数的关系,理论分析了磁电复合振子在谐振频率下的磁阻抗效应. 在理论分析基础上,实验研究了“三明治”结构磁电复合振子的磁阻抗效应. 实验结果表明,在谐振频率下,磁场在0～50 mT范围内,当压电体的极化方向为长度极化时,其磁阻抗随磁场的变化率是压电体厚度极化的22倍,实验结果与理论模拟基本吻合. 在此基础上,对实验结果的磁分辨率进行了计算,在谐振频率下,压电体长度极化磁电复合振子的磁分辨率为2.76×10-12 T/μΩ,压电体厚度极化磁电复合振子的磁分辨率为78×10-12 T/μΩ,本研究为地磁场的探测提供了理论基础.
Abstract:
In this paper,the magnetoimpedance effect of magnetoelectric composite oscillators with piezoelectric bodies polarized along their length and thickness is studied. Based on the polarization theory of piezoelectric body,i.e. Lorentz model and Debye model,the relationship between effective relative permittivity of the magnetoelectric composite oscillator and magnetic field is studied by using the magnetoelectric coupling theory. The variation of effective relative permittivity with magnetic field is simulated numerically. Based on the relationship between the magnetic impedance of the magnetoelectric composite oscillator and effective relative permittivity,the magnetoimpedance effect of the magnetoelectric composite oscillator at the resonant frequency is theoretically analyzed. The magnetic impedance effect of “sandwich”structure magnetoelectric composite oscillator is experimentally studied. The experimental results show that when the magnetic field in the range of 0～50 mT and at the resonant frequency,the polarization direction of the piezoelectric body is the length polarization,the change rate of the magneto-impedance with the magnetic field is 22 times that of the thickness polarization. The experimental results are basically consistent with the theoretical simulation. On this basis,magnetic resolution of the experimental results is calculated at the resonant frequency,the magnetic resolution of the piezoelectric body length polarization magnetoelectric composite oscillator is 2.76×10-12 T/μΩ and the magnetic resolution of the piezoelectric body thickness polarized magnetoelectric composite oscillator is 78×10-12 T/μΩ. This study provides a theoretical basis for the detection of geomagnetic fields.

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相似文献/References:

[1]何文强,樊通声,王 巍.电容型磁阻抗效应的退磁因子影响研究[J].南京师范大学学报(自然科学版),2018,41(02):33.[doi:10.3969/j.issn.1001-4616.2018.02.007]
　He Wenqiang,Fan Tongsheng,Wang Wei.Effect of Demagnetizing Factor on CapacitiveType Magnetoimpedance Effect[J].Journal of Nanjing Normal University(Natural Science Edition),2018,41(02):33.[doi:10.3969/j.issn.1001-4616.2018.02.007]

备注/Memo

备注/Memo:
收稿日期:2019-08-31.
通讯作者:王巍,教授,研究方向:磁电耦合与器件. E-mail:wangwei1@njnu.edu.cn
更新日期/Last Update: 2020-05-15