[1]高 蓉,罗小彬,王 巍.环/柱结构磁电复合振子的磁控谐振频率偏移[J].南京师范大学学报(自然科学版),2017,40(04):57.[doi:10.3969/j.issn.1001-4616.2017.04.009]
　Gao Rong,Luo Xiaobin,Wang Wei.Magnetically Tunable Resonance Shift of Ring/ColumnMagnetoelectric Composite Vibrator[J].Journal of Nanjing Normal University(Natural Science Edition),2017,40(04):57.[doi:10.3969/j.issn.1001-4616.2017.04.009]
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环/柱结构磁电复合振子的磁控谐振频率偏移()
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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40卷
期数:
2017年04期
页码:
57
栏目:
·物理学·
出版日期:
2017-12-30

文章信息/Info

Title:
Magnetically Tunable Resonance Shift of Ring/ColumnMagnetoelectric Composite Vibrator
文章编号:
1001-4616(2017)04-0057-07
作者:
高 蓉1; 罗小彬1; 王 巍1; 2
(1.南京师范大学物理科学与技术学院,江苏 南京 210023)(2.南京大学近代声学教育部重点实验室,江苏 南京 210093)
Author(s):
Gao Rong1; Luo Xiaobin1; Wang Wei1; 2
(1.School of Physics and Technology,Nanjing Normal University,Nanjing 210023,China)(2.Laboratory of Modern Acoustics of MOE,Nanjing University,Nanjing 210093,China)
关键词:
磁电耦合效应; 环柱磁电复合结构; 谐振频率; 本构方程
Keywords:
magnetoelectric coupling effect; PZT-ring/TDF-column; resonant frequency; constitutive equations
分类号:
TP212.1
DOI:
10.3969/j.issn.1001-4616.2017.04.009
文献标志码:
A
摘要:
从磁电耦合的角度,探讨磁场对环/柱结构压电/磁致伸缩复合振子谐振频率的调控作用. 利用磁致伸缩TbxDy1-xFe2-y(TDF)和压电材料Pb(Zr,Ti)O3(PZT)构成的环柱磁电复合结构,分别从理论和实验两方面研究了磁场对复合振子谐振频率的影响. 从压电相和磁致伸缩材相的本构方程出发,理论推导了压电相电容与磁场、谐振频率和材料参数的函数关系,数值模拟了环/柱状磁电复合振子的基频和一级谐振频率随磁场的变化; 实验
Abstract:
In consideration of magnetoelectric coupling effect,magnetically tunable electromechanical resonance with a dc bias magnetic field is proposed. Using PZT(Pb(Zr,Ti)O3)-ring/TDF(TbxDy1-xFe2-y)-column magnetoelectric composite vibrator,magnetically tunable resonance shift are theoretically studied and experimentally measured,respectively. Constitutive equations of piezoelectric and magnetostrictive phase are employed to describe the electric elastic and magnetic elastic coupling,and piezoelectric phase capacitance is a function of magnetic field,resonance frequency and material parameters. Frequency-dependent capacitances of the PZT-ring/TDF-column composite vibrator are numerically simulated under different magnetic field intensities. The resonance frequency shift rule of the composite vibrator was experimental studied. With magnetic field increasing,the fundamental frequency and primary resonance frequency of the composite vibrator increase to high frequencies and then to low frequencies,the resonance shift reaches maximum under H=200 Oe,the resonance frequency offsets are 9.50 kHz and 3.50 kHz,respectively. Numerical simulation of the resonant frequency offset curve is consistent with the experimental results.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-04-13.
基金项目:江苏省高校自然科学基金(15KJD430007)、南京师范大学国家自然科学基金预研项目(XYY2015015).
通讯联系人:王巍,教授,研究方向:磁电复合材料. E-mail:wangwei1@njnu.edu.cn
更新日期/Last Update: 2017-12-30