[1]汪志峰,何文强,王 巍.磁电复合振子PbZr0.48Ti0.52O3/Tb0.3Dy0.7Fe1.92的电容型磁阻抗效应[J].南京师范大学学报(自然科学版),2016,39(03):40.[doi:10.3969/j.issn.1001-4616.2016.03.007]
 Wang Zhifeng,He Wenqiang,Wang Wei.Capacitive Type Magnetoimpedance Effect of PbZr0.48Ti0.52O3/Tb0.3Dy0.7Fe1.92 in Magnetoelectric Composite Vibrator[J].Journal of Nanjing Normal University(Natural Science Edition),2016,39(03):40.[doi:10.3969/j.issn.1001-4616.2016.03.007]
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磁电复合振子PbZr0.48Ti0.52O3/Tb0.3Dy0.7Fe1.92的电容型磁阻抗效应()
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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39卷
期数:
2016年03期
页码:
40
栏目:
·物理学·
出版日期:
2016-09-30

文章信息/Info

Title:
Capacitive Type Magnetoimpedance Effect of PbZr0.48Ti0.52O3/Tb0.3Dy0.7Fe1.92 in Magnetoelectric Composite Vibrator
文章编号:
1001-4616(2016)03-0040-06
作者:
汪志峰1何文强1王 巍12
(1.南京师范大学物理科学与技术学院,江苏 南京 210023)(2.近代声学教育部重点实验室,南京大学,江苏 南京 210093)
Author(s):
Wang Zhifeng1He Wenqiang1Wang Wei12
(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:
磁电复合振子电容型磁阻抗谐振频率反谐振频率
Keywords:
magnetoelectric composite vibratorcapacitive type
分类号:
O441.6;O482.52+6
DOI:
10.3969/j.issn.1001-4616.2016.03.007
文献标志码:
A
摘要:
谐振频率及阻抗匹配是压电换能器中十分重要的参数. 基于压电陶瓷圆环PbZr0.48Ti0.52O3(PZT)和磁致伸缩材料铽镝铁Tb0.3Dy0.7Fe1.92(TDF)构成“环-环”磁电复合振子,实验研究磁场作用下,由磁电复合振子的有效介电常数变化引起的电容型磁阻抗以及磁控谐振频率偏移效应. 实验结果显示,谐振频率和反谐振频率下的磁阻抗可达18%、32%;当磁场为800 mT时,谐振及反谐振频率的最大偏移量约为9 kHz. 利用复合材料的磁-力-电耦合效应,对电容型磁阻抗及磁控谐振频率偏移进行了理论分析. 本研究为解决压电换能器谐振频率的漂移问题及阻抗匹配提供了实验及理论基础.
Abstract:
Resonance frequency and impedance matching are important parameters in piezoelectric transducer. In this paper,a magnetoelectric(ME)composite vibrator made of PbZr0.48Ti0.52O3/Tb0.3Dy0.7Fe1.92 double ring were developed. It was found that the variation of relatively effective permittivity of the ME composite resonator with a dc magnetic field is responsible for capacitive type magnetoimpedance effect. About 18% and 32% of magnetoimpedance have been achieved at resonance and anti-resonance frequencies of the ME resonator,respectively. In addition,the resonant frequency of ME composite vibrator shift with increasing dc magnetic field. The resonance and anti-resonance frequencies offset were about 9 kHz when?the?magnetic?field intensity was 800 mT. Based on the magnetic-force-electricity coupling effect,we theoretically analyzed the capacitive type magnetoimpedance effect and magnetically tuned mechanical resonances in the ME composite resonator. The study provides experimental and theoretical basis for solving the problem of resonance frequency shift and impedance mismatch in piezoelectric transducer.

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备注/Memo

备注/Memo:
收稿日期:2016-01-08. 
基金项目:江苏省普通高校学术学位研究生创新计划项目(KYLX15_0726)、南京师范大学2015年国家自然科学基金预言项目(基于宽带水声换能器的磁场调控压磁/压电复合振子谐振特性研究)(XYY2015015). 
通讯联系人:王巍,副教授,研究方向:复合材料磁电效应. E-mail:wangwei1@njnu.edu.cn
更新日期/Last Update: 2016-09-30