Terfenol-D/PZT和弹性基板阵列换能器的磁电效应研究  

Research on Magnetoelectric Effect of Array Transducer Using Terfenol-D/PZT and Elastic Substrate

作　　者：张亚非[1] 李平[1] 文玉梅[1] 陈蕾[1] 

机构地区：[1]重庆大学光电工程学院光电技术及系统教育部重点实验室,重庆400044

出　　处：《传感技术学报》2009年第9期1249-1254,共6页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金资助(50830202;60774055;10776039);国家863计划资助(2007AA12Z132;2006AA04Z337);国家教育部博士点资助基金资助(20060611029)

摘　　要：利用共振原理,将磁致伸缩材料(Terfenol-D)、压电材料(PZT-8)复合于弹性基板上构造了一种新型的换能器。当激励磁场的频率等于或者接近于弹性基板的固有频率时,Terfenol-D将驱动弹性基板振动并发生共振,粘结于弹性基板上的压电材料的输出电压将达到最大。实验研究表明,在800Oe偏置磁场和1Oe交变磁场激励下,在谐振点392kHz处,阵列结构换能器的最大磁电耦合电压系数和最大输出功率分别达到了235.5mV/Oe和2.403μW,相比MP层合结构换能器,分别提高了13.77%和33.7%。The magnetoelectric （ME） effect of Terfenol-D and PZT-8 bonded on an elastic substrate was reported. The developed deviee takes advantage of resonance. The substrate resonance occurs when the Terfenol-D plate oscillates at frequencies near the natural frequencies of the substrate,producing a much greater response to finite AC magnetic field input. The maximum ME voltage coefficient achieves 235.5 mV/Oe at resonance from an excited magnetic field of I Oe superimposed with a bias field of 800 Oe, and the maximum electrical power of the array structure transducer reaches 2. 403 μW at resonance frequency 392 kHz, increasing 13.77% and 33.7% relative to MP laminate structure transducer,respectively.

关 键 词：磁致伸缩材料 压电材料 磁电耦合效应 阵列 

分 类 号：O482[理学—固体物理] O487[理学—物理]