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中文摘要：
将超磁致伸缩材料（GMM）、压电材料（PZT-5H）与超声变幅杆复合，构造了一种新型的磁电换能器．超声变幅杆具有聚能和放大应变的功能，可以数十到数百倍增强换能过程中对压电材料的激励，提高机电换能输出和增强磁电耦合效应．实验表明，在800 Oe偏置磁场和峰峰值为1 Oe交变磁场激励下，谐振点处的磁电耦合电压峰峰值达到498mV，在负载电阻为2．55kΩ时，输出功率达到4．08μw．
英文摘要：
Magnetoelectric effect has gained considerable attention over the past few years. A much higher magnetoelectric voltage coefficient is desirable. This paper presents a new magnetoelectric transducer with synthesizing the advantages of giant magnetostrictive material, piezoelectric material and ultrasonic horn. The unique energy concentration and strain amplification features of ultrasonic horn will greatly enhance the excitation to the piezoelectric material and in turn increase the magneto-elastic-electric conversion efficiency. The experimental results show that the new ME device can obtain a ME voltage as high as 498 mV under an excitation of 10e AC magnetic field superimposed with an 800 Oe bias magnetic field, which is larger than that of former laminate composite structure. And the output power attains 4. 08 μW under a 2.55 kΩ load resistance.
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