考虑损耗的磁致/压电层合材料谐振磁电响应分析  

The resonant magnetoelectric response of magnetostrictive/piezoelectric laminated composite under the consideration of losses

作　　者：杨帆[1] 文玉梅[1] 李平[1] 郑敏[1] 卞雷祥[1] 

机构地区：[1]重庆大学光电工程学院国家教育部光电技术及系统重点实验室,重庆400030

出　　处：《物理学报》2007年第6期3539-3545,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60374045;50677072);国家高技术研究发展计划(863计划)(批准号:2006AA04Z337)资助的课题~~

摘　　要：运用等效电路法,对磁致/压电层合材料谐振状态下的磁电响应进行分析,得到了材料在谐振状态下的磁电电压转换系数理论计算公式.详细地分析了磁致/压电层合材料在谐振点附近的磁损耗、机械损耗、电损耗,并给出了各种损耗相应的计算方法和大小,发现谐振状态下,材料的主要损耗来源于机械损耗.分析结论较好地解释了磁电层合材料在不同偏置磁场下磁电响应的实验结果.The theoretical analysis of resonance magnetoelectric （ME） performances in longitude-transverse type magnetostrictive/ piezoelectric laminated composite is presented in this paper based on the equivalent circuit method, and the formula of ME voltage coefficient is obtained, which is useful to the composite design and optimization. To evaluate the ME voltage coefficient near the resonance, the losses such as eddy-current loss, mechanical loss, and dielectric loss are considered and formulated, which indicates that the mechanical loss plays the key role in dissipation. The analysis, which takes losses into account, gives better explanations to current experimental values.

关 键 词：磁致/压电层合材料 磁电效应 谐振 损耗分析 

分 类 号：TB34[一般工业技术—材料科学与工程]