Ni/Pb(Zr,Ti)O3/TbFe2层状复合材料的谐振磁电特性研究

摘要

采用化学镀和黏接法制备层状磁电复合材料Ni/PZT/TbFe2,研究其磁电性能及谐振频率随Ni层厚度的变化情况.结果表明:Ni/PZT/TbFe2层状磁电复合材料与其他结构的磁电性能不同,其一阶弯曲谐振峰值和纵向谐振峰值都很大.随着Ni层厚度的增加,Ni/PZT/TbFe2层状磁电复合材料的一阶纵向谐振峰值逐渐增大.结合实验数据和理论计算值得出了材料的一阶弯曲谐振频率fr1和一阶纵向谐振频率fΩ都随Ni层厚度的增加而向高频方向偏移.%Layered magnetoeleetric Ni/PZT/TbFe2 composites have been prepared by electroless deposition and bonding method. The influence of the Ni layer thickness on ME coupling and resonance frequency is discussed. The results show that the magnetoelectric coefficient of Ni/PZT/TbFe2 composites changes differently from that of other composites and two remarkable resonance peaks have been observed. The magnetoelectric voltage coefficient at the first-order longitudinal resonance mode increases as the Ni layer thickness increases. Both experimental and calculated data reveal that the firstorder bending resonance frequency fr1 and longitudinal resonance frequency fr2 increase with the Ni layer thickness.