镍铁氧体-锆钛酸铅层状复合物的低频磁电耦合  

Low-frequency magnetoelectric coupling of NFO-PZT layered composites

作　　者：曹鸿霞[1,2] 张仙玲[1,3] 刘清惓[1,2] 王友保[1,2] 

机构地区：[1]南京信息工程大学江苏省气象探测与信息处理重点实验室,江苏南京210044 [2]南京信息工程大学电子与信息工程学院,江苏南京210044 [3]南京信息工程大学物理与光电工程学院,江苏南京210044

出　　处：《传感器与微系统》2013年第9期53-57,共5页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(61072137;41075026;41275042);江苏高校优势学科建设工程资助项目

摘　　要：利用弹性力学模型,简要推导了低频下磁致伸缩—压电双层复合材料磁电电压系数的表达式,计算了镍铁氧体—锆钛酸铅(NiFe2O4—Pb(Zr,Ti)O3,NFO—PZT)层状复合材料的横向磁电耦合。采用溶胶—凝胶法制备NiFe2O4样品,将其与PZT胶合制成NFO—PZT和NFO—PZT—NFO层状复合材料,研究了其在低频下的横向磁电效应。在约31.8 kA·m-1的偏置磁场下,NFO—PZT—NFO的横向磁电耦合达到的峰值为761.8 mV.A-1,约是NFO—PZT的3倍多。三层的界面耦合参数明显高于双层。Use elastic mechanics model to briefly derive the magnetoelectric voltage coefficients of magnetostrictive-piezoelectric bilayer according to the constitutive equations,the transverse magnetoelectric coupling of nickel ferrite-lead zirconate titanate（NiFe2O4—Pb（Zr,Ti）O3,NFO-PZT）layered composites are calculated by using the corresponding material parameters of individual phases.NiFe2O4 samples are synthesized with sol-gel technique.Layered composites NFO-PZT and NFO-PZT-NFO are fabricated by binding discs of nickel ferrite NFO and commercially available PZT,and the transverse magnetoelectric effect is researched.The peak value of transverse magnetoelectric coupling for NFO-PZT-NFO trilayer reaches 761.8 mV·A-1 under a bias magnetic field of about 31.8 kA·m-1,which is about three times as large as that of NFO-PZT bilayer.The interface coupling parameters of trilayer is significantly higher than that of bilayer.

关 键 词：磁电效应 层状复合物 镍铁氧体 锆钛酸铅陶瓷 

分 类 号：TM201.3[一般工业技术—材料科学与工程]