摘要
运用流延成型法制备了具有良好铁电铁磁性能的2-2型多层(CoFe_2O_4-Pb(Zr_(0.52)Ti_(0.48))O_3)_n[(CFOPZT)n]磁电复合薄膜。通过X射线衍射仪、扫描电镜、振动样品磁强计和铁电测试仪测试研究了(CFO-PZT)n复合薄膜的组织结构、铁磁和铁电性能。结果表明,钙钛矿结构的PZT和尖晶石结构的CFO相对均匀地分布在多层复合薄膜各层中,界面平整均匀。随热处理温度的升高,薄膜致密度提高,晶粒长大,但相结构未变,无新相形成。900℃热处理的(CFO-PZT)n复合薄膜结晶更完善,磁电性能好,剩余极化强度为32.63μC/cm^2,饱和磁化强度高达80.56kA/m,在2.29×10~4 A/m偏置磁场处有最大磁电耦合系数17.69kV/(cm·T)。
In this paper,（CoFe2O4– Pb（Zr（0.52）Ti（0.48））O3）n[（CFO-PZT）n]composite films,which belongs to 2-2 type multi-layer and have good ferroelectric ferromagnetism,were prepared by the tape casting method.The surface morphology,ferromagnetism and ferroelectric properties of（CFO-PZT）ncomposite films were characterized by X-ray diffractometer,scanning electron microscopy,vibrating sample magnetometer and TFAnalyzer2000 UL ferroelectric tester.The results show that PZT with the perovskite structure and CFO with the spinel structure are uniformly distributed in the multi-layer composite films,and the interface is even and uniform.With the increasing in annealing temperature,the density of the films increases and the grains grow up,but the phase structure does not change and no new phase is formed.The crystal of（CFO-PZT）ncomposite film heattreated at 900 ℃ was more perfect,and its magnetoelectric properties were good.The remnant polarization is 32.63μC/cm^2,saturation magnetization is as high as 80.56 kA/m and the magnetoelectric coupling coefficient is 17.69 mV/（cm·T）at 2.29×10~4 A/m bias magnetic field.
作者
赵乐
苏玉长
张晶
喻秋山
热比古丽.图尔逊
罗中保
岳士翔
ZHAO Le;SU Yuchang;ZHANG Jing;YU Qiushan;REBIGULI·tursun;YUE Shixiang(School of Materials Science and Engineering,Central South University,Changsha 410083,China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2018年第8期8200-8204,8210,共6页
Journal of Functional Materials
基金
国家自然科学基金资助项目(21361007)
国防探索研究基金资助项目(71314077)
关键词
铁酸钴
锆钛酸铅
流延成型法
复合薄膜
热处理温度
cobalt ferrite
lead zirconate titanate
tape casting method
composite film
heat treatment temperature
