Multifunctional BNT-based ferroelectric ceramics with large electrostrain and strong photoluminescence properties  

作　　者：Di Wang Jiaqi Zhao Yue Li Chengshuo Zhang Luchang Yu Yaqi Zhang Xiaohua Yang Jigong Hao Wei Li 

机构地区：[1]Laboratory of Sensitive Materials and Devices Shandong Department of Education,School of Materials Science and Engineering Liaocheng University,Liaocheng 252059,P.R.China

出　　处：《Journal of Advanced Dielectrics》2024年第3期58-65,共8页先进电介质学报（英文）

基　　金：supported by the Natural Science Foundation of Shandong Province,China(Nos.ZR2020ME033 and ZR2020ME031);Research Foundation of the Liaocheng University(No.318011906);Shandong College Students’Innovation and Entrepreneurship Training Program(No.S202210447017);the Undergraduate Training Programs for Innovation and Entrepreneurship of the Liaocheng University(No.cxcy2022022).Di Wang and Jiaqi Zhao contributed equally to this work.

摘　　要：The development of multifunctional materials with optical and electrical properties has become a research hotspot in recent years.In this work,multifunctional 0.935(Bi_(0:5)Na_(0:5))TiO_(3)–0.065BaTiO_(3)(BNT–BT)-based ferroelectric ceramics doped with small amounts of CaMAlO_(4)(M=Dy,Ho)were prepared,and the effect of CaMAlO_(4)on the electrostrain and photoluminescence properties of the ceramics was studied.The results showed that the CaMAlO_(4)addition weakened the ferroelectric properties of the BNT–BT matrix,and promoted the improvement of the electrostrain performance.For samples doped with 1.5 mol%CaMAlO_(4),the unipolar strain Suni reached the largest values,which were 0.33%(M=Dy)and 0.38%(M=Ho)under an electric field of 70 kV/cm,corresponding to a large signal d^(*)_(33)(Smax=Emax)of 471 pm/V(M=Dy)and 543 pm/V(M=Ho),respectively.In addition,due to the existing Dy^(3+)and Ho^(3+)luminescent ions,the modified samples exhibited excellent photoluminescence performance,which exhibited bright yellow emission(M=Dy)and green emission eM=HoT under the blue excitation.Due to their multifunctional features,these materials have potential applications as“on-off”actuators,optical-electro integration and coupling devices.

关 键 词：Ferroelectric ceramics PEROVSKITE electrostrain PHOTOLUMINESCENCE 

分 类 号：TM28[一般工业技术—材料科学与工程]