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.
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.
