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The development of multifunctional materials with optical and electrical properties has become a research hotspot in recent years. In this work, multifunctional 0.935(BiFormula: see textNaFormula: see text)TiO 3 –0.065BaTiO 3 (BNT–BT)-based ferroelectric ceramics doped with small amounts of CaMAlO 4 (Formula: see text, 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 1.5Formula: see textmol% CaMAlO 4 , the unipolar strain Formula: see text reached the largest values, which were 0.33% (Formula: see text) and 0.38% (Formula: see text) under an electric field of 70Formula: see textkV/cm, corresponding to a large signal Formula: see text (Formula: see text) of 471Formula: see textpm/V (Formula: see text) and 543Formula: see textpm/V (Formula: see text), respectively. In addition, due to the existing DyFormula: see text and HoFormula: see text luminescent ions, the modified samples exhibited excellent photoluminescence performance, which exhibited bright yellow emission (Formula: see text) and green emission Formula: see text under the blue excitation. Due to their multifunctional features, these materials have potential applications as “on-off” actuators, optical-electro integration and coupling devices.
Wang et al. (Thu,) studied this question.