Sm-Doped PIN-PMN-PT Transparent Ceramics with High Curie Temperature, Good Piezoelectricity, and Excellent Electro-Optical Properties
Fengji Zheng, Xue Tian, Ze Fang, Jinfeng Lin, Ye Lü, Wen Gao, Rui Xin, Dashi Fu, Yang Qi, Zhaozhen Ma, Wanneng Ye, Yalin Qin, Xiaoxiong Wang, Yongcheng Zhang
Abstract
Transparent piezoelectric materials are capable of coupling several physical effects such as optics, acoustics, electricity, and mechanical deformation together, which expands applications for mechanical-electro-optical multifunctional devices. However, piezoelectricity, transparency, and Curie temperature restrict each other, so it is difficult to achieve high piezoelectricity with both good transparency and a high Curie point. In this paper, Sm-doped 24Pb(In 1/2 Nb 1/2 )O 3 -42Pb(Mg 1/3 Nb 2/3 )O 3 -34PbTiO 3 (PIN-PMN-PT) transparent ceramic with a high piezoelectric coefficient of 905 pC/N, excellent electro-optical coefficient of 814 pm/V, and high Curie-point of 179 °C is fabricated. Sm doping effect on the phase structures, piezoelectricity, ferroelectricity, optical transparency, electro-optical properties, and thermal stability is systematically investigated. Compared with PMN-PT transparent ceramics, PIN-PMN-PT transparent ceramics exhibit better temperature stability. Electro-optical modulation and energy conversion are achieved using PIN-PMN-PT transparent piezoelectric ceramic, which indicates that it has great potential to develop mechanical–electrical–optical multifunctional coupling devices for optical communication, energy harvesting, photoacoustic imaging, and so on.