Author/Authors :
Zhang، نويسنده , , Haiwu and Chen، نويسنده , , Chao and Zhao، نويسنده , , Xiangyong and Deng، نويسنده , , Hao and Ren، نويسنده , , Bo and Li، نويسنده , , Xiaobing and Luo، نويسنده , , Haosu and Li، نويسنده , , Shundao، نويسنده ,
Abstract :
Dielectric, ferroelectric and piezoelectric properties of lead-free Na1/2Bi1/2TiO3–xK1/2Bi1/2TiO3 (NBT–xKBT) ferroelectric single crystals were characterized systematically. With increasing KBT concentration, the remanent polarization and coercive electric field decrease, while the piezoelectric constant and the electromechanical coupling coefficient increase. The evolution of average and local structures as a function of temperature and composition was investigated using in-situ X-ray diffraction and Raman spectroscopy. The structure/property relationship of NBT–xKBT single crystals was discussed in detail.
