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W doping-dependent structural and ferroelectric properties of SrBi2Nb2O9 ferroelectric ceramics |
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| Authors: | Jie Qiu Guo-Zhen Liu Meng He Hao-Shuang Gu Tao-Sheng Zhou |
| Affiliation: | aBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China bFaculty of Physics and Electronic Technology, Hubei University, Wuhan 430062, China |
| Abstract: | The structural and ferroelectric characteristics of SrBi2(Nb1−xWx)2O9 (x=0–0.12) ferroelectric ceramics were investigated. SrBi2(Nb1−xWx)2O9 ceramics consisted of a single-phase layered perovskite structure when x was less than 0.06. Uniform microstructure and grain size reduction were observed after the introduction of W. The maximum remanent polarization of 16 μC/cm2 appeared at x=0.03, and the coercive field decreased with increasing concentration of W. The ferroelectric behavior of SrBi2(Nb1−xWx)2O9 ceramics is interpreted based on the Raman measurement. |
| Keywords: | Ferroelectricity Niobates Raman spectra |
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