W doping-dependent structural and ferroelectric properties of SrBi2Nb2O9 ferroelectric ceramics

✍ Scribed by Jie Qiu; Guo-Zhen Liu; Meng He; Hao-Shuang Gu; Tao-Sheng Zhou

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 464 KB
• Volume: 400
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2007.06.029

✦ Synopsis

The structural and ferroelectric characteristics of SrBi 2 (Nb 1Àx W x ) 2 O 9 (x ¼ 0-0.12) ferroelectric ceramics were investigated. SrBi 2 (Nb 1Àx W x ) 2 O 9 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 mC/cm 2 appeared at x ¼ 0.03, and the coercive field decreased with increasing concentration of W. The ferroelectric behavior of SrBi 2 (Nb 1Àx W x ) 2 O 9 ceramics is interpreted based on the Raman measurement.