The properties of LiCe co-substituted (Na1−xKx)0.5Bi4.5Ti4O15-based ceramics

✍ Scribed by Zhi-gang Gai; Yuan-yuan Feng; Jin-feng Wang; Ming-lei Zhao; Wen-bin Su; Li-mei Zheng; Chun-ming Wang; Shujun Zhang; Thomas R. Shrout

• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 283 KB
• Volume: 207
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200925236

✦ Synopsis

Abstract

The effect of K content on the properties of LiCe co‐substituted (Na~1−x~K~x~)~0.5~Bi~4.5~Ti~4~O~15~‐based ceramics was investigated. The Curie temperature (T~C~) gradually decreases from 641 to 551 °C with increasing the K content. The piezoelectric coefficient d~33~, thickness coupling factor k~t~, and mechanical quality factor Q of (Na~0.5~Bi~0.5~)~0.80~(Li~0.5~Ce~0.5~)~0.10~[]~0.10~Bi~4~Ti~4~O~15~ (x = 0.00) ceramic were found to be 28 pC/N, 25%, and 2693, respectively, together with the high T~C~ (∼641 °C) and stable piezoelectric properties, demonstrating that the (LiCe) modified Na~0.5~Bi~4.5~ Ti~4~O~15~‐based material a promising candidate for high temperature applications.