Role of BO6 octahedral distortion on high temperature piezoelectric properties in Bi3-x(Li0.5Sm0.5)xTiNbO9. Issue 15 (1st August 2022)

• Record Type: Journal Article
• Authors: Hou, Dingwei; Fan, Huiqing; Zhang, Ao; Jia, Yuxin; Wang, Weijia
• Is Part Of: Ceramics international. Volume 48:Issue 15(2022)
• Page Start: 22204
• Page End: 22212
• Publication Date: 2022-08-01
• Subjects: High temperature piezoelectric ceramics -- Bismuth layer structured ferroelectrics -- Rietveld refinement -- Defect analysis; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.04.217
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: A series of bismuth layer structured ferroelectrics (BLSFs) Bi3- x (Li0.5 Sm0.5 ) x TiNbO9 (abbreviated as BTNO-100 x LS, x = 0, 0.01, 0.02, and 0.03) high temperature piezoelectric ceramics were prepared by solid state reaction sintering. The microstructure, piezoelectric properties, and electrical conductivity of the sintered ceramics were studied systematically. The introduction of (Li0.5 Sm0.5 ) 2+ ions does not change the bismuth layered structure obviously, but it will overmelt and affect its comprehensive properties with the increase of doping content. At last, the piezoelectric coefficient ( d 33 ) of ∼9.6 pC/N and the Curie temperature ( T c ) is 921.3 °C, which shows good temperature stability and cycle stability, and the mechanical quality factor ( Q m ) reaches 2694.3 for x = 0.01 composition. These results show that BTNO-1LS is an excellent candidate for high temperature piezoelectric ceramics.