Preparation and characterization of high Curie-temperature piezoelectric ceramics in a new Bi-based perovskite of (1 − x)PbTiO3-xBi(Zn1/2Hf1/2)O3. Issue 8 (11th July 2017)

• Record Type: Journal Article
• Authors: Pan, Zhao; Chen, Jun; Fan, Longlong; Liu, Hui; Zhang, Linxing; Hu, Lei; Ren, Yang; Liu, Laijun; Fang, Liang; Fan, Xi'an; Li, Yawei; Xing, Xianran
• Is Part Of: Inorganic chemistry frontiers. Volume 4:Issue 8(2017)
• Page Start: 1352
• Page End: 1355
• Publication Date: 2017-07-11
• Subjects: Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c7qi00294g
• Languages: English
• ISSNs: 2052-1553

Abstract

Abstract : The increasing trend of T C is non-monotonic, which corresponds well with that of c / a in the (1 − x )PbTiO3 - x Bi(Zn1/2 Hf1/2 )O3 solid solutions. Abstract : To meet the increasing demand for high temperature piezoelectric actuator and transducer applications, much attention has been paid on exploring piezoelectric materials which can work efficiently under high temperature conditions. In the present study, a new Bi-based perovskite (ABO3 ) of (1 − x )PbTiO3 - x Bi(Zn1/2 Hf1/2 )O3 has been investigated. For the compositions of x < 0.20, it is interesting to observe that the tetragonality ( c / a ) remains relatively constant over the entire tetragonal phase. This unusual phenomenon is in contrast to the behavior of most PbTiO3 -based solid solutions, wherein the c / a is usually reduced. As a result, the Curie temperature ( T C ) increases from 490 °C for pure PbTiO3, to as high as 528 °C for x = 0.10, indicating the present PbTiO3 -Bi(Zn1/2 Hf1/2 )O3 to be a high- T C piezoelectric material. It is proposed that the maintained large tetragonality and high T C could be attributed to the large spontaneous polarization ( P S ) displacements induced by the strong Pb/Bi-O hybridization and coupling interactions between Pb/Bi and B-site ferroelectric-active cations.