Issue 6, 2018

Large spontaneous polarization in polar perovskites of PbTiO3–Bi(Zn1/2Ti1/2)O3

Abstract

PbTiO3–Bi(Zn1/2Ti1/2)O3 is considered to be a promising high-ferroelectric performance material in the Pb/Bi-based perovskite family. In the present study, a whole set of (1 − x)PbTiO3xBi(Zn1/2Ti1/2)O3 (0 ≤ x ≤ 1) solid solutions have been prepared by the conventional solid-state and high-pressure vs. high-temperature methods. The effect of Bi(Zn1/2Ti1/2)O3 on the crystal structure has been investigated by synchrotron X-ray powder diffraction. Unlike most PbTiO3-based perovskites, the present system exhibits a continuously enhanced tetragonality (c/a) and large spontaneous polarization (PS) properties. The enhanced c/a is ascribed to the large spontaneous polarization displacements induced by the strong Pb/Bi–O hybridization and coupling interactions between Ti/Zn and Pb/Bi cations, which can be evidenced from the lattice dynamics study and first-principles calculations. Accordingly, the TC (i.e., x = 0.5) is expected to be approximately 1000 °C if its perovskite structure can be stabilized. The present study provides a route to obtain large-PS in PbTiO3-based ferroelectric materials by introducing isostructural perovskites with strong polarity.

Graphical abstract: Large spontaneous polarization in polar perovskites of PbTiO3–Bi(Zn1/2Ti1/2)O3

Supplementary files

Article information

Article type
Research Article
Submitted
27 Gur 2018
Accepted
25 Bit 2018
First published
26 Bit 2018

Inorg. Chem. Front., 2018,5, 1277-1281

Large spontaneous polarization in polar perovskites of PbTiO3–Bi(Zn1/2Ti1/2)O3

Z. Pan, X. Jiang, J. Chen, L. Hu, H. Yamamoto, L. Zhang, L. Fan, X. Fan, Y. Li, G. Li, Y. Ren, Z. Lin, M. Azuma and X. Xing, Inorg. Chem. Front., 2018, 5, 1277 DOI: 10.1039/C8QI00184G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements