Ferroelectric Phase Transitions of Modified [(Na0.5Bi0.5)1 – xLax]TiO3 (x = 0–0.1) Sodium Bismuth Titanate-Based Ceramics.

Politova, ED and Strebkov, DA and Mosunov, AV and Golubko, NV and Kaleva, GM and Stefanovich, SY and Loginov, AB and Loginov, BA and Panda, PK (2020) Ferroelectric Phase Transitions of Modified [(Na0.5Bi0.5)1 – xLax]TiO3 (x = 0–0.1) Sodium Bismuth Titanate-Based Ceramics. Inorganic Materials, 56 (1). pp. 91-96. ISSN 00201685

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Abstract

We have studied the effect of A-site cation substitutions in sodium bismuth titanate on the structural parameters, microstructure, and dielectric and ferroelectric properties of [(Na0.5Bi0.5)1 – xAx]TiO3 (A =La3+, x = 0–0.1) ceramics, including those modified with KCl additions. The samples have been shown to undergo phase transitions, which show up as anomalies in dielectric permittivity near ~400 K and peaks at ~600 K. The phase transitions near 400 K exhibit well-defined relaxor behavior, indicative of the presence of polar regions in a nonpolar matrix, as supported by laser second harmonic generation measurements.

Item Type:	Article
Uncontrolled Keywords:	Perovskite structure, Sodium bismuth titanate, Dielectric, Relaxor
Subjects:	CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User:	Mrs. Usha Kumari
Date Deposited:	09 Nov 2021 09:16
Last Modified:	09 Nov 2021 09:16
URI:	http://nal-ir.nal.res.in/id/eprint/13485

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