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Re-entrant relaxor behavior in BaTiO<inf>3</inf>-Bi(Zn<inf>2/3</inf>Nb<inf>1/3</inf>)O<inf>3</inf> ceramics

Wu, L and Wang, X and Shen, Z and Luo, B and Li, L (2017) Re-entrant relaxor behavior in BaTiO<inf>3</inf>-Bi(Zn<inf>2/3</inf>Nb<inf>1/3</inf>)O<inf>3</inf> ceramics. Journal of the American Ceramic Society, 100. pp. 511-514. ISSN 0002-7820

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Abstract

The (1−x)BaTiO −xBi(Zn Nb )O (x=0.10-0.25) ceramics were fabricated via solid-state reactions. Temperature-dependent polarization measurement reveals that with the temperature lowering, the remnant polarization increases till a maximum value before it decreases, showing a reentrant phenomenon. Absence of apparent switching current peaks in the current density as a function of electric field should indicate the lack of a ferroelectric transition, which is further verified by the consistent macroscopic phase structure from the Raman spectra. An anomalous peak in the full width at half maximum of a deconvoluted mode at ~515 cm suggests the entering of a more disordered state of dipolar dynamics, which may be originated from the competition between the freezing of polar nanoregions and the random interacting fields. 3 2/3 1/3 3 −1

Item Type: Article
Subjects: UNSPECIFIED
Divisions: UNSPECIFIED
Depositing User: Cron Job
Date Deposited: 26 Feb 2021 23:45
Last Modified: 10 Apr 2021 22:51
DOI: 10.1111/jace.14618