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Type: Artigo de periódico
Title: Dielectric investigations in unconventionally processed TbMnO3 ceramics
Author: Gotardo, RAM
Zabotto, FL
Garcia, D
Eiras, JA
Dias, GS
Cotica, LF
Santos, IA
Coelho, AA
Abstract: TbMnO3 ceramics with enhanced dielectric properties were synthesized by an innovative route combining high-energy ball milling and hot-forging sintering. Dielectric investigations reveal the presence of two distinct relaxation processes: one thermally activated mostly due to dipolar effects and other related to the movement of polar clusters or electric dipoles. Long-range polar order was not achieved, as ferroelectricity in TbMnO3 is strongly dependent on the crystallographic direction. A distribution of relaxation times indicates a cooperative response of the electric dipoles. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Subject: Multiferroic
Hot pressing
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Citation: Scripta Materialia. Pergamon-elsevier Science Ltd, v. 68, n. 5, n. 293, n. 296, 2013.
Rights: fechado
Identifier DOI: 10.1016/j.scriptamat.2012.10.045
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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