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Influence of B-Site Disorder on the Properties of Unpoled Bi1/2Na1/2TiO3-0.06Ba(ZrxTi1-x)O3 Piezoceramics

Glaum, Julia and Zakhozheva, M. and Acosta, Matias and Aksel, Elena and Kleebe, Hans-Joachim and Hoffman, Mark and Schmitt, Ljubomira Ana (2016):
Influence of B-Site Disorder on the Properties of Unpoled Bi1/2Na1/2TiO3-0.06Ba(ZrxTi1-x)O3 Piezoceramics.
In: Journal of the American Ceramic Society, The American Ceramic Society, pp. 2801-2808, 8, (99), ISSN 00027820,
[Article]

Abstract

The influence of B-site disorder on the dielectric, microstructural, and structural characteristics of unpoled, lead-free (Bi1/2Na1/2)TiO3-0.06Ba(ZrxTi1-x)O3 piezoelectric ceramics with x = 0.02, 0.10, and 0.15 was investigated. The low and medium doping level introduced a stabilization of polar nanoregions reflected in the shift of the dispersive permittivity anomalies to higher temperatures and the development of lamellar rhombohedral domains embedded in the prevalent tetragonal nanodomain matrix. For higher Zr level, the regions of lamellar domains remain, but the dielectric characteristics indicate a reduction in the previous stabilization effect. This behavior is rationalized by a reduction in the correlation length due to the increasing amount of nonpolar sample volume with increasing Zr addition.

Item Type: Article
Erschienen: 2016
Creators: Glaum, Julia and Zakhozheva, M. and Acosta, Matias and Aksel, Elena and Kleebe, Hans-Joachim and Hoffman, Mark and Schmitt, Ljubomira Ana
Title: Influence of B-Site Disorder on the Properties of Unpoled Bi1/2Na1/2TiO3-0.06Ba(ZrxTi1-x)O3 Piezoceramics
Language: English
Abstract:

The influence of B-site disorder on the dielectric, microstructural, and structural characteristics of unpoled, lead-free (Bi1/2Na1/2)TiO3-0.06Ba(ZrxTi1-x)O3 piezoelectric ceramics with x = 0.02, 0.10, and 0.15 was investigated. The low and medium doping level introduced a stabilization of polar nanoregions reflected in the shift of the dispersive permittivity anomalies to higher temperatures and the development of lamellar rhombohedral domains embedded in the prevalent tetragonal nanodomain matrix. For higher Zr level, the regions of lamellar domains remain, but the dielectric characteristics indicate a reduction in the previous stabilization effect. This behavior is rationalized by a reduction in the correlation length due to the increasing amount of nonpolar sample volume with increasing Zr addition.

Journal or Publication Title: Journal of the American Ceramic Society
Volume: 8
Number: 99
Publisher: The American Ceramic Society
Uncontrolled Keywords: relaxors; core–shell structures; dielectric materials/ properties; domains; transmission electron microscopy
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Date Deposited: 15 Sep 2016 05:44
Identification Number: doi:10.1111/jace.14266
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