Structure, piezoelectric, and ferroelectric properties of BaZrO 3 substituted Bi(Mg 1/2Ti 1/2)O 3-PbTiO 3 perovskite

Fan, Longlong and Chen, Jun and Kang, Huajun and Liu, Laijun and Fang, Liang and Deng, Jinxia and Yu, Ranbo and Xing, Xianran (2012) Structure, piezoelectric, and ferroelectric properties of BaZrO 3 substituted Bi(Mg 1/2Ti 1/2)O 3-PbTiO 3 perovskite. Journal of Applied Physics, 111 (10). pp. 104118-1. ISSN 0021-8979

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Abstract

The structure and electric properties of (0.9-x)Bi(Mg1/2 Ti 1/2)O3-xPbTiO3-0.1BaZrO3(0.45 ≤x ≤0.53) ceramics were investigated. The morphotropic phase boundary between tetragonal ferroelectric and pseudo-cubic relaxor phases is ascertained at x=0.50. The BaZrO3 substitution can much reduce the coercive field of Bi(Mg1/2 Ti1/2)O3-PbTiO3. The studies on temperature dependence of both ferroelectric and dielectric constant indicate a direct evidence for the antiferroelectric relaxor phase, which was ever suggested in the binary system of Bi(Mg1/2 Ti1/2)O3-PbTiO3. The phase transition of ferroelectric to antiferroelectric relaxor produces the thermal depoling below the Curie temperature. The ceramic of BMT-0.47PT-0.1BZ exhibits a high strain 0.37% and a large-signal d33 (530 pm/V) in the antiferroelectric-relaxor phase. BaZrO3 substituted Bi(Mg1/2 Ti1/2)O3-PbTiO3 shows an analogous phase diagram to that of lead-free (Bi, Na)TiO 3-BaTiO 3.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Access to Published version allowed due to publisher copyright policy.
Faculty / Department / School: No Faculty
Date Deposited: 17 Oct 2017 01:37
Last Modified: 18 Oct 2017 02:07
Uncontrolled Keywords: anti ferroelectrics; batio; binary systems; coercive field; depoling; ferroelectric property; High strains; large-signals; lead-free; morphotropic phase boundaries; relaxor phasis; relaxors; temperature dependence; TiO; ceramics; organic compounds; dielectric materials; electricity; alkali metals; metallurgy and metallography;
Fields of Research : 03 Chemical Sciences > 0306 Physical Chemistry (incl. Structural) > 030606 Structural Chemistry and Spectroscopy
02 Physical Sciences > 0299 Other Physical Sciences > 029999 Physical Sciences not elsewhere classified
09 Engineering > 0904 Chemical Engineering > 090499 Chemical Engineering not elsewhere classified
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970103 Expanding Knowledge in the Chemical Sciences
Identification Number or DOI: 10.1063/1.4722286
URI: http://eprints.usq.edu.au/id/eprint/31984

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