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河北工业大学
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Revealing the role of heat treatment in enhancement of electrical properties of lead-free piezoelectric ceramics.

Title: Revealing the role of heat treatment in enhancement of electrical properties of lead-free piezoelectric ceramics.
Authors: Sangwook Kim1
Khanal, Gopal Prasad1
Shintaro Ueno1
Chikako Moriyoshi2
Yoshihiro Kuroiwa2
Satoshi Wada1 swada@yamanashi.ac.jp
Source: Journal of Applied Physics. 2017, Vol. 122 Issue 1, p1-7. 7p. 1 Illustration, 5 Graphs.
Document Type: Article
Subject Terms: HEAT treatment
ELECTRIC properties
CERAMICS
CRYSTAL structure
FERROELECTRICITY
PIEZOELECTRICITY
NAICS/Industry Codes: 327110 Pottery, Ceramics, and Plumbing Fixture Manufacturing ; 332811 Metal Heat Treating
Abstract: The structural and electrical properties of the virgin, annealed, and quenched samples of 0.80BiFeO3--0.20BaTiO3 lead-free ceramics were investigated. The crystal structures investigated with the structure refinement method exhibited a rhombohedral structure for all the samples. The significant enhancement of ferroelectric and piezoelectric properties is ascribed to the relaxation of the lattice strain induced in the samples after the heat treatment. The bond-length calculated from the final structure refinement results revealed the increment of the A-O bond-length after the heat treatment, while the B-O bond-length was maintained in all the virgin, annealed, and quenched samples suggesting the specific influence of the lattice strain at the A-site of the material system. [ABSTRACT FROM AUTHOR]
(Copyright applies to all Abstracts.)
Author Affiliations: 1Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Kofu 400-8510, Japan ; 2Department of Physical Science, Hiroshima University, Higashihiroshima, Hiroshima 739-8526, Japan
ISSN: 0021-8979 (Sherpa/RoMEO, JCR)
PageCount: 1-8
volume: 122
issue: 1
issn: 00218979
pubdate: 2017
DOI: https://doi.org/10.1063/1.4991492
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