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ID 30782
file
creator
Wada, Satoshi
Shimizu, Shigehito
Pulpan, Petr
Kumada, Nobuhiro
Tanaka, Daisuke
Furukawa, Masahito
subject
Barium titanate
Potassium niobate
Interface region
Piezoelectric property
Interface engineering
abstract
Barium titanate (BaTiO3, BT) potassium niobate (KNbO3, KN) solid solution system (05BT-0.5KN) ceramics with various microstructures were prepared by two-step sintering method, and their piezoelectric properties were investigated. For 0.5BT-0.5KN ceramics, two phases, ferroelectric tetragonal and ferroelectric orthorhombic, coexisted in different grains at room temperature, owing to the limited solid solution system. The volume fraction of interface region between BT-rich tetragonal and KN-rich orthorhombic grains was controlled by sintering temperatures, and increased with decreasing sintering temperatures. Apparent piezoelectric constant d(33)* was measured using slope of strain vs. electric field curves. As the results, the d(33)* increased with decreasing sintering temperatures, which revealed that interface region between tetragonal and orthorhombic grains could contribute to enhancement of piezoelectric properties.
journal title
Journal of the Ceramic Society of Japan
volume
Volume 118
issue
Issue 1380
start page
691
end page
695
date of issued
2010-08-01
publisher
日本セラミックス協会
issn
1882-0743
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2010 The Ceramic Society of Japan
relation url
department
Graduate School of Science