Affiliation:
1. Tokyo University of Science
Abstract
The phase transition temperatures of divalent and trivalent ions substituted (Bi1/2Na1/2)TiO3
ceramics were investigated in detail by electrical measurement. BNT ceramics substituted by
divalent (Ca2+, Sr2+ and Ba2+) and trivalent (La3+, Nd3+, Ho3+ and Yb3+) ions were prepared by
conventional ceramic fabrication process. For these ceramics, the depolarization temperature, Td,
the rhombohedral-tetragonal phase transition temperature, TR-T, and the temperature of the
maximum dielectric constant, Tm, were determined on the basis of the temperature dependences of
dielectric and piezoelectric properties. In this study, we demonstrated the relationship between
phase transition temperature and ionic radius of ions substituted in the A-site of BNT ceramics.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Cited by
83 articles.
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