Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
ISSN-L : 1348-6535
Feature: Cutting edge research on electroceramics 2016: Full papers
Enhanced polarization properties of ferroelectric (Bi1/2Na1/2)TiO3–Ba(Mg1/3Nb2/3)O3 single crystals grown under high-pressure oxygen atmosphere
Kohei MAKISUMIYuuki KITANAKAYuji NOGUCHIMasaru MIYAYAMA
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2017 Volume 125 Issue 6 Pages 463-467

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Abstract

Single crystals of (Bi1/2Na1/2)TiO3–Ba(Mg1/3Nb2/3)O3 [(1 − x)BNT–xBMN] with x = 4% were grown by the flux method (Po2 = 0.02 MPa) and the high-Po2 top-seeded solution growth method (Po2 = 0.9 MPa) and their crystal structures and properties are investigated along the pseudocubic [001] direction. The crystal grown at a higher Po2 of 0.9 MPa exhibits a well saturated polarization hysteresis, showing that the rhombohedral phase with x = 4% has a spontaneous polarization (Ps) of 48.5 µC/cm2 (Ps parallel to the pseudocubic [111] direction). The superior properties obtained for the crystal (Po2 = 0.9 MPa) are discussed in terms of domain clamping and depolarization associated with oxygen vacancies.

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© 2017 The Ceramic Society of Japan
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