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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.121  No.1416 (August) (2013)  >  pp.589-592

Journal of the Ceramic Society of Japan
<<Previous article Vol.121  No.1416 (August) (2013)   pp.589 - 592 Next article>>

Effect of sintering condition and V-doping on the piezoelectric properties of BaTiO3–Bi(Mg1/2Ti1/2)O3–BiFeO3 ceramics

Ichiro FUJII1), Ryuta MITSUI1), Kouichi NAKASHIMA1), Nobuhiro KUMADA1), Hisato YABUTA2), Mikio SHIMADA2), Takayuki WATANABE2), Kaoru MIURA2), Satoshi WADA1)
1) Interdisciplinary Graduate School of Medical and Engineering, University of Yamanashi 2) Corporate R&D Headquarters, CANON Inc.

0.3BaTiO3–0.1Bi(Mg1/2Ti1/2)O3–0.6BiFeO3 ceramics were either doped with vanadium or sintered in calcined powder with the same composition. Compared to an undoped ceramic sintered without the calcined powder, both ceramics showed reduced leakage current densities (lower than 1 × 10−7 A/cm2) and absence of dielectric relaxation behaviors observed in frequency- and temperature-dependent dielectric measurements. The Curie temperatures of both samples were higher than 460°C. The maximum field-induced strain over the applied field, Smax/Emax, of 366 pm/V for the undoped ceramic sintered without the calcined powder increased to 455 and 799 pm/V for the V-doped sample and the sample sintered with the calcined powder, respectively. The increase was discussed with reduced concentrations of bismuth vacancy–oxygen vacancy defect dipoles.


Keyword:
Barium titanate, Bismuth magnesium titanate, Bismuth ferrite, Ferroelectric, Piezoelectric

Received: March 15, 2013
Accepted: April 22, 2013 , Published online: August 01, 2013
Copyright © 2013 The Ceramic Society of Japan

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