Preprints of Annual Meeting of The Ceramic Society of Japan
Preprints of Fall Meeting of The Ceramic Society of Japan
Annual Meeting of The Ceramic Society of Japan, 2009
Session ID : 3A07
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Ferroelectric/piezoelectric properties of novel (Bi1/2Na1/2)TiO3-based ferroelectric materials
*Yumiko OshimaYuji NoguchiMasaru Miyayama
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Abstract
We have investigated the ferroelectric and piezoelectric properties of novel (Bi1/2Na1/2)TiO3-based solid-solution ceramics. Ba(Mg1/3Nb2/3)O3, which is expected to show a high dielectric performance due to structural and charge inhomogeneities originating from B-site randomness, is selected as the end member for the solid solutions with BNT. The dielectric/polarization/piezoelectric properties of (1-x)(Bi1/2Na1/2)TiO3-xBa(Mg1/3Nb2/3)O3 (BNT-BMN) ceramics were investigated. At x>0.03, BNT-BMN showed dielectric dispersions typically observed in relaxor ferroelectrics. A clear piezoelectric butterfly loop was obtained with a strain maximum/electric-field maximum (Smax/Emax) of 210 pm/V, which was much larger than the that of BNT. These results suggest that BMN acts as a promising end member of the solid solution with BNT.
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© The Ceramic Society of Japan 2009
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