Abstract
Piezoelectric ceramics (Na0.5Bi0.5)0.92Ba0.08TiO3+x%MnCO3 (BNBT-Mn, x=0−1.6, mass fraction) were synthesized by conventional solid state reaction. The results show that when the addition of MnCO3 is 0 – 1.4%, BNBT-Mn ceramics exhibit a single-phase perovskite structure. With the increase of content of MnCO3, piezoelectric constant and electromechanical coupling factor increase rapidly when x is lower than 0.3. Then they both decrease when x is in the range of 0.3 and 1.6. When x=0.3, piezoelectric constant and electromechanical coupling factor reach the maximum value of 160 pC/N and 58.5% respectively, which can improve the temperature stability of BNBT-Mn.
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Foundation item: Project (50272020) supported by the National Natural Science Foundation of China; project (2002AB049) by the Natural Science Foundation of Hubei Province of China
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Zhou, Xy., Gu, Hs. & Li, Wy. Effect of doped Mn on piezoelectric properties of (Na0.5Bi0.5)0.92Ba0.08TiO3 lead-free ceramics. J Cent. South Univ. Technol. 12, 266–268 (2005). https://doi.org/10.1007/s11771-005-0141-7
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DOI: https://doi.org/10.1007/s11771-005-0141-7