自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 12    No. 3    June 2005

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Effect of doped Mn on piezoelectric properties of
(Na0.5Bi0.5)0.92Ba0.08TiO3 lead-free ceramics
ZHOU Xiao-yuan(周小元), GU Hao-shuang(顾豪爽), LI Wei-yong(李位勇)

Faculty of Physics and Electronic Technology, Hubei University, Wuhan, 430062, China

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 whenxis lower than 0.3. Then they both decrease whenxis in the range of 0.3 and 1.6. Whenx=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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中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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