Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23104
Title: Piezoelectric properties of Mn-doped (Na0.5Bi 0.5)0.92Ba0.08TiO3 ceramics
Authors: Zhou, XY
Gu, HS
Wang, Y 
Li, WY
Zhou, TS
Keywords: BNBT lead-free ceramics
Mn doping
Piezoelectric properties
Issue Date: 2005
Publisher: North-Holland
Source: Materials letters, 2005, v. 59, no. 13, p. 1649-1652 How to cite?
Journal: Materials letters 
Abstract: Piezoelectric ceramics (Na0.5Bi0.5) 0.92Ba0.08TiO3+x mol.% Mn (BNBT-Mn) with x ranging from 0 to 2.97 are synthesized by conventional solid state reaction. The sintered BNBT-Mn exhibited a single phase perovskite structure without detectable secondary phase from x=0 to x=2.6. With increasing amount of doped Mn, the Curie temperature (Tc) of BNBT-Mn decreased rapidly, piezoelectric constants d33 and kt increased promptly when x was lower than 0.56, taking the maximum value of 160×(10-12 C/N) and 58.5%, respectively for x=0.56, then decreased slightly with x ranging from 0.56 to 2.6, and finally decreased rapidly for x>2.6, whereas Q m showed a different trend from d33 and kt. Furthermore, kt had a relatively high value under the low poling field (Ep) for x=0.56 owing to the reduced coercive field (E c). Possible mechanisms of the influence of Mn doping on the microstructure and piezoelectric properties are discussed.
URI: http://hdl.handle.net/10397/23104
ISSN: 0167-577X
EISSN: 1873-4979
DOI: 10.1016/j.matlet.2005.01.034
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