کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10666480 1007721 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Piezoelectric properties of Mn-doped (Na0.5Bi0.5)0.92Ba0.08TiO3 ceramics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Piezoelectric properties of Mn-doped (Na0.5Bi0.5)0.92Ba0.08TiO3 ceramics
چکیده انگلیسی
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 Qm 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 (Ec). Possible mechanisms of the influence of Mn doping on the microstructure and piezoelectric properties are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 59, Issue 13, June 2005, Pages 1649-1652
نویسندگان
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