کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1650119 1007598 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Morphotropic phase boundary and piezoelectric properties of (Bi1/2Na1/2)1 − x(Bi1/2K1/2)xTiO3–0.03(Na0.5K0.5)NbO3 ferroelectric ceramics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Morphotropic phase boundary and piezoelectric properties of (Bi1/2Na1/2)1 − x(Bi1/2K1/2)xTiO3–0.03(Na0.5K0.5)NbO3 ferroelectric ceramics
چکیده انگلیسی

Lead-free piezoelectric ceramics, (Bi1/2Na1/2)1 − x(Bi1/2K1/2)xTiO3–0.03(Na0.5K0.5)NbO3 (x = 0.10–0.40) were synthesized by conventional solid-state sintering. A morphotropic phase boundary (MPB) between rhombohedral and tetragonal phases was confirmed. Two dielectric anomalies can be observed, showing diffused phase transition behavior. There is no shift of the dielectric maximum temperature with frequency due to the contribution of space charge at high temperatures, similar to pure (Bi1/2Na1/2)TiO3. The materials near MPB show a strong compositional dependence with the optimal properties of a d33 of 167 pC/N, a kp of 35.5%, a Pr of 27.6 μC/cm2 and a Ec of 27.9 kV/cm, suitable for future application.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 63, Issue 5, 28 February 2009, Pages 547–550
نویسندگان
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