کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1491183 992345 2009 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structure and ferroelectric properties in (K0.5Bi0.5)TiO3–BiScO3–PbTiO3 piezoelectric ceramic system
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Structure and ferroelectric properties in (K0.5Bi0.5)TiO3–BiScO3–PbTiO3 piezoelectric ceramic system
چکیده انگلیسی

(K0.5Bi0.5)TiO3–BiScO3–PbTiO3 ceramics were synthesized by conventional solid-state method. A morphotropic phase boundary (MPB) was confirmed with the aid of structural analysis. Two dielectric anomalous peaks were observed, the one around dielectric maximum temperature (Tm) due to phase transformation from ferroelectric to paraelectric while the second one could be ascribed to space charges. Furthermore, the existence of space charges also resulted in the independence of Tm with frequency at low lead composition. A new high temperature piezoelectric ceramic, 0.30(K0.5Bi0.5)TiO3–0.30BiScO3–0.40PbTiO3 close to MPB exhibited excellent electrical properties with Tm of 384 °C, d33 of 247 pC/N, kp of 38.9%, Pr of 19.41 μC/cm2, and Ec of 2.25 kV/mm, indicative of a candidate for high temperature application.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 44, Issue 7, 1 July 2009, Pages 1511–1514
نویسندگان
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