کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1613170 1516313 2013 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Impedance spectroscopy studies of 0.7Bi(Fe1−xGax)O3-0.3PbTiO3 high temperature piezoelectric ceramics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Impedance spectroscopy studies of 0.7Bi(Fe1−xGax)O3-0.3PbTiO3 high temperature piezoelectric ceramics
چکیده انگلیسی
Crystalline solutions of 0.7Bi(Fe1−xGax)O3-0.3PbTiO3 (BGF-PT) of x = 0, 0.05 and 0.1 were fabricated by solid-state reaction method. X-ray diffraction results indicated that BGF-PT ceramics showed single perovskite structure, and Ga was incorporated into the BGF-PT system. Impedance spectroscopy studies revealed that there were two types of relaxation processes indicating two electro active regions (grain and grain boundary) in BGF-PT of x = 0 over the frequency and temperature range studied, whereas there was only one (grain) for BGF-PT of x = 0.05 and 0.1. Further investigation reflected that the high temperature resistivity of BGF-PT had been improved significantly by Ga modification, which was probably owing to enhanced grain resistivity by reduced defect concentration in the solid solutions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 580, 15 December 2013, Pages 67-71
نویسندگان
, , ,