کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7887311 1509788 2018 19 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structural, dielectric and electrical characteristics of BiFeO3-NaNbO3 solid solutions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Structural, dielectric and electrical characteristics of BiFeO3-NaNbO3 solid solutions
چکیده انگلیسی
The paper mainly reports the effect of NaNbO3 (as a doping material) on the structural (crystal data and microstructure), dielectric (permittivity, dissipation of energy) and electrical (impedance, modulus, and conductivity) characteristics of BiFeO3 forming a solid solution of Bi.8Na.2Fe.8Nb.2O3. By analysis of the room temperature X-ray diffraction data, the formation of pure-phase material and its crystal data were obtained. The comprehensive studies of dielectric parameters (relative dielectric constant (εr), and tangent loss (tan δ) were measured in a wide range of temperature (25-450 °C) and frequency (1 kHz-1 MHz). The surface morphology, obtained with a gold-coated pellet sample, exhibits the high density of the sample. The frequency-temperature dependence of conductivity follows the Jonscher's Universal Power law. The electrical behavior of the compound has been studied using complex impedance and modulus data. The effect of grain and grain boundary on the capacitive and resistive properties of the material has been studied from complex impedance spectroscopy.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 10, July 2018, Pages 11792-11797
نویسندگان
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