کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10624114 989583 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enhanced dielectric loss of Mg doped Ba0.7Sr0.3TiO3 ceramics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Enhanced dielectric loss of Mg doped Ba0.7Sr0.3TiO3 ceramics
چکیده انگلیسی
The effect of MgO doping on the structural, microstructural and dielectric properties of Ba0.7Sr0.3TiO3 (BST) ceramic from the point of view of its application in microwave tunable devices has been studied. All the samples crystallize into perovskite structure. There is significant reduction in the value of loss factor with the increase in Mg-level, the dielectric constant and tunability are also reduced with the increase in Mg-level. Interestingly, the Fig. of merit of the material is found to be enhanced with increase of Mg-doping. The observed dielectric properties are explained on the basis of defect chemistry involved when Mg is doped in Ba0.7Sr0.3TiO3 ceramics. The effect of dc field on the dielectric constant and the dielectric breakdown strength of the paraelectric phase Mg doped BST ceramic samples are also studied.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 13, October 2016, Pages 14970-14975
نویسندگان
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