کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5441821 1510680 2017 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effects of MnO2 addition on the structure and dielectric properties of the strontium barium niobate glass-ceramics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
The effects of MnO2 addition on the structure and dielectric properties of the strontium barium niobate glass-ceramics
چکیده انگلیسی
The effects of MnO2 content on the structure and dielectric properties of the SBN-glass-ceramics were studied. The results show that a small amount of MnO2 doping of the SBN-glass-ceramics can make their microstructure become denser and more uniform and MnO2 doping of the SBN-glass-ceramics, as a grain growth inhibitor, has an evident effect on the reduction of grain sizes. The Mn ions exist in the form of Mn3+ and Mn4+ ions in the SBN-glass-ceramics, as confirmed by XPS measurements and Mn3+ and Mn4+ ions easily form charge defect complexes, which causes the leakage current densities of the SBN-glass-ceramics to obviously decrease. And a small amount of MnO2 doping of the SBN-glass-ceramics can effectively decrease the dielectric loss of the materials. When 0.05 mol% MnO2 is added to the SBN-glass-ceramics, the BDS is up to 1470.6 kV/cm and the theoretical energy storage density reaches the maximum value of 9.2 J/cm3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 95, November 2017, Pages 349-353
نویسندگان
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