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
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
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 0.05Â mol% MnO2 is added to the SBN-glass-ceramics, the BDS is up to 1470.6Â kV/cm and the theoretical energy storage density reaches the maximum value of 9.2Â J/cm3.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Research Bulletin - Volume 95, November 2017, Pages 349-353
Journal: Materials Research Bulletin - Volume 95, November 2017, Pages 349-353
نویسندگان
Shaomei Xiu, Bo Shen, Jiwei Zhai,