کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1478963 | 991241 | 2005 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Lanthanum titanate ceramics: Electrical characterizations in large temperature and frequency ranges
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Ceramics of the La2O3–TiO2 system have very good dielectric properties, which make La2Ti2O7 a good candidate for microwave applications. Using radio-frequency magnetron sputtering, we have deposited LaTiOxNy oxynitride thin films on (0 0 1) strontium titanate and glass substrates, starting from a homemade oxide target. The microwave dielectric properties of La2Ti2O7 ceramic have been investigated in the 100 Hz to 10 GHz range in order to have a reference for further studies. The evolution of ɛ′ and ɛ″ shows a space charge domain with a critical frequency Fc = 1 GHz. Measurements in the temperature range from 20 to 880 °C have been carried out to study phase transitions and conduction mechanisms.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 25, Issue 12, 2005, Pages 2085–2088
Journal: Journal of the European Ceramic Society - Volume 25, Issue 12, 2005, Pages 2085–2088
نویسندگان
D. Fasquelle, J.C. Carru, L. Le Gendre, C. Le Paven, J. Pinel, F. Cheviré, F. Tessier, R. Marchand,