کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1618181 | 1005701 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterization and dielectric behavior of B2O3-doped 0.9Mg0.95Co0.05TiO3-0.1Ca0.6La0.8/3TiO3 ceramic system at microwave frequency
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The microwave dielectric properties and the microstructures of (1 â x)Mg0.95Co0.05TiO3-xCa0.6La0.8/3TiO3 ceramic system, prepared by a mixed oxide route, have been investigated. The sintered 0.9Mg0.95Co0.05TiO3-0.1Ca0.6La0.8/3TiO3 ceramics with B2O3 addition were characterized using X-ray diffraction spectra and scanning electron microscopy (SEM). The microwave dielectric properties are found to strongly correlate with the sintering temperature as well as the amount of B2O3 addition. The Q Ã f value of 0.9Mg0.95Co0.05TiO3-0.1Ca0.6La0.8/3TiO3 ceramic increased with increasing temperature to 1225 °C/4 h and decreased thereafter. The decrease in Q Ã f value was coincident with the abnormal grain growth. A maximum Q Ã f value of 76,000 GHz associated with an dielectric constant (Ér) of 22.67 and a temperature coefficient (Ïf) of â12 ppm/°C, was achieved for samples with 0.5 wt.% B2O3 additions sintering at 1225 °C/4 h. By appropriately adjusting the x value in the (1 â x)Mg0.95Co0.05TiO3-xCa0.6La0.8/3TiO3 ceramic system, zero Ïf value can be obtained. A parallel-coupled line band-pass filter is designed and simulated using the proposed dielectric to study its performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 504, Issue 1, 13 August 2010, Pages 228-232
Journal: Journal of Alloys and Compounds - Volume 504, Issue 1, 13 August 2010, Pages 228-232
نویسندگان
Chun-Hsu Shen, Cheng-Liang Huang, Ling-Mei Lin, Chung-Long Pan,