کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10624132 | 989583 | 2016 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Intrinsic factors affecting the microwave dielectric properties of Mg2Ti1âx(Mg1/3Sb2/3)xO4 ceramics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Intrinsic factors affecting the microwave dielectric properties of Mg2Ti1âx(Mg1/3Sb2/3)xO4 ceramics Intrinsic factors affecting the microwave dielectric properties of Mg2Ti1âx(Mg1/3Sb2/3)xO4 ceramics](/preview/png/10624132.png)
چکیده انگلیسی
The effect of crystal structure on the microwave dielectric properties of Mg2Ti1âx(Mg1/3Sb2/3)xO4 (0.025â¤xâ¤0.15) ceramics was investigated. A single phase having a cubic inverse spinel structure formed over the entire range of compositions, in specimens sintered at 1450 °C for 4 h. The structural characteristics of these ceramics were quantitatively evaluated by applying the Rietveld refinement method to the X-ray diffraction data. The largest bond strength between the cation and the oxygen ion and hence the highest quality factor (Qf) of the specimens were obtained at x=0.05. Although the ionic polarizability (3.29 Ã
3) of (Mg1/3Sb2/3)4+ was larger than that (2.93Â Ã
3) of Ti4+, the dielectric constant (K) of the specimens decreased owing to the decrease of rattling effect with increasing x. In addition, the temperature coefficient of resonant frequency (TCF) decreased with decreasing K values. Typically, a high Qf value of 229,000Â GHz was obtained for the specimens with x=0.05.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 13, October 2016, Pages 15035-15040
Journal: Ceramics International - Volume 42, Issue 13, October 2016, Pages 15035-15040
نویسندگان
Sung Ho Kim, Eung Soo Kim,