کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5459177 | 1516179 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of sintering atmosphere on microstructure and dielectric properties of (Yb + Nb) co-doped rutile TiO2 ceramics
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effects of sintering atmosphere on microstructure and dielectric properties of (Yb + Nb) co-doped rutile TiO2 ceramics Effects of sintering atmosphere on microstructure and dielectric properties of (Yb + Nb) co-doped rutile TiO2 ceramics](/preview/png/5459177.png)
چکیده انگلیسی
(Yb1/2Nb1/2)0.05Ti0.95O2 ceramics are fabricated by the solid state reaction method. The effects of oxygen partial pressure in the sintering atmosphere (10% â¤Â x â¤Â 100%) on crystal structures, microstructure and dielectric properties of (Yb1/2Nb1/2)0.05Ti0.95O2 are investigated. All samples have rutile structure, and average grain size rises from 5 μm to 28 μm with x increasing from 10% to 100%. All samples show colossal permittivity (above 104). The dielectric properties of x â¥Â 50% samples show well temperature (120 K-370 K) and frequency stability (100 Hz-100 kHz). The grain resistivity of x = 100% sample is three orders of magnitude higher than that of x = 10%. The breakdown voltage improves from 246 to 716 V/cm with increasing oxygen partial pressure. Both the Ti valence and oxygen concentration have been influenced by sintering atmosphere.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 715, 25 August 2017, Pages 170-175
Journal: Journal of Alloys and Compounds - Volume 715, 25 August 2017, Pages 170-175
نویسندگان
Xiao-gang Zhao, Peng Liu,