کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1654454 1007695 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Low-temperature firing and microwave dielectric properties of Ca[(Li0.33Nb0.67)0.9Ti0.1]O3−δ ceramics with LiF addition
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Low-temperature firing and microwave dielectric properties of Ca[(Li0.33Nb0.67)0.9Ti0.1]O3−δ ceramics with LiF addition
چکیده انگلیسی

The effects of LiF addition on sinterability, microstructure and microwave dielectric properties of Ca[(Li0.33Nb0.67)0.9Ti0.1]O3−δ ceramics were investigated. The LiF addition lowered the sintering temperature of Ca[(Li0.33Nb0.67)0.9Ti0.1]O3−δ ceramics effectively from 1180 to 840 °C. It was found that the bulk density and dielectric constant (εr) greatly decreased, the quality factor (Q·f) gradually increased, the temperature coefficient of resonant frequency (τƒ) shifted to a negative value with the increase amount of LiF addition. The dielectric properties (εr,Q·f, τf) of Ca[(Li0.33Nb0.67)0.9Ti0.1]O3−δ ceramics with 10 wt.% LiF sintered at 900 °C were 24.8, 19,300 GHz (at 4.16 GHz), − 15.6 ppm/°C respectively. And those were 21.3, 20,450 GHz (at 4.59 GHz), − 18.0 ppm/°C respectively for the specimen with 20 wt.% LiF at 840 °C.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 59, Issue 26, November 2005, Pages 3252–3255
نویسندگان
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