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首页> 外文期刊>Journal of Materials Science. Materials in Electronics >Synthesis and microwave properties of substituted Ba_(2)Ti_(9)O_(20)
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Synthesis and microwave properties of substituted Ba_(2)Ti_(9)O_(20)

机译：取代Ba_（2）Ti_（9）O_（20）的合成及微波性质

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摘要

Microwave ceramic materials with a composition of Ba_(2-x)(Li_(0.5)La_(0.5))_(x)Ti_(9)O_(20) + 0.4 wt(percent) B_(2)O_(3) Ba_(2)Ti_(9-x)(La_(0.5)Ta_(0.5))_(x)O_(20) + 0.4 wt(percent) B_(2)O_(3) were synthesized and the optimum conditions for obtaining them were determined. The most important microwave properties were studied: permittivity ((epsilon)_(r)), quality factor Q X f and temperature coefficient of the resonance frequency ((tau)_(f)) at a frequency of 7-10 GHz. It was established that the partial substitutions of Ba~(2+)c (Li_(0.5)La_(0.5))~(2+) and Ti~(4+) c (La_(0.5)Ta_(0.5))~(4+) does not change (epsilon)_(r) and (tau)_(f) but result in the Q X f improvement to 50,000-60,000 GHz where x velence 0.05, with the maximum calcinations temperatures respectively, while in the case of unsubstituted Ba_(2)Ti_(9)O_(20) Q X f reaches 30,000-32,000 GHz.
机译：组成为Ba_（2-x）（Li_（0.5）La_（0.5））_（x）Ti_（9）O_（20）+ 0.4 wt（％）B_（2）O_（3）Ba_的微波陶瓷材料合成了（2）Ti_（9-x）（La_（0.5）Ta_（0.5））_（x）O_（20）+ 0.4 wt％的B_（2）O_（3）并获得了它们的最佳条件被确定。研究了最重要的微波特性：介电常数（ε_（r）），品质因数Q X f和在7-10 GHz频率下谐振频率的温度系数（τ_（f））。建立了Ba〜（2+）c（Li_（0.5）La_（0.5））〜（2+）和Ti〜（4+）c（La_（0.5）Ta_（0.5））〜（ 4+）不会改变ε_（r）和τ_（f），但会导致QX f改善到50,000-60,000 GHz，其中x速度0.05，最大煅烧温度，而在未取代的Ba_（2）Ti_（9）O_（20）QX f达到30,000-32,000 GHz。

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  • 作者

    V. Parvanova; I. Iliev;

  • 作者单位

    Department of Inorganic Chemistry, University of Chemical Technology, 8 Kliment Ohridski blvd., 1756 Sofia, Bulgaria;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;
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