Structure and microwave dielectric properties of Ba_3Ti_(4-x)(Fe_(1/2)Nb_(1/2))_xNb_4O_(21) solid solutions

Dong Zou; Qi-Long Zhang; Hui Yang

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Structure and microwave dielectric properties of Ba_3Ti_(4-x)(Fe_(1/2)Nb_(1/2))_xNb_4O_(21) solid solutions

机译：Ba_3Ti_（4-x）（Fe_（1/2）Nb_（1/2））_ xNb_4O_（21）固溶体的结构和微波介电性能

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Ba_3Ti_(4-x)(Fe_(1/2)Nb_(1/2))_xNb_4O_(21) (0 ≤ x ≤ 4)rnceramics with the substitution of (Fe_(1/2)Nb_(1/2)) for Ti were investigated. The modified Ba_3Ti_4Nb_4O_(21) dielectric ceramics prepared via the solid state reaction route exhibited single hexagonal structure. The dielectric constant and the quality factor of Ba_3Ti_(4-x)(Fe_(1/2)Nb_(1/2))_xNb_4O_(21) (0 ≤ x ≤ 4) ceramics decreased with an increase of x. Improved temperature coefficient of the resonant frequency of samples was obtained by the substitution of (Fe_(1/2)Nb_(1/2)) for Ti. Optimal microwave dielectric properties of ε_r = 50, Q × f = 5200 GHz, and τ_f = 10 ppm/℃ in Ba_3Ti_2(Fe_(1/2)Nb_(1/2))_2Nb_4O_(21) were obtained, which indicated its potential for microwave application.

机译：Ba_3Ti_（4-x）（Fe_（1/2）Nb_（1/2））_ xNb_4O_（21）（0≤x≤4）陶瓷（Fe_（1/2）Nb_（1/2））的替代对钛进行了研究。通过固态反应路线制备的改性Ba_3Ti_4Nb_4O_（21）介电陶瓷表现出单一的六边形结构。 Ba_3Ti_（4-x）（Fe_（1/2）Nb_（1/2））_ xNb_4O_（21）（0≤x≤4）陶瓷的介电常数和品质因数随x的增加而降低。通过用（Fe_（1/2）Nb_（1/2））代替Ti，可以提高样品共振频率的温度系数。在Ba_3Ti_2（Fe_（1/2）Nb_（1/2））_ 2Nb_4O_（21）中获得最佳微波介电特性ε_r= 50，Q×f = 5200 GHz，τ_f= 10 ppm /℃用于微波应用。

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来源
《Journal of materials science》 |2009年第8期|756-760|共5页
作者
Dong Zou; Qi-Long Zhang; Hui Yang;
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作者单位

College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China;

College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China;

College of Materials Science and Chemical Engineering, Zhejiang University, Hangzhou 310027, China;

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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
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Structure and microwave dielectric properties of Ba_3Ti_(4-x)(Fe_(1/2)Nb_(1/2))_xNb_4O_(21) solid solutions

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