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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >New high-epsilon and high-Q microwave dielectric ceramics: (1-x)Ca_(0.61)Nd_(0.26)TiO_3-xNd(Zn_(0.5)Ti_(0.5))O_3
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New high-epsilon and high-Q microwave dielectric ceramics: (1-x)Ca_(0.61)Nd_(0.26)TiO_3-xNd(Zn_(0.5)Ti_(0.5))O_3

机译：新型高ε和高Q微波介电陶瓷：（1-x）Ca_（0.61）Nd_（0.26）TiO_3-xNd（Zn_（0.5）Ti_（0.5））O_3

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摘要

New high-e and high-Q microwave dielectric ceramics (1-x)Ca_(0.61)Nd_(0.26)TiO_3-xNd(Zn_(0.5)Ti_(0.5))O_3 (x = 0.00-0.40, referred to as (1-x)CNT-xNZT) were prepared by conventional solid-state preparation route. Single orthorhombic perovskite phase was formed when x was not beyond 0.15. And a secondary phase Zn_2TiO_4 appeared for x = 0.20, while ZnO was the secondary phase for the ceramics with x above 0.20. The dielectric constant and temperature coefficient of resonant frequency decreased steadily with increasing x-value. High Qf-value of above 10,000 GHz was achieved as x varied from 0.00 to 0.20. However, Qf-value decreased rapidly when x was beyond 0.20. Some (1-x)CNT-xNZT ceramics with high s and high Qf value were obtained: g = 78.8, Qf= 19,200 GHz, tau_f = + 135 ppm/deg C for x = 0.15; epsilon = 71.8, Qf= 17,300 GHz, tau_f = + 94 ppm/deg C for x = 0.20.
机译：新型高e和高Q微波介电陶瓷（1-x）Ca_（0.61）Nd_（0.26）TiO_3-xNd（Zn_（0.5）Ti_（0.5））O_3（x = 0.00-0.40，称为（1 -x）CNT-xNZT）通过常规的固态制备路线制备。当x不超过0.15时，形成单斜方钙钛矿相。当x = 0.20时，出现了第二相Zn_2TiO_4，而当x大于0.20时，ZnO是陶瓷的第二相。谐振频率的介电常数和温度系数随着x值的增加而稳定下降。当x从0.00变为0.20时，可实现10,000 GHz以上的高Qf值。但是，当x超过0.20时，Qf值迅速下降。获得了一些具有高s和高Qf值的（1-x）CNT-xNZT陶瓷：g = 78.8，Qf = 19,200 GHz，对于x = 0.15，tau_f = + 135 ppm /℃;对于x = 0.20，ε= 71.8，Qf = 17,300 GHz，tau_f = + 94 ppm /摄氏度。

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