Dielectric Characteristics of (Ca_0.2Sr_0.8)₃(Zr_xTi_1-x)₂O₇ Ceramics at Microwave Frequencies

Abstract:

(Ca_0.2Sr_0.8)₃(Zr_xTi_1-x)₂O₇ (x = 0.02-0.1) ceramic prepared by the solid state method was investigated for its microstructure and microwave dielectric properties. The correlation between the microstructure and microwave dielectric properties was also investigated. By increasing x from 0.01 to 0.06, the dielectric constant and Q×f value of the specimen could be increased from 72 to a maximum of 74, and from 11000 GHz to a maximum of 18000 GHz, respectively. The ε_r value of 74, the Q×f value of 18,000 GHz, and the τ_f value of 418 ppm/^oC were obtained for (Ca_0.2Sr_0.8)₃(Zr_0.06Ti_0.94)₂O₇ ceramics sintering at 1520^oC for 4h, and (Ca_0.2Sr_0.8)₃(Zr_xTi_1-x)₂O₇ (x = 0.02-0.1) is proposed as a suitable material candidate for application in microwave ceramic temperature sensing antenna.

• Periodical: Materials Science Forum (Volume 898)
• Pages: 392-398
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.898.392
• Online since: June 2017
• Authors: Wen Shiush Chen*, Hsin Han Tung, Cheng Hsing Hsu, Ching Fang Tseng, Chun Hung Lai, Yu Chuan Chen, Jenn Sen Lin
• Keywords: (Ca_0.2Sr_0.8)₃(Zr_xTi_1-x)₂O₇ Ceramics, Microstructure, Microwave Dielectric Properties, Sintering

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