Microwave Dielectric Properties and Infrared ReflectivitySpectra of (Zr<TEX>$_{0.8}$</TEX>Sn<TEX>$_{0.2}$</TEX>)TiO<TEX>$_4$</TEX> Ceramics

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J. Korean Ceram. Soc. > Volume 36(9); 1999 > Article

Journal of the Korean Ceramic Society 1999;36(9): 915.

(Zr$_{0.8}$Sn$_{0.2}$)TiO$_4$ 세라믹스의 마이크로파 유전특성 및 Infrared Reflectivity Spectra of (Zr0.8Sn0.2)TiO4

윤기현, 안일석, 김우섭, 김응수¹

연세대학교 세라믹공학과
¹경기대학교 재료공학과

Microwave Dielectric Properties and Infrared ReflectivitySpectra of (Zr$_{0.8}$Sn$_{0.2}$)TiO$_4$ Ceramics

ABSTRACT

Microwave dielectric properties and far infrared reflectivity spectra of the (Zr0.8Sn0.2)TiO4 ceramics were inves-tigated with the various cooling rate. Dielectric constant was nearly same value while the unloaded Q value was largely affected by cooling rate. The Q.f of 42,140 at 7 GHz was obtained for the specimens with cooling rate of 1$^{circ}C$/min. The effect of the cooling rate on the change of the ionic the electronic polarization and the intrinsic microwave loss of the specimens were investigated by the infrared reflectivity spectra from 50 to 4000cm-1 which were calculated by Kramers-Kroning analysis and the classical oscillator model. The relative tendency of microwave dielectric properties of the specimens calculated from the relfectivity data were in good agreement with the results by the post resonant method.

Key words: (Zr$_{0.8}$Sn$_{0.2}$)TiO$_4$, Dielectric constant, Dielectric loss, Infrared reflectivity spectra, Dispersion constant, Dielectric loss, Infrared reflectivity spectra