Far Infrared Reflection Spectra of Ba(ZnTa)O3–BaZrO3 Dielectric Resonator Material

Abstract

Ba(Zn1/3Ta2/3)O3–BaZrO3 dielectric ceramic material has a extremely low dielectric loss at microwave frequencies. In order to investigate the lattice vibrations of the system Ba(Zn, Ta)O3–BaZrO3, far infrared reflection spectra were measured from 50 to 4000 cm-1 at room and low temperature using a Fourier transform infrared spectrometer. These data have been analyzed by the classical dispersion theory. The damping constant of these materials are discussed. The dielectric characteristics at microwave frequency calculated from the dispersion parameters are in preferable agreement with the measured values.