Paraelectric, piezoelectric and pyroelectric crystals: I. Dielectric properties

作者：G J Coombs, Roger Arthur Cowley · 发表于：Journal of Physics C Solid State Physics · 年份：1973 · DOI：10.1088/0022-3719/6/1/024 · 被引用次数：80 · 研究领域：Acoustic Wave Resonator Technologies、Ultrasonics and Acoustic Wave Propagation、Ferroelectric and Piezoelectric Materials

The dielectric properties of crystals are studied on the basis of the weakly anharmonic crystal model. Particular emphasis is placed on the low frequency behaviour of the dielectric susceptibility and on the possibility of a coupling between the dielectric properties and the fluctuations in the phonon density distribution. These fluctuations cannot be treated by low-order perturbation theory but can be discussed by solving the appropriate transport equation. The approximate solution to this equation is obtained following the techniques developed for ultrasonic attenuation.