Intrinsic dielectric loss in crystals
- 1 December 1991
- journal article
- research article
- Published by Taylor & Francis in Advances in Physics
- Vol. 40 (6) , 719-767
- https://doi.org/10.1080/00018739100101552
Abstract
We review the current theory of intrinsic dielectric loss, that is the loss in a perfect crystal due to anharmonic interaction of a.c. electric field with the phonon system of the crystal. Both ordinary dielectrics and displacive ferroelectrics are considered. The theory predicts dependence of the loss on frequency ω and temperature T. This dependence is very sensitive to the symmetry of the crystal. For ordinary dielectrics, the results are presented and tabulated for all 32 symmetry groups, except for non-symmorphic groups. The existing experimental date are analysed and explained on the basis of the theory.Keywords
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