作者: Jonas Grigas
DOI: 10.1080/00150190902876249
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摘要: This paper is a review article that emphasizes dynamical processes of electromagnetic wave interaction with ferroelectrics proceed in such way characteristic frequencies various excitations related to polarization lie microwave range: i) soft mode frequency number displacive on approaching the Curie temperature drops into millimeter range or splits components, lower which lies at microwaves and explains static permittivity; ii) relaxation order-disorder also range, iii) permittivity relaxors dipolar glasses occurs microwaves. Results complete dielectric spectra fundamental dispersion 1 MHz 1012 Hz its microscopic description most materials are presented discussed.