Title :
Dielectric losses in diamond-like materials at the cryogenic temperatures in the millimeter waveband
Author :
Derkach, V.N. ; Golovashchenko, R.V. ; Korzh, V.G. ; Plevako, A.S. ; Tarapov, S.I. ; Garin, B.M.
Author_Institution :
A.Ya. Usikov Inst. for Radiophys. & Electron., Kharkov, Ukraine
Abstract :
The paper presents the study results of the temperature dependence of the dielectric loss at millimeter waves in the temperature range of 1.0 - 300 K in some low-absorbing dielectric and semiconductor materials having the diamond-like crystal lattices. It is shown that the absorption maxima at helium temperatures in materials with a centrosymmetric lattice are primary associated with both intrinsic and extrinsic losses, and in materials with a noncentrosymmetric lattice - with extrinsic losses. The relaxation times, activation energies and other parameters characterizing the Debye mechanism of extrinsic losses of the investigated materials are determined on the base of the approximation model of temperature dispersion of losses.
Keywords :
approximation theory; carrier relaxation time; dielectric losses; dielectric materials; Debye mechanism; absorption maxima; activation energies; approximation model; cryogenic temperatures; diamond-like crystal lattices; diamond-like materials; dielectric losses; extrinsic losses; helium temperatures; intrinsic losses; low-absorbing dielectric materials; millimeter waveband; millimeter waves; noncentrosymmetric lattice; relaxation times; semiconductor materials; temperature 1 K to 300 K; temperature dispersion; Dielectric losses; Indium phosphide; Permittivity;
Conference_Titel :
Microwave & Telecommunication Technology (CriMiCo), 2014 24th International Crimean Conference
Conference_Location :
Sevastopol
Print_ISBN :
978-966-335-412-5
DOI :
10.1109/CRMICO.2014.6959693