Archive: 2005 - Moldavian Journal of the Physical Sciences

05 Mar 2005

2005
V. 4
2
(p.201 - 210)

Dielectric and elastic properties of CdP2, ZnP2 and ZnAs2 single crystals

Authors:

Soshnikov, E.; Trukhan, V.; Haliakevich, T.; Soshnikava, H.

Summary:

The study of dielectric and elastic properties of CdP2, ZnP2, ZnAs2 single crystals was carried out at frequencies 102, 103 , 104, 106 Hz and 107 Hz relatively over the temperature range 78-400 К. Dielectric constant has values (ε = 102–103) over a wide temperature range between 150 K and 400 K. Lower than 150 K the value drops abruptly by almost two orders of magnitude and the dielectric constant is about 9-14 over a temperature range 78-100K. Conductivity σ of materials is composed of two parts: frequency-dependent (hopping) σh part and typical for semiconductors σs part. Hopping conductivity σh ∼ ωα is described by sublinear (α 1) power laws at low and high temperatures respectively. The sound velocities of single crystals were measured over temperature range of 78 - 400 K and elastic constants were calculated. Elastic properties show anomalous softening at small ranges about ΔT = 10-20 K with the following change of curve slope to the temperature axis.

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BibTeX

@article{ibn_3182,
author = {Soshnikov, E. and Trukhan, V.M. and Haliakevich, T.V. and Soshnikava, H.L.},
title = {Dielectric and elastic properties of CdP2, ZnP2 and ZnAs2 single crystals},
journal = {Moldavian Journal of the Physical Sciences},
year = {2005},
volume = {4 (2)},
pages = {201-210},
month = {Mar},
abstract = {(EN) The study of dielectric and elastic properties of CdP2, ZnP2, ZnAs2 single crystals was carried out at frequencies 102, 103
, 104, 106 Hz and 107 Hz relatively over the temperature 
range 78-400 К. Dielectric constant has values (ε = 102–103) over a wide temperature range between 150 K and 400 K. Lower than 150 K the value drops abruptly by almost two orders of magnitude and the dielectric constant is about 9-14 over a temperature range 78-100K. Conductivity σ of materials is composed of two parts: frequency-dependent (hopping) σh part 
and typical for semiconductors σs part. Hopping conductivity σh
∼ ωα is described by sublinear (α < 1) and superlinear (α > 1) power laws at low and high temperatures respectively. The sound velocities of single crystals were measured over temperature range of 78 - 400 K and elastic constants were calculated. Elastic properties show anomalous softening at small ranges about ΔT = 10-20 K with the following change of curve slope to the temperature axis. },
url = {https://ibn.idsi.md/vizualizare_articol/3182},
}

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“ ... ”

SM ISO690:2012

SOSHNIKOV, E.; TRUKHAN, V.; HALIAKEVICH, T.; SOSHNIKAVA, H.. Dielectric and elastic properties of CdP2, ZnP2 and ZnAs2 single crystals. In: Moldavian Journal of the Physical Sciences. 2005, nr. 2(4), pp. 201-210. ISSN 1810-648X.