Features of the management of the rule of Urbakh in ZnSe:Yb crystals

O.V. Kinzerska; I.M. Senko; M.M. Slyotov; O.M. Slyotov; T.M. Mazur

doi:10.15330/pcss.24.3.495-498

Authors

O.V. Kinzerska Yuri Fedjkovych Chernivtsy National University, Chernivtsy, Ukraine
I.M. Senko Yuri Fedjkovych Chernivtsy National University, Chernivtsy, Ukraine
M.M. Slyotov Yuri Fedjkovych Chernivtsy National University, Chernivtsy, Ukraine
O.M. Slyotov Yuri Fedjkovych Chernivtsy National University, Chernivtsy, Ukraine
T.M. Mazur Ivano-Frankivsk national technical university of oil and gas, Ivano-Frankivsk, Ukraine

DOI:

https://doi.org/10.15330/pcss.24.3.495-498

Keywords:

zinc selenide, Urbach rule, dynamic and static disordering

Abstract

A comparative analysis of the edge absorption spectra measured in the temperature range of 290–470 K for two types of zinc selenide substrates has been carried out. It has been established that the self-absorption edge of pure ZnSe: Yb melt crystals is described by the «crystalline» approximation of the general Urbach rule, which is a consequence of dynamic disordering. In samples doped with ytterbium, at 330 K, a reversible transition from dynamic to static disordering was detected, which is described by the “glassy” approximation of the general Urbach rule.

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