The urbach rule for the PbO-SiO2 glasses / Vaǐnshteǐn I.A., Zatsepin A.F., Kortov V.S., Shchapova Yu.V. // Physics of the Solid State. - 2000. - V. 42, l. 2. - P. 230-235.

ISSN:

10637834

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Article

Abstract:

An analysis is made of the behavior of optical spectra of lead-silicate glasses, with variable lead content near the UV absorption edge, and within the 80-470-K range. A generalized formulation of the modified Urbach rule, applicable to glassy materials within a broad temperature range, is proposed for the interpretation of experimental spectral relations. Within this approach, the effective energies of the phonons responsible for the temperature-induced shift of the Urbach edge have been calculated. It is shown that the spectral and temperature parameters of the modified Urbach rule are structure-sensitive, and that their concentration behavior reflects the change of the type of short-range order in the glassy matrix. © 2000 MAIK "Nauka/Interperiodica".

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Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-0034342988&partnerID=40&md5=6368129f016e2690d7a83ae24447889c
Affiliations	Ural State Technical University, ul. Mira 19, Yekaterinburg, 620002, Russian Federation
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Correspondence Address	Vaǐnshteǐn, I.A.; Ural State Technical University, ul. Mira 19, Yekaterinburg, 620002, Russian Federation; email: wia@dpt.ustu.ru
Language of Original Document	English
Abbreviated Source Title	Phys. Solid State
Source	Scopus