"
  • Your are not authorized to view this resource!

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

CRITICAL RATE OF COOLING GLASSY MELTS UNDER CONDITIONS OF CONTINUOUS NUCLEATION. THE APPLICATION TO SOME CHALCOGENIDE GLASSES

A. F. Petrovic1, S. R. Lukic1,* , D. D. Štrbac1

Affiliation

  1. Department of Physics, Faculty of Sciences, University of Novi Sad, Trg D. Obradovi a 4, 21000 Novi Sad, Serbia and Montenegro

Abstract

The aim of this work is to derive a more exact expression for the critical cooling rate and to verify it experimentally on the systems As2Se3, AsSeI, Cu5[As2Se3]95, Cu15[As2Se3]85, and Cu15[AsSe1.4I0..2]85. We assume that in addition to the growth of the nuclei, one should take into account the continuous increase in their number, i.e. the occurrence of new nucleation events. The obtained equation shows the dependence of the ratio of crystalline phase volume on the critical cooling rate. In principle, this relation allows for the calculation of the cooling rate b that should be applied under the condition that the crystallization rate does not exceed a value ao, given in advance. The calculated cooling rates for the investigated systems can be considered as more exact compared to those previously reported for similar systems and are in agreement with our previous experimental findings..

Keywords

Chalcogenides, Crystallization rate, Critical cooling rate.

Submitted at: Nov. 17, 2004
Accepted at: Dec. 6, 2004

Citation

A. F. Petrovic, S. R. Lukic, D. D. Štrbac, CRITICAL RATE OF COOLING GLASSY MELTS UNDER CONDITIONS OF CONTINUOUS NUCLEATION. THE APPLICATION TO SOME CHALCOGENIDE GLASSES, Journal of Optoelectronics and Advanced Materials Vol. 6, Iss. 4, pp. 1167-1176 (2004)