Relaxation dynamics of lithium ions in lead bismuthate glasses

Pan, A. ; Ghosh, A. (2000) Relaxation dynamics of lithium ions in lead bismuthate glasses Physical Review B, 62 (5). pp. 3190-3195. ISSN 0163-1829

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Official URL: http://prb.aps.org/abstract/PRB/v62/i5/p3190_1

Related URL: http://dx.doi.org/10.1103/PhysRevB.62.3190

Abstract

We have investigated relaxation dynamics of lithium ions in lead bismuthate glasses in the frequency range from 10 Hz to 2 MHz and in the temperature range from 303-553 K. Using the Anderson-Stuart model, we have calculated the activation energy, which is observed to be lower than that of the dc conductivity. We have studied the relaxation mechanism of these glasses in the framework of the electric modulus and conductivity formalisms. The microscopic parameters obtained from these formalisms have been compared. We have also calculated the decoupling index and correlated them with the stretched exponential relaxation parameter and the dc conductivity.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
ID Code:11778
Deposited On:13 Nov 2010 13:55
Last Modified:02 Jun 2011 05:09

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