Orientational Relaxation in a Random Dipolar Lattice: Role of Spatial Density Fluctuations in Supercooled Liquids

Ravichandran, S and Bagchi, Biman (1996) Orientational Relaxation in a Random Dipolar Lattice: Role of Spatial Density Fluctuations in Supercooled Liquids. In: Physical Review Letters, 76 (4). pp. 644-647.

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Abstract

We have carried out a computer "experiment" of orientational relaxation in a spatially random and orientationally disordered dipolar lattice (RDL), generated by quenching only the translational motion of a dense liquid. In the high polarity limit, the orientational relaxation of the RDL is dramatically different from that of the parent liquid, the former exhibits a very slow, nonexponential long time decay of the orientational correlation functions and markedly non-Debye dielectric relaxation. These results clearly demonstrate the importance of spatial density fluctuations in orientational relaxation.

Item Type:	Journal Article
Publication:	Physical Review Letters
Publisher:	American Physical Society
Additional Information:	Copyright of this article belongs to American Physical Society.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited:	15 Dec 2006
Last Modified:	19 Sep 2010 04:33
URI:	http://eprints.iisc.ac.in/id/eprint/9162

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