The Sites of Premelting in Organic Compounds

Author:

Dosseh Gilberte1,Fuchs Alain H.1

Affiliation:

1. 1Laboratoire de Chimie Physique des Materiaux Amorphes (U.A. 1104 C.N.R.S.), Bätiment 490, Universite Paris-Sud, F-91405 Orsay, France

Abstract

AbstractBartis recently proposed a theory which should allow to determine whether impurities or defects are responsible for the premelting phenomena in crystalline solids. We have tested this model on several orientationally disordered molecular crystals studied by proton NMR spectroscopy. This showed that extended defects, and more likely grain boundaries are at the origin of the premelting phenomena in these crystals.

Publisher

Walter de Gruyter GmbH

Subject

Physical and Theoretical Chemistry,General Physics and Astronomy,Mathematical Physics

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