The ferroelectric transition in hexagonal ice I h

Author: Hentschel H.G.E.  

Publisher: Taylor & Francis Ltd

ISSN: 1362-3028

Source: Molecular Physics, Vol.38, Iss.2, 1979-08, pp. : 401-411

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Abstract

A model is proposed for the ferroelectric phase transition in hexagonal ice I h . This model obeys the ice rule within a cluster approximation and includes long-range dipole-dipole interactions. The ferroelectric transition temperature, dielectric tensor, and anisotropy are calculated and compared with experiment. A ferroelectric transition is predicted at 73 K which agrees closely with the experimental results of Kawada. At higher temperatures the dielectric tensor and anisotropy agree with the experimental results obtained by Wörz and Cole.