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11.—The Symmetry of Atomic Vibrations in KH2PO4*

Published online by Cambridge University Press:  14 February 2012

H. Montgomery  and
G. L. Paul
H. Montgomery
Affiliation:
Department of Physics, University of Edinburgh
G. L. Paul
Affiliation:
Department of Physics, University of Edinburgh
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Synopsis

The space group for paraelectric KH2PO4 is described and tables of irreducible representations are presented. These are used to derive the symmetry of the vibrational modes for both the heavy atoms and the hydrogen atoms, the latter being treated by a simple pseudo-spin model. Recent experiments on KH2PO4 and related materials are analysed in terms of the mode symmetries, and the light these experiments throw upon the nature of the phase transitions is briefly discussed.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh Section A: Mathematics , Volume 70 , 1972 , pp. 107 - 124
Copyright
Copyright © Royal Society of Edinburgh 1972

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