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Phonon modes in KH2PO3-type crystals

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Abstract

New infrared reflectivity spectroscopic measurements for polarization of the electric field perpendicular to the ferroelectric axis of KDP in its ferroelectric phase at 7K, are presented and discussed. The optical mode parameters of modes belonging to B1 and B2 symmetry are deduced from the experimental infrared reflectivity, together with the fractional number of dipoles pointing in the + c direction.

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Authors and Affiliations

  1. Laboratoire Infrarouge Lointain, URA 809 CNRS Université de Nancy, I BP 239, F-54506, Vandoeuvre lès Nancy Cedex, France

    B. Wyncke & F. Brehat

  2. Groupe Matière Condensée et Matériaux URA. 804 C.N.R.S., Université de Rennes, IF-35042, Rennes Cedex, France

    A. Girard

Authors
  1. B. Wyncke
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  2. F. Brehat
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  3. A. Girard
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Wyncke, B., Brehat, F. & Girard, A. Phonon modes in KH2PO3-type crystals. Int J Infrared Milli Waves 14, 633–649 (1993). https://doi.org/10.1007/BF02209270

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  • DOI: https://doi.org/10.1007/BF02209270

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