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Prog. Theor. Phys. Supplement No.80 (1984) pp. 156-162

Order-Disorder Model of PO₄-Dipoles for KH₂PO₄ Type Ferroelectric Phase Transition

Masaharu Tokunaga

Research Institute of Applied Electricity, Hokkaido University, 060 Sapporo

(Received September 13, 1984)

Abstract:

An order-disorder model of PO₄ dipoles is presented from a new viewpoint on the mechanism of phase transition in KH₂PO₄ type hydrogen-bonded crystals. This model is based on recent experimental results of light scattering and has been confirmed also by recent Raman spectroscopic studies. The relation of this model to conventional proton order-disorder models is discussed in connection with the magnitude of the transition entropy and the ice constraint.

URL : http://ptp.ipap.jp/link?PTPS/80/156/
DOI : 10.1143/PTPS.80.156

[ Full Text PDF : FREE ACCESS (599K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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References:

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Citing Article(s) :

1. Journal of the Physical Society of Japan 59 (1990) pp. 2600-2601 :

   The Temperature Dependence of the Internal Mode Raman Scattering Intensity in DKDP

   Masaru Kasahara, Kiyosi Motida and Mizuhiko Ichikawa

2. Journal of the Physical Society of Japan 63 (1994) pp. 1001-1008 :

   Dynamical Properties of Protons in KH₂PO₄ Studied by Incoherent Neutron Scattering

   Susumu Ikeda, Yukio Noda, Hidehiko Sugimoto and Yasusada Yamada

3. Journal of the Physical Society of Japan 63 (1994) pp. 3691-3703 :

   Dynamical Properties of Protons in KH₂PO₄. I. –Proton Self-Trapped State and Its Incoherent Tunneling–

   Yasusada Yamada and Susumu Ikeda

4. Journal of the Physical Society of Japan 63 (1994) pp. 3756-3762 :

   Dynamical Properties of Protons in KH₂PO₄. II. –Isotope Effect on the Ferroelectric Phase Transition–

   Yasusada Yamada

5. Journal of the Physical Society of Japan 66 (1997) pp. 1044-1049 :

   Anisotropic Neutron Critical Scattering in DKDP Originating from the Ice Rule by Six-States Rotator Model

   Takashi Nikami and Masaharu Tokunaga

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