Ferroelectric Phase Transition of Hydrogen-Bonded Crystal KDP
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概要
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The ferroelectric phase transition of hydrogen-bonded crystal KDP is studied under a consideration that the electric polarization is brought by tetrahedral radicals PO_4 which are described by orientational rotators with 6 directions and protons mediate interaction between the neighboring PO_4 radicals. The isotope effect is explained by assuming the difference of rotator-proton coupling constants between KDP and DKDP, without the introduction of tunnelling. The configurational energies for 4 protons around a PO_4 radical are derived, and from the above assumption the mass dependence of energy levels is obtained against the Slater theory.
- 社団法人日本物理学会の論文
- 1994-04-15
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