Theory of Structural Phase Transition in Alkali Cyanides

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概要

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• Structural phase transitions in alkali cyanides are explained on the basis of the model of elastic system interacting with rotational degrees of freedom of CN^- ions. Depending on the orientational states of CN^- ions the strains {e_u,e_υ} and {e_<xy>,e_<yz>,e_<zx>} of the E_g and T_<2g> symmetry couple nonlinearly. As the result we obtain the phase diagram of the possible transition sequences in the parameter space. The cases for NaCN, KCN and RbCN are compared with the result in good agreement.

• 理論物理学刊行会の論文
• 1985-03-31

著者

• Ohno E

  Kwansei Gakuin Univ. Nishinomiya Jpn

• Ohno Eizo

  Department Of Physics Kwansei Gakuin University:sharp Corporation Central Research Laboratories

• Yoshimitsu Koji

  Department Of Physics Faculty Of Science Kyoto University

• OHNO Eizo

  Department of Physics, Kwansei Gakuin University

• YOSHIMITSU Koji

  Faculty of Science, Kwansei Gakuin University

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• Phenomenological Theory of Phase Transition in Beta-Eucryptite
• 10)Theory of Dirty Ferroelectrics
• Note on Anomalous Dielectric Relaxation in Ferroelectrics
• 9)Lattice Dynamical Theory of Sinusoidal Antiferroelectricity in Thiourea
• Theory of Ferroelastic Phase Transition in NaCN,KCN and RbCN
• Lattice Instability in SrTiO_3
• A Note on the Lattice Vibration with Glass-Like Disorder

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