Statistical Theory of Rotational Phase Transition, I
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概要
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The rotational phase transition is discussed along the line of Kikuchi's method for order-disorder transformation in binary alloys. The potential energy for a pair of neighbouring molecules are -J/2 cos (i, j), where (i, j) is the angle between neighbouring molecular axas and J is the constant. The transition point J/2kT_a, that is a branching point of the integral equation, is 1.150 in the case of two-dimensional square lattice. This value is the lowest compared with those obtained by other theories. The discontinuity of the specific heat at the transition point is calculated, though some assumption has to be made to avoid the complexity of the calculation. The transition point does not vary even when an anisotropic potential is introduced.
- 一般社団法人日本物理学会の論文
- 1952-04-25
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