Orientational Order of Guest H2S Molecules in β-Quinol Clathrate

Shoji Hirokawa, Tomoko Imasaka

研究成果: Contribution to journalArticle査読

2 被引用数 (Scopus)

抄録

The orientational ordering of guest H2S molecules is studied using a mean-field theory on the basis of quantum statistical mechanics; it is assumed that the guest system is a quenched one consisting of a normal mixture of ortho and para H2S, and that the guest molecules which are influenced by a crystalline field, of which strength is estimated from far-infrared spectra, couple with one another via dipolar interactions. A phase diagram based on an effective dipole moment p is obtained. It shows: If p = 0.800D, a second-order transition between a partially disordered and a disordered phase occurs at T = 15.2 K, and the temperature dependence of the heat capacity well coincides with experiment; if p < 0.778D, no cooperative order is expected.

本文言語英語
ページ(範囲)3843-3850
ページ数8
ジャーナルjournal of the physical society of japan
57
11
DOI
出版ステータス出版済み - 1 1 1988

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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