Orientational Order of Guest H_2S Molecules in β-Quinol Clathrate

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概要

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• The orientational ordering of guest H.S molecules is studied using a mean-fieldtheory on the basis of quantum statistical mechanics; it is assumed that the guestsystem is a quenched one consisting of a normal rrxixture of ortho and para H.S, andthat the guest molecules which are influenced by a crystalline field, of which strengthis estimated from far-infrared spectra, couple with one another via dipolar interac-tions. A phase diagram based on an effective dipole moment p is obtained. It shows:If 7>=0.800D, a second-order transition between a partially disordered and a disor-dared phase occurs at T= 15.2 K, and the temperature dependence of the heat capac-ity well coincides with experiment; if p<0.7780, no cooperative order is expected.

• 社団法人日本物理学会の論文
• 1988-11-15

著者

• Iwasaki Takuya

  Interdisciplinary Graduate School Of Engineering Sciences Kyushu University

• HIROKAWA Shoji

  Laboratory of Chemistry,Dept.of Environmental Design,Kyushu Institute of Design

• Hirokawa Shoji

  Laboratory Of Chemistry Kyushu Institute Of Design

• Hirokawa Shoji

  Laboratory Of Chemistry Department Of Environmental Design Kyushu Institute Of Design

• Iwasaki T

  Interdisciplinary Graduate School Of Engineering Sciences Kyushu University

• IWASAKI Tomoko

  Laboratory of Chemistry,Kyushu Institute of Design

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