Thermal conductivity of solid cyclohexane in orientationally ordered and disordered phases |
| |
Authors: | V A Konstantinov V P Revyakin V V Sagan O I Pursky V M Sysoev |
| |
Institution: | 1.Institute for Low Temperature Physics and Engineering,National Academy of Sciences of Ukraine,Kharkov,Ukraine;2.Taras Shevchenko National University of Kyiv,Kiev,Ukraine |
| |
Abstract: | Thermal conductivity Λ
P
of solid cyclohexane is measured at a pressure P = 0.1 MPa in the temperature range from 80 K to the melting point, which covers the ranges of low-temperature orientationally
ordered phase II and high-temperature orientationally disordered phase I. Thermal conductivity Λ
V
is measured at a constant volume in orientationally disordered phase I. The thermal conductivity measured at atmospheric
pressure decreases with increasing temperature as Λ
P
∝ T
−1.15 in phase II, whereas Λ
P
∝ T
−0.3 in phase I. As temperature increases, isochoric thermal conductivity Λ
V
in phase I increases gradually. The experimental data are described in terms of a modified Debye model of thermal conductivity
with allowance for heat transfer by both phonons and “diffuse” modes. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|