Heat transfer in gama-phase of oxygen

Details Heat transfer in gama-phase of oxygen Heat transfer in gama-phase of oxygen

2004-12-02

arxiv.org/abs/cond-mat/0412059v1

Low Temp. Phys.(2005)

Physics

Condensed Matter

Disordered Systems and Neural Networks

Postscript 9 pages, 2 figures, 1 table. To be published in 2005

Scientific paper

10.1007/s10909-005-5482-y

The isochoric thermal conductivity of gama-O2 has been studied on samples of varying density in the temperature interval from 44 K to the onset of melting. The thermal conductivity of nearly free sample decreases at rising temperature along the isochores. It is shown that the absolute value of thermal conductivity in the gama-phase of O2 is close to its lower limit and most of the heat is transported by "diffusive" modes. The growth of thermal conductivity in gama-O2 is attributed to the decay of the phonon scattering at the rotational excitations of the molecules and at the short-range magnetic order fluctuations at rising temperature.

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