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Kinetics of thermal phonons and the structure of nanodispersed iron-containing corundum-based cermets at liquid-helium temperatures |
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| Authors: | O. V. Karban’ E. I. Salamatov A. V. Taranov E. N. Khazanov O. L. Khasanov |
| Affiliation: | (1) Physicotechnical Institute, Ural Division, Russian Academy of Sciences, Izhevsk, 426000, Russia;(2) Institute of Radio-Engineering and Electronics, Russian Academy of Sciences, ul. Mokhovaya 11-7, Moscow, 125009, Russia;(3) Spektr Research Center of Promising Technologies, Tomsk Polytechnical University, Tomsk, 620219, Russia |
| Abstract: | The kinetics of weakly nonequilibrium subterahertz thermal phonons is studied in nanodispersed iron-containing corundum-based cermets at liquid-helium temperatures. For the chosen method of fabricating cermets (which restricts grain growth), iron inclusions are shown to be described as point trapping centers of phonons. The transport of nonequilibrium phonons is analyzed in a ceramic matrix containing metallic trapping centers. |
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