Abstract
Data on the propagation of slightly nonequilibrium phonons, ΔT≪T b (T b is the cryostat bath temperature) in Y0.9Lu0.1AlO3 crystals with effective elastic scattering by rare-earth metal atoms are analyzed. The experimental results are interpreted on the basis of the “quasidiffusion” model, where three-phonon inelastic decay processes play a decisive role in the phonon kinetics. Monte Carlo calculations with these processes taken into account yield good quantitative agreement with the experimental data.
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Zh. Éksp. Teor. Fiz. 112, 325–331 (July 1997)
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Danil’chenko, B.A., Poplavskii, D.V., Ivanov, S.N. et al. Role of decay processes in the propagation of slightly nonequilibrium thermal-pulse phonons in YAlO3:Lu crystals. J. Exp. Theor. Phys. 85, 179–182 (1997). https://doi.org/10.1134/1.558323
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DOI: https://doi.org/10.1134/1.558323