Yu. N. Barabanenkov, S. N. Ivanov, A. V. Taranov, E. N. Khazanov, H. Yagi, T. Yanagitani, K. Takaichi, J. Lu, J. F. Bisson, A. Shirakawa, K. Ueda, A. A. Kaminskii, “Nonequilibrium acoustic phonons in Y$_3$Al$_5$O$_{12}$-based nanocrystalline ceramics”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2004, Volume 79, Issue 7,Pages 421

This article is cited in 29 papers

CONDENSED MATTER

Nonequilibrium acoustic phonons in Y$_3$Al$_5$O$_{12}$-based nanocrystalline ceramics

Yu. N. Barabanenkov^a, S. N. Ivanov^a, A. V. Taranov^a, E. N. Khazanov^a, H. Yagi^b, T. Yanagitani^b, K. Takaichi^c, J. Lu^c, J. F. Bisson^c, A. Shirakawa^c, K. Ueda^c, A. A. Kaminskii^d

^a Institute of Radio Engineering and Electronics, Russian Academy of Sciences
^b Konoshima Chemical Co., Takuma Works, 769-1103 Kagawa, Japan
^c Institute for Laser Science, University of Electro-communications, 182-8585 Tokyo, Japan
^d Institute of Cristallography RAS

Abstract: The phonon transport processes in high-transparency nanocrystalline laser ceramics based on cubic Y$_3$Al$_5$O$_{12}$ garnet oxide were investigated by the heat-pulse technique. The propagation kinetics of nonequilibrium acoustic phonons was studied in the range of helium temperatures (1.7–3.8 K). The structural model is suggested for the intergrain layers, and their thickness is estimated.

PACS: 81.07.Bc

Received: 03.03.2004