Please use this identifier to cite or link to this item: https://hdl.handle.net/10593/13862
Title: Propagacja dźwięku w pobliżu przemiany fazowej
Other Titles: Sound propagation near the magnetic phase transition
Authors: Pawlak, Andrzej
Editors: Muzia, Katarzyna
Keywords: sound propagation
phase transitions
Issue Date: 2004
Publisher: Wydawnictwo Naukowe UAM
Citation: Pawlak, A. Propagacja dźwięku w pobliżu przemiany fazowej. Poznań: Wydawnictwo Naukowe UAM, 2004.
Abstract: The book deals with the theoretical studies of critical behaviour of ultrasonic wave attenuation and propagation velocity in magnets. The effect of spin-lattice relaxation on the ultrasonic attenuation and velocity is investigated on the basis of the stochastic model including the energy relaxation and the sound mode. A novel high frequency regime in the ultrasonic attenuation is predicted. The scaling functions are calculated in the one-loop approximation within the renormalisation group formalism. In the diffusive version of the model a detailed analysis of the connection between the heat conduction and sound propagation is studied. An overview of experimental and theoretical sound attenuation exponents is also given. The ultrasonic attenuation measurements in MnF2 are interpreted in terms of the theoretical model proposed.
URI: http://hdl.handle.net/10593/13862
ISBN: 83-232-1420-4
ISSN: 0554-825X
Appears in Collections:Książki/rozdziały (WF)

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