Diffusive Propagation of Phonon Beams in Yttrium Aluminum Garnets Containing Substitutional Rare Earth Atoms

• Authors: S. Ivanov , E. Khazanov , T. Paszkiewicz , A. Taranov , M. Wilczyński
• Languages of publication: EN

Abstracts

EN

The diffusive maxima of phonon signals are studied for a number of solid solutions of rare earth atoms in yttrium aluminum garnets. The used exact formula for the diffusion constants allows for qualitative discussion of the obtained results. The established energy of phonons, forming the diffusive maximum of phonon signal of the temperature T_{H} arriving at the bolometer, ranges from 3.2k_{B}T_{H} to 4.2k_{B}T_{H}, which is in reasonable agreement with the existing estimations. The qualitative analysis allows us to estimate the contribution, made by the rare earth ions occupying the octahedral positions of the sixfold oxygen coordination, to the scattering of phonons due to lattice imperfections in yttrium aluminum garnets.

Keywords

EN

63.20.Mt; 66.70.+f; 05.60.+w

• Journal: Acta Physica Polonica A
• Year: 1995
• Volume: 87
• Issue: 2
• Pages: 381-386

Dates

published

1995-02

Contributors

author

S. Ivanov

• Institute of Radioengineering and Electronics, Russian Academy of Sciences, Mokhovaya 11, Moscow, GSP-3, 103907, Russia

author

E. Khazanov

• Institute of Radioengineering and Electronics, Russian Academy of Sciences, Mokhovaya 11, Moscow, GSP-3, 103907, Russia

author

T. Paszkiewicz

• Institute of Theoretical Physics, University of Wrocław, Pl. M. Borna 9, 50-204 Wrocław, Poland

author

A. Taranov

• Institute of Radioengineering and Electronics, Russian Academy of Sciences, Mokhovaya 11, Moscow, GSP-3, 103907, Russia

author

M. Wilczyński

• Institute of Theoretical Physics, University of Wrocław, Pl. M. Borna 9, 50-204 Wrocław, Poland

Identifiers

DOI

10.12693/APhysPolA.87.381