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Crystal Research and Technology |
Cryst. Res. Technol. 42, 1370 (2007) - Abstract -
Elastic properties of KGd(WO4)2:Ho3+ single crystals studied by Brillouin spectroscopy
D. Kasprowicz, S. Mielcarek*, A. Trzaskowska*, A. Majchrowski**, E. Michalski**, and M. Drozdowski
Faculty of Technical Physics, Poznan University of Technology, Nieszawska 13 A, 60 – 965 Poznan, Poland
*Institute of Physics, A. Mickiewicz University, Umultowska 85, 61 – 614 Poznan, Poland
**Institute of Applied Physics, Military University of Technology, Kaliskiego 2, 00 – 908 Warsaw, Poland
| Keywords | double tungstates, KGd(WO4)2, KGd(WO4)2:Ho3+, Brillouin scattering |
| PACS | 78.35.+c, 78.20.-e |
| DOI | 10.1002/crat.200711034 |
The analysis some of the acoustic phonons propagating in pure and Ho3+-doped KGd(WO4)2 single crystals in the GHz frequency range by Brillouin scattering method has been presented. For investigated crystals the velocities of the longitudinal and transverse acoustic phonons [100], [010], [001], [101], [10-1] and [110] have been determined. Moreover, the value of elastic constants of pure and Ho3+-doped KGd(WO4)2 single crystals have been estimated. It was revealed that the presence of the Ho3+-ions in KGd(WO4)2 crystals, for the used doping concentration 1 at% and 8 at%, does not influence their elastic properties.
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