Elastooptic Constants of SrLaAlO4 and SrLaGaO4 Single Crystals Determined by Brillouin Scattering

M. Drozdowskia, A. Pajączkowskab,c, D. Kasprowicza, P. Ziobrowskia and A. Gloubokovc aInstitute of Physics, Poznań University of Technology, Piotrowo 3, 60-965 Poznań, Poland bInstitute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland cInstitute of Electronic Materials Technology, Wólczyńska 133, 01-919 Warszawa, Poland

Full Text PDF

In this paper we report the elastooptic constants pij of strontium lanthanum aluminate, SrLaAlO4 and strontium lanthanum gallate SrLaGaO4 single crystals, which were determined at room temperature using Brillouin scattering method. In order to investigate the elastooptic constants of SrLaAlO4 and SrLaGaO4 single crystals, a substitution method proposed by Cummins and Schoen, and developed by Nelson and Lax was used. The obtained results are also discussed in terms of the nature defects which might arise in these crystals during growth process.

DOI: 10.12693/APhysPolA.92.177 PACS numbers: 33.20.Fb, 78.35.+c, 63.20.-e