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Influence of Molecular Electric Fields on Elastic Properties of Perovskite-Like Substrates

100%

Hoffmann T. J., Drozdowski M., Kasprowicz D.

Acta Physica Polonica A

1997

vol. 92

issue 1

187-190

The dynamics of ABCO_{4} deformable crystals with electroelastic interacting was expressed by theoretical model with wave-linear approximation. The one-dimensional problem was considered assuming that the field variables are represented by plane electroelastic waves. As a result the dispersion equation for these crystals was obtained. Using this model the data concerning the elastic properties of SrLaGaO_{4} are discussed.

Elastooptic Constants of SrLaAlO_{4} and SrLaGaO_{4} Single Crystals Determined by Brillouin Scattering

88%

Drozdowski M., Pajączkowska A., Kasprowicz D., Ziobrowski P., Gloubokov A.

Acta Physica Polonica A

1997

vol. 92

issue 1

177-181

In this paper we report the elastooptic constants p_{ij} of strontium lanthanum aluminate, SrLaAlO_{4} and strontium lanthanum gallate SrLaGaO_{4} single crystals, which were determined at room temperature using Brillouin scattering method. In order to investigate the elastooptic constants of SrLaAlO_{4} and SrLaGaO_{4} 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.

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2 Acta Physica Polonica A

2 1997

2 Drozdowski M.

2 Kasprowicz D.

1 Gloubokov A.

1 Hoffmann T. J.

1 Pajączkowska A.

1 Ziobrowski P.

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Influence of Molecular Electric Fields on Elastic Properties of Perovskite-Like Substrates

Elastooptic Constants of SrLaAlO_{4} and SrLaGaO_{4} Single Crystals Determined by Brillouin Scattering