On the preparation and crystal growth of SrLaAlO4

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

“…According to this model the elastic properties of the crystals possessing tetragonal structure can be affected in some directions by the existence of the point defects and structural imperfections [6,7]. These defects can create additional electric field E and influence the elastic properties of the crystal.…”

Investigation of Colour Centres in SrLaAlO4and SrLaGaO4Single Crystals

“…The thickness of the samples was in the range of 0.27-0.6 mm. One of the SLA samples had no markedly visible colouring [5]. All other SLA samples were yellow coloured of different tints starting from light-yellow to saturated yellow and each of them had inhomogeneíty of colouring described in Ref.…”

“…For both applications high quality crystals are required but many investigators [1][2][3][4][5] note a series of difficulties in growing crystals by the Czochralski method. The process of growing is very sensitive to the purity and the technique of raw material preparation, the charge stoichiometry, the growth thermal configuration, the growth and pulling rate, the pulling direction orientation and crystal-melt interface shape, the composition of the atmosphere, etc.…”

“…The process of growing is very sensitive to the purity and the technique of raw material preparation, the charge stoichiometry, the growth thermal configuration, the growth and pulling rate, the pulling direction orientation and crystal-melt interface shape, the composition of the atmosphere, etc. Deviations from the optimal growing conditions cause colouring of the crystal to light-yellow, yellow, green or brown colour and may even cause clouding and cracking of the crystal or appearance of foreign phase inclusions [5]. Colouring is more intense when the axial temperature gradient 'during the crystal pulling is greater.…”

“…In Ref. [5] it was also noted that crystal colouring was not uniform throughout the bulk of crystal: the core was usually a bit lighter than the outer parts of the crystal.…”