Investigation of As Grown and Induced Structural Defects in SrLaXO_{4} (x = Al, Ga) Crystals

• Authors: W. Ryba-Romanowski , S. Gołąb , P. Dereń , G. Dominiak-Dzik , W. Pisarski , A. Gloubokov
• Languages of publication: EN

Abstracts

EN

SrLaGaO_{4} and SrLaAlO_{4} substrates grown by the Czochralski method have no twins or subgrains however they show strong tendency to form point defects. The nature of these defects is not well understood yet. They may be associated with deviations from stoichiometry andor oxygen atoms located in the interstitial positions. Virtually all title crystals grown by the Czochralski method display various colours from light green to deeply red owing to light absorption by point defects. Absorption centres appear to be very stable in time and resistant to usual thermal treatment. UV excitation increases the density of defects and gives rise to strong photoluminescence, otherwise too weak to be observed.

Keywords

EN

78.55.Hx; 42.70.Hj

Discipline

• 42.70.Hj: Laser materials
• 78.55.Hx: Other solid inorganic materials

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1997
• Volume: 92
• Issue: 1
• Pages: 191-196

Dates

published

1997-07

Contributors

author

W. Ryba-Romanowski

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 937, 50-950 Wrocław, Poland

author

S. Gołąb

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 937, 50-950 Wrocław, Poland

author

P. Dereń

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 937, 50-950 Wrocław, Poland

author

G. Dominiak-Dzik

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 937, 50-950 Wrocław, Poland

author

W. Pisarski

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 937, 50-950 Wrocław, Poland

author

A. Gloubokov

• Institute of Electronic Materials Technology, Wólczyńska 133, 01-919 Warsaw, Poland

Identifiers

DOI

10.12693/APhysPolA.92.191