Change in the surface morphology and chemical composition of some oxide crystals under UV laser irradiation

The effect of the 248-nm KrF and 355-nm YAG:Nd{sup 3+} laser radiation on the surface morphology and chemical composition of SrTiO{sub 3}, Sr{sub 2}RuO{sub 4}, PbMoO{sub 4}, LiNbO{sub 3}, Y{sub 3}Al{sub 5}O{sub 12}, and Al{sub 2}O{sub 3} crystals has been studied. A relationship between the laser en...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2011-07, Vol.41 (7), p.619-625
Main Authors: Kuzanyan, A S, Badalyan, G R, Kuzanyan, V S, Nikogosyan, V R, Pilosyan, S Kh, Nesterov, V M
Format: Article
Language:English
Subjects:
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTALS
ELECTROMAGNETIC RADIATION
ENERGY DENSITY
IONIZING RADIATIONS
LASER RADIATION
LASERS
LEAD COMPOUNDS
LITHIUM COMPOUNDS
MICROANALYSIS
MOLYBDATES
MOLYBDENUM COMPOUNDS
MORPHOLOGY
NEODYMIUM LASERS
NIOBATES
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
RADIATION EFFECTS
RADIATIONS
REFRACTORY METAL COMPOUNDS
ROUGHNESS
SOLID STATE LASERS
STRONTIUM COMPOUNDS
STRONTIUM TITANATES
SURFACE PROPERTIES
SURFACES
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
X RADIATION
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Summary:The effect of the 248-nm KrF and 355-nm YAG:Nd{sup 3+} laser radiation on the surface morphology and chemical composition of SrTiO{sub 3}, Sr{sub 2}RuO{sub 4}, PbMoO{sub 4}, LiNbO{sub 3}, Y{sub 3}Al{sub 5}O{sub 12}, and Al{sub 2}O{sub 3} crystals has been studied. A relationship between the laser energy density on the sample surface and the surface roughness caused by the irradiation is determined. A technique for determining exactly the geometric surface characteristics is proposed. The effect of the surface roughness on the results of energy-dispersive X-ray (EDX) microanalysis has been investigated. A method for correcting the EDX data for samples with a rough surface has been developed. It is shown that the small variation in the composition of PbMoO{sub 4}, LiNbO{sub 3}, Y{sub 3}Al{sub 5}O{sub 12}, and Al{sub 2}O{sub 3} samples after laser irradiation can be explained by the measurement error, related to the change in the surface roughness. At the same time, the irradiation of SrTiO{sub 3} and Sr{sub 2}RuO{sub 4} crystals by a YAG:Nd laser changes the chemical composition of their surface layers. (interaction of laser radiation with matter)
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2011v041n07ABEH014420