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

Journal Article · Sun Jul 31 00:00:00 EDT 2011 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2011V041N07ABEH014420· OSTI ID:21552642

Kuzanyan, A S; Badalyan, G R; Kuzanyan, V S; Nikogosyan, V R; Pilosyan, S Kh; Nesterov, V M

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)

• OSTI ID: 21552642
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 41, Issue 7; Other Information: DOI: 10.1070/QE2011v041n07ABEH014420; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM OXIDES
CHEMICAL COMPOSITION
CRYSTALS
ENERGY DENSITY
LASER RADIATION
LEAD COMPOUNDS
LITHIUM COMPOUNDS
MICROANALYSIS
MOLYBDATES
MORPHOLOGY
NEODYMIUM LASERS
NIOBATES
NIOBIUM OXIDES
RADIATION EFFECTS
ROUGHNESS
STRONTIUM TITANATES
SURFACE PROPERTIES
SURFACES
X RADIATION
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
CHALCOGENIDES
ELECTROMAGNETIC RADIATION
IONIZING RADIATIONS
LASERS
MOLYBDENUM COMPOUNDS
NIOBIUM COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
REFRACTORY METAL COMPOUNDS
SOLID STATE LASERS
STRONTIUM COMPOUNDS
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS