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Título

Delayed release of Li atoms from laser ablated lithium niobate

AutorChaos, J. A.; Dreyfus, R. W.; Perea, Ángel ; Serna, Rosalía ; Gonzalo de los Reyes, José; Afonso, Carmen N.
Palabras claveLithium compounds
Piezoelectric thin films
Laser ablation
Pulsed laser deposition
Atomic absorption spectroscopy
Fecha de publicación31-ene-2000
EditorAmerican Institute of Physics
CitaciónApplied Physics Letters 76(5): 649 (2000)
ResumenThe present vapor-phase optical (atomic) absorption measurements study the escape dynamics of Li atoms from a LiNbO3 target surface upon laser ablation in vacuum. The objective is to understand the low-Li content of LiNbO3 films prepared by pulsed laser deposition. A primary result is a delayed release of Li atoms, 2–20 µs after the laser pulse; they eject with a velocity of 6×105 cm s–1, which is consistent with an electronic ejection mechanism. The long emission period means there are almost no intraplume Li collisions in the gas phase and no forward focusing of the delayed released atoms. This appears to explain the low-Li content usually found in films grown in the normal direction.
Descripción3 pages, 3 figures.-- PACS: 79.20.Ds; 81.15.Fg; 77.84.Dy; 82.80.Ch
Versión del editorhttp://dx.doi.org/10.1063/1.125847
URIhttp://hdl.handle.net/10261/21637
DOI10.1063/1.125847
ISSN0003-6951
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