Composition and species evolution in a laser-induced LuMnO3 plasma

• Published in: Applied surface science 2012-09, Vol.258 (23), p.9355-9358
• Main Authors: Bator, Matthias, Hu, Yi, Esposito, Martin, Schneider, Christof W., Lippert, Thomas, Wokaun, Alexander
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Emission spectroscopy; Exact sciences and technology; Laser deposition; Materials science; Methods of deposition of films and coatings; film growth and epitaxy; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Photoluminescence; Physics; Plasma characterization; Plasma mass spectrometry; Pulsed laser deposition; Rare-earth manganates
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2012.04.024

► Plasma mass spectrometry and spectroscopy of LuMnO3. ► Comparison of the plasma composition and evolution under different conditions. ► Different plasma composition and evolution for vacuum and O2/N2O background. ► Relation of mass spectrometry results with observations in emission spectroscopy. ► Most advantageous growth conditions for LuMnO3 in N2O background. Pulsed laser deposition is often used to grow multi-elemental thin films from stoichiometric targets. The growth process is influenced by a wide variety of parameters like the target composition, background gases, laser wavelength, laser fluence, or spot size. The changes these parameters induce in the film growth also affect the plasma plume and species formed during laser ablation. For oxide growth O2, and sometimes N2O, is utilized as background gas to achieve the required oxygen composition for the as-grown film. Mass spectrometry combined with time- and space resolved emission spectroscopy is used to investigate the behavior and evolution of plasma species in the plasma plume during the ablation process of LuMnO3 dependent on the background gas.