Journal ArticleDOI
Stoichiometry distribution of thin films deposited by laser ablation: Monte Carlo simulation
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TLDR
In this paper, an expansion of a bi-component laser plume into a dilute background gas is simulated using a combined Monte Carlo simulation method, and the effects of different types of collisions taking place during the transport of the ablated species on their distributions when arriving at a flat substrate are shown.Abstract:
An expansion of a bi-component laser plume into a dilute background gas is simulated using a combined Monte Carlo simulation method. The effects of different types of collisions taking place during the transport of the ablated species on their distributions when arriving at a flat substrate are shown. Furthermore, we demonstrate that the film thickness distributions of both components and, hence, the final stoichiometry distribution, depend strongly on the incorporation probability of the species. This probability is expressed as a function of both deposited particle energy and the substrate absorbing properties. These studies can facilitate the comparison of the simulation results with experiments and are of particular interest for pulsed laser deposition (PLD) of multicomponent materials.read more
Citations
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Journal ArticleDOI
Internal structure and expansion dynamics of laser ablation plumes into ambient gases
TL;DR: In this paper, the effect of ambient gas on the expansion dynamics of the plume generated by laser ablation of an aluminum target has been investigated using frequency doubled radiation from a Q-switched Nd:YAG laser.
Journal ArticleDOI
Physical aspects of the pulsed laser deposition technique: The stoichiometric transfer of material from target to film
TL;DR: In this article, the physical processes of pulsed laser deposition (PLD) change strongly from the initial light absorption in a target to the final deposition and growth of a film, and the importance of these processes during the entire PLD process is discussed.
Journal ArticleDOI
Stoichiometry of alloy nanoparticles from laser ablation of PtIr in acetone and their electrophoretic deposition on PtIr electrodes.
Jurij Jakobi,Ana Menéndez-Manjón,Venkata Sai Kiran Chakravadhanula,Lorenz Kienle,Philipp Wagener,Stephan Barcikowski +5 more
TL;DR: Charged Pt-Ir alloy nanoparticles are generated through femtosecond laser ablation of a Pt₉Ir target in acetone without using chemical precursors or stabilizing agents, allowing modification of the surface roughness without changing the chemical composition of PtIr.
Journal ArticleDOI
Growth regimes in pulsed laser deposition of aluminum oxide films
F. Di Fonzo,Diego Tonini,A. Li Bassi,Carlo Spartaco Casari,Marco Beghi,Carlo Enrico Bottani,Dario Gastaldi,Pasquale Vena,Roberto Contro +8 more
TL;DR: In this paper, the relationship between the process parameters and the resulting film morphology, structure and properties for PLD performed with an alumina target in a background oxygen atmosphere is investigated, and three distinct growth regimes are found, leading to compact homogeneous films, columnar structures and open microstructures.
Journal ArticleDOI
Effects of atomic collisions on the stoichiometry of thin films prepared by pulsed laser deposition.
TL;DR: This model is the first analytic model of collision-induced plume expansion that can explain the partial oxygen pressure dependence of the Li content of a thin film.
References
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Book
Molecular Gas Dynamics and the Direct Simulation of Gas Flows
TL;DR: The direct simulation Monte Carlo (or DSMC) method has, in recent years, become widely used in engineering and scientific studies of gas flows that involve low densities or very small physical dimensions as mentioned in this paper.
Book ChapterDOI
Pulsed laser deposition of thin films
TL;DR: Pulsed laser deposition of high-temperature superconducting thin films for active and passive device applications is discussed in this article, with a focus on the commercial scale-up of Pulsed Laser Deposition.
Journal ArticleDOI
Preparation of Y‐Ba‐Cu oxide superconductor thin films using pulsed laser evaporation from high Tc bulk material
D. Dijkkamp,Thirumalai Venkatesan,X. D. Wu,S. A. Shaheen,Najeh Jisrawi,Y. H. Min‐Lee,W. L. McLean,Mark Croft +7 more
TL;DR: In this paper, the first successful preparation of thin films of Y-Ba-Cu-O superconductors using pulsed excimer laser evaporation of a single bulk material target in vacuum was reported.
Journal ArticleDOI
On the origin of spatial nonuniformities in the composition of pulsed-laser-deposited films
TL;DR: In this article, a model for the origin of spatial nonuniformities in the composition of pulsed laser-deposited films derived from multicomponent targets is proposed based on the idea that the forward peaking of each species in the plume depends on the species mass via the ratio of two mass-dependent velocities: the flow velocity and the mean random thermal velocity.
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