High-gravity-assisted pulsed laser ablation system for the fabrication of functionally graded material thin film

Nishiyama, T.; Morinaga, S.; Nagayama, K.
March 2009
Review of Scientific Instruments;Mar2009, Vol. 80 Issue 3, p033904
Academic Journal
This paper describes a novel method for the fabrication of a thin film deposited on an appropriate substrate having a continuous composition gradient. The composition gradient was achieved by a combination of pulsed laser ablation (PLA) of the target material with a very strong acceleration field generated on a moving disk rotating at a very high speed. The PLA process was used to produce a cloud of high-energy particles of the target material that will be deposited on a substrate placed on the rotating disk. After deposition, the particles will diffuse on the surface of the thin film under a strong acceleration field. The high energy of the particles and their diffusion on the substrate surface in a high-vacuum environment produces a macroscopic composition distribution in the thin film. We have constructed an experimental apparatus consisting of a vacuum chamber in which a circular disk made of titanium is driven by a high-frequency inductive motor. An acceleration field of up to 10 000 G can be generated by this apparatus. Functionally graded material thin films of FeSi2 with a continuous concentration gradient were successfully fabricated by this method under a gravity field of 5400 G. A significant advantage of this method is that it allows us to fabricate graded thin films with a very smooth surface covered by few droplets.


Related Articles

  • Critical Temperature Enhancement by Biaxial Compressive Strain in FeSeTe Thin Films. Bellingeri, E.; Pallecchi, I.; Buzio, R.; Gerbi, A.; Marrè, D.; Cimberle, M. R.; Tropeano, M.; Putti, M.; Palenzona, A.; Kaciulis, S.; Ferdeghini, C. // Journal of Superconductivity & Novel Magnetism;Feb2011, Vol. 24 Issue 1/2, p35 

    High-purity epitaxial FeSeTe thin films with different thicknesses were grown by pulsed laser ablation on different substrates. By varying the film thickness, T values of up to 21 K were observed, significantly larger than the bulk value. Structural analyses indicated that the a axis changes...

  • Liquid-phase deposition and the properties of thin zirconium dioxide films on different substrates. Silickas, P.; Valiulis, A. // Materials Science;Mar2008, Vol. 44 Issue 2, p211 

    In recent years, the interest of the researchers to the methods of synthesis of inorganic thin oxide films from low-temperature liquid solutions permanently increases. This is explained by the recent achievements in the technology of deposition of the films, including, in particular, chemical...

  • Laser ablation of thin molybdenum films on transparent substrates at low fluences. Heise, Gerhard; Englmaier, Marina; Hellwig, Christian; Kuznicki, Thomas; Sarrach, Sebastian; Huber, Heinz // Applied Physics A: Materials Science & Processing;Jan2011, Vol. 102 Issue 1, p173 

    The selective structuring of thin molybdenum (Mo) films is a major challenge for the monolithic interconnection of CIS thin film solar cells during their production. Here we present the structuring of ca. 0.5 μm thin molybdenum films on glass substrates with picosecond laser pulses (pulse...

  • Combinatorial pulsed laser deposition of Fe/MgO granular multilayers. García-García, A.; Pardo, J.; Navarro, E.; Štrichovanec, P.; Vovk, A.; Morellón, L.; Algarabel, P.; Ibarra, M. // Applied Physics A: Materials Science & Processing;Jun2012, Vol. 107 Issue 4, p871 

    Combinatorial pulsed laser deposition (PLD) makes use of the angular spread of laser-ablated material to prepare thin films with lateral compositional gradient. In this paper we have used combinatorial PLD to grow discontinuous Fe/MgO multilayers by alternate ablation from two separate Fe and...

  • Ultra-fast movies of thin-film laser ablation. Domke, Matthias; Rapp, Stephan; Schmidt, Michael; Huber, Heinz // Applied Physics A: Materials Science & Processing;Nov2012, Vol. 109 Issue 2, p409 

    Ultra-short-pulse laser irradiation of thin molybdenum films from the glass substrate side initiates an intact Mo disk lift off free from thermal effects. For the investigation of the underlying physical effects, ultra-fast pump-probe microscopy is used to produce stop-motion movies of the...

  • Laser-induced ablation dynamics and flight of thin polymer films. Frank, P.; Shaw-Stewart, J.; Lippert, T.; Boneberg, J.; Leiderer, P. // Applied Physics A: Materials Science & Processing;Aug2011, Vol. 104 Issue 2, p579 

    We investigated the ejection dynamics of triazene polymer layers in the thickness range of 40 nm to 600 nm upon nanosecond laser ablation at a wavelength of 532 nm. The ablation is due to laser-induced thermal degradation of a small part of the polymer in contact with the silicon substrate. The...

  • Correlation of plume dynamics and oxygen pressure with VO stoichiometry during pulsed laser deposition. Lafane, S.; Kerdja, T.; Abdelli-Messaci, S.; Khereddine, Y.; Kechouane, M.; Nemraoui, O. // Applied Physics A: Materials Science & Processing;Jul2013, Vol. 112 Issue 1, p159 

    Vanadium dioxide thin films have been deposited on Corning glass substrates by a KrF laser ablation of VO target at the laser fluence of 2 J cm. The substrate temperature and the target-substrate distance were set to 500 C and 4 cm, respectively. X-ray diffraction analysis showed that pure VO is...

  • UV laser ablation of parylene films from gold substrates. Musaev, O. R.; Scott, P.; Wrobel, J. M.; Wolf, J. A.; Kruger, M. B. // Journal of Materials Science;Jan2011, Vol. 46 Issue 1, p183 

    Parylene coatings on gold substrates were removed by laser ablation using 248-nm light from an excimer laser. Each sample was processed by a different number of pulses in one of three environments: air at atmospheric pressure, nitrogen at atmospheric pressure, and vacuum. The laser-induced...

  • Femtosecond laser ablation-based mass spectrometry: An ideal tool for stoichiometric analysis of thin films. LaHaye, Nicole L.; Kurian, Jose; Diwakar, Prasoon K.; Alff, Lambert; Harilal, Sivanandan S. // Scientific Reports;8/21/2015, p13121 

    An accurate and routinely available method for stoichiometric analysis of thin films is a desideratum of modern materials science where a material's properties depend sensitively on elemental composition. We thoroughly investigated femtosecond laser ablation-inductively coupled plasma-mass...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics