Abstract
We have studied factors influencing the formation of particles with the structure of a spherical metal W core inside a WSe2 shell during pulsed laser deposition (PLD) of thin films of tungsten diselenide under variable conditions (buffer gas (Ar) pressure, substrate temperature). It is established that the metal core is formed at the stage of laser ablation of a synthesized WSe2 target, while the shell grows as a result of condensation, migration, and redistribution of atoms during deposition of a laser-initiated atomic flow on the surface of a growing film. Retardation of the atomic flow by a buffer gas at pressures within 2–10 Pa does not ensure activation of the shell condensation process on the metal core in the gas phase. Increasing the substrate temperature from room temperature up to 250°C leads to transformation of the shell structure from amorphous into laminar.
Similar content being viewed by others
References
T. Polcar and A. Cavaleiro, Thin Solid Films 519, 4037 (2011).
X. Zhang, B. Luster, F. Church, C. Muratore, A. A. Voevodin, P. Kohli, S. Aouadi, and S. Talapatra, ACS Appl. Mater. Interfaces 1, 735 (2009).
J. J. Hu and J. S. Zabinski, Tribol. Lett. 18, 173 (2005).
R. Sen, A. Govindaraj, K. Suenaga, S. Suzuki, H. Kataura, S. Iijima, and Y. Achiba, Chem. Phys. Lett. 340, 242 (2001).
V. Yu. Fominski, S. N. Grigoriev, A. G. Gnedovets, and R. I. Romanov, Surf. Coat. Technol. 206, 5046 (2012).
V. Yu. Fominski, S. N. Grigoriev, J. P. Celis, R. I. Romanov, and V. B. Oshurko, Thin Solid Films 520, 6467 (2012).
D. V. Shtansky, T. A. Lobova, V. Yu. Fominski, S. A. Kulinich, I. V. Lyasotsky, M. I. Petrzhik, E. A. Levashov, and J. J. Moore, Surf. Coat. Technol. 183, 328 (2004).
V. Yu. Fominskii, R. I. Romanov, A. G. Gnedovets, and V. N. Nevolin, Tech. Phys. 55, 1509 (2010).
S. N. Grigoriev, V. Yu. Fominski, A. G. Gnedovets, and R. I. Romanov, Appl. Surf. Sci. 258, 7000 (2012).
V. N. Nevolin, V. Yu. Fominskii, A. G. Gnedovets, and R. I. Romanov, Tech. Phys. 54, 117 (2009).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © V.Yu. Fominski, S.N. Grigoriev, A.G. Gnedovets, R.I. Romanov, 2013, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2013, Vol. 39, No. 6, pp. 87–94.
Rights and permissions
About this article
Cite this article
Fominski, V.Y., Grigoriev, S.N., Gnedovets, A.G. et al. On the mechanism of encapsulated particle formation during pulsed laser deposition of WSe x thin-film coatings. Tech. Phys. Lett. 39, 312–315 (2013). https://doi.org/10.1134/S1063785013030206
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063785013030206