In this work we report on the extensive characterization of amorphous silicon carbide (a-SiC) coat- ings prepared by physical deposition methods. Our investigation is performed within the perspective application of a-SiC as an optical material for high-precision optical experiments and, in particular, in gravitational wave interferometry. We compare the results obtained with two different sputtering systems [a standard radio frequency (rf) magnetron sputtering and an ion-beam sputtering] to grasp the impact of two different setups on the repeatability of the results. After a thorough characterization of structural, mor- phological, and compositional characteristics of the prepared samples, we focus on a detailed study of the optical and mechanical losses in those materials. Mechanical losses are further investigated from a micro- scopic point of view by comparing our experimental results with molecular dynamic simulations of the amorphous SiC structure: first we define a protocol to generate a numerical model of the amorphous film, capturing the main features of the real system; then we simulate its dynamical behavior upon deformation in order to obtain its mechanical response.

Favaro, G., Bazzan, M., Amato, A., Arciprete, F., Cesarini, E., Corso, A.j., et al. (2022). Measurement and simulation of mechanical and optical properties of sputtered amorphous SiC coatings. PHYSICAL REVIEW APPLIED, 18(4) [10.1103/PhysRevApplied.18.044030].

Measurement and simulation of mechanical and optical properties of sputtered amorphous SiC coatings

Arciprete, F.;De Matteis, F.;Lumaca, D.;Prosposito, P.;
2022-01-01

Abstract

In this work we report on the extensive characterization of amorphous silicon carbide (a-SiC) coat- ings prepared by physical deposition methods. Our investigation is performed within the perspective application of a-SiC as an optical material for high-precision optical experiments and, in particular, in gravitational wave interferometry. We compare the results obtained with two different sputtering systems [a standard radio frequency (rf) magnetron sputtering and an ion-beam sputtering] to grasp the impact of two different setups on the repeatability of the results. After a thorough characterization of structural, mor- phological, and compositional characteristics of the prepared samples, we focus on a detailed study of the optical and mechanical losses in those materials. Mechanical losses are further investigated from a micro- scopic point of view by comparing our experimental results with molecular dynamic simulations of the amorphous SiC structure: first we define a protocol to generate a numerical model of the amorphous film, capturing the main features of the real system; then we simulate its dynamical behavior upon deformation in order to obtain its mechanical response.
2022
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/03 - FISICA DELLA MATERIA
English
Con Impact Factor ISI
Favaro, G., Bazzan, M., Amato, A., Arciprete, F., Cesarini, E., Corso, A.j., et al. (2022). Measurement and simulation of mechanical and optical properties of sputtered amorphous SiC coatings. PHYSICAL REVIEW APPLIED, 18(4) [10.1103/PhysRevApplied.18.044030].
Favaro, G; Bazzan, M; Amato, A; Arciprete, F; Cesarini, E; Corso, Aj; De Matteis, F; Dao, Th; Granata, M; Honrado-Benítez, C; Gutiérrez-Luna, N; Larruquert, Ji; Lorenzin, G; Lumaca, D; Maggioni, G; Magnozzi, M; Pelizzo, Mg; Placidi, E; Prosposito, P; Puosi, F
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/310998
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