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Proceedings Paper

Optical and mechanical properties of diamondlike carbon produced by dual ion beam sputtering technique
Author(s): Salvatore Scaglione; Francesca Sarto; Raffaele Pepe; Antonella Rizzo; Marco Alvisi
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Paper Abstract

The diamond like carbon (DLC) is very hard, inert to chemical attack and transparent in the IR region. In order to increase the transparency of DLC, the percentage of Sp3 bonds must be increased. In this work, thin film of DLC were deposited by the Dual Ion Beam Sputtering technique. An argon ion beam sputters a graphite target and a second one assists the film during the growth. A set of samples were produced at different momentum transfer varying the energy and current density of assisting ion beam and the growth rate. The momentum transfer is defined P equals nc divided by nat (root) 2 mc Ec where nc is the number of recoiling carbon atoms, mat is the number of the carbon atoms in the volume interested at the collision cascade process and Ec is the energy of the recoils after the collision with the Ar ions, nc, nat, and Ec were calculated by the TRIM program. THe optical properties as the optical gap of the samples were related to the momentum transfer value. As far as the mechanical properties were concerned, the hardness value was measured by Knoop microindentation for all samples.

Paper Details

Date Published: 7 September 1999
PDF: 8 pages
Proc. SPIE 3738, Advances in Optical Interference Coatings, (7 September 1999); doi: 10.1117/12.360129
Show Author Affiliations
Salvatore Scaglione, ENEA (Italy)
Francesca Sarto, ENEA (Italy)
Raffaele Pepe, ENEA (Italy)
Antonella Rizzo, PASTIS-CNRSM (Italy)
Marco Alvisi, PASTIS-CNRSM (Italy)

Published in SPIE Proceedings Vol. 3738:
Advances in Optical Interference Coatings
Claude Amra; H. Angus Macleod, Editor(s)

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