Thickness dependency of the structure and laser irradiation stability of filtered cathodic vacuum arc grown carbon films for heat assisted magnetic recording overcoat

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Thickness dependency of the structure and laser irradiation stability of filtered cathodic vacuum arc grown carbon films for heat assisted magnetic recording overcoat
Title:
Thickness dependency of the structure and laser irradiation stability of filtered cathodic vacuum arc grown carbon films for heat assisted magnetic recording overcoat
Journal Title:
Surface and Coatings Technology
Publication Date:
15 December 2013
Citation:
M. Shakerzadeh, Y. Ma, M. Tadayon, R. Ji, H.S. Tan, B.K. Tay, Thickness dependency of the structure and laser irradiation stability of filtered cathodic vacuum arc grown carbon films for heat assisted magnetic recording overcoat, Surface and Coatings Technology, Volume 236, 15 December 2013, Pages 207-211, ISSN 0257-8972, http://dx.doi.org/10.1016/j.surfcoat.2013.09.048. (http://www.sciencedirect.com/science/article/pii/S0257897213009092) Keywords: Amorphous carbon; Overcoat; Bonding structure; Laser irradiation; Raman spectroscopy
Abstract:
The thickness dependency of the bonding structure and laser irradiation stability of filtered cathodic vacuum arc grown carbon films have been studied. When the thickness is lower than 10 nm, the bonding structure of the films strongly depends on the film thickness. Decreasing the film thickness increases the sp2 content of the film which can be explained by the subplantation theory. The laser irradiation stability of the films is also related to the film thickness as well as the irradiation frequency and power. Higher irradiation power and frequencies result in more severe graphitization due to higher temperature and accumulative heating respectively. Thicker films are also shown to be more stable upon laser irradiation.
License type:
Publisher Copyrights
Funding Info:
Description:
ISSN:
0257-8972
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