Journal
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
Volume 29, Issue 5, Pages -Publisher
A V S AMER INST PHYSICS
DOI: 10.1116/1.3607423
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TiSiN ultrathin films (10-50 angstrom) deposited by reactive magnetron sputtering from TixSiy targets were used as anticorrosion overcoats to protect Co-containing recording media. Films' growth, structure, composition, resistance against hydrolysis, and anticorrosion performances were studied by spectroscopy (x-ray reflectivity and diffraction, ellipsometry, x-ray photoelectron spectroscopy, Fourier transform infrared reflection-absorption spectroscopy) and simulated by molecular dynamics ( using modified Tersoff-type interatomic interactions). TiSiN ultrathin overcoats were found to be dense amorphous oxynitrides containing Ti-O-Si linkages. The conversion of SiNx into SiOx by hydrolysis was prevented by introducing less than 20 at. % of Ti in the films. Thanks to the formation of Ti-O-Si linkages which densify the films and reduce oxygen diffusion, good corrosion protection of the magnetic media was achieved down to 28 A TiSiN overcoat thickness. VC 2011 American Vacuum Society. [DOI: 10.1116/1.3607423] A
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