Raman and resistivity investigations of carbon overcoats of thin-film media: Correlations with tribological properties

Journal Article · Mon Apr 15 04:00:00 EDT 1991 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.347909· OSTI ID:5616594

Marchon, B; Heiman, N; Khan, M R ^[1]; Lautie, A ^[2]; Ager, III, J W; Veirs, D K ^[3]

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1. Seagate Magnetics, Fremont, California 94538 (USA)
2. LASIR-CNRS, 94320 Thiais, (France)
3. Center for Advanced Materials, Lawrence Berkeley Laboratory, Berkeley, California 94720 (USA)

Tribological measurements have been performed on a series of carbon films deposited on untextured 95-mm magnetic disks by magnetron sputtering. Raman spectra and resistivity data of these films have been correlated to friction and wear performance. Tribochemical wear, as estimated by the rate of frictional buildup, is correlated to the {ital G}-band position in the Raman spectrum. Abrasive wear is best correlated to the {ital I}({ital D})/{ital I}({ital G}) intensity ratio of the {ital D} and {ital G} bands, as well as to electrical resistivity. Interpretation of these data using structural models of amorphous carbon films is discussed.

• OSTI ID: 5616594
• Journal Information: Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 69:8; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
AMORPHOUS STATE
CARBON
CORRELATIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
FILMS
MAGNETIC DISKS
MAGNETIC STORAGE DEVICES
MEMORY DEVICES
NONMETALS
PHYSICAL PROPERTIES
RAMAN EFFECT
SPUTTERING
STRUCTURAL MODELS
TRIBOLOGY