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Title: Tribological Studies of Ultra-Thin Films at Head/Media Interface for Magnetic Data Storage Systems
Keywords: Magnetic Recording, Tribology, Ultrathin Film, Coating
Issue Date: 17-Aug-2012
Citation: EHSAN RISMANI-YAZDI (2012-08-17). Tribological Studies of Ultra-Thin Films at Head/Media Interface for Magnetic Data Storage Systems. ScholarBank@NUS Repository.
Abstract: The main goal of this work is to develop ultrathin wear-resistant overcoats to improve the tribological performance of the next generation of magnetic recording systems (hard disk drives (HDDs) and magnetic tape drives) with extremely high data storage capacity. Tetrahedral amorphous carbon (ta-C) films developed by filtered cathodic vacuum arc (FCVA) were used as the key material. Different surface treatment (modification) techniques were developed to improve wear resistance of the ta-C coatings while keeping their thickness within an acceptable range (<10nm for the tape drive heads and <1 nm for HDD magnetic media). Using these surface treatment techniques, the overcoat was chemically bonded to the surface of the recording head. This remarkably enhanced the durability of the overcoat compared to that of conventional coatings. In addition, effect of different environmental conditions was studied on the tribological performance of the developed coatings. Surface modification of the media led to better wear performance in comparison with the existing commercial hard disk and tape media.
Appears in Collections:Ph.D Theses (Open)

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