Characteristics of dual lubricant layers

Lubricant characteristics of dual lubricant layers, which consist of a first-lubricant bonded layer and second-lubricant mobile layer, were studied. The interface durability is evaluated by a pin-on-disk test. The spin-migration characteristic is evaluated based on the change in thickness of layers...

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Veröffentlicht in:	IEEE transactions on magnetics 2003-09, Vol.39 (5), p.2489-2491
Hauptverfasser:	Katano, T., Oka, M., Nakazawa, S., Aramaki, T., Kusakawa, K.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Bonding Dip coating Disk recording Electronics Exact sciences and technology Hard disks Lubricants Magnetic and optical mass memories Magnetic heads Magnetic liquids Magnetism Optical recording Other magnetic recording and storage devices (including tapes, disks, and drums) Storage and reproduction of information Surface resistance Testing
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Beschreibung
Zusammenfassung:	Lubricant characteristics of dual lubricant layers, which consist of a first-lubricant bonded layer and second-lubricant mobile layer, were studied. The interface durability is evaluated by a pin-on-disk test. The spin-migration characteristic is evaluated based on the change in thickness of layers after disk spinning. The mobility is estimated from spreading profiles from the lubricant step. Dual lubricant layers , which consists of Z-dol as a mobile layer and Z-tetraol or AM as a bonded layer, shows high mobility, high interface durability, and low spin-migration performance. It is considered that these characteristics can be attributed to higher interaction between the bonded lubricant and the mobile lubricant due to strong polar end groups of the bonded lubricant.
ISSN:	0018-9464 1941-0069
DOI:	10.1109/TMAG.2003.816449