METHOD FOR MANUFACTURING MAGNETIC DISK

PROBLEM TO BE SOLVED: To provide a magnetic disk which can further reduce magnetic spacing, is excellent in the durability thereof, especially in a glide characteristic and LUL durability, and has a high reliability under an ultra-low floating height of a magnetic head resulting from a recent rapid...

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Bibliographische Detailangaben
Hauptverfasser:	ITO KAE, SHIMOKAWA KOICHI, HAMAKUBO MASASHI
Format:	Patent
Sprache:	eng
Schlagworte:	INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a magnetic disk which can further reduce magnetic spacing, is excellent in the durability thereof, especially in a glide characteristic and LUL durability, and has a high reliability under an ultra-low floating height of a magnetic head resulting from a recent rapid high recording density and under a very severe environmental durability caused by use diversity.SOLUTION: In the method for manufacturing a magnetic disk obtained by sequentially forming at least a magnetic layer, a carbon-based protective layer and a lubrication layer on a substrate, a lubricant composition having a perfluoro polyether main chain in a molecular structure and containing a lubricant compound having an aromatic group or a phosphazene ring is subjected to film formation on the protective layer to form a lubrication layer, and ultraviolet light irradiation is subsequently applied to the magnetic disk by adjusting atmospheric temperature within the range of 50 to 180°C under a nitrogen gas or inert gas atmosphere in which oxygen concentration is 5 volume% or low.