MAGNETIC DISK DEVICE

PURPOSE:To obtain the magnetic disk device of high reliability provided with a ferrite head by using a zirconium oxide film of 100 to 1,000Angstrom thickness contg. 2 to 6mol% ytrrium oxide as the protective film of a magnetic recording medium layer to the ferrite head. CONSTITUTION:An underlying la...

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Bibliographische Detailangaben
Hauptverfasser:	NISHINAKAGAWA ISATO, YABUSHITA KOUJI, KUROSAI KAYOKO, MORITA TOMOJI
Format:	Patent
Sprache:	eng
Schlagworte:	INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER PHYSICS
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain the magnetic disk device of high reliability provided with a ferrite head by using a zirconium oxide film of 100 to 1,000Angstrom thickness contg. 2 to 6mol% ytrrium oxide as the protective film of a magnetic recording medium layer to the ferrite head. CONSTITUTION:An underlying layer 2 and the magnetic recording medium 3 are successively formed on a substrate 1 and the zirconium oxide film contg. 4mol% ytrrium oxide is formed to 500Angstrom thickness as the protective film 4 thereon. The zirconium oxide having the proper hardness and toughness is provided on the surface of the magnetic recording medium in such a manner, by which the magnetic disk device having the small friction force and attraction force between the magnetic disk and magnetic head slider and having the sufficiently high durability and reliability is obtd. for the head made by using the ferrite.