JPH039534B

PURPOSE:To provide high corecive force of high reliability necessary for high density recording by using Co-deposited iron oxide contg. specified amounts of Co and Fe in the surface layers of the gamma-Fe2O3 particles contg. Co ions in the surface layers in the form of cobalt ferrite. CONSTITUTION:W...

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Bibliographische Detailangaben
1. Verfasser:	HASHIMOTO TOSHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PHYSICS POLISHES USE OF MATERIALS THEREFOR WOODSTAINS
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Beschreibung
Zusammenfassung:	PURPOSE:To provide high corecive force of high reliability necessary for high density recording by using Co-deposited iron oxide contg. specified amounts of Co and Fe in the surface layers of the gamma-Fe2O3 particles contg. Co ions in the surface layers in the form of cobalt ferrite. CONSTITUTION:When a magnetic disk contg. magnetic iron oxide powder is manufactured by coating, Co-deposited iron oxide contg. 1-2.5wt% Co and