Co-Fe-BASED ALLOY FOR SOFT MAGNETIC FILM, SOFT MAGNETIC FILM, AND PERPENDICULAR MAGNETIC RECORDING MEDIUM

PROBLEM TO BE SOLVED: To provide a Co-Fe-based alloy for soft magnetic films used in perpendicular magnetic recording media, etc., which maintains high soft magnetic properties and has excellent weather resistance. SOLUTION: The Co-Fe-based alloy has a composition, by atomic ratio, expressed by a fo...

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Hauptverfasser:	FUKUOKA ATSUSHI, FUJIMOTO MITSUHARU, UENO SUGURU, UENO TOMONORI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER METALLURGY PHYSICS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a Co-Fe-based alloy for soft magnetic films used in perpendicular magnetic recording media, etc., which maintains high soft magnetic properties and has excellent weather resistance. SOLUTION: The Co-Fe-based alloy has a composition, by atomic ratio, expressed by a formula: ((Co100-x-Fex)100-Y-NiY)100-(a+b+c)-M1a-M2b-Tic(wherein 5≤X≤80; 0≤Y≤25; 2≤a≤6; 2≤b≤10; and 0.5≤c≤10), with the remainder being unavoidable impurities. In the Co-Fe-based alloy, the element M1 in the formula is one or more elements selected from (Zr, Hf, Y), and the element M2 is one or more elements selected from (Ta, Nb). COPYRIGHT: (C)2011,JPO&INPIT