A magnetic recording medium is formed by depositing a layer of a cobalt-platinum magnetic alloy (which may also contain chromium) on a non-magnetic underlayer consisting of tungsten, molybdenum, niobium or vanadium. The magnetic alloy has a higher coercivity than when deposited on a chromium underlayer. The coercivity of the magnetic alloy becomes even higher when the substrate is maintained within such a temperature range during deposition of the magnetic alloy that an intermetallic compound of cobalt and the metal of the underlayer is formed at the interface between the magnetic alloy layer and the underlayer.
申请公布号
DE3781712(T2)
申请公布日期
1993.04.01
申请号
DE19873781712T
申请日期
1987.02.24
申请人
INTERNATIONAL BUSINESS MACHINES CORP., ARMONK, N.Y., US
发明人
AHLERT, RICHARD HENRY, SAN JOSE CALIFORNIA 95122, US;HOWARD, JAMES KENT, MORGAN HILL CALIFORNIA 95037, US;LIM, GRACE SU, SAN JOSE CALIFORNIA 96825, US