Method for preparing high density magnetic recording medium

Details Method for preparing high density magnetic recording medium Method for preparing high density magnetic recording medium

1990-10-02

1992-01-28

Nguyen, Nam X.

Chemistry: electrical and wave energy

Processes and products

Coating, forming or etching by sputtering

2041922, 2041923, C23C 1434

Patent

active

050841521

ABSTRACT:
RF sputtered CoCrTa film deposited on a thin Cr underlayer for longitudinal magnetic recording and the preparation method thereof are disclosed. The film exhibits a (1010) texture which provides a high coercivity of 1190 Oe. The high coercivity is obtained on a 200 A Cr underlayer with a low argon pressure of 4 mtorr and high substrate bias of -100 V.

REFERENCES:
patent: 4552820 (1985-11-01), Lin et al.
patent: 4824724 (1989-04-01), Ueda et al.
patent: 4865878 (1989-09-01), Nagas et al.
patent: 4900397 (1990-02-01), Werner et al.

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