Magnetic recording medium containing a Cr(HfO.sub.2) or Cr(ZrO.s

Details Magnetic recording medium containing a Cr(HfO.sub.2) or Cr(ZrO.s Magnetic recording medium containing a Cr(HfO.sub.2) or Cr(ZrO.s

1998-09-25

2000-10-31

Kiliman, Leszek

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428336, 428694T, 428694TS, 428694ST, 428900, G11B 566

Patent

active

061399507

ABSTRACT:
The Hr and SNR of a magnetic recording medium are increased by employing an underlayer containing Cr or a Cr alloy with HfO.sub.2 or ZrO.sub.2 dispersed therein. Embodiments include a composite underlayer comprising a first Cr or Cr alloy underlayer containing about 0.1 to about 20 at. % dispersed HfO.sub.2 or ZrO.sub.2 and a second underlayer comprising Cr or a Cr alloy, e.g. CrV, thereon.

REFERENCES:
patent: 4828905 (1989-05-01), Wada
patent: 4898774 (1990-02-01), Yamashita
patent: 5456978 (1995-10-01), Lal
patent: 5700593 (1997-12-01), Okumura
patent: 5800931 (1998-09-01), Lee
patent: 5939202 (1999-08-01), Ataka
patent: 5985673 (1999-11-01), Xiong

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