Magnetic layer and method of manufacture

Metal treatment – Stock – Magnetic

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

148312, 420 94, 420459, 2041922, C22C 1903, C22C 3808, C23C 1414, G11B 531

Patent

active

047523441

ABSTRACT:
An improved thin magnetic layer which is suitable for use in magnetic head pole piece applications and a method of manufacture therefor are disclosed. The magnetic layer is a single phase composition of NiFe and Al.sub.2 O.sub.3. The magnetic layer is manufactured by cosputtering from a single, two phase sputtering target, or from separate NiFe and Al.sub.2 O.sub.3 sputtering targets. The single phase composition results in increased abrasion resistance without degradation of the magnetic properties of the layer.

REFERENCES:
patent: 3519498 (1970-07-01), Ahn
patent: 3567525 (1971-03-01), Graham et al.
patent: 3653986 (1972-04-01), Pingel
patent: 3814598 (1974-06-01), Gabriel et al.
patent: 3843420 (1974-10-01), Gittleman et al.
patent: 4069043 (1978-01-01), Ackermann
patent: 4153453 (1979-05-01), Hart et al.
patent: 4239835 (1980-12-01), Iijima et al.
patent: 4336066 (1982-06-01), Sata et al.
patent: 4385098 (1983-05-01), Sugita et al.
patent: 4404238 (1983-09-01), Baldwin
patent: 4404263 (1983-09-01), Hodes et al.
patent: 4425400 (1984-01-01), Yamaguchi et al.
patent: 4460651 (1984-07-01), Hosaka et al.
patent: 4474848 (1984-10-01), Yamaguchi
patent: 4610911 (1986-09-01), Opter et al.
K. Y. Ahn et al., "NiFe Films Mixed with SiO.sub.2 for Improved Adhesion", IBM Technical Disclosure Bulletin, vol. 18, No. 10, 3-1976, p. 3513.
E. Kay et al., "Controlled Sputtering Process", IBM Technical Disclosure Bulletin, vol. 12, No. 9, 2-1970, p. 1356.
J. D. Heller, "Wear-Resistant Multilayer Magnetic Film", IBM Technical Disclosure Bulletin, vol. 16, No. 12, 5-1974, p. 3962.
A. J. Collins et al., "The Magnetic Properties of R.F-Sputtered Permalloy and Mumetal Films", Thin Solid Films, 86 (1981), 165-174.
Reith et al., Evaporated NiFe/Al.sub.2 O.sub.3 Structure, Aug. 1984, vol. 27, No. 3, p. 1762.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Magnetic layer and method of manufacture does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic layer and method of manufacture, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic layer and method of manufacture will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-928125

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.