Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head
Reexamination Certificate
2006-08-08
2006-08-08
Watko, Julie Anne (Department: 2653)
Dynamic magnetic information storage or retrieval
Head
Magnetoresistive reproducing head
C360S322000
Reexamination Certificate
active
07088562
ABSTRACT:
A magnetic head including an electrical lead layer that is comprised of a material having an ordered crystalline structure. In a preferred embodiment, the ordered crystalline structure of the electrical lead is epitaxially matched to the crystalline structure of the hard bias layer upon which it is formed, and there is no need for a seed layer for the electrical leads. Electrical leads having an ordered crystalline structure, particularly a B2, L10, L11, L12and D03structure, will have significantly reduced resistivity over the prior art electrical leads that are typically composed of rhodium or tantalum. As a result, thinner electrical leads can be fabricated which carry the same, or even greater, current than the prior art rhodium or tantalum leads. The preferred leads are comprised of NiAl having a B2 crystalline structure, and alternative embodiments are comprised of CuAu, Cu3Au, Ni3Al and Fe3Al.
REFERENCES:
patent: 4639806 (1987-01-01), Kira et al.
patent: 5993956 (1999-11-01), Lambeth et al.
patent: 6077603 (2000-06-01), Zhang
patent: 6185081 (2001-02-01), Simion et al.
patent: 6219207 (2001-04-01), Pinarbasi
patent: 6417999 (2002-07-01), Knapp et al.
patent: 6632474 (2003-10-01), Horng et al.
patent: 2001/0033949 (2001-10-01), Abarra et al.
Muller, Stefan. “Bulk and Surface Ordering Phenomena in Binary Metal Alloys”. J. Phys. Condens. Matter v. 15 (2003) pp. 1429-1430 and 1478.
Schirmer, B. “Exploring the limits of functional modification of thin magnetic films”, Forschungszentrum Julich (Hannover, Germany: TIB Hannover) Mar. 1999.
Parker Michael Andrew
Pinarbasi Mustafa Michael
Guillot, Esq. Robert O.
Hitachi Global Storage Technologies - Netherlands B.V.
Intellectual Propety Law Offices
Watko Julie Anne
LandOfFree
Electrical lead structures having crystalline structures... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrical lead structures having crystalline structures..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical lead structures having crystalline structures... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3633943