Charles Michael Potter

US Patent:

6433973, Aug 13, 2002

Filed:

Apr 25, 2000

Appl. No.:

09/557353

Inventors:

Shaoping Li - Naperville IL
Charles Dominic Potter - Bloomington MN

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 539

US Classification:

36032411, 36032412

Abstract:

A magnetoresistive sensor including spin valve sensor layers, an air bearing surface perpendicular to a first edge region common to the spin valve sensor layers, and a non-planar surface perpendicular to a second edge region common to the spin valve sensor layers and opposite the air bearing surface. The invention also features a method for producing a magnetoresistive sensor. The method includes forming a plurality of spin valve sensor layers, wherein an air bearing surface including a plane perpendicular to a first edge region common to the spin valve sensor layers is formed. Furthermore, a non-planar surface including a plane perpendicular to a second edge region common to the spin valve sensor layers, and opposite the air bearing surface is formed.

US Patent:

6641935, Nov 4, 2003

Filed:

Sep 20, 2001

Appl. No.:

09/956052

Inventors:

Shaoping Li - Naperville IL
Charles Potter - Bloomington MN
Dean Palmer - Minneapolis MN
Philip Steiner - Los Altos CA

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 566

US Classification:

428694TS, 428694 TM, 428336, 428611, 428900

Abstract:

A low noise, high areal recording density, perpendicular magnetic recording medium, comprises: (a) a non-magnetic substrate having a surface with a layer stack formed thereon, the layer stack comprising, in overlying sequence from the substrate surface: (b) a soft magnetic underlayer comprised of a soft magnetic multilayer superlattice structure; and (c) a perpendicularly anisotropic, hard magnetic recording layer. Embodiments of the invention include providing the soft magnetic multilayer superlattice structure in the form of n stacked soft magnetic/non-magnetic layer pairs, where n is an integer between about 2 and about 9.

US Patent:

6760181, Jul 6, 2004

Filed:

Dec 13, 2001

Appl. No.:

10/021158

Inventors:

Shaoping Li - Naperville IL
Charles Potter - Bloomington MN
Wenzhong Zhu - Richfield MN
Tom Rasmussen - Kasson MN

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 2102

US Classification:

360 75

Abstract:

A microactuating suspension assembly used for a disc drive is disclosed. The microactuating suspension assembly has a suspension load beam and a microactuator placed on the suspension load beam for bending the suspension load beam at the front end thereof during a sustained period of data read/write time and thus achieving a desired average fly-height which is different from an unaltered average fly-height which would have been achieved without the microactuator. In particular, the microactuating suspension assembly can be used to achieve a very low fly-height. Additionally, very large bandwidth and very short seeking time is made possible when a bimorph piezoelectric microactuator is used.