Seagate Technology Incorporated

Steven B Slade

Dallas W Meyer

Zine-Eddine Boutaghou

Daniel Paul Burbank

Brian S Zak

David James Larson

Nathan Curland

Declan Macken

Eric Walter Singleton

Venkateswara R Inturi

Paul E Anderson

Ibro Tabakovic

Mai Ghaly

Brenda Anne Everitt

Charles H Tolman

Steve C Riemer

Michael Kevin Minor

Martin Louis Plumer

Jeffery K Berkowitz

Kristin Joy Duxstad

Kenneth P Ash

William H Nunne

Patrick John Moran

Patrick C Darst

Daniel J Dummer

Huy Xuan Pham

Edward M Simpson

The magnetoresistive sensor has an MR stack and side shields formed by contacts and/or pedestals on either side of the MR stack. The materials for the contacts and pedestals are selected to be magnetically soft, electrically conductive and have a low AMR signal. The contacts and pedestals are magnetically decoupled from the hard bias materials by placement of spacers.

Side shielded current in plane spin-valve

A transducing head has a magnetoresistive sensor, a first bias element, and a second bias element. The magnetoresistive sensor is positioned between the first and second bias elements, and has a sensor width. The first bias element has a first length and the second bias element has a second length. The direction of the first and second lengths are substantially similar to the direction of the sensor width. The first and second lengths in the range of about one-tenth to about twenty times the sensor width.

Magnetoresistive read sensor with short permanent magnets

A slider includes a magnetic head having first and second magnetic poles separated by a gap. A recess in the air-bearing surface extends into at least the first magnetic pole and has a first portion having a length parallel to the gap length to define a gap width orthogonal to the gap length. The first portion of the recess has a curved depth defining a curved profile along its length. In one embodiment, the recess has a second portion having a length orthogonal to the gap length and a depth defining a curved profile along its length.

Curved trim profile for ABS trimmed inductive heads

A magnetic recording head has a magnetic pole tip and a seed layer upon which the magnetic pole tip is formed. The seed layer is preferably formed of a high magnetic moment material having a saturation magnetization of at least 1.8 Tesla and a high resistance to corrosion. In preferred embodiments of the present invention, the seed layer is preferably formed of 2.1 Tesla Fe Co Ni , 1.8 Tesla Fe Ni Co Tesla Fe Cr , or 1.9 Tesla Fe Co Cr , wherein the subscripts indicate a preferred range of atomic percentages for each element in the given alloy.

High magnetic moment seed layer materials for writer pole tips

A method of fabricating a magnetoresistive (MR) proximity head slider having substantial immunity to thermal asperities includes providing the head slider having an inductive write transducer and an MR read transducer each extending to a first region of an air bearing surface (ABS) of the head slider. The method further includes removing a portion of the first region of the ABS corresponding to the MR read transducer to form a cavity in the ABS. The cavity in the ABS provides a second region of the ABS such that after removal of the portion of the first region the MR read transducer extends only to the second region of the ABS.

magnetoresistive proximity concept head slider

Smooth topography head surface on a head with patterned pole

A proximity magnetoresistive head slider and method of making the same are disclosed. The head slider includes a slider body having an air bearing surface (ABS). An inductive write transducer is formed at a first portion of the ABS. A cavity is formed in the slider body such that a first surface of the cavity forms a second portion of the ABS which is out of plane with the first portion of the ABS. A magnetoresistive (MR) read transducer is positioned in the cavity at the first surface such that the MR read transducer is recessed relative to the inductive write transducer, thereby preventing contact between the MR read transducer and a surface of a disc.

Proximity head slider having recessed magnetoresistive read transducer

A writer portion of a recording head is disclosed. The writer portion includes a lower magnetic pole. An oxide gap is positioned on the lower magnetic pole. A first insulating layer is positioned on a first portion of the gap oxide, the first insulator layer having a planarized top surface. A plurality of intermediate insulating layers are positioned on top of the first insulating layer. Each intermediate insulating layer encapsulates a layer of conductive coils and has a planarized top surface. A last insulating layer is positioned on top of a portion of the plurality of intermediate insulating layers and on top of a second portion of the gap oxide. An upper magnetic pole is positioned on top of the last insulating layer and on top of a third portion of the gap oxide.

Magnetic recording head using a last insulator to obtain an adjustable

A thin-film head electromagnetic transducer has two pole pieces which define a gap. The surface of at least one of the pole pieces has a linear edge defining one side of the gap and has two linear edges which are at an acute angle to the linear edge defining the gap and are symmetric about and abut at an axis perpendicular to the linear edge defining the gap.

Method of making a thin-film transducer design for undershoot reduction

A thin-film head has patterned pole tips and a smooth interface surface topography which eliminates the accumulation of foreign material around the pole tips.

Method of making a smooth topography head/disk interface surface on a

Thin-film transducer design for undershoot reduction

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New Hope, MN, United States of America

Steven B Slade