Seagate Technology Incorporated

Taras Grigorievich Pokhil

Victor Sapozhnikov

Mohammed Shariat Ullah Patwari

Eric Walter Singleton

Konstantin Nikolaev

David A Deen

Mohammed Patwari

Andrzej Adam Stankiewicz

Yonghua Chen

Jae-Young Yi

Vasudevan Ramaswamy

Xilin Peng

Victor Sapazhnikov

Nurul Amin

Olle Gunnar Heinonen

Jason Bryce Gadbois

Ned Tabat

Janusz Josef Nowak

Jae-Young Li

Zheng Gao

Michael Allen Seigler

Wenzhong Zhu

Lei Wang

Shaoping Li

Sining Mao

Edward Stephens Murdock

Brenda Anne Everitt

Anthony M Mack

Martin Louis Plumer

Jumna P Ramdular

Steven Paul Bozeman

David R Kaiser

Janusz Jozef Nowak

Rick Michel

Dean C Palmer

Ananth Naman

Jin Li

Mohammend Patwari

Timothy Radke

A reader of a magnetic recording head includes a sensor stack, a first side shield and a second side shield disposed on opposite sides of the sensor stack in a cross-track dimension, and a bridge. The bridge is configured to align magnetic moments of the first side shield and the second side shield. The bridge is disposed above the sensor stack relative to a media-facing surface of the magnetic recording head and proximate to the first side shield and the second side shield.

Magnetic storage reader having a bridge to align magnetic moments

A reader includes a bearing surface and a free layer having a front surface that forms a portion of the bearing surface. The reader also includes a synthetic antiferromagnetic (SAF) structure below the free layer, the SAF structure has a narrow portion with a front surface that forms a portion of the bearing surface and a wide portion behind the narrow portion. The reader further includes an antiferromagnetic (AFM) layer in contact with the wide portion of the SAF structure. The SAF structure is configured to prevent switching from one magnetic state to another magnetic state in the wide portion under thermal fluctuations.

Reader with wide synthetic antiferromagnetic structure optimized for high stability and low noise

A reader having a sensor stack and a top shield above the sensor stack. The top shield has an upper surface and a lower surface. The reader also includes at least one side shield below the top shield and adjacent to the sensor stack. The reader further includes a decoupling layer between the upper surface of the top shield and the at least one side shield. The decoupling layer is configured to decouple a first portion of the at least one side shield, proximate to the sensor stack, from at least a portion of the top shield.

Reader with side shields decoupled from a top shield

A recording head that includes a reader having a front end at a bearing surface of the recording head and a rear end behind the bearing surface. The reader has a non-rectangular shape with a front-end width that is less than an average width of the reader. A first bias element is positioned proximate to a first side of the reader, and a second bias element is positioned proximate to a second side of the reader. Each of the first and second bias elements has a bias level that is a function of a ratio of the front-end width to the average width of the reader.

Reader with shape optimized for higher SNR

A method of forming a read head. The method includes forming first and second read sensors that are substantially trapezoidal in shape. A first read measurement is performed on a storage medium using the first read sensor. A second read measurement is performed on the storage medium using the second read sensor. Based on a comparison of the first and second read measurements to a predetermined quantity, either the first read sensor or the second read sensor is selected to be operational in a data storage device.

Selectable readers for better performance

A method of forming a read head. The method includes forming first and second read sensors. A first read measurement is performed on a storage medium using the first read sensor. A second read measurement is performed on the storage medium using the second read sensor. Based on a comparison of the first and second read measurements to a predetermined quantity, either the first read sensor or the second read sensor is selected to be operational in a data storage device.

Selectable readers for improvements in yield, reliability and performance

Implementations described and claimed herein include a method for manufacturing monolithically-integrated on-slider hybridized electronics for magnetic read/write. The method includes forming a slider body, excising a void in a surface of the slider body, monolithically integrating an electronic block into the void of the slider body, polishing the surface of the slider body, and depositing functional layers on the surface of the slider body. By integrating electronics in close proximity to transducers, operational performance and functionality may be gained.

Monolithically-integrated hybridized slider electronics for magnetic read/write

A data reader may be configured with at least a detector stack positioned on an air bearing surface and consisting of a spin accumulation channel continuously extending from the air bearing surface to an injector stack. The injector stack can have at least one cladding layer contacting the spin accumulation channel. The at least one cladding layer may have a length as measured perpendicular to the ABS that filters minority spins from the detector stack.

Data reader with spin filter

Various embodiments of a magnetic stack are disclosed. In one or more embodiments, the magnetic stack includes first and second shield layers, and a magnetically responsive lamination disposed between the first and second shield layers. The magnetically responsive lamination can be configured to receive a sense current Itherethrough. The magnetic stack also includes a cooling element disposed between the first and second shield layers and thermally coupled to the magnetically responsive lamination. The cooling element can be configured to receive a bias current Itherethrough. And the cooling element can be configured to cool the magnetically responsive lamination during a read function.

Magnetic stack including cooling element

Implementations described and claimed herein provide a system comprising an external magnetic field generator, wherein the external field magnetic field generator is configured to rock an effective annealing magnetic field between a first positive angle and a second negative angle compared to a desired pinning field orientation in an AFM/PL structure.

Magnetic sensor annealing using a rocking field

Growing community of inventors

Arden Hills, MN, United States of America

Taras Grigorievich Pokhil