Seagate Technology Incorporated

Wei Tian

Venugopalan Vaithyanathan

Insik Jin

Dimitar Velikov Dimitrov

Yuankai Zheng

Jianhua Xue

Nurul Amin

Dexin Wang

Xiaohua Lou

Xiaobin Wang

Huaqing Yin

Zheng Gao

Ming Sun

Haiwen Xi

Kirill A Rivkin

Dadi Setiadi

Venkateswara R Inturi

Youngpil Kim

Joseph Mundenar

Dong Lin

Wenzhong Zhu

Young Pil Kim

Muralikrishnan Balakrishnan

Michael C Kautzky

Mark William Covington

Qing I He

Jiaoming Qiu

Lei Lu

XiaoHong Zhang

Markus Siegert

Chulmin Jung

Brian Lee

Michael Xuefei Tang

Rodney Virgil Bowman

Ivan Petrov Ivanov

Zhe Shen

Muhammad Asif Bashir

Beverley R McConnell

Jian Zhong

Yong Lu

Song Sheng Xue

Antoine Khoueir

Mark Anthony Gubbins

Olle Gunnar Heinonen

Bin Lu

Jie Gong

Steven Carl Riemer

Andreas Karl Roelofs

Javier Ignacio Guzman

Swaraj Basu

Yongchul Ahn

Prim Gangmei

Sunita B Gangopadhyay

Yi Liu

Yong Luo

Yan Dong

Cedric Bedoya

Yang Dong

Shengzhou Liao

Yunhao Xu

Andrew James Wirebaugh

Jia Sun

Doug Lin

Edward Charles Gage

Yiran Chen

Declan Macken

Mehmet Fatih Erden

Eric Walter Singleton

Hai Li

Mark Thomas Kief

Yang Li

Harry Hongyue Liu

Jason Bryce Gadbois

Kenneth A Haapala

Yonghua Chen

Paul E Anderson

Erik Jon Hutchinson

Dian Song

Wonjoon Jung

Thomas Roy Boonstra

Ralph William Cross

John Wolf

Venkatram Venkatasamy

Mallika Kamarajugadda

Dion Song

Meng Zhu

Markus Jan Peter Siegert

Venu Vaithyanathan

Insik Jim

Gregory P Wakeham

Shen Zhe

Joe Mundenar

Hauqing Yin

Debin Wang

Xiaohong Zhang

Eliot Lewis Cuthbert Estrine

Andrew Wirebaugh

Described are electrodeposition methods, and materials and structures prepared by electrodeposition methods, and devices prepared from the electrodeposited materials.

Electrodeposited materials and related methods

A recording head includes a bearing surface, a first writer and a first shield structure for the first writer. The recording head also includes a second writer and a second shield structure for the second writer. The recording head further includes a magnetic bridge connecting the first shield structure to the second shield structure at the bearing surface.

Dual writer with bridged connection

A write head including a bearing surface and a write pole having a front surface that forms a portion of the bearing surface. The front surface has a leading edge, a trailing edge and side edges connecting the leading and trailing edges. The write head also includes side shields proximate to the side edges of the write pole, and a trailing shield over the write pole and the side shields. A trailing shield-write pole gap is present between the trailing edge and the trailing shield, and a trailing shield-side shield gap is present between the trailing shield and the side shields. The trailing shield-shield shield gap is substantially less than the trailing shield-write pole gap.

Write head with reduced side to trailing shield spacing

A write head having a write pole tip. The write pole tip includes a bearing surface and a sidewall extending from the bearing surface to a rear end of the write pole tip. The sidewall has a first shape (e.g., a straight-line sidewall shape) substantially at the bearing surface and a second shape (e.g., a multi-segment sidewall shape or a curved sidewall shape) between the bearing surface and the rear end.

Write pole with varied sidewall shape

A method includes forming a write pole layer having a front surface, a leading surface, a trailing surface and side surfaces connecting the leading surface to the trailing surface. The method also includes forming side shield layers proximate to the side surfaces of the write pole layer. A patterned sacrificial layer is deposited over the side shield layers, and a trailing surface bevel is formed on the write pole layer.

Side shield formation

A storage device includes a storage medium and a transducer head with two writers positioned to write to a same surface of the storage medium. The two writers are separated from one another along a down-track direction of a data track on the storage medium and independently controllable to write data.

Dual writer head design utilizing two writers of different sizes for writing interlaced data tracks

A write head including a bearing surface and a write pole having a front surface that forms a portion of the bearing surface. The front surface has a leading edge, a trailing edge and side edges connecting the leading and trailing edges. The write head also includes side shields proximate to the side edges of the write pole, and a trailing shield over the write pole and the side shields. A trailing shield-write pole gap is present between the trailing edge and the trailing shield, and a trailing shield-side shield gap is present between the trailing shield and the side shields. The trailing shield side shield gap is substantially less than the trailing shield-write pole gap.

Write head with reduced trailing shield&#x2014;side shield spacing

A data writer may be constructed and operated as part of a data storage device. The data writer can be positioned proximal a data storage medium. The data writer may have a write pole positioned adjacent a writer coil with the writer coil having a plurality of turns. A controller that is connected to each turn can be adapted to selectively activate less than all the coil turns in response to the data writer being positioned over a first portion of a data storage medium and selectively activate all of the coil turns in response to the data writer being positioned over a second portion of the data storage medium.

Selective data writer coil

A method includes depositing a layer of pole material on a substrate. The layer of pole material has a bottom surface that is adjacent to the substrate and a top surface that is opposite the bottom surface. A masking material is deposited over a portion of the top surface. Material from the pole material unprotected by the masking material is removed to form a write pole having first and second side walls. At least a portion of a trench formed by removal of the material from the layer of pole material is filled with a sacrificial material. The mask and a portion of the write pole at the top surface are removed to form a beveled trailing edge surface. The sacrificial material is then removed. Front shield gap material is deposited over the beveled trailing edge surface and over portions of the side walls.

Method for making a write head for magnetic recording

A write head having a main pole, a gap layer, and at least two sacrificial layers. In accordance with one embodiment, a method includes depositing a non-magnetic gap layer of material above a main pole layer of magnetic material; depositing a sacrificial layer of material above the non-magnetic gap layer of material; etching a portion of the sacrificial layer of material while not entirely removing the sacrificial layer of material; and depositing additional sacrificial material to the etched sacrificial layer.

Main pole layer with at least two sacrificial layers and a gap layer

Implementations described and claimed herein includes a storage device comprising a plurality of readers, including a first subset of readers configured to read a first subset of tracks and a second subset of readers configured to read a second subset of tracks, the first subset of tracks being wider than the second subset of tracks. In another implementation, the readers in the first subset of readers are wider than the readers in the second subset of readers. The wider readers may be configured to recover servo information and the narrow readers may be configured to recover data information. The storage devices may include two-dimensional magnetic recording, conventional perpendicular magnetic recording, shingled magnetic recording, multi-sensor magnetic recording, and interlaced magnetic recording.

Magnetic storage device readers

An apparatus has a main pole layer of magnetic material, a second layer of magnetic material, a first gap layer of non-magnetic material between the main pole layer and the second layer of magnetic material, and a second gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material. The second gap layer of non-magnetic material can be directly adjacent to the second layer of magnetic material. In accordance with one embodiment, this allows the gap to serve as a non-magnetic seed for the second layer of magnetic material. A method of manufacturing such a device is also described.

Write head having beveled non-magnetic write gap seed layer

A data writer may be configured with at least a write pole continuously extending from an air bearing surface to a via. The write pole can contact at least one yoke that contacts the write pole. The write pole and yoke may each be disposed between and separated from a write coil that has a single turn and continuously extends to opposite sides of the write pole.

Data writer with shaped write coil

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Bloomington, MN, United States of America

Wei Tian