Seagate Technology Incorporated

Paul Max Jones

Yiao-Tee Hsia

Lei Li

James Dillon Kiely

Florin Zavaliche

Fujian Huang

Michael Joseph Stirniman

Timothy John Klemmer

Martin Giles Blaber

Xiaoding Ma

Huan H Tang

Xiaoping Yan

Yang Yang

JiPing Yang

Zhaohui Fan

Christopher Loren Platt

XiaoPing Yan

Hongbo Wang

Yukiko A Kubota

Ruoxi Yang

Earl Chrzaszcz Johns

Emil John C Esmenda

Emil John Catoc Esmenda

Emir R Kazazic

Kyoumarss Damavandi

Edward Charles Gage

Tim Rausch

Thomas Young Chang

Yuhang Cheng

Jan-Ulrich Thiele

Michael David Mundt

Philip L Steiner

Gary Edwin Bement

Mark Andrew Chapin

Bing Zhang

Minjie Ma

Brian David Denker

James Dillion Kiely

Corina Nistorica

Lang Nhu Dinh

Junwei Huang

Systems and methods for adding a cap-layer to magnetic recording media are described. In one embodiment, the method may include depositing a magnetic recording layer over a substrate, depositing an interface layer over the magnetic recording layer, and depositing a carbon overcoat layer over the interface layer. In some cases, sputter deposition is used to deposit at least the interface layer. In some cases, oxygen is used as a background gas of the sputter deposition.

Adding a cap-layer to improve magnetic recording media

A heat-assisted magnetic recording device includes a granular magnetic recording layer and a thermal absorption layer formed on top of the magnetic recording layer. The thermal absorption layer is patterned to include rows extending in a cross-track direction of the magnetic media, each adjacent pair of the rows being separated from one another by an insulating material.

Patterned thermal absorption layer for granular storage media

Systems and methods for treating a carbon overcoat surface are described. In one embodiment, the method may include depositing a magnetic recording layer over a substrate, depositing a carbon overcoat layer over the magnetic recording layer, and exposing a carbon overcoat layer to water in gas phase after the carbon overcoat layer is deposited on the magnetic recording layer. In some cases, the method may include depositing a lubricant over the outer surface of the carbon overcoat after exposing the carbon overcoat layer to the water in gas phase.

Carbon overcoat surface treatment

Systems and methods for coating a near field transducer in a dielectric material are described. In one embodiment, the method may include forming a liquid solution comprising at least a first dielectric and a disk surface lubricant, forming a coating of the liquid solution on an outer surface of a storage medium based at least in part on dipping the storage medium in the liquid solution, and accumulating a first set of molecules of the first dielectric on a near field transducer (NFT) of a HAMR head based at least in part on evaporating a first portion of the first dielectric in the coating by performing a first HAMR writing operation that shines a laser on the coating.

Coating a near field transducer with a dielectric material from magnetic recording medium

A stack includes a heatsink layer, a magnetic recording layer disposed over the heatsink layer, and a Si-based overcoat layer disposed over the magnetic recording layer. The Si-based overcoat layer is substantially devoid of carbon.

Si-based overcoat for heat assisted magnetic recording media

Data is written to data sectors of a heat-assisted magnetic recording (HAMR) medium using a laser of a HAMR head supplied with a sum of an operational current and a threshold current. A service current is supplied to the laser when the head is over servo sectors of the medium, such that a temperature of the medium at the servo sectors is greater than or equal to a temperature of the head when over the servo sectors.

Heat-assisted magnetic recording device capable of preventing contaminant on the head

An apparatus including a heat sink layer and a magnetic recording layer over the heat sink layer. In addition, a thermochromic layer is over the heat sink layer, wherein the thermochromic layer includes a first optical absorbance at a first temperature and a second optical absorbance at a second temperature.

Apparatuses and methods for absorbing optical energy

Provided herein is an apparatus including a head over-coat and a depleted region in the head over-coat. A media over-coat is deposited in the depleted region. A near field transducer is adjacent to the head over-coat, wherein the near field transducer combusts the deposited media over-coat.

Selective heat-assisted removal of head over-coat and media over-coat

Provided herein is an apparatus including a substrate and a magnetic recording layer over the substrate. In addition, a thermochromic layer is over the substrate, wherein the thermochromic layer includes a first optical absorbance at a first temperature and a second optical absorbance at a second temperature.

A magnetic data storage medium may include a substrate, a magnetic recording layer, a protective carbon overcoat, and a monolayer covalently bound to carbon atoms adjacent a surface of the protective carbon overcoat. According to this aspect of the disclosure, the monolayer comprises at least one of hydrogen, fluorine, nitrogen, oxygen, and a fluoro-organic molecule. In some embodiments, a surface of a read and recording head may also include a monolayer covalently bound to carbon atoms of a protective carbon overcoat.

Covalently bound monolayer for a protective carbon overcoat

A substrate having a carbon-deuterium protective overcoat layer, and method for making the same. In some embodiments, the substrate includes a recording structure having a magnetic recording layer. A protective overcoat layer is Formed on the recording structure, the protective overcoat layer composed of carbon-carbon (C&#x2014;C) and carbon-deuterium (C-D) bonds and having no carbon-hydrogen (C&#x2014;H) bonds.

Carbon-deuterium protective overcoat layer

A lubricant layer for a magnetic recording medium may include a perfluoropolyether having monomer units and end groups selected to provide high thermal stability and good reliability.

Media lubricant for high temperature application

A data storage device comprising a storage medium having a recordable surface, a transducing head having a bearing surface positioned adjacent to the recordable surface of the storage medium, and at least one compound disposed between the recordable surface and the bearing surface, the at least one compound comprising at least one functional group that imparts corrosion resistance and at least one functional group that imparts lubricating properties.

Protective coatings for data storage devices

Growing community of inventors

Palo Alto, CA, United States of America

Paul Max Jones