Seagate Technology Incorporated

Huan H Tang

Jing Gui

Xiaoding Ma

Michael Joseph Stirniman

Raj Thangaraj

Zine-Eddine Boutaghou

Paul Max Jones

Bruno Jean Marchon

Martin Giles Blaber

Florin Zavaliche

Zhaohui Fan

Fujian Huang

XiaoPing Yan

Hongbo Wang

Jianwei Liu

Timothy John Klemmer

Ramesh Sundaram

Jason Wayne Riddering

Yang Yang

Ruoxi Yang

Emil John C Esmenda

Emir R Kazazic

Kyoumarss Damavandi

Wei Hsin Yao

David S Kuo

Dallas W Meyer

Jan-Ulrich Thiele

Peter Raymond Segar

Joel William Hoehn

Zine Eddine Boutaghou

Daniel Paul Burbank

James Morgan Murphy

John L Brand

Mary Cynthia Hipwell

James E Angelo

Jason L Pressesky

Charles Frederick Brucker

Andreas Argyros Polycarpou

Dale E Egbert

Kueir-Weei Chour

David Gerard Wobbe

Subrahmanyan Nagarajan

Gary Clark Rauch

Bing Zhang

Kevin John Grannen

Jeffery K Berkowitz

Mukund Channagiri Rao

Joshua Charles Harrison

Xinwei Li

Jianmin Wang

Shashi Bhushan Agarwal

Emil John Catoc Esmenda

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 method and system for cleaning and/or burnishing an article. The article is operated on by a burnishing object having one more cutting edges and one or more heating surfaces. The article rotates relative to the burnishing head and the cutting edges remove asperities from the article. The heating surface can be activated and can optionally protrude from the burnishing head to further reduce roughness of the surface of the article as the article is rotating relative to the head. The cutting edges and heating surfaces can be configured in shape and size (i.e., geometry) to accommodate the article.

Advanced heater-assisted media burnishing head media burnish process

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 lubricant for improving the durability and reliability of recording media used in hard drives is disclosed. The lubricant comprises a perfluoropolyether main chain with a first end attached to a hexa(trifluoromethylphenoxy)cyclotriphosphazene, a second end attached to a bonding enhancer for enhancing bonding between the lubricant and a carbon-containing layer. The bonding enhancer of the lubricant can contain multiple hydroxyl, amide groups, 2,3-dihydroxy-1-propoxyl, acetamide, methacrylate, methyl methacrylate and glycidyl ether. Some bonding enhancers such as methacrylate, methyl methacrylate or glycidyl ether, can be further activated with ultraviolet light.

Thin film lubricant for advanced tribological performance of storage medium

A lubricant for improving the durability and reliability of recording media used in hard drives is disclosed. The lubricant comprises a perfluoropolyether main chain with a first end attached to a hexa(trifluoromethylphenoxy) cyclotriphosphazene, a second end attached to a bonding enhancer for enhancing bonding between the lubricant and a carbon-containing layer. The bonding enhancer of the lubricant can contain multiple hydroxyl, amide groups, 2,3-dihydroxy-1-propoxyl, acetamide, methacrylate, methyl methacrylate and glycidyl ether. Some bonding enhancers such as methacrylate, methyl methacrylate or glycidyl ether, can be further activated with ultraviolet light.

An arrangement and method of measuring head-media spacing modulation (HMS_Wq) removes the portion of out-of-plane motion caused by disk modes from the dynamic measurements of hard disk surface topography. Employing time-domain measurement techniques, circumferential surface topographical measurements are made for a hard disk surface. A boundary wavelength is determined, and a first partial HMS_Wq value is determined based upon measurements taken at a first disk rotational speed. A second partial HMS_Wq value is determined based upon measurements taken at a second disk rotational speed. The first and second partial HMS_Wq values are combined to provide a complete and accurate HMS_Wq value, taking advantage of the principle that the disk mode location in the spatial domain topography spectrum converted from the measured time-domain data shifts when the disk rotation speed is changed during the measurement.

Method and arrangement for topographically characterizing a surface of a hard disk with distortion due to disk modes removed

A magnetic recording medium with low bonded lubricant at the landing zone, where the head takes off and lands, for better wear resistance, and with high bonded lubricant at the data zone to protect the data from corrosion, and a method of making the same are disclosed.

Zone bonded lubrication for hard disk recording media

Corrosion protection of magnetic recording media is achieved by providing a thin protective barrier layer comprising ruthenium on the magnetic layer. Embodiments include forming a corrosion barrier layer less than 10 &angst; of elemental ruthenium, a ruthenium oxide, a ruthenium alloy, a layer comprising mixed oxides of ruthenium and an alloying element, a composite of a ruthenium layer and a layer of ruthenium oxide or a composite of a ruthenium alloy layer and a layer of mixed oxides of ruthenium and an alloying element. A carbon containing an overcoat is then formed, as at a thickness of about 10 &angst; to 50 &angst;, on the corrosion protective layer.

Magnetic recording media with Ru corrosion barrier layer

A magnetic recording medium with a dual-layer lubricant for better and faster mobility of a lubricant to ensure rapid healing of areas of the medium that have been depleted of the lubricant is disclosed.

Magnetic recording media with a multiple-layer lubricant

A component of a recording device comprising a magnetic layer, means for improving corrosion resistance of the magnetic layer and a carbon overcoat, and a method of making and using the same are disclosed. The means for improving corrosion resistance of the magnetic layer comprises a sealing layer comprising a refractory metal or a refractory metal-containing alloy.

Component of a magnetic recording medium with sealing layer for corrosion protection

Method for manufacturing magnetic media with textured CSS landing zone formed by ion implantation, and media obtained thereby

A magnetic recording medium comprising a magnetic layer and means for resisting corrosion of the magnetic layer, and a method of making and using the magnetic recording medium are disclosed.

Lubricant overcoat for recording media and a process for making the same

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Fremont, CA, United States of America

Huan H Tang