Seagate Technology Incorporated

Other

Yukiko A Kubota

Yingguo Peng

Timothy John Klemmer

Ganping Ju

Jan-Ulrich Thiele

Yinfeng Ding

Xiaobin Zhu

Kai-Chieh Chang

Li Gao

Dieter Klaus Weller

Julius Kurt Hohlfeld

Kai Chieh Chang

QiHong Wu

David S Kuo

Thomas P Nolan

Bin Lu

Florin Zavaliche

Kangkang Wang

Chubing Peng

Amit Vasant Itagi

Kurt W Wierman

Xi Chen

Paul Max Jones

Duane Clifford Karns

Fujian Huang

Michael Allen Seigler

Kim Yang Lee

Koichi R Wago

Xiaomin Yang

Erol Girt

Werner Scholz

Sharat Batra

Thomas Francis Ambrose

Rene Johannes Marinus Van De Veerdonk

Earl Chrzaszcz Johns

Pin-Wei Huang

Abebe Hailu

Bogdan Florin Valcu

Alexander Yulievich Dobin

Isabel Goncalves Trindade

Jai-Young Kim

James Kent Howard

Mei-Ling Wu

Yinfeng Deng

Yinfong Ding

Hassib Amini

Stanko Radvan Brankovic

KaiChieh Chang

A stack includes a substrate and a magnetic recording layer. Disposed between the substrate and magnetic recording layer is an MgO&#x2014;Ti(ON) layer.

Magnetic stack including MgO&#x2014;Ti(ON) interlayer

The embodiments disclose a stack feature of a stack configured to confine optical fields within and to a patterned plasmonic underlayer in the stack configured to guide light from a light source to regulate optical coupling.

Patterned plasmonic underlayer

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

A data device may have at least a magnetic lamination with a thermal retention structure deposited on a substrate and configured to maintain a predetermined temperature for a predetermined amount of time. Such predetermined temperature and amount of time may allow for the growth of a magnetic layer with a predetermined magnetic anisotropy.

Thermal retention structure for a data device

A magnetic stack includes a interlayer structure and a magnetic recording layer disposed over the interlayer in the magnetic stack. The magnetic recording layer includes substantially ordered L, &#x3c;001&#x3e; oriented crystalline magnetic grains laterally separated by a nonmagnetic, segregant material. The interlayer structure comprises a first layer having cubic crystal structure including &#x3c;100&#x3e; oriented crystalline grains and a second layer having crystalline grains laterally separated by a segregant material. The crystalline grains of the second layer are arranged in substantially vertically contiguous alignment with the crystalline grains of the first layer and the segregant material of the magnetic recording layer is arranged in substantially vertically contiguous alignment with the segregant material of the second layer.

Interlayer structure for heat assisted magnetic recording

An apparatus is disclosed. The apparatus includes a storage layer, a thermal exchange control layer disposed over the storage layer, and a write layer disposed over the thermal exchange control layer. A Curie temperature of the thermal exchange control layer is lower than a Curie temperature of the storage layer. The Curie temperature of the thermal exchange control layer is lower than a Curie temperature of the write layer.

Heat assisted magnetic recording (HAMR) media with thermal exchange control layer of lower curie temperature

In some embodiments, a thermally assisted data recording medium has a recording layer formed of iron (Fe), platinum (Pt) and a transition metal T selected from a group consisting of Rhodium (Rh), Ruthenium (Ru), Osmium (Os) and Iridium (Ir) to substitute for a portion of the Pt content as FePtTwith Y in the range of from about 20 at % to about 80 at % and X in the range of from about 0 at % to about 20 at %.

Low power thermally assisted data recording media

A stack includes a substrate, a magnetic recording layer comprising FePtX disposed over the substrate, and a capping layer disposed on the magnetic recording layer. The capping layer comprises Co; at least one rare earth element; one or more elements selected from a group consisting of Fe and Pt; and an amorphizing agent comprising one to three elements selected from a group consisting of B, Zr, Ta, Cr, Nb, W, V, and Mo.

Capping layer for magnetic recording stack

Magnetic stack including MgO-Ti(ON) interlayer

Various magnetic stack embodiments may be constructed with a soft magnetic underlayer (SUL) having a first thickness disposed between a substrate and a magnetic recording layer. A heatsink may have a second thickness and be disposed between the SUL and the magnetic recording layer. The first and second thicknesses may each be tuned to provide predetermined thermal conductivity and magnetic permeability throughout the data media.

Data media with tuned thermal conductivity and magnetic permeability

Provided herein is an apparatus comprising a substrate; a continuous layer over the substrate comprising a first heat sink layer; and a plurality of features over the continuous layer comprising a second heat sink layer, a first magnetic layer over the second heat sink layer, and a second magnetic layer, wherein the first and second magnetic layers are configured to provide a temperature-dependent, exchange spring mechanism.

Apparatus including temperature-dependent exchange spring mechanism

A perpendicular magnetic recording layer of a magnetic recording medium includes a plurality of bit-patterned magnetic islands, wherein each of the plurality of islands overlay a soft magnetic under-layer. Each of the magnetic islands includes a first magnetic sub-layer adjacent a second magnetic sub-layer, wherein the first sub-layer has a relatively high magnetic anisotropy that is greater than a magnetic anisotropy of the second sub-layer. The magnetic recording layer further includes a third sub-layer, which extends to connect each of the plurality of islands. The third sub-layer may have a magnetic anisotropy that is less than that of the second sub-layer of each of the magnetic islands and/or may serve as an interlayer, extending between the first sub-layer and the soft magnetic under-layer of the recording medium, and having a structure to help to produce the greater anisotropy first magnetic sub-layer.

Magnetic layering for bit-patterned stack

A magnetic stack includes a heatsink layer comprising (200) Cu or (200) CuX, a magnetic recording layer, and an interlayer disposed between the heatsink layer and the magnetic recording layer.

Heatsink for heat assisted magnetic recording media

Growing community of inventors

Pittsburgh, OR, United States of America

Yukiko A Kubota