Seagate Technology Incorporated

Yinfeng Ding

Jan-Ulrich Thiele

Yingguo Peng

Ganping Ju

Timothy John Klemmer

Yukiko A Kubota

Li Gao

Kai-Chieh Chang

Xiaobin Zhu

Kai Chieh Chang

Thomas P Nolan

Kangkang Wang

QiHong Wu

David S Kuo

Xi Chen

Alexander Qihong Wu

Bin Lu

Xiaoding Ma

Florin Zavaliche

Pin-Wei Huang

Hassib Amini

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

Provided herein is an apparatus including a layer stack. A first granular metal layer overlies the layer stack, wherein the first granular metal layer includes first metal grains separated by voids. A first granular non-metal layer overlies the first granular metal layer, wherein the first granular non-metal layer includes first non-metal grains separated by a first segregant. A second granular non-metal layer overlies the first granular non-metal layer, wherein the second granular non-metal layer includes second non-metal grains separated by a second segregant. A second granular metal layer overlies the second granular non-metal layer, wherein the second granular metal layer includes second metal grains separated by a third segregant.

Granularity in overlying magnetic and non-magnetic layers

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

A magnetic stack includes multiple granular layers, at least one of the multiple granular layers is a magnetic layer that includes exchange coupled magnetic grains separated by a segregant having Ms greater than 100 emu/cc. Each of the multiple granular layers have anisotropic thermal conductivity.

Recording layer for heat assisted magnetic recording

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 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

The embodiments disclose a patterned composite magnetic layer structure configured to use magnetic materials having differing temperature and magnetization characteristics in a recording device, wherein the patterned composite magnetic layer structure includes magnetic layers, at least one first magnetic material configured to be used in a particular order to reduce a recording temperature and configured to control and regulate coupling and decoupling of the magnetic layers and at least one second magnetic material with differing temperature characteristics is configured to control recording and erasing of data.

Composite magnetic recording structure for heat assisted magnetic recording device

A data media may generally be configured in accordance with various embodiments with contactingly adjacent first and second heatsink layers that are tuned with a common crystallographic orientation and with different thermal conductivities to provide a predetermined thermal gradient. The data media may further be configured with a recording layer formed with the common crystallographic orientation adjacent the first and second heatsink layers.

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Fremont, CA, United States of America

Yinfeng Ding