Wd Media, LLC

Bincheng Wang

Antony Ajan

B Ramamurthy Acharya

Hua Yuan

Alexander S Chernyshov

Tomoko Seki

Michael L Mallary

Gerardo Bertero

David Treves

A heat-assisted magnetic recording (HAMR) medium having improved signal-to-noise ratio capabilities includes a high-temperature exchange break layer (EBL) inserted between magnetic recording layers, where the high-temperature exchange break layer material is capable of maintaining its chemical properties at temperatures exceeding 300&#xb0; C. The high-temperature EBL may include a non-metallic compound including at least one of an oxide, a carbide, and a nitride.

Exchange break layer for heat-assisted magnetic recording media

A method and system provide a magnetic recording media usable in a heat assisted magnetic recording (HAMR) disk drive. The magnetic recording media includes a magnetic recording layer, a crystalline underlayer, and a crystalline heat sink layer. The crystalline underlayer is between the crystalline heat sink layer and the magnetic recording layer. The magnetic recording layer stores magnetic data. The crystalline underlayer has a first crystal structure. The crystalline heat sink layer has a second crystal structure.

Magnetic media capable of improving magnetic properties and thermal management for heat-assisted magnetic recording

A recording medium having improved signal-to-noise ratio (SNR) capabilities includes a cap layer over the recording layer, where the cap layer has a magnetic damping constant greater than 0.03, such as by using a FeHo cap layer. One mechanism for increasing the SNR is by reducing the switching field distribution. Such a medium is particularly useful in the context of heat-assisted magnetic recording (HAMR).

High damping cap layer for magnetic recording media

Aspects of the present invention are directed to heat assisted magnetic recording (HAMR) media with a CoCrPtB based capping layer design that is capable of reducing switching field distribution and boosting signal-to-noise ratio of HAMR media. In one embodiment of the invention, a recording medium for heat assisted magnetic recording (HAMR) includes a substrate, a magnetic recording layer on the substrate, and a capping layer on and directly in contact with the magnetic recording layer. The capping layer includes CoCrPtB.

Systems and methods for providing capping layers for heat assisted magnetic recording media

Systems and methods for providing thermal barrier bilayers for heat assisted magnetic recording (HAMR) media are provided. One such HAMR medium includes a substrate, a heat sink layer on the substrate, a thermal barrier bilayer on the heat sink layer, the bilayer comprising a first thermal barrier layer on the heat sink layer and an amorphous underlayer on the first thermal barrier layer, and a magnetic recording layer on the amorphous underlayer, wherein a thermal conductivity of the first thermal barrier layer is less than a thermal conductivity of the amorphous underlayer.

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Sunnyvale, CA, United States of America

Bincheng Wang