Western Digital Technologies, Inc.

Hgst Netherlands, B.v.

Arien Michael Ghaderi

Zhupei Shi

Kai Tang

Tuqiang Li

Jack Jyh-Kau Chang

Thomas C Arnoldussen

Chi Ho Lo

Magnetic media including a magnetic recording layer structure of at least six magnetic recording sublayers and at least six non-magnetic exchange control sublayers in an alternating pattern are provided. The magnetic recording layer structure includes a gradient of platinum content across the magnetic recording sublayers such that a top magnetic recording sublayer has a lowest platinum content and a bottom magnetic recording sublayer has a highest platinum content. In one such case, the magnetic media includes a substrate and the magnetic recording layer structure on the substrate. In another case, a method of fabricating such magnetic media is provided.

Magnetic media design with multiple non-magnetic exchange control layers

According to one embodiment, a soft underlayer structure includes a coupling layer, at least one outer soft underlayer positioned above and below the coupling layer, and at least one inner soft underlayer positioned above and below the coupling layer between the coupling layer and the associated outer soft underlayer, where the inner soft underlayers have a saturation magnetic flux density and/or a thickness that is different than a saturation magnetic flux density and/or a thickness of the outer soft underlayers.

Soft underlayer having a multilayer structure for high areal density perpendicular recording media

Growing community of inventors

Morgan Hill, CA, United States of America

Arien Michael Ghaderi