Seagate Technology Incorporated

John Wang

Erol Girt

Shanghsien Alex Rou

Kueir-Weei Chour

Romulo Ata

Alex Rou

A magnetic recording medium having a substrate, an interlayer and a magnetic layer, the interlayer having at least a first intermediary layer, a second intermediary layer and a third intermediary layer, wherein the first intermediary layer or the third intermediary layer is non-magnetic or magnetic and the second intermediary layer has a hexagonal close pack crystal structure and a property of providing RKKY coupling between the first intermediary layer and the third intermediary layer when the first intermediary layer and the second intermediary layer are magnetic layers is disclosed.

Interlayer design for magnetic media

Oriented longitudinal magnetic recording media on direct texture glass or glass-ceramic substrate with a film structure of one or more Ni-containing layer, a Cr-containing underlayer, a Co-containing magnetic layer and carbon overcoat exhibits are capable of achieving Mrt OR of &#x3e;1.5, preferably &#x3e;1.85. Such highly oriented glass media shows a significant SNR (&#x3e;2 dB) and parametric improvement over the counterpart isotropic media with the same film structure on non-textured glass or glass-ceramic substrates.

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Fremont, CA, United States of America

John Wang