Highly oriented longitudinal magnetic media on direct textured glass substrates
AssigneeSeagate Technology LLC
InventorsShanghsien Alex Rou, John Wang, Romulo Ata, Kueir-Weei Chour
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Abstract
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 >1.5, preferably >1.85. Such highly oriented glass media shows a significant SNR (>2 dB) and parametric improvement over the counterpart isotropic media with the same film structure on non-textured glass or glass-ceramic substrates.
Claims6
A magnetic recording medium comprising a direct texture glass or glass-ceramic substrate and a film structure directly on the direct texture glass or glass-ceramic substrate, wherein the medium is an oriented longitudinal magnetic recording medium having Mrt OR of 1.5 or more and the film structure comprises an oxidized NiP layer, the medium further comprising a NiNb layer between the oxidized NiP layer and the direct texture glass or glass-ceramic substrate.
Dependencies are inferred from the claim text.