Magnetic recording media using directly textured glass

A magnetic recording medium deposited on glass and having an orientation ratio greater than one is disclosed. The magnetic recording medium includes a CoW seedlayer deposited on a circumferentially textured glass substrate. The magnetic recording medium with such a seedlayer can have an OR that is s...

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Bibliographic Details
Main Authors Rou, Shanghsien, Lee, Li-Lien, Ata, Romulo
Format Patent
LanguageEnglish
Published 23.12.2004
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Summary:A magnetic recording medium deposited on glass and having an orientation ratio greater than one is disclosed. The magnetic recording medium includes a CoW seedlayer deposited on a circumferentially textured glass substrate. The magnetic recording medium with such a seedlayer can have an OR that is similar or higher than that with a NiP seedlayer. Magnetic recording medium with a CoW seedlayer can produce oriented glass media with orientation ratio OR>1 when sputtered on substrates which have been circumferentially textured before the deposition of the CoW seedlayer. The W content of the CoW seedlayer can range between 30-50 at %. The thickness of the CoW seedlayer can range between 10 and 200 . The method for sputter depositing the magnetic recording medium is also disclosed and includes sputter depositing the CoW seedlayer using pure Ar as sputtering gas or using a mixture of Ar and O 2 , H 2 O and N 2 as sputtering gas.