Magnetic media with improved exchange coupling

Magnetic media with improved exchange coupling

A magnetic recording medium includes a substrate, an underlayer, a lower magnetic layer formed on the underlayer, an intermediate layer, and an upper magnetic layer formed on the intermediate layer. The intermediate layer is typically Ru, and promotes antiferromagnetic coupling between the upper and...

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Hauptverfasser: Bertero, Gerardo, Malhotra, Sudhir, Wachenschwanz, David, Shan, Zhengsheng, Stafford, Donald
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Sprache:eng
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creator Bertero, Gerardo
Malhotra, Sudhir
Wachenschwanz, David
Shan, Zhengsheng
Stafford, Donald
description A magnetic recording medium includes a substrate, an underlayer, a lower magnetic layer formed on the underlayer, an intermediate layer, and an upper magnetic layer formed on the intermediate layer. The intermediate layer is typically Ru, and promotes antiferromagnetic coupling between the upper and lower magnetic layers. The upper and lower magnetic layers are typically Co alloys. The lower magnetic layer has a high saturation magnetization Ms to promote high exchange coupling between the upper and lower magnetic layers. The dynamic coercivity of the lower magnetic layer is lower than the exchange field to ensure rapid switching of the lower magnetic layer.
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title Magnetic media with improved exchange coupling
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