Thermally enabled exchange coupled media for magnetic data recording

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United States of America Patent

PATENT NO 8630060
APP PUB NO 20130235491A1
SERIAL NO

13417032

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Abstract

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A heat enabled magnetic media having a composite magnetic recording layer structure that includes first and second magnetic layers and an exchange coupling layer sandwiched between the first and second magnetic layers. The exchange coupling layer has a reduced Curie temperature that allows the magnetic layers to become decoupled a lower temperature. This reduced Curie temperature can be achieved the addition of an alloying element such as Ni or Cu into the exchange coupling layer. Therefore, the exchange coupling layer can be constructed of an alloy such as FePtNi FePtCu, and the magnetic layers can be constructed of a material such as FePt.

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Patent Owner(s)

  • HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V.;WESTERN DIGITAL TECHNOLOGIES, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mosendz, Oleksandr San Jose, US 17 156
Richter, Hans J Palo Alto, US 27 285

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