Apparatus including a perpendicular magnetic recording layer having a convex magnetic anisotropy profile

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United States of America Patent

PATENT NO 9142240
APP PUB NO 20120026626A1
SERIAL NO

12847745

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An apparatus may include a first magnetic layer, a first exchange break layer formed on the first magnetic layer, a second magnetic layer formed on the first exchange break layer, a second exchange break layer formed on the second magnetic layer, and a third magnetic layer formed on the second exchange break layer. The first magnetic layer has a first magnetic anisotropy energy, Hk1, the second magnetic layer has a second magnetic anisotropy energy, Hk2, and the third magnetic layer has a third magnetic anisotropy energy, Hk3. In some embodiments, Hk1−Hk2 is less than Hk2−Hk3. In some embodiments, the apparatus may be a perpendicular magnetic recording medium.

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Patent Owner(s)

  • SEAGATE TECHNOLOGY LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nolan, Thomas Patrick Fremont, US 29 260
Richter, Hans Jürgen Palo Alto, US 6 20

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