Leading shield for magnetic recording heads

Leading shield for magnetic recording heads

The present disclosure relates to a magnetic recording head having an exchange biased leading shield or leading edge shield (LES). The LES is a bilayer structure. One or more layers are coupled below the LES such that the LES is disposed between the main pole and the one or more layers. The one or m...

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Hauptverfasser: Li, Zhanjie, Goncharov, Alexander, Song, Suping, Lam, Terence T
Format: Patent
Sprache:eng
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INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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creator Li, Zhanjie
Goncharov, Alexander
Song, Suping
Lam, Terence T
description The present disclosure relates to a magnetic recording head having an exchange biased leading shield or leading edge shield (LES). The LES is a bilayer structure. One or more layers are coupled below the LES such that the LES is disposed between the main pole and the one or more layers. The one or more layers exchange bias the LES such that the upper layer of the LES has a magnetization parallel to the magnetization of the trailing shield. The lower layer of the LES has a magnetization that is antiparallel to the magnetization of the upper layer of the LES. The one or more layers set the preferred direction for the lower layer of the LES and sets the LES as a two-domain state without relying upon the anisotropy field (Hk) of either the upper or lower layers of the LES.
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subjects INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
title Leading shield for magnetic recording heads
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