Magneto-resistive read sensor with perpendicular magnetic anisotropy

Yunfei Ding; Jack H. Judy; Jian Ping Wang

doi:10.1109/TMAG.2004.839069

Magneto-resistive read sensor with perpendicular magnetic anisotropy

Yunfei Ding, Jack H. Judy, Jian Ping Wang

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

A new read sensor design is proposed in attempt to solve the magnetization distribution and thermal stability problems for nano-meter scale read sensors. In this design the free layer has a perpendicular-to-plane easy axis and the reference layer has an in-plane easy axis. Giant magnetoresistance (GMR) film with this structure is demonstrated in which the free layer is a [CoFe/Pt⌉_×n multilayer. The structure of [CoFe/Pt⌉_×n multi-layer has to be optimized so that the magnetic properties of the free layer can meet the requirement of a MR reader.

Original language	English (US)
Pages (from-to)	707-712
Number of pages	6
Journal	IEEE Transactions on Magnetics
Volume	41
Issue number	2
DOIs	https://doi.org/10.1109/TMAG.2004.839069
State	Published - Feb 2005

Bibliographical note

Funding Information:
Manuscript received August 8, 2004. This work was supported by Seagate Technology, Bloomington, MN.

Keywords

Giant magnetoresistance
Magnetic domains
Magnetic heads
Magnetic noise
Magnetic sensor
Perpendicular magnetic anisotropy

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10.1109/TMAG.2004.839069

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abstract = "A new read sensor design is proposed in attempt to solve the magnetization distribution and thermal stability problems for nano-meter scale read sensors. In this design the free layer has a perpendicular-to-plane easy axis and the reference layer has an in-plane easy axis. Giant magnetoresistance (GMR) film with this structure is demonstrated in which the free layer is a [CoFe/Pt⌉×n multilayer. The structure of [CoFe/Pt⌉×n multi-layer has to be optimized so that the magnetic properties of the free layer can meet the requirement of a MR reader.",

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AU - Judy, Jack H.

AU - Wang, Jian Ping

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N2 - A new read sensor design is proposed in attempt to solve the magnetization distribution and thermal stability problems for nano-meter scale read sensors. In this design the free layer has a perpendicular-to-plane easy axis and the reference layer has an in-plane easy axis. Giant magnetoresistance (GMR) film with this structure is demonstrated in which the free layer is a [CoFe/Pt⌉×n multilayer. The structure of [CoFe/Pt⌉×n multi-layer has to be optimized so that the magnetic properties of the free layer can meet the requirement of a MR reader.

AB - A new read sensor design is proposed in attempt to solve the magnetization distribution and thermal stability problems for nano-meter scale read sensors. In this design the free layer has a perpendicular-to-plane easy axis and the reference layer has an in-plane easy axis. Giant magnetoresistance (GMR) film with this structure is demonstrated in which the free layer is a [CoFe/Pt⌉×n multilayer. The structure of [CoFe/Pt⌉×n multi-layer has to be optimized so that the magnetic properties of the free layer can meet the requirement of a MR reader.

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KW - Magnetic domains

KW - Magnetic heads

KW - Magnetic noise

KW - Magnetic sensor

KW - Perpendicular magnetic anisotropy

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Magneto-resistive read sensor with perpendicular magnetic anisotropy

Abstract

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