Nip seed layer effect on [Co/Pd]n/Pd/(NiP)/FeCoC perpendicular recording media for extremely high areal density

Eng Wei Soo; Weiwei Jiang; Lianjun Wu; Jian Ping Wang

Nip seed layer effect on [Co/Pd]_n/Pd/(NiP)/FeCoC perpendicular recording media for extremely high areal density

Eng Wei Soo, Weiwei Jiang, Lianjun Wu, Jian Ping Wang

Electrical and Computer Engineering

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

Abstract

The effect of NiP as a seed layer for the [Co/Pd]_n multilayer perpendicular recording media was studied. It was found that a thin layer of 2 nm NiP inserted between the FeCoC soft magnetic underlayer and the [Co/Pd]_n recording layer improved the magnetic properties such as coercivity, squareness and nucleation field. These improvements may be due to the enhanced grain isolation promoted by the NiP seed layer, as well as the lower surface roughness of the NiP seed layer. Read/write test using Guzik spin stand with a ring-type head showed a D₅₀ value 220kFCI in the roll-off curve. The magnetic transitions recorded up to 390kFCI for [Co/Pd]_n, media with the NiP seed layer can be observed clearly with MFM.

Original language	English (US)
Pages (from-to)	1740-1744
Number of pages	5
Journal	IEICE Transactions on Electronics
Volume	E85-C
Issue number	10
State	Published - Oct 2002

Keywords

Double-layered perpendicular media
Grain isolation
NiP seed layer
[Co/Pd] multilayer

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title = "Nip seed layer effect on [Co/Pd]n/Pd/(NiP)/FeCoC perpendicular recording media for extremely high areal density",

abstract = "The effect of NiP as a seed layer for the [Co/Pd]n multilayer perpendicular recording media was studied. It was found that a thin layer of 2 nm NiP inserted between the FeCoC soft magnetic underlayer and the [Co/Pd]n recording layer improved the magnetic properties such as coercivity, squareness and nucleation field. These improvements may be due to the enhanced grain isolation promoted by the NiP seed layer, as well as the lower surface roughness of the NiP seed layer. Read/write test using Guzik spin stand with a ring-type head showed a D50 value 220kFCI in the roll-off curve. The magnetic transitions recorded up to 390kFCI for [Co/Pd]n, media with the NiP seed layer can be observed clearly with MFM.",

keywords = "Double-layered perpendicular media, Grain isolation, NiP seed layer, [Co/Pd] multilayer",

author = "Soo, {Eng Wei} and Weiwei Jiang and Lianjun Wu and Wang, {Jian Ping}",

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TY - JOUR

T1 - Nip seed layer effect on [Co/Pd]n/Pd/(NiP)/FeCoC perpendicular recording media for extremely high areal density

AU - Soo, Eng Wei

AU - Jiang, Weiwei

AU - Wu, Lianjun

AU - Wang, Jian Ping

PY - 2002/10

Y1 - 2002/10

N2 - The effect of NiP as a seed layer for the [Co/Pd]n multilayer perpendicular recording media was studied. It was found that a thin layer of 2 nm NiP inserted between the FeCoC soft magnetic underlayer and the [Co/Pd]n recording layer improved the magnetic properties such as coercivity, squareness and nucleation field. These improvements may be due to the enhanced grain isolation promoted by the NiP seed layer, as well as the lower surface roughness of the NiP seed layer. Read/write test using Guzik spin stand with a ring-type head showed a D50 value 220kFCI in the roll-off curve. The magnetic transitions recorded up to 390kFCI for [Co/Pd]n, media with the NiP seed layer can be observed clearly with MFM.

AB - The effect of NiP as a seed layer for the [Co/Pd]n multilayer perpendicular recording media was studied. It was found that a thin layer of 2 nm NiP inserted between the FeCoC soft magnetic underlayer and the [Co/Pd]n recording layer improved the magnetic properties such as coercivity, squareness and nucleation field. These improvements may be due to the enhanced grain isolation promoted by the NiP seed layer, as well as the lower surface roughness of the NiP seed layer. Read/write test using Guzik spin stand with a ring-type head showed a D50 value 220kFCI in the roll-off curve. The magnetic transitions recorded up to 390kFCI for [Co/Pd]n, media with the NiP seed layer can be observed clearly with MFM.

KW - Double-layered perpendicular media

KW - Grain isolation

KW - NiP seed layer

KW - [Co/Pd] multilayer

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SN - 0916-8524

VL - E85-C

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JO - IEICE Transactions on Electronics

JF - IEICE Transactions on Electronics

IS - 10

ER -

Nip seed layer effect on [Co/Pd]_n/Pd/(NiP)/FeCoC perpendicular recording media for extremely high areal density

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