Antiferromagnetic iridium manganese based intermediate layers for perpendicular magnetic recording media

Kumar Srinivasan, S. N. Piramanayagam, Rachid Sbiaa

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Current generation CoCrPt oxide based perpendicular magnetic recording media use two Ru-based intermediate layers in order to grow crystallographically textured, and magnetically isolated granular media. In this work, the advantage of replacing the Ru grain isolation layer with antiferromagnetic IrMn is demonstrated. Media samples using 7.5 nm thick IrMn intermediate layers show perpendicular texture with dispersion below 4°, coercivity of over 4000 Oe alongside magnetic exchange decoupling, average grain sizes of 6 nm with distributions under 14%, and thermal stability factor of 88. The IrMn layer may also help to stabilize the recording layer grains against thermal instability effects.

Original languageEnglish
Article number072503
JournalApplied Physics Letters
Volume93
Issue number7
DOIs
Publication statusPublished - 2008

Fingerprint

magnetic recording
iridium
manganese
thermal instability
decoupling
coercivity
isolation
thermal stability
textures
grain size
recording
oxides

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Antiferromagnetic iridium manganese based intermediate layers for perpendicular magnetic recording media. / Srinivasan, Kumar; Piramanayagam, S. N.; Sbiaa, Rachid.

In: Applied Physics Letters, Vol. 93, No. 7, 072503, 2008.

Research output: Contribution to journalArticle

@article{441f7255e17c46e09520a57f3decca7d,
title = "Antiferromagnetic iridium manganese based intermediate layers for perpendicular magnetic recording media",
abstract = "Current generation CoCrPt oxide based perpendicular magnetic recording media use two Ru-based intermediate layers in order to grow crystallographically textured, and magnetically isolated granular media. In this work, the advantage of replacing the Ru grain isolation layer with antiferromagnetic IrMn is demonstrated. Media samples using 7.5 nm thick IrMn intermediate layers show perpendicular texture with dispersion below 4°, coercivity of over 4000 Oe alongside magnetic exchange decoupling, average grain sizes of 6 nm with distributions under 14{\%}, and thermal stability factor of 88. The IrMn layer may also help to stabilize the recording layer grains against thermal instability effects.",
author = "Kumar Srinivasan and Piramanayagam, {S. N.} and Rachid Sbiaa",
year = "2008",
doi = "10.1063/1.2970032",
language = "English",
volume = "93",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "7",

}

TY - JOUR

T1 - Antiferromagnetic iridium manganese based intermediate layers for perpendicular magnetic recording media

AU - Srinivasan, Kumar

AU - Piramanayagam, S. N.

AU - Sbiaa, Rachid

PY - 2008

Y1 - 2008

N2 - Current generation CoCrPt oxide based perpendicular magnetic recording media use two Ru-based intermediate layers in order to grow crystallographically textured, and magnetically isolated granular media. In this work, the advantage of replacing the Ru grain isolation layer with antiferromagnetic IrMn is demonstrated. Media samples using 7.5 nm thick IrMn intermediate layers show perpendicular texture with dispersion below 4°, coercivity of over 4000 Oe alongside magnetic exchange decoupling, average grain sizes of 6 nm with distributions under 14%, and thermal stability factor of 88. The IrMn layer may also help to stabilize the recording layer grains against thermal instability effects.

AB - Current generation CoCrPt oxide based perpendicular magnetic recording media use two Ru-based intermediate layers in order to grow crystallographically textured, and magnetically isolated granular media. In this work, the advantage of replacing the Ru grain isolation layer with antiferromagnetic IrMn is demonstrated. Media samples using 7.5 nm thick IrMn intermediate layers show perpendicular texture with dispersion below 4°, coercivity of over 4000 Oe alongside magnetic exchange decoupling, average grain sizes of 6 nm with distributions under 14%, and thermal stability factor of 88. The IrMn layer may also help to stabilize the recording layer grains against thermal instability effects.

UR - http://www.scopus.com/inward/record.url?scp=50249163655&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=50249163655&partnerID=8YFLogxK

U2 - 10.1063/1.2970032

DO - 10.1063/1.2970032

M3 - Article

AN - SCOPUS:50249163655

VL - 93

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 7

M1 - 072503

ER -