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
SN - 0003-6951
VL - 93
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 7
M1 - 072503
ER -