Title :
New Ni5Al3 underlayer for longitudinal magnetic recording media
Author :
Hsu, Yu-Nu ; Lambeth, David N. ; Laughlin, David E.
Author_Institution :
Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA
fDate :
7/1/2002 12:00:00 AM
Abstract :
We describe a new Ni5Al3 underlayer for high-density longitudinal magnetic recording. The Ni5Al3 underlayer has the FCC derivative Ga3Pt5 structure. The Ni5Al3 (221) plane has good lattice match with the CoCrPt (101¯0) plane. In addition, unlike the NiAl (112) plane, the Ni5Al3 (221) plane has the lowest surface energy. Hence, the Ni5Al3 thin film has a strong (221) texture and can induce CoCrPt (101¯0) texture. The microstructure and magnetic properties of the CoCrPt-Ni5Al 3 thin films are reported and discussed
Keywords :
aluminium alloys; interface structure; lattice constants; magnetic recording; magnetic thin films; nickel alloys; surface energy; texture; CoCrPt plane lattice match; CoCrPt-Ni5Al3; CoCrPt-Ni5Al3 thin films; FCC derivative Ga3Pt5 structure; Ni5Al3 (221) plane; Ni5Al3 (221) texture; Ni5Al3 underlayer; NiAl; NiAl (112) plane; longitudinal magnetic recording media; magnetic properties; microstructure; surface energy; Coercive force; Data storage systems; FCC; Lattices; Magnetic anisotropy; Magnetic films; Magnetic recording; Perpendicular magnetic anisotropy; Surface texture; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.1017774
