Reducing average grain and domain size in high-coercivity Co/Pd perpendicular magnetic recording media through seedlayer engineering

Journal Article · Sun May 15 00:00:00 EDT 2005 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1855206· OSTI ID:20711679

Speetzen, N J; Stadler, B J.H. ^[1]

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1. Electrical and Computer Engineering, University of Minnesota, Minnesota 55455 (United States)

InSn seedlayers for Co/Pd multilayered media were engineered using dopants (Pd, O) to achieve grain size of 7.8{+-}1.8 nm ({sigma}=23%) and virgin magnetic cluster size of less than 65 nm. H{sub N}=-5 kOe and H{sub c}=12.2 kOe make this media promising for extremely high-density recording. These parameters were all realized with room-temperature depositions without annealing. Media with O-doped 2-nm InSn seedlayers without other adhesion layers achieved H{sub c}=6.2 kOe, which will be beneficial in reducing spacing loss. There is evidence that the engineered seedlayers also reduce the anisotropy dispersion and therefore the switching field distributions of these media.

• OSTI ID: 20711679
• Journal Information: Journal of Applied Physics, Vol. 97, Issue 10; Conference: 49. annual conference on magnetism and magnetic materials, Jacksonville, FL (United States), 7-11 Nov 2004; Other Information: DOI: 10.1063/1.1855206; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ADHESION
ANISOTROPY
ANNEALING
COBALT
COERCIVE FORCE
DEPOSITION
DOPED MATERIALS
FERROMAGNETIC MATERIALS
GRAIN SIZE
HYSTERESIS
INDIUM ALLOYS
LAYERS
MAGNETIC MOMENTS
PALLADIUM
PERMANENT MAGNETS
TEMPERATURE RANGE 0273-0400 K
THIN FILMS
TIN ALLOYS