CoPt patterned media in anodized aluminum oxide templates
- Center for Magnetic Recording Research, University of California, San Diego, La Jolla, California 92093-0411 (United States)
Patterned recording media consisting of a vertically aligned array of L1{sub 0} phase CoPt nanowires embedded in a thin anodized aluminum oxide (AAO) template on silicon has been prepared. A sputter deposited thin film of aluminum on silicon was anodized and a CoPt magnetic alloy was electrodeposited into the pores of the AAO. The vertically aligned arrays of CoPt nanowires were about {approx}100 nm tall with {approx}20 nm average diameter. Since the CoPt nanowire array is laterally constrained by the surrounding AAO, the nanowire diameter is maintained without coarsening during the L1{sub 0} phase conversion heat treatment at 700 deg. C. After annealing and conversion to the L1{sub 0} phase, the {approx}20 nm CoPt nanowires exhibit a large coercivity of {approx}8 kOe measured in the in-plane and perpendicular directions.
- OSTI ID:
- 20788132
- Journal Information:
- Journal of Applied Physics, Vol. 99, Issue 8; Other Information: DOI: 10.1063/1.2163289; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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