Properties of lithographically formed cobalt and cobalt alloy single crystal patterned media

S. Ganesan, C. M. Park, K. Hattori, H. C. Park, R. L. White, H. Koo, R. D. Gomez

Research output: Contribution to journalConference article

12 Citations (Scopus)

Abstract

We have fabricated single crystal cobalt and Co90Cr10 islands of dimension 130 nm × 330 nm × 20 nm by a direct-write electron beam lithography and ion-milling process. The islands have the crystalline easy axis along the short axis. These islands have been characterized by magnetic force microscope in the presence of an applied field. About 85% of the as-grown cobalt islands were single domain and rest 15% showed a bi-domain state. The as-grown Co90Cr10 islands were all in a single domain state. In remanence all the islands were single domain in both the pure and the alloyed films. Two modes of switching were observed. Some of the islands switched by going through a bi-domain state and the rest switched directly from a single domain state to a single domain state.

Original languageEnglish
Pages (from-to)2987-2989
Number of pages3
JournalIEEE Transactions on Magnetics
Volume36
Issue number5 I
DOIs
Publication statusPublished - 2000 Sep
Event2000 International Magnetics Conference (INTERMAG 2000) - Toronto, Ont, Canada
Duration: 2000 Apr 92000 Apr 12

Keywords

  • Electron beam lithography
  • Magnetic force microscopy
  • Magnetic recording
  • Patterned media

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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    Ganesan, S., Park, C. M., Hattori, K., Park, H. C., White, R. L., Koo, H., & Gomez, R. D. (2000). Properties of lithographically formed cobalt and cobalt alloy single crystal patterned media. IEEE Transactions on Magnetics, 36(5 I), 2987-2989. https://doi.org/10.1109/20.908650