Ferromagnetic Co-C nanodot arrays produced by direct interferometric laser annealing

M. Zheng, M. Yu, Y. Liu, R. Skomski, S. H. Liou, D. J. Sellmyer, V. N. Petryakov, Yu K. Verevkin, N. I. Polushkin, N. N. Salashchenko

Research output: Contribution to journalConference article

10 Scopus citations

Abstract

Magnetic properties of Co-C nanodot arrays produced by direct interferometric laser annealing are investigated by magnetic force microscopy (MFM) and magnetization measurements. The dots are formed by locally annealing sputtered amorphous Co-C films in regions where the laser intensity is highest. As-sputtered Co-C films do not exhibit ferromagnetic order at room temperature, but MFM shows that the dots become magnetic upon annealing, possibly due to the agglomeration or phase separation of Co-rich clusters. The dots are embedded in either a paramagnetic or weakly magnetic matrix. The magnetic properties of the generated pattern can be changed by varying the laser power. The present results show that direct interferometric lithography may become a useful tool for fabricating future patterned magnetic nanostructures.

Original languageEnglish (US)
Pages (from-to)2070-2072
Number of pages3
JournalIEEE Transactions on Magnetics
Volume37
Issue number4 I
DOIs
StatePublished - Jul 2001
Event8th Joint Magnetism and Magnetic Materials -International Magnetic Conference- (MMM-Intermag) - San Antonio, TX, United States
Duration: Jan 7 2001Jan 11 2001

Keywords

  • Artificially structured materials - small particles and patterned films
  • Magnetic domains

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Ferromagnetic Co-C nanodot arrays produced by direct interferometric laser annealing'. Together they form a unique fingerprint.

  • Cite this

    Zheng, M., Yu, M., Liu, Y., Skomski, R., Liou, S. H., Sellmyer, D. J., Petryakov, V. N., Verevkin, Y. K., Polushkin, N. I., & Salashchenko, N. N. (2001). Ferromagnetic Co-C nanodot arrays produced by direct interferometric laser annealing. IEEE Transactions on Magnetics, 37(4 I), 2070-2072. https://doi.org/10.1109/20.951056