Structure and magnetic properties of Co-W clusters produced by inert gas condensation

Farhad Golkar, M. J. Kramer, Y. Zhang, R. W. McCallum, R. Skomski, D. J. Sellmyer, J. E. Shield

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Abstract

In this article, inert-gas condensation was used to synthesize Co-W clusters. The formation, structure, and magnetic properties of the clusters were investigated. Sub-10-nm clusters were obtained, and the structures and average sizes were strongly dependent on sputtering power. At low sputtering powers, the clusters were predominantly amorphous, while, at high sputtering power, the clusters were crystalline. X ray diffraction and transmission electron microscopy revealed clusters with hcp structure at high sputtering power. The magnetic properties were dependent on the sputtering power and temperature, with the highest coercivity of 810 Oe at 10 K for high sputtering power.

Original languageEnglish (US)
Article number07B524
JournalJournal of Applied Physics
Volume111
Issue number7
DOIs
StatePublished - Apr 1 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Golkar, F., Kramer, M. J., Zhang, Y., McCallum, R. W., Skomski, R., Sellmyer, D. J., & Shield, J. E. (2012). Structure and magnetic properties of Co-W clusters produced by inert gas condensation. Journal of Applied Physics, 111(7), [07B524]. https://doi.org/10.1063/1.3676425