Magnetism of single-crystalline Co nanorods

K. Soulantica, F. Wetz, J. Maynadí, Andrea Falqui, R. P. Tan, T. Blon, B. Chaudret, M. Respaud*

*Corresponding author for this work

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We report on the synthesis and preparation of oriented nanomaterials of single crystalline metallic Co nanorods of 6 nm in diameters and two different aspect ratios (7 and 15). They display optimized magnetic properties, with a spontaneous magnetization just below the bulk one, and large coercive fields (up to 6.5 kOe at 300 K) as a result of coherent switching (i.e., Stoner and Wohlfarth mechanism). We measured a strong effective anisotropy very close to the expected value resulting from the sum of shape and magnetocrystalline contributions.

Original languageEnglish (US)
Article number152504
JournalApplied Physics Letters
Issue number15
StatePublished - Oct 22 2009

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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