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Article Dans Une Revue Physical Review Letters Année : 2005

Uniform magnetic properties for an ultrahigh-density lattice of noninteracting Co nanostructures

Résumé

We report on the magnetic properties of two-dimensional Co nanoparticles arranged in macroscopically phase-coherent superlattices created by self-assembly on Au(788). Our particles have a density of 26 Tera/in(2) (1 Tera=10(12)), are monodomain, and have uniaxial out-of-plane anisotropy. The distribution of the magnetic anisotropy energies has a half width at half maximum of 17%, a factor of 2 more narrow than the best results reported for superlattices of three-dimensional nanoparticles. Our data show the absence of magnetic interactions between the particles. Co/Au(788) thus constitutes an ideal model system to explore the ultimate density limit of magnetic recording.

Dates et versions

hal-00450795 , version 1 (27-01-2010)

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N. Weiss, Tristan Cren, M. Epple, S. Rusponi, G. Baudot, et al.. Uniform magnetic properties for an ultrahigh-density lattice of noninteracting Co nanostructures. Physical Review Letters, 2005, 95, pp.157204. ⟨10.1103/PhysRevLett.95.157204⟩. ⟨hal-00450795⟩
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