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Portrait of Ivan Maximov. Photo: Kennet Ruona

Ivan Maximov

Associate Professor, Coordinator Exploratory Nanotechnology

Portrait of Ivan Maximov. Photo: Kennet Ruona

Magnetostatic interactions in planar ring-like nanoparticle structures

Author

  • Yu.A. Koksharov
  • G.B. Khomutov
  • E.S. Soldatov
  • Dmitry Suyatin
  • Ivan Maximov
  • Lars Montelius
  • Patrick Carlberg

Summary, in English

Numerical calculations of equilibrium state energies and local magnetic fields in planar ring-like nanoparticle structures were performed. The dipole–dipole, Zeeman and magnetic anisotropy interactions were included into the model. The result of their competition depends on the value of the external magnetic field, magnetic parameters of an individual nanoparticle, size and shape of the structures. Flux-closed vortexes, single domain, two- domain ‘‘onion’’-like, ‘‘hedgehog’’-like and more complex spin structures can be realized. The critical field, providing a sharp transition from the flux-closed vortex to the ‘‘onion’’-like state, can be regulated by a variation of the particle magnetization and anisotropy constant, their easy directions, and particle space arrangement.

Department/s

  • Solid State Physics

Publishing year

2006

Language

English

Pages

731-734

Publication/Series

Thin Solid Films

Volume

515

Document type

Journal article

Publisher

Elsevier

Topic

  • Condensed Matter Physics

Keywords

  • ring-like structures
  • nanoparticles
  • magnetism
  • two-dimensional

Conference name

13th Intl Congr on Thin Films and 8th Intl Conf on Atomically Controlled Surf, Interfaces and Nanostr, Stockholm, Sweden (2005)

Conference date

2005-06-19 - 2005-06-23

Conference place

Stockholm, Sweden

Status

Published

ISBN/ISSN/Other

  • ISSN: 0040-6090