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Competing Interactions in Patterned and Self-Assembled Magnetic Nanostructures

  • Olav Hellwig
  • Laura J. Heyderman
  • Oleg Petracic
  • Hartmut Zabel
Chapter
Part of the Springer Tracts in Modern Physics book series (STMP, volume 246)

Abstract

In this chapter we describe the static properties of different nanomagnetic systems, which have one thread in common: they consist of arrays of structures each containing a macrospin or a magnetic dipole interacting with its neighbors. We start with a general overview on rectangular and circular islands, their domain structures and interactions. In the second part we discuss the competing interactions and geometric frustration of magnetic dipoles arranged on square and honeycomb lattices, a new field that has become known as artificial spin-ice. The third part covers a technologically very important aspect of densely packed magnetic nanostructures with perpendicular anisotropy for use in hard disk drives in the form of bit patterned media. Here the interaction with neighboring islands may increase or decrease the switching field of an individual target island in the patterned array. The fourth part discusses magnetic clusters, which are arranged by self-organization rather than by lithography, providing further possibilities for investigating magnetic ordering and phase transitions.

Keywords

Vortex State Magnetic Island Perpendicular Anisotropy Single Domain State Micromagnetic Simulation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Olav Hellwig
    • 1
  • Laura J. Heyderman
    • 2
  • Oleg Petracic
    • 3
  • Hartmut Zabel
    • 4
  1. 1. San Jose Research CenterHGST, a Western Digital CompanySan Jose CAUSA
  2. 2.Paul Scherrer InstituteCH-5232 Villigen PSIVilligenSwitzerland
  3. 3.Jülich Centre for Neutron Science JCNS and Peter Grünberg Institute PGI Forschungszentrum Jülich GmbHJulichGermany
  4. 4.Institut für Experimentalphysik/FestkörperphysikRuhr-Universität BochumBochumGermany

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