Formation of magnetic domains and domain walls in epitaxial Fe3O4(100) elements

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2011
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Hartung, C.
Backes, Dirk
Heyderman, Laura Jane
Nolting, Frithjof
Fraile Rodríguez, Arantxa
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Magnetic domains and domain walls in epitaxial Fe3O4(100) elements (rings and wires) are imaged using magnetic force microscopy and photoemission electron microscopy. We show that the interplay between the four-fold magnetocrystalline anisotropy and the shape determines the equilibrium domain structure. Domain walls with a characteristic zig-zag structure are observed in Fe3O4(100) elements initially magnetized along one of the magnetocrystalline hard axes. We attribute the formation of zig-zag domain walls to the competition of the four-fold magnetocrystalline anisotropy, the exchange and dipolar coupling. A direct correlation between the wire width and the spin structure of zig-zag domain walls is found.

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ISO 690FONIN, Mikhail, C. HARTUNG, Ulrich RÜDIGER, Dirk BACKES, Laura Jane HEYDERMAN, Frithjof NOLTING, Arantxa FRAILE RODRÍGUEZ, Mathias KLÄUI, 2011. Formation of magnetic domains and domain walls in epitaxial Fe3O4(100) elements. In: Journal of Applied Physics. 2011, 109(7), 07D315. ISSN 0021-8979. Available under: doi: 10.1063/1.3540678
BibTex
@article{Fonin2011Forma-16871,
  year={2011},
  doi={10.1063/1.3540678},
  title={Formation of magnetic domains and domain walls in epitaxial Fe3O4(100) elements},
  number={7},
  volume={109},
  issn={0021-8979},
  journal={Journal of Applied Physics},
  author={Fonin, Mikhail and Hartung, C. and Rüdiger, Ulrich and Backes, Dirk and Heyderman, Laura Jane and Nolting, Frithjof and Fraile Rodríguez, Arantxa and Kläui, Mathias},
  note={Article Number: 07D315}
}
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