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Periodic instantons and domain structure in a ferromagnetic film

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Abstract.

We in this paper study periodic instantons and domain structures in a theoretical film consisting of biaxial-anisotropic ferromagnets. In a proper approximation the equation of motion of the magnetization vector as a space-time function in the film is reduced to the 1 + 2-dimensional sine-Gordon field equation in strong anisotropy limit. Static periodic instantons, which are solutions of Euclidean field equantion, and various new domain structures are obtained analytically. We also investigate the energy density and stability of the periodic instantons.

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Authors and Affiliations

  1. Institute of Theoretical Physics and Department of Physics, Shanxi University, 030006, Taiyuan, Shanxi, P.R. China

    G.-P. Zheng, J.-Q. Liang, Y.-H. Nie & W. Yin

  2. Department of Physics, Yanbei Normal Institute, 037000, Datong, Shanxi, P.R. China

    Y.-H. Nie

Authors
  1. G.-P. Zheng
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  2. J.-Q. Liang
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  3. Y.-H. Nie
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  4. W. Yin
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Corresponding author

Correspondence to G.-P. Zheng.

Additional information

Received: 6 August 2003, Published online: 8 December 2003

PACS:

05.45.Yv Solitons - 75.70.Kw Domain structure (including magnetic bubbles)

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Zheng, GP., Liang, JQ., Nie, YH. et al. Periodic instantons and domain structure in a ferromagnetic film. Eur. Phys. J. B 36, 215–220 (2003). https://doi.org/10.1140/epjb/e2003-00338-5

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  • DOI: https://doi.org/10.1140/epjb/e2003-00338-5

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