Magnetocrystalline anisotropy behavior in the multiferroic BiMnO 3 examined by Lorentz transmission electron microscopy

T. Asaka, M. Nagao, T. Yokosawa, K. Kokui, E. Takayama-Muromachi, K. Kimoto, K. Fukuda, Y. Matsui

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2 Citations (Scopus)

Abstract

We investigated magnetic domain structures of a multiferroic manganite, BiMnO 3, by Lorentz transmission electron microscopy. Ferromagnetic domains were observed below ∼105 K, close to the ferromagnetic Curie temperature, T C. The spontaneous magnetization aligns distinctly along the [010] direction, suggesting that the magnetic easy direction is along the b axis. Inflection and merging of the domain walls was observed at twin boundaries. This indicates pinning of the magnetic domain walls at crystallographic twin boundaries. Furthermore, we observed narrow magnetic domain walls, suggesting strong magnetocrystalline anisotropy.

Original languageEnglish
Article number052407
JournalApplied Physics Letters
Volume101
Issue number5
DOIs
Publication statusPublished - 2012 Jul 30
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    Asaka, T., Nagao, M., Yokosawa, T., Kokui, K., Takayama-Muromachi, E., Kimoto, K., Fukuda, K., & Matsui, Y. (2012). Magnetocrystalline anisotropy behavior in the multiferroic BiMnO 3 examined by Lorentz transmission electron microscopy. Applied Physics Letters, 101(5), [052407]. https://doi.org/10.1063/1.4742747