TY - JOUR
T1 - Magnetocrystalline anisotropy behavior in the multiferroic BiMnO 3 examined by Lorentz transmission electron microscopy
AU - Asaka, T.
AU - Nagao, M.
AU - Yokosawa, T.
AU - Kokui, K.
AU - Takayama-Muromachi, E.
AU - Kimoto, K.
AU - Fukuda, K.
AU - Matsui, Y.
PY - 2012/7/30
Y1 - 2012/7/30
N2 - 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.
AB - 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.
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U2 - 10.1063/1.4742747
DO - 10.1063/1.4742747
M3 - Article
AN - SCOPUS:84864701302
SN - 0003-6951
VL - 101
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 5
M1 - 052407
ER -