TY - JOUR
T1 - Negative magnetostrictive magnetoelectric coupling of BiFeO3
AU - Lee, Sanghyun
AU - Fernandez-Diaz, M. T.
AU - Kimura, H.
AU - Noda, Y.
AU - Adroja, D. T.
AU - Lee, Seongsu
AU - Park, Junghwan
AU - Kiryukhin, V.
AU - Cheong, S. W.
AU - Mostovoy, M.
AU - Park, Je Geun
PY - 2013/8/21
Y1 - 2013/8/21
N2 - How magnetoelectric coupling actually occurs on a microscopic level in multiferroic BiFeO3 is not well known. By using high-resolution single crystal neutron diffraction techniques, we have determined the electric polarization of each individual element of BiFeO3, and concluded that magnetostrictive coupling suppresses the electric polarization at the Fe site below TN. This negative magnetoelectric coupling appears to outweigh the spin current contributions arising from the cycloid spin structure, which should produce positive magnetoelectric coupling.
AB - How magnetoelectric coupling actually occurs on a microscopic level in multiferroic BiFeO3 is not well known. By using high-resolution single crystal neutron diffraction techniques, we have determined the electric polarization of each individual element of BiFeO3, and concluded that magnetostrictive coupling suppresses the electric polarization at the Fe site below TN. This negative magnetoelectric coupling appears to outweigh the spin current contributions arising from the cycloid spin structure, which should produce positive magnetoelectric coupling.
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U2 - 10.1103/PhysRevB.88.060103
DO - 10.1103/PhysRevB.88.060103
M3 - Article
AN - SCOPUS:84883396253
SN - 0163-1829
VL - 88
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 6
M1 - 060103
ER -