TY - GEN
T1 - Doping effect on the charge ordering in LuFe2O4
AU - Matsuo, Yoji
AU - Shinohara, Satoshi
AU - Mori, Shigeo
AU - Horibe, Yoichi
AU - Yoshii, Kenji
AU - Ikeda, Naoshi
N1 - Funding Information:
This work was supported by Grant-in-Aid for Scientific Researches from Ministry of Education, Culture, Sports, Science and Technology. One of the authors (S.M.) was supported by the IKETANI Scientific Foundation.
PY - 2006
Y1 - 2006
N2 - Change of the charge ordered (CO) structure by substituting Cu2+ for Fe2+ in LuFe2O4 was investigated by means of the transmission electron microscopy. The CO structure in LuFe 2O4 is characterized by the modulated structure with the wave vector of q=1/3[1-13/2] and the average size of the CO domains can be estimated to be about 10-20nm. On the contrary, the Cu substitution in LuFe 2O4 destroyed the CO structure drastically and induced characteristic local lattice distortion, which gives rise to characteristic diffuse scattering in the reciprocal space. High-resolution lattice images revealed that there exist nano-scale clusters, which are characterized as the short-range ordering of the Fe3+ and Cu2+ ions on the triangular lattice. In addition, the magnetic measurement revealed that LuFeCuO4 exhibits an antiferromagnetic transition around 50K, which is lower than the Neel temperature of 250K in LuFe2O4.
AB - Change of the charge ordered (CO) structure by substituting Cu2+ for Fe2+ in LuFe2O4 was investigated by means of the transmission electron microscopy. The CO structure in LuFe 2O4 is characterized by the modulated structure with the wave vector of q=1/3[1-13/2] and the average size of the CO domains can be estimated to be about 10-20nm. On the contrary, the Cu substitution in LuFe 2O4 destroyed the CO structure drastically and induced characteristic local lattice distortion, which gives rise to characteristic diffuse scattering in the reciprocal space. High-resolution lattice images revealed that there exist nano-scale clusters, which are characterized as the short-range ordering of the Fe3+ and Cu2+ ions on the triangular lattice. In addition, the magnetic measurement revealed that LuFeCuO4 exhibits an antiferromagnetic transition around 50K, which is lower than the Neel temperature of 250K in LuFe2O4.
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U2 - 10.1557/proc-0966-t03-04
DO - 10.1557/proc-0966-t03-04
M3 - Conference contribution
AN - SCOPUS:41049098269
SN - 9781604234183
T3 - Materials Research Society Symposium Proceedings
SP - 22
EP - 27
BT - Ferroelectrics and Multiferroics
PB - Materials Research Society
T2 - 2006 MRS Fall Meeting
Y2 - 27 November 2006 through 1 December 2006
ER -