Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-27T02:42:20.721Z Has data issue: false hasContentIssue false
  • English
  • Français

Doping Effect on the Charge Ordering in LuFe2O4

Published online by Cambridge University Press:  26 February 2011

Yoji Matsuo ,
Satoshi Shinohara ,
Shigeo Mori ,
Yoichi Horibe ,
Kenji Yoshii  and
Naoshi Ikeda
Yoji Matsuo
Affiliation:
[email protected], Osaka Prefecture University, Department of Physics, 1-1 Gakuen-cho, Sakai, Osaka, 599-8531, Japan, 81-72-254-9712, 81-72-254-9712
Satoshi Shinohara
Affiliation:
[email protected], Osaka Prefecture University, Department of Physics, 1-1 Gakuen-cho, Sakai, Osaka, 599-8531, Japan
Shigeo Mori
Affiliation:
[email protected], Osaka Prefecture University, Department of Physics, 1-1 Gakuen-cho, Sakai, Osaka, 599-8531, Japan
Yoichi Horibe
Affiliation:
[email protected], Rutgers University, Dept. of Physics & Astronomy, Piscataway, NJ, 08854, United States
Kenji Yoshii
Affiliation:
[email protected], JAERI, Mikazuki, Hyougo, 679-5148, Japan
Naoshi Ikeda
Affiliation:
[email protected], Okayama University, Department of Physics, Okayama, 700-8530, Japan
Get access

Abstract

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 LuFe2O4 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 Cu2+ substitution in LuFe2O4 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.

Keywords

ferroelectricitytransmission electron microscopy (TEM)Fe
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 966: Symposium T – Ferroelectrics and Multiferroics , 2006 , 0966-T03-04
Copyright
Copyright © Materials Research Society 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1] Fiebig, M., J. Phys. D, 38 (2005) R123–R152.Google Scholar
[2] Kimura, T. et al., Nature (London) 426, (2003), 55.Google Scholar
[3] Hur, N. et al., Nature (London) 429, (2004), 55.Google Scholar
[4] Ikeda, N., Mori, S. and Kohn, K., Ferroelectrics 314 (2005), 41.Google Scholar
[5] Kimizuka, N. and Katsura, T., J. Solid State Chem. 13, (1975), 176.Google Scholar
[6] Yamada, Y., Kitsuda, K., Nohdo, S. and Ikeda, N., Phys. Rev. B 62, (2000), 12167.Google Scholar
[7] Ikeda, N. et al., Nature (London) 436, (2005), 1136.Google Scholar
[8] Matsuo, Y. et al., J. Mag. Mag. Mat., (to be published).Google Scholar
[8] Matsuo, Y., Horibe, Y., Mori, S., Yoshii, K. and Ikeda, N.., (unpublished)Google Scholar
[9] Ikeda, N., Kohn, K., Himoto, E. and Tanaka, M., J. Phys. Soc. Jpn. 64, (1995), 4371.Google Scholar
[10] Todate, Y., Himoto, E., Kikuta, C. and Tanaka, M., Phys. Rev. B 57, (1998), 485.Google Scholar
[11] Mori, S. et al., Phys. Rev. B 67, (2003), 12403.Google Scholar
[12] Kimura, T. et al., Phys. Rev. Lett. 83, (1999), 4940.Google Scholar
[13] Kimura, T. et al., Phys. Rev. B 62, (2000), 15021.Google Scholar