References
- N. Kimizuka, E. Muromachi, and K. Siratori, Handbook on the Physics and Chemistry of Rare Earths Vol. 13. Amsterdam: Elsevier Science, 283–384 (1990).
- N. Ikeda, H. Ohsumi, K. Ohwada, K. Ishii, T. Inami, K. Kakurai, Y. Murakami, K. Yoshii, S. Mori, Y. Horibe, and H. Kit, Ferroelectricity from iron valence ordering in the charge-frustrated system LuFe2O4. Nature, 436, 1136–1138 (2005).
- M. Angst, Ferroelectricity from iron valence ordering in rare earth ferrites?. Phys. Status Solidi RRL. 7, 383–400 (2013).
- J. Brink and D.I. Khomskii, Multiferroicity due to charge ordering. J. Phys.: Condens. Matter 20, 434217-1-12 (2008).
- Y. Yamada, K. Kitsuda, S. Nohdo, and N. Ikeda, Charge and spin ordering process in the mixed-valence system LuFe2O4: Charge ordering. Phys. Rev. B62, 12167–12174 (2000).
- J. Iida, M. Tanaka, Y. Nakagawa, S. Funahashi, N. Kimizuka, and S. Takekawa, Magnetization and Spin Correlation of Two-Dimensional Triangular Antiferromagnet LuFe2O4. J. Phys. Soc. Jpn. 62, 1723–1735 (1993).
- F. Wang, J. Kim, Y.-J. Kim, and G.D. Gu, Spin-glass behavior in LuFe2O4+δ. Phys. Rev. B80, . 024419-1-7 (2009).
- A.D. Christianson, M.D. Lumsden, M. Angst, Z. Yamani, W. Tian, R. Jin, E.A. Payzant, S.E. Nagler, B.C. Sales, and D. Mandrus, Three-Dimensional Magnetic Correlations in Multiferroic LuFe2O4. Phys. Rev. Lett. 100, . 107601-1-4 (2008).
- M. Michiuchi, Y. Yokota, T. Komatsu, H. Hayakawa, T. Kuroda, D. Maeda, Y. Matsuo, S. Mori, K. Yoshii, N. Hanasaki, T. Kambe, and N. Ikeda, Stoichiometric Study of the Dielectric and Magnetic Properties in Charge Frustrated System LuFe2O4. Ferroelectrics 378, 175–180 (2009).
- I. Hatta and A. Ikushima, Specific heat of NaNO2 near its transition points. J. Phys. Chem. Solids 34, 57–66 (1973).
- A. Ruff, S. Krohns, F. Schrettle, V. Tsurkan, P. Lunkenheimer, and A. Loidl, Absence of polar order in LuFe2O4. Eur. Phys. J. B85, . 290-1-6 (2012).
- M. Tanaka, J. Akimitsu, Y. Inada, N. Kimizuka, N. Shindo, and K. Siratori, Conductivity and specific heat anomalies at the low temperature transition in the stoichiometric YFe2O4. Solid State Commun. 44, 687–690 (1982).
- T. Mitsumura, M. Takesada, A. Onodera, Y. Fukada, T. Nagata, J. Kano, and N. Ikeda, Raman scattering study of multiferroic LuFe2O4. Presented at the 13th Int. Meet. on Ferroelectricity (IMF-13, Krakow, 2013).