Revised magnetic properties of CuFeO2 - a case of mistaken identity

Revised magnetic properties of CuFeO2 - a case of mistaken identity. Petrenko, O., A., Lees, M., R., Balakrishnan, G., de Brion, S., & Chouteau, G. Journal of Physics-Condensed Matter, 17(17):2741-2747, 2005.

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We propose a new model for the understanding of the magnetic properties of CuFeO2, which differs significantly from the generally accepted two-dimensional Ising model. We show that a Heisenberg model with a relatively weak anisotropy gives a much better description of all the magnetic data available for CuFeO2. The model is self-consistent; it allows one to determine for the first time a set of parameters for the exchange interactions and magnetic anisotropy in this frustrated magnetic system. The model is backed up by single-crystal measurements of susceptibility, magnetization and specific heat as a function of magnetic field and temperature.

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 abstract = {We propose a new model for the understanding of the magnetic properties of CuFeO2, which differs significantly from the generally accepted two-dimensional Ising model. We show that a Heisenberg model with a relatively weak anisotropy gives a much better description of all the magnetic data available for CuFeO2. The model is self-consistent; it allows one to determine for the first time a set of parameters for the exchange interactions and magnetic anisotropy in this frustrated magnetic system. The model is backed up by single-crystal measurements of susceptibility, magnetization and specific heat as a function of magnetic field and temperature.},
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 author = {Petrenko, O A and Lees, M R and Balakrishnan, G and de Brion, S and Chouteau, G},
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