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Unconventional magnetic properties of the weakly ferromagnetic metal BaIrO_3

M. L. Brooks·S. J. Blundell·T. Lancaster·W. Hayes·F. L. Pratt·P. P. C. Frampton·P. D. Battle
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Abstract

We present experimental evidence for small-moment magnetism below the ferromagnetic transition temperature (T_c3 = 183 K) in the quasi-one-dimensional metal BaIrO_3. Further, we identify rearrangement of the local magnetic moment distribution, which leaves the bulk magnetization unchanged, at the Mott-like transition (T_c1 = 26 K). These results are only possible via muon-spin relaxation ($μ$SR) techniques, since neutron scattering studies are hindered by the large absorption of neutrons by Ir. The low temperature characteristics of this compound, as revealed by $μ$SR, are unconventional, and suggest that its magnetic properties are driven by changes occuring at the Fermi surface due to the formation of a charge-density wave state.

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M. L. Brooks, S. J. Blundell, T. Lancaster, W. Hayes, F. L. Pratt, P. P. C. Frampton, P. D. Battle. 2005-04-06. Unconventional magnetic properties of the weakly ferromagnetic metal BaIrO_3. https://doi.org/10.1103/physrevb.71.220411

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