Multi-magnetic phases in Fe1−xNixTa2O6

X-ray, neutron diffraction and magnetic susceptibility are reported for FexNi1-xTa2O6 mixed oxides. X-ray refinement indicates homogeneous samples for all the reported concentrations. The neutron-diffraction measurements reveal magnetic structures with double propagation vectors. This system exhibit...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2008-07, Vol.320 (14), p.e125-e127
Main Authors: Oliveira Neto, S.R., Kinast, E.J., Isnard, O., Gusmão, M.A., dos Santos, C.A., da Cunha, J.B.M.
Format: Article
Language:English
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Summary:X-ray, neutron diffraction and magnetic susceptibility are reported for FexNi1-xTa2O6 mixed oxides. X-ray refinement indicates homogeneous samples for all the reported concentrations. The neutron-diffraction measurements reveal magnetic structures with double propagation vectors. This system exhibits at least two bicritical points at about x=0.15 and 0.60. For these concentrations, at low temperatures, the system shows the coexistence of two magnetic structures. This bicritical behaviour is interpreted as induced by competition between the different magnetic structures.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2008.02.027