Kagome staircase compound Co3V2O8 in an applied magnetic field: single-crystal neutron-diffraction study

Details Kagome staircase compound Co3V2O8 in an applied magnetic field: single-crystal neutron-diffraction study Kagome staircase compound Co3V2O8 in an applied magnetic field: single-crystal neutron-diffraction study

2010-05-14

arxiv.org/abs/1005.2510v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures

Scientific paper

The magnetic properties of Co3V2O8 have been studied by single-crystal neutron-diffraction. In zero magnetic field, the observed broadening of the magnetic Bragg peaks suggests the presence of disorder both in the low-temperature ferromagnetic and in the higher-temperature antiferromagnetic state. The field dependence of the intensity and position of the magnetic reflections in Co3V2O8 reveals a complex sequence of phase transitions in this Kagome staircase compound. For H//a, a commensurate-incommensurate-commensurate transition is found in a field of 0.072 T in the antiferromagnetic phase at 7.5 K. For H//c at low-temperature, an applied field induces an unusual transformation from a ferromagnetic to an antiferromagnetic state at about 1 T accompanied by a sharp increase in magnetisation.

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