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

Abstract

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.

4 pages, 5 figures

References in corpus (11)

• Magnetically driven ferroelectric order in Ni${}_3$V${}_2$O${}_8$
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Cited by in corpus (5)

• Electronic structure of the kagome staircase compounds Ni3V2O8 and Co3V2O8
• Spin-orbit transitions in $\alpha$ and $\gamma$-CoV${}_2$O${}_6$
• Evolution of the commensurate and incommensurate magnetic phases of the S = 3/2 kagome staircase Co3V2O8 in an applied field
• Quantum phase transitions and decoupling of magnetic sublattices in the quasi-two-dimensional Ising magnet Co3V2O8 in a transverse magnetic field
• Magnetic Order and Fluctuations in the Presence of Quenched Disorder in the Kagome Staircase System (Co(1-x)Mg(x))3V2O8