In a previous study, the long-time variation of the magnetic structure was investigated in the triangular lattice compound Ca3Co2O6 in zero magnetic field. In this study, the magnetic field and time variations of the magnetic structure have been studied by magnetization and neutron scattering measurements. The magnetization curve shows a multistep increase, which suggests the presence of successive transitions to different magnetic structures. However, magnetic Bragg peaks corresponding to the long-period antiferromagnetic structure persist up to a high magnetic field close to saturation magnetization. After the magnetic field is removed, a diffuse magnetic scattering signal due to shortrange correlations grows with time instead of the Bragg peaks owing to the antiferromagnetic structure in the initial state. A model to account for the magnetic field and time variations of the magnetic structure is presented.
ASJC Scopus subject areas
- Physics and Astronomy(all)