Step-like magnetization in a spin-chain system: Ca3Co2O6

Abstract

Due to a ferromagnetic in-chain coupling between Co${}^{3+}$ ions at trigonal sites, chains Co${}_2$O${}_6$ are considered as large rigid spin moments. The antiferromagnetic Ising model on the triangular lattice is applied to describe an interchain ordering. An evolution of metastable states in a sweeping magnetic field is investigated by the single-flip technique. At the first approximation two steps in the magnetization curve and a plateau at 1/3 of the saturation magnetization are found. Four steps in magnetization are determined in high-order approximations in agreement with experimental results.

4 pages, 4 figures, submitted to Phys. Rev. Lett

References in corpus (3)

• Specific heat and magnetization study on single crystals of a frustrated, quasi one-dimensional oxide: Ca3Co2O6
• Magnetic behavior of Co ions in the exotic spin-chain compound,Ca3Co2O6, from 59Co NMR studies
• The Origin of Magnetic Interactions in Ca3Co2O6

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