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arXiv · 1705.03234

The origin of fine structure in magnetization curve of $α$-CoV$_2$O$_6$

Yu. B. Kudasov·R. V. Kozabaranov
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Abstract

Multiple field-induced plateaus in $α$-CoV$_2$O$_6$ at low temperatures were revealed earlier by M. Lenertz et al. [J. Phys. Chem. C 115, 17190 (2011)] and carefully investigated recently by M. Nandi and P. Mandal [J. Appl. Phys. 119, 133904 (2016)]. Four equidistant steps were observed in the magnetization curve. We present a model to describe this phenomenon. A magnetic structure of this substance is formed by highly anisotropic triangular lattice of Ising chains running along the $\bf{b}$ axis. Due to a three-fold degeneracy of three-sublattice magnetic ordering, domain boundaries appear. Their transformation under magnetic field variation leads to two additional steps in the 1/3 magnetization plateau and gives rise to complex magnetic behavior observed experimentally. The domain structure in $α$-CoV$_2$O$_6$ occurs to be strongly anisotropic because a lifetime of the metastable states depends greatly on the configuration orientation. A strong dependence of the magnetization curve on magnetic field sweep time is predicted.

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Yu. B. Kudasov, R. V. Kozabaranov. 2017-08-06. The origin of fine structure in magnetization curve of $α$-CoV$_2$O$_6$. https://doi.org/10.1051/epjconf%2F201818503002

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