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arXiv · 1411.7555

Magnetostriction and ferroelectric state in AgCrS$_2$

Sergey V. Streltsov·Alexander I. Poteryaev·Alexey N. Rubtsov
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Abstract

The band structure calculations in the GGA+U approximation show the presence of additional lattice distortions in the magnetically ordered phase of AgCrS$_2$. The magnetostriction leads to formation of the long and short Cr-Cr bonds in the case when respective Cr ions have the same or opposite spin projections. These changes of the Cr lattice are accompanied by distortions of the CrS$_6$ octahedra, which in its turn leads to development of the spontaneous electric polarization.

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Sergey V. Streltsov, Alexander I. Poteryaev, Alexey N. Rubtsov. 2014-11-27. Magnetostriction and ferroelectric state in AgCrS$_2$. https://doi.org/10.1088/0953-8984%2F27%2F16%2F165601

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