Magnetic Structure and Dielectric State in the Multiferroic Ca$_{2}$CoSi$_{2}$O$_{7}$

Minoru Soda; Shohei Hayashida; Toshiya Yoshida; Mitsuru Akaki; Masayuki Hagiwara; Maxim Avdeev; Oksana Zaharko; Takatsugu Masuda

doi:10.7566/jpsj.86.064703

arXiv · 1703.05476

Magnetic Structure and Dielectric State in the Multiferroic Ca$_{2}$CoSi$_{2}$O$_{7}$

Minoru Soda·Shohei Hayashida·Toshiya Yoshida·Mitsuru Akaki·Masayuki Hagiwara·Maxim Avdeev·Oksana Zaharko·Takatsugu Masuda

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Abstract

Magnetic structure of the multiferroic Ca$_{2}$CoSi$_{2}$O$_{7}$ was determined by neutron diffraction techniques. Combination of the polycrystalline and single-crystal samples experiments revealed a collinear antiferromagnetic structure with the easy axis along $<$100$>$ directions. The dielectric state was discussed in the framework of the spin-dependent $d$-$p$ hybridization mechanism, leading to the realization of the antiferroelectric structure. The origin of the magnetic anisotropy was discussed in comparison with the isostructural Ba$_{2}$CoGe$_{2}$O$_{7}$.

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Minoru Soda, Shohei Hayashida, Toshiya Yoshida, Mitsuru Akaki, Masayuki Hagiwara, Maxim Avdeev, Oksana Zaharko, Takatsugu Masuda. 2017-03-16. Magnetic Structure and Dielectric State in the Multiferroic Ca$_{2}$CoSi$_{2}$O$_{7}$. https://doi.org/10.7566/jpsj.86.064703

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