paper

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

arXiv:1703.05476 · doi:10.7566/JPSJ.86.064703

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 $_{7}$ .

5 pages, 5 figures

Magnetic Structure and Dielectric State in the Multiferroic Ca2​CoSi2​O7​

Abstract

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