Browsing by Author "Akaki, M."
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- ItemMagnetic structure and dielectric state in the multiferroic Ca2CoSi2O7(The Physical Society of Japan, 2017-05-10) Soda, M; Hayashida, S; Yoshida, T; Akaki, M.; Hagiwara, M; Avdeev, M; Zaharko, O; Masuda, TThe magnetic structure of the multiferroic Ca2CoSi2O7 was determined by neutron diffraction techniques. A combination of experiments on polycrystalline and single-crystal samples revealed a collinear antiferromagnetic structure with the easy axis along the 〈100〉 directions. The dielectric state is 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 is discussed in comparison with that of the isostructural Ba2CoGe2O7. ©2017 The Physical Society of Japan