One-dimensional short-range magnetic correlations in the magnetoelectric pyroxeneCaMnGe2O6 | Zendy

Lei Ding | Zendy; Claire V. Colin | Zendy; Céline Darie | Zendy; J. Robert | Zendy; Frédéric Gay | Zendy; P. Bordet | Zendy

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One-dimensional short-range magnetic correlations in the magnetoelectric pyroxeneCaMnGe2O6

Author(s) -

Lei Ding,

Claire V. Colin,

Céline Darie,

J. Robert,

Frédéric Gay,

P. Bordet

Publication year - 2016

Publication title -

physical review. b./physical review. b

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.78

H-Index - 465

eISSN - 2469-9969

pISSN - 2469-9950

DOI - 10.1103/physrevb.93.064423

Subject(s) - antiferromagnetism , condensed matter physics , magnetic susceptibility , materials science , physics , crystallography , chemistry

International audienceWe have investigated the magnetic and magnetoelectric properties of CaMnGe2O6 by means of powder neutron diffraction, magnetic susceptibility, heat capacity, and electrical polarization measurements. The presence of one-dimensional short-range magnetic correlations within the MnO6 octahedra chains well above long-range antiferromagnetic ordering (15 K) was evidenced. A one-dimensional antiferromagnetic correlation model along the zigzag chains was developed to fit the diffuse magnetic scattering. The linear magnetoelectric effect and pertinent ferrotoroidicity, allowed by the magnetic symmetry (C2′/c), have been verified experimentally and theoretically

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