EuTiO3 magnetic structure studied by neutron powder diffraction and resonant x-ray scattering

Article

关键词: FORBIDDEN REFLECTIONS;    DICHROISM;   

DOI  :  10.1103/PhysRevB.86.094432

来源: SCIE

【 摘 要 】

We combine neutron powder diffraction and x-ray single-crystal magnetic diffraction at the Eu L-2 edge to scrutinize the magnetic motif of the Eu ions in magnetoelectric EuTiO3. Our measurements are consistent with an antiferromagnetic G-type pattern with the Eu magnetic moments ordering along the a, b-plane diagonal. Recent reports of a novel transition at 2.75 K with a flop of magnetic moments upon poling the sample in an electric field cannot be confirmed for a nonpoled sample. Our neutron diffraction data do not show any significant change of the structure below the Neel temperature. Magnetoelastic coupling, if present, is therefore expected to be negligible.

【 授权许可】

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