EuTiO 3 magnetic structure studied by neutron powder diffraction and resonant x-ray scattering

Valerio Scagnoli, Mattia Allieta, Helen Walker, Marco Scavini, Takuro Katsufuji, Leyre Sagarna, Oksana Zaharko, Claudio Mazzoli

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    Abstract

    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 EuTiO 3. 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 Néel temperature. Magnetoelastic coupling, if present, is therefore expected to be negligible.

    Original languageEnglish
    Article number094432
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume86
    Issue number9
    DOIs
    Publication statusPublished - 2012 Sep 26

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    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials

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