TY - JOUR
T1 - EuTiO 3 magnetic structure studied by neutron powder diffraction and resonant x-ray scattering
AU - Scagnoli, Valerio
AU - Allieta, Mattia
AU - Walker, Helen
AU - Scavini, Marco
AU - Katsufuji, Takuro
AU - Sagarna, Leyre
AU - Zaharko, Oksana
AU - Mazzoli, Claudio
PY - 2012/9/26
Y1 - 2012/9/26
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.86.094432
DO - 10.1103/PhysRevB.86.094432
M3 - Article
AN - SCOPUS:84867004337
VL - 86
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 9
M1 - 094432
ER -