Determination of the magnetic structure of Gd₂Fe₂Si₂C by Mössbauer spectroscopy and neutron diffraction

Journal of Physics. Condensed Matter : an Institute of Physics Journal
D H RyanRoxana Flacau

Abstract

We have determined the magnetic structure of the intermetallic compound Gd2Fe2Si2C using neutron powder diffraction, (155)Gd and (57)Fe Mössbauer spectroscopy. This compound crystallizes in a monoclinic (C2/m) structure and its magnetic structure is characterized by antiferromagnetic order of the Gd sublattice along the b-axis, with cell-doubling along the c-axis. The propagation vector is k = [0 0 ½]. At 3.6 K the Gd moment reaches 6.2(2) μ(B). Finally, (57)Fe Mössbauer spectroscopy shows no evidence of magnetic ordering of the Fe sublattice.

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Mar 25, 2009·Journal of Physics. Condensed Matter : an Institute of Physics Journal·J M CadoganL M D Cranswick

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