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

D H Ryan; Nadejda Mas; R A Susilo; J M Cadogan; R Flacau

doi:10.1088/0953-8984/27/14/146005

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

J Phys Condens Matter. 2015 Apr 15;27(14):146005. doi: 10.1088/0953-8984/27/14/146005. Epub 2015 Mar 20.

Authors

D H Ryan¹, Nadejda Mas, R A Susilo, J M Cadogan, R Flacau

Affiliation

¹ Department of Physics, McGill University, Montreal, Québec H3A 2T8, Canada.

PMID: 25791510
DOI: 10.1088/0953-8984/27/14/146005

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.