Structural and magnetic characterisation of iron oxyselenides Ce2O2Fe2OSe2 and Nd2O2Fe2OSe2

Emma E. McCabe; Andrew S. Wills; Laurent Chapon; Pascal Manuel; John S. O. Evans

Structural and magnetic characterisation of iron oxyselenides Ce2O2Fe2OSe2 and Nd2O2Fe2OSe2

Strongly Correlated Electrons 2014-10-21 v1

Authors: Emma E. McCabe , Andrew S. Wills , Laurent Chapon , Pascal Manuel , John S. O. Evans

Abstract

We present here an investigation of the magnetic ordering in the Mott insulating oxyselenide materials Ln2O2Fe2OSe2 (Ln = Ce, Nd). Neutron powder diffraction data are consistent with a non-collinear multi-k ordering on the iron sublattice structure and analysis indicates a reduced magnetic correlation length perpendicular to the [Fe2O]2+ layers. The magnetic role of the Ln3+ cations is investigated and Ce3+ moments are found to order for T < 16 K.

Keywords

iron oxyselenides magnetic ordering neutron powder diffraction non-collinear multi-k ordering Mott insulator Ce2O2Fe2OSe2 Nd2O2Fe2OSe2

Cite

@article{arxiv.1410.4990,
  title  = {Structural and magnetic characterisation of iron oxyselenides Ce2O2Fe2OSe2 and Nd2O2Fe2OSe2},
  author = {Emma E. McCabe and Andrew S. Wills and Laurent Chapon and Pascal Manuel and John S. O. Evans},
  journal= {arXiv preprint arXiv:1410.4990},
  year   = {2014}
}

Comments

8 pages, 5 figures, accepted for publication in Phys. Rev. B

Related papers

View all related →