Browsing by Author "Champion, SD"

Now showing 1 - 1 of 1
  • No Thumbnail Available
    Item
    Crystal structure and magnetic modulation in β−Ce2O2FeSe2
    (American Physical Society, 2017-08-11) Wang, CH; Ainsworth, CM; Champion, SD; Stewart, GA; Worsdale, MC; Lancaster, T; Blundell, SJ; Brand, HEA; Evans, JSO
    We report a combination of x-ray and neutron diffraction studies, Mössbauer spectroscopy, and muon spin relaxation (μ+SR) measurements to probe the structure and magnetic properties of the semiconducting β-Ce2O2FeSe2 oxychalcogenide. We report a structural description in space group Pna21 which is consistent with diffraction data and second harmonic generation measurements and reveal an order-disorder transition on one Fe site at TOD≈330K. Susceptibility measurements, Mössbauer, and μ+SR reveal antiferromagnetic ordering below TN=86K and more complex short range order above this temperature. 12 K neutron diffraction data reveal a modulated magnetic structure with q=0.444bN∗. © 2017 American Physical Society.