Low-temperature nuclear and magnetic structures of La2O2Se2.Fe2O from X-ray and neutron diffraction measurements

Abstract

This paper describes the low temperature nuclear and magnetic structures of La2O2Se2.Fe2O by analysis of X-ray and neutron diffraction data. The material has been demonstrated to order antiferromagnetically at low temperatures, with TN \approx 90 K a propagation vector of k = (1/2 0 1/2), resulting in a spin arrangement similar to that in FeTe, despite there being no apparent lowering in symmetry of the nuclear structure.

19 pages (including figures)

References in corpus (8)

• Magnetic Order versus superconductivity in the Iron-based layered La(O1-xFx)FeAs systems
• Structural and magnetic phase diagram of CeFeAsO1-xFx and its relationship to high-temperature superconductivity
• Incommensurate magnetic order in the alpha-Fe(Te,Se) superconductor systems
• Superconductivity at 25 K in hole doped $(L{a}_{1-x}S{r}_x)OFeAs$
• First-order magnetic and structural phase transitions in Fe${}_{1+y}$Se${}_x$Te${}_{1-x}$
• Crystal structure of the new FeSe1-x superconductor
• Lattice and Magnetic structures of PrFeAsO, PrFeAsO0.85F0.15 and PrFeAsO0.85
• Doping evoluton of antiferromagnetic order and structural distortion in LaFeAsO${}_{1-x}$F${}_x$

Cited by in corpus (3)

• Soft striped magnetic fluctuations competing with superconductivity in Fe_{1+x}Te
• Magnetism in La2O3(Fe1-xMnx)2Se2 tuned by Fe/Mn ratio
• Magnetic order and spin dynamics in La2O2Fe2OSe2 probed by 57Fe-Moessbauer, 139La-NMR, and muon spin relaxation spectroscopy