Crystal structure and magnetic modulation in β−Ce2O2FeSe2
No Thumbnail Available
Date
2017-08-11
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract
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.
Description
Keywords
Antiferromagnetism, Phase transformations, Crystal structure, Spectroscopy, Crystallography, Magnetization, Neutron diffraction, Inorganic compounds, Polycrystals, Muon spin relaxation
Citation
Wang, C.-H., Ainsworth, C. M., Champion, S. D., Stewart, G. A., Worsdale, M. C., Lancaster, T., Blundell, S. J., Brand, H. E. A. & Evans, J. S. O. (2017). Crystal structure and magnetic modulation in β−Ce2O2FeSe2. Physical Review Materials, 1(3), 034403. doi.org/10.1103/PhysRevMaterials.1.034403