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Crystal structure and magnetic modulation in β−Ce2O2FeSe2

Wang, Chun-Hai; Ainsworth, C.M.; Champion, S.D.; Stewart, G.A.; Worsdale, M.C.; Lancaster, T.; Blundell, S.J.; Brand, Helen E.A.; Evans, John S.O.

Crystal structure and magnetic modulation in β−Ce2O2FeSe2 Thumbnail


Authors

Chun-Hai Wang

C.M. Ainsworth

S.D. Champion

G.A. Stewart

M.C. Worsdale

S.J. Blundell

Helen E.A. Brand

John S.O. Evans



Abstract

We report a combination of X-ray and neutron diffraction studies, Mossbauer spectroscopy and muon spin relaxation (muSR) measurements to probe the structure and magnetic properties of the semiconducting beta-Ce2O2FeSe2 oxychalcogenide. We report a new 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 ~ 330 K. Susceptibility measurements, Mossbauer and muSR reveal antiferromagnetic ordering below TN = 86 K and more complex short range order above this temperature. 12 K neutron diffraction data reveal a modulated magnetic structure with q = 0.444 bN*.

Citation

Wang, C., Ainsworth, C., Champion, S., Stewart, G., Worsdale, M., Lancaster, T., …Evans, J. S. (2017). Crystal structure and magnetic modulation in β−Ce2O2FeSe2. Physical Review Materials, 1(3), Article 034403. https://doi.org/10.1103/physrevmaterials.1.034403

Journal Article Type Article
Acceptance Date Jun 30, 2017
Online Publication Date Aug 11, 2017
Publication Date Aug 11, 2017
Deposit Date Sep 4, 2017
Publicly Available Date Mar 28, 2024
Journal Physical Review Materials
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 1
Issue 3
Article Number 034403
DOI https://doi.org/10.1103/physrevmaterials.1.034403
Related Public URLs https://arxiv.org/abs/1707.01188

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Copyright Statement
Reprinted with permission from the American Physical Society: Wang, Chun-Hai, Ainsworth, C. M., Champion, S. D., Stewart, G. A., Worsdale, M. C., Lancaster, T., Blundell, S. J., Brand, Helen E. A. & Evans, John S. O. (2017). Crystal structure and magnetic modulation in β−Ce2O2FeSe2. Physical Review Materials 1(3): 034403 © 2017 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.





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