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  XAS spectra of Ce2[MnN3] at the Ce-M4,5, Ce-L3, MnL2.3 and N-K thresholds

Niewa, R., Hu, Z., Grazioli, C., Rößler, U., Golden, M. S., Knupfer, M., et al. (2002). XAS spectra of Ce2[MnN3] at the Ce-M4,5, Ce-L3, MnL2.3 and N-K thresholds. Journal of Alloys and Compounds, 346(1-2), 129-133. doi:10.1016/S0925-8388(02)00519-4.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0015-30D0-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0018-0330-2
Genre: Journal Article

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 Creators:
Niewa, R.1, Author              
Hu, Z.2, Author              
Grazioli, C., Author
Rößler, U., Author
Golden, M. S., Author
Knupfer, M., Author
Fink, J., Author
Giefers, H., Author
Wortmann, G., Author
de Groot, F. M. F., Author
DiSalvo, F. J., Author
Affiliations:
1Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
2Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863461              

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Free keywords: ternary nitrides; nitridomanganates; XAS; rare earth; electronic state
 Abstract: The X-ray absorption spectroscopy at the Ce-M-4.5, Ce-L-3, Mn- L-2,L-3 and N-K thresholds was used to study the electronic and magnetic structure of the recently obtained Ce-2[MnN3]. Manganese is found to be in a state similar to that in eta- Mn3N2, with strong covalency between Mn and N. The multiple peaked structure in the Ce-M-4.5 and Ce-L-3 XAS spectra indicates that the valence state of cerium in Ce-2[MnN3] is only slightly lower than that found in CeO2 containing Ce-IV with a strong covalent mixture between Ce 4f and ligand 2p states. By simulating the Ce-L-3 XAS spectrum using a simplified Anderson impurity model the 4f occupancy was found to be 0.52 for Ce-2 [MnN3] compared to 0.49 for CeO2 in the ground state. (C) 2002 Elsevier Science B.V. All rights reserved.

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Language(s): eng - English
 Dates: 2002-11-18
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 17901
ISI: 000179172500023
DOI: 10.1016/S0925-8388(02)00519-4
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Title: Journal of Alloys and Compounds
  Alternative Title : J. Alloy. Compd.
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 346 (1-2) Sequence Number: - Start / End Page: 129 - 133 Identifier: ISSN: 0925-8388