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XAS study of Ru doped n=1, 2 Ruddlesden-Popper manganites

Abstract:: We report on the results of X-ray absorption near edge structure (XANES) studies at the Mn:L2,3, Ru:K and O:K edges of novel manganites, Sr2Mn0.5Ru0.5O4 and Sr3MnRuO7. Measurements were carried out on polycrystalline powder samples at room temperature. From the analysis of the XANES spectra the average manganese valences of 3.4 in bilayer Sr3MnRuO7 and 3.1 in single layer Sr2Mn0.5Ru0.5O4 are obtained. The corresponding average valences for Ru ions are 4.6 and 4.9, respectively. This indicates that Ru doping gives rise to a decrease of Mn valence, whereas Ru valence increases, compared to Mn(IV) and Ru(IV) in undoped compounds. The effect of charge disproportionation is stronger in the single layered compound than in the bilayered one. © 2007 Elsevier B.V. All rights reserved.

Publication status:: Published

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APA Style

Sikora, M., Oates, C., Szczerba, W., Kapusta, C., Zukrowski, J., Zajac, D., Borowiec, A., Ruiz-Bustos, R., Battle, P., & Rosseinsky, M. (2007). XAS study of Ru doped n=1, 2 Ruddlesden-Popper manganites. JOURNAL OF ALLOYS AND COMPOUNDS, 442(1-2), 265–267.

MLA Style

Sikora, M., et al. “XAS Study of Ru Doped n=1, 2 Ruddlesden-Popper Manganites.” JOURNAL OF ALLOYS AND COMPOUNDS, vol. 442, no. 1-2, 2007, pp. 265–67.

Chicago Style

Sikora, M, C Oates, W Szczerba, C Kapusta, J Zukrowski, D Zajac, A Borowiec, R Ruiz-Bustos, P Battle, and M Rosseinsky. 2007. “XAS Study of Ru Doped n=1, 2 Ruddlesden-Popper Manganites.” In JOURNAL OF ALLOYS AND COMPOUNDS, 442:265–67.
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Publisher copy:: 10.1016/j.jallcom.2006.06.115

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+ Sikora, M More by this author

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+ Oates, C More by this author

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+ Szczerba, W More by this author

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+ Kapusta, C More by this author

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+ Zukrowski, J More by this author

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Host title:: JOURNAL OF ALLOYS AND COMPOUNDS
Volume:: 442
Issue:: 1-2
Pages:: 265-267
Publication date:: 2007-09-13
DOI:: 10.1016/j.jallcom.2006.06.115
ISSN:: 0925-8388

Keywords:: EXAFS

NEXAFS

oxide materials
Pubs id:: pubs:40420
UUID:: uuid:02bcdff4-e560-4836-93a7-25a7d9d7b547
Local pid:: pubs:40420
Source identifiers:: 40420
Deposit date:: 2012-12-19

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Copyright date:: 2007

Licence:: Terms and Conditions of Use for Oxford University Research Archive

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