Título:
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NEXAFS experiment and multiple scattering calculations on KO_2: effects on the ? resonance in the solid phase
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Autores:
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Pedio, M. ;
Wu, Z. Y. ;
Benfatto, M. ;
Mascaraque Susunaga, Arantzazu ;
Michel, E. ;
Ottaviani, C. ;
Crotti, C. ;
Peloi, M. ;
Zacchigna, M. ;
Comicioli, C.
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Tipo de documento:
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texto impreso
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Editorial:
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American Physical Society, 2002-10-01
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física de materiales
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Tipo = Artículo
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Resumen:
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The high-energy resolution O K-edge absorption near-edge x-ray absorption fine structure spectrum has been measured for in situ prepared potassium superoxide. The experimental data have been analyzed in detail by multiple scattering calculations using self-consistent field potentials. In particular, the so-called ? resonance at the rising edge, which presents a double-peak structure, has been totally resolved and reproduced by the calculations. This analysis indicates that the grown material is arranged in a KO_2 structure with an O-O distance between 1.31 and 1.34 Angstrom. Moreover, the calculation demonstrates both a complete ionic character of the bound between the Oˆ(2-) anion and K atoms and a strong interaction between the anion and solid-state matrices.
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En línea:
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https://eprints.ucm.es/id/eprint/28402/1/Mascaraque%2CA%2031libre.pdf
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