Local Environment and Electronic Structure in K2NiF4-type La2Li0.50Cu0.50O4 Doped by 57Fe
BARANOV, Alexey
Chair of Radiochemistry, Department of Chemistry
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
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Chair of Radiochemistry, Department of Chemistry
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
BARANOV, Alexey
Chair of Radiochemistry, Department of Chemistry
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
< Leer menos
Chair of Radiochemistry, Department of Chemistry
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Idioma
en
Article de revue
Este ítem está publicado en
Zeitschrift fur Naturforschung B. 2008, vol. 63, n° 3, p. 244-250
Verlag der Zeitschrift Fuer Naturforschung
Resumen en inglés
The 57Fe M¨ossbauer spectrum of the oxide La2Li0.50Cu0.50O4 doped with 57Fe (1 at.-%) underlines at 300 K the presence of three different components: two corresponding to the substitution of 57Fe probe atoms for respectively ...Leer más >
The 57Fe M¨ossbauer spectrum of the oxide La2Li0.50Cu0.50O4 doped with 57Fe (1 at.-%) underlines at 300 K the presence of three different components: two corresponding to the substitution of 57Fe probe atoms for respectively “Cu3+” [Fe(1)] and Li+ [Fe(3)] and the third [Fe(2)] attributed to 57Fe associated with oxygen vacancies. A decrease of the temperature down to 77 K does not lead to essential changes of the M¨ossbauer parameters corresponding to the Fe(1) and Fe(2) sub-spectra. On the contrary, a drastic change occurs in the Fe(3) sub-spectrum which has been interpreted by a displacement of the charge-transfer equilibrium Fe4+(3) + O2− →Fe3+(3) + O(L) at the Li+ sites.< Leer menos
Palabras clave en inglés
Solid state
Electronic structure
57Fe Mössbauer spectroscopy
K2NiF4-type Compound
Orígen
Importado de HalCentros de investigación