High oxygen pressures and the stabilization of the highest oxidation states of transition metals - Mössbauer spectroscopic characterization of the induced electronic phenomena
Idioma
en
Article de revue
Este ítem está publicado en
Zeitschrift fur Naturforschung B. 2006, vol. 61, n° 12, p. 1527-1540
Verlag der Zeitschrift Fuer Naturforschung
Resumen en inglés
High oxygen pressures are a fruitful tool for the stabilization of the highest formal oxidation states of transition metals (Mn+) leading to the strongest chemical bonds; the improvement of the Mn+–O bond covalency induces ...Leer más >
High oxygen pressures are a fruitful tool for the stabilization of the highest formal oxidation states of transition metals (Mn+) leading to the strongest chemical bonds; the improvement of the Mn+–O bond covalency induces different electronic phenomena. Among the physical characterizations applied to investigate such phenomena, 57Fe and 119Sn M¨ossbauer spectra are evaluated for studying unusual electronic configurations, orbital ordering, charge disproportionation and insulator-metal transitions in the perovskites series of 57Fe doped RENiO3 nickelates (RE = rare earths, Y and Tl) and 119Sn doped AEFeO3 ferrates (AE = Ca, Sr).< Leer menos
Palabras clave en inglés
Oxygen pressure
High oxidation states
Mössbauer spectroscopy
Electronic configuration
Orbital ordering
Charge disproportionation
Insulator metal
Metal transition
Orígen
Importado de HalCentros de investigación