Stability of the Cationic Oxidation States in Pr0.50Sr0.50CoO3 across the Magnetostructural Transition by X-ray Absorption Spectroscopy
Jessica Padilla-Pantoja*, Javier Herrero-Martín, Pierluigi Gargiani, S. Manuel Valvidares, Vera Cuartero, Kurt Kummer, Oliver Watson, Nicholas B. Brookes, and José Luis García-Muñoz
Inorg. Chem., 2014, 53 (17), pp 8854–8858
The stability of the Pr valence and the role of the Pr−O bonds in the Pr-based cobaltite Pr0.50Sr0.50CoO3 across the unexpected magnetostructural transition were studied at low temperature. A complete X-ray absorption spectroscopy study as a function of temperature revealed the absence of charge transfer from Pr to Co sites and of spin-state transitions in the Co ions despite the strong Pr−O hybridization. Theoretical calculations support the experimental data.
Oxides for new-generation electronics