Stability of the Cationic Oxidation States in Pr0.50Sr0.50CoO3 across the Magnetostructural Transition by X-ray Absorption Spectroscopy

ic-2013-03117j 0007

Jessica Padilla-Pantoja*Javier Herrero-MartínPierluigi GargianiS. Manuel ValvidaresVera CuarteroKurt KummerOliver WatsonNicholas B. Brookes, and José Luis García-Muñoz
Inorg. Chem., 2014, 53 (17), pp 8854–8858
DOI: 10.1021/ic403117j10.1021/ic403117j

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

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