Valence change of praseodymium in Pr0.5Ca0.5CoO3 investigated by x-ray absorption spectroscopy

@inproceedings{HerreroMartin2011ValenceCO,
  title={Valence change of praseodymium in Pr0.5Ca0.5CoO3 investigated by x-ray absorption spectroscopy},
  author={Javier Herrero-Mart'in and Jos'e Luis Garc'ia-Munoz and Sergio Valencia and Carlos Frontera and Javier Blasco and Aura J. Bar'on-Gonz'alez and G. Sub'ias and R Abrudan and Florin A. Radu and Esther Dudzik and Ralf Feyerherm},
  year={2011}
}
X-ray absorption spectroscopy measurements in Pr0.5Ca0.5CoO3 were performed at the Pr M4,5, Pr L3, and Ca L2,3 absorption edges as a function of temperature below 300 K. Ca spectra show no changes down to 10 K while a noticeable thermally dependent evolution takes place at the Pr edges across the metal-insulator transition. Spectral changes are analyzed by different methods, including multiple scattering simulations, which provide quantitative details on an electron loss at Pr 4f orbitals. We… CONTINUE READING

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