Single crystal growth and structural evolution across the 1st order valence transition in (Pr1−yYy)1−xCaxCoO3-δ

Single crystals of (Pr0.85Y0.15)0.7Ca0.3CoO3-δ were grown in an IR image furnace under 40-60 bar pO2 pressure and characterized by magnetization, x-ray absorption spectroscopy, and single crystal x-ray diffraction.240