Space resolved optical spectroscopy on Fe-doped SrTiO3 single crystals
![Fig. 1: Concentration profiles and false-color images (insets) of a Fe-doped SrTiO3 single crystal sample after pO2 change at elevated temperatures. (a) surface reaction (b) bulk diffusion (c) transport across grain boundary is limiting.](/6276076/original-1518447062.jpg?t=eyJ3aWR0aCI6MjQ2LCJvYmpfaWQiOjYyNzYwNzZ9--913a4069e9d0e0d763b8bd42a8cb8f10bc2ceb91)
Fig. 1: Concentration profiles and false-color images (insets) of a Fe-doped SrTiO3 single crystal sample after pO2 change at elevated temperatures. (a) surface reaction (b) bulk diffusion (c) transport across grain boundary is limiting.
![Fig. 2: Increase of pH2O from 4 to 20 mbar, monitored by optical spectroscopy and electrical conductivity](/6276088/original-1518447062.jpg?t=eyJ3aWR0aCI6MjQ2LCJvYmpfaWQiOjYyNzYwODh9--6641209fb5d5db0804b203f199d95290fd1f8b28)
Fig. 2: Increase of pH2O from 4 to 20 mbar, monitored by optical spectroscopy and electrical conductivity