Misra, S.; Prabhu, E.; Gnanasekar, K. I.; Jayaraman, V.; Chandramohan, P.; Srinivasan, M. P.; Gnanasekaran, T.
ABSTRACT
SrFe0.2-xTi0.8CoxO3-d(x = 0.05–0.2) were prepared by solid-state reaction method. Phase characterization
and lattice parameter evaluation were done by X-ray diffraction studies. Relative concentrations of
iron in various oxidation states in these compositions were estimated using Mossbauer spectroscopy.
Electrical conductivities of these bulk samples were measured in various ambient and
temperatures using AC impedance spectroscopy. SrFe0.15Ti0.8Co0.05O3-d
and SrTi0.8Co0.2O3-d have been found to
exhibit good change in electrical conductivity between 21% O2 and 10 ppm
O2 in argon.