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High-pressure synthesis, characterization, and equation of state of double perovskite Sr sub(2)CoFeO sub(6)
Ist Teil von
Chinese physics B, 2015-01, Vol.24 (1), p.017503-1-017503-4
Erscheinungsjahr
2015
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Double perovskite oxide Sr sub(2)CoFeO sub(6) (SCFO) has been obtained using a high-pressure and high-temperature (HPHT) synthesis method. Valence states of Fe and Co and their distributions in SCFO were examined with X-ray photoelectron spectroscopy. The electric transport behavior of SCFO showed a semiconductor behavior that can be well described by Mott's law for variable-range hopping conduction. The structural stability of SCFO was investigated at pressures up to 31 GPa with no pressure-induced phase transition found. Bulk modulus B sub(0) was determined to be 163(2) GPa by fitting the pressure-volume data to the Birch-Murnaghan equation of state.