Copper Valence Via Small Polaron Analysis in Sinter-Forged YBa sub 2 Cu sub 3 O/sub 7-Y/ at 700 deg C

摘要

Via electrical property measurements (conductivity, thermopower) at 700 deg C on sinter-forged YBa sub 2 Cu sub 3 O/sub 7-gamma/, it was determined that conduction occurs via small polaron conduction in the tetragonal phase. From the thermopower and oxygen content, the distribution of copper valence states was determined. 12 refs., 2 figs. (ERA citation 13:018635)