ELECTRICAL-CONDUCTION IN THE SR1-XLAXTI1-XCOXO3 (X-LESS-THAN-0.40) SYSTEM

Direct current resistivity and the Seebeck coefficient (alpha) have be en measured in the temperature range 300-800 K for compositions x less -than-or-equal-to 0.40 in the Sr1-xLaxTi1-xCoxO3 system. Alternating c urrent conductivity has been measured as a function of frequency and t emperature. Positive values of alpha over the entire range of measurem ent show that holes are the majority charge carriers. Alternating curr ent conductivity shows that conduction occurs due to hopping of charge carriers among localized sites.