EFFECT OF PARTIAL SUBSTITUTION OF PB ON STRUCTURAL AND ELECTRICAL PROPERTIES OF HIGH TEMPERATURE TI2BA2CA2CU3O10+ SUPERCONDUCTORS

Abstract

ABSTRACT:The high Temperature (Tl2Ba2Ca2Cu3O10+) super conductors have beenprepared using solid state reaction method .With different annealing temperature 8100C to 890 0Cand two different hydraulic pressure 6 ton/cm2 to 9 ton/cm2 . It has been found that the optimum Tchas been obtained with pressure 8 ton / cm2 and 850 0C , So the critical temperature increased from124 K to 130 K . The partial substitution effect of the Pb in Ti metal of the compound as Ti2-xPbxBa2Ca2Cu3O10+ has been investigated where x = 0.05 , 0.1 , 0.2,0.3 and 0.4 the criticaltemperature increased from 130 K to136 K due to increasing oxygen content and increasing C-axis byusing X-ray diffraction .The study and examination of crystalline structure of samples by scanningelectron microscopie completed with investigation the rate of elements in compound and the effect ofannealing temperature with pressure in addition to partial substitution of elements of compound anddetermination the quantitative concentration rate of elements in the compound .