Influence of KClO sub(3) addition on the magnetic properties and microstructural morphology of Y sub((1-0.2x))Ba sub((2-0.2x))K sub(x)Cu sub(3)O sub(y) (x identical with 0 divided by 0.40) polycrystalline HTSC

摘要

The influence of KClO sub(3) addition on the AC complex susceptibility (X sub(ac)) and microstructural morphology of YBCO HTSC with nominal composition Y sub((1-0.2x))Ba sub((2-0.2x))K sub(x)Cu sub(3)O sub(y) (x identical with 0 divided by 0.40) were investigated. X sub(ac) was recorded as a function of temperature and of the concentration of KClO sub(3) in various AC magnetic fields up to 19 Oe. The data were analyzed using the relation h identical with a(1 - T sub(m)/T sub(c)) super(n). The results obtained showed that the presence of K- and Cl-containing impurities on the grain boundaries change the intergranular coupling and, within certain concentration limits, improves the superconducting parameters.