Title :
Suppression of intra- and intergranular properties by transport current in Bi-based ceramic superconductors
Author :
Grishin, A.M. ; Korenivski, V.N. ; Rao, K.V. ; Ulyanov, A.N.
Author_Institution :
Donetsk Inst. of Phys. & Technol., Ukraine
fDate :
9/1/1992 12:00:00 AM
Abstract :
The influence of a direct transport current Idc on the diamagnetic response of Bi2Sr 2Ca2Cu3Oy ceramics as a function of temperature T has been investigated experimentally. The real χ\´(T) and imaginary χ"(T) parts of AC susceptibility shift toward lower temperatures, and the hysteretic loss values decrease as Idc increases. In contrast to what is observed with increasing exciting magnetic field Hac, increase of Idc does not broaden the transition regimes in χ\´(T) and χ"(T )
Keywords :
bismuth compounds; calcium compounds; ceramics; diamagnetic properties of substances; high-temperature superconductors; magnetic hysteresis; magnetic susceptibility; strontium compounds; AC susceptibility shift; Bi2Sr2Ca2Cu3Oy; diamagnetic response; high-temperature superconductors; intergranular properties; intragranular properties; transition regimes; transport current; Annealing; Ceramics; Granular superconductors; Magnetic fields; Magnetic hysteresis; Physics; Slabs; Superconductivity; Temperature dependence; Wire;
Journal_Title :
Magnetics, IEEE Transactions on
