Ak. Pradhan et al., EFFECTS OF 200-MEV AG-ION IRRADIATION ON MAGNETIZATION IN A BI2SR2CACU2O8-CRYSTAL(Y SINGLE), Physical review. B, Condensed matter, 53(5), 1996, pp. 2269-2272
We report a dramatic change in the magnetization double peak anomaly a
nd irreversibility line of a Bi2Sr2CaCu2O8+y [BSCCO(2212)] single crys
tal after irradiation with 200-MeV Ag ions. We found that the partial
destruction and ineffectiveness of dislocation networks in the CuO2 pl
anes of the BSCCO crystal after irradiation are responsible for the di
sappearance of the double peak anomaly. Ag irradiation induces damage
in the form of columnar defects which cause an enhancement of flux pin
ning and a shift in the irreversibility line towards higher temperatur
es.