Kılıç, AtillaKılıç, KıvılcımYetiş, HakanOlutaş, MuratAltınkök, AtılganSözeri, HüseyinÇetin, Oktay2021-06-232021-06-2320061434-60281434-6036https://doi.org/10.1140/epjb/e2006-00180-3https://hdl.handle.net/20.500.12491/5906The flux dynamics in a polycrystalline sample of Bi1.7Pb0.3Sr2Ca2Cu3Ox with a macroscopic cylindrical hole (CH) drilled was investigated by slow transport relaxation (V-t curves) and magnetovoltage measurements (V-H curves). It was monitored that there are several discontinuities in the time evolution of quenched state in V-t curves, which was attributed to the leaving of quantized flux lines trapped through CH together with surface superconducting effects. We observed that asymmetric V-H curves demonstrate unusual remarkable counter clockwise hysteresis effects upon cycling of field. This interesting result was correlated mainly to the flux trapping inside the CH that acts as a macroscopic attractive pinning center for flux lines. Further, the hysteresis effects in V-H curves for a fixed transport current provide a direct evidence that the number of flux lines, measured dissipation and relative decrease/increase in irreversibilities could be determined by sweeping rate of external magnetic field (dH/dt) which leads also to peculiar time effects.eninfo:eu-repo/semantics/closedAccessFlux TrappingDrillingMacroscopic Cylinderical HoleHysteresisArticle10.1140/epjb/e2006-00180-35045655692-s2.0-33646778136Q3WOS:000237649900006Q2