TY - JOUR
T1 - Upper critical field and critical current density in ceramic samples of Pb2Sr2Y0.5Ca0.5Cu3O8+δ
AU - Koike, Yoji
AU - Masuzawa, Masahiro
AU - Sunagawa, Hiromu
AU - Noji, Takashi
AU - Kawabe, Hisashi
AU - Kobayashi, Norio
AU - Saito, Yoshitami
PY - 1990/3
Y1 - 1990/3
N2 - The electrical resistance of ceramic samples Pb2Sr2Y0.5Ca0.5Cu3O8+δ with zero resistance at 75 K has been measured in magnetic fields up to 21 T. The superconducting transition curve becomes as broad in the field longitudinal to the current direction as in the transverse field. The value of -dHc2/dT is estimated as 1.7–1.8 T/K. The resistive tail in the lower portion of the transition curve is well expressed as ρ=ρ0 exp (-U0/kBT). The critical current density Jc shows hysteresis with respect to the magnetic field sweep, and is as low as 0.1 A ·cm-2 at 4.2 K in magnetic fields between 1 T and 13 T.
AB - The electrical resistance of ceramic samples Pb2Sr2Y0.5Ca0.5Cu3O8+δ with zero resistance at 75 K has been measured in magnetic fields up to 21 T. The superconducting transition curve becomes as broad in the field longitudinal to the current direction as in the transverse field. The value of -dHc2/dT is estimated as 1.7–1.8 T/K. The resistive tail in the lower portion of the transition curve is well expressed as ρ=ρ0 exp (-U0/kBT). The critical current density Jc shows hysteresis with respect to the magnetic field sweep, and is as low as 0.1 A ·cm-2 at 4.2 K in magnetic fields between 1 T and 13 T.
KW - Critical current density
KW - Electrical resistance
KW - High- T oxide superconductor
KW - PbSr YCaCu0
KW - PbSrACu0Pb-Sr-Y -Ca-Cu-0
KW - Superconducting fluctuation
KW - Superconducting transition temperature
KW - Thermally activated resistance
KW - Upper critical field
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U2 - 10.1143/JJAP.29.L408
DO - 10.1143/JJAP.29.L408
M3 - Article
AN - SCOPUS:0025401845
VL - 29
SP - L408-L411
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 3
ER -