TY - JOUR
T1 - Magnetic flux penetration and distribution in Bi2Sr2CaCu2Oy single crystals by magnetooptical measurements
AU - Yang, Guang
AU - Abell, John
AU - Gough, Colin
PY - 2000/11/1
Y1 - 2000/11/1
N2 - Magnetic flux penetration and flux density distributions in Bi2Sr2CaCu2Oy single crystals have been investigated by the magneto-optical technique. In as-grown crystals, preferential flux penetration along narrow bands in the a-direction is observed, independent of the geometry of the crystals. On annealing in flowing oxygen, flux penetration becomes more uniform but significantly anisotropic. Comparison with ac susceptibility measurements near Tc, suggests that inhomogeneous flux penetration in the as-grown crystals may be associated with inhomogeneous oxygen stoichiometry.
AB - Magnetic flux penetration and flux density distributions in Bi2Sr2CaCu2Oy single crystals have been investigated by the magneto-optical technique. In as-grown crystals, preferential flux penetration along narrow bands in the a-direction is observed, independent of the geometry of the crystals. On annealing in flowing oxygen, flux penetration becomes more uniform but significantly anisotropic. Comparison with ac susceptibility measurements near Tc, suggests that inhomogeneous flux penetration in the as-grown crystals may be associated with inhomogeneous oxygen stoichiometry.
U2 - 10.1016/S0921-4534(00)00798-X
DO - 10.1016/S0921-4534(00)00798-X
M3 - Article
SN - 0921-4534
VL - 341-8
SP - 1091
EP - 1092
JO - Physica C Superconductivity
JF - Physica C Superconductivity
IS - 2
ER -