Alternating current susceptibility measurements of inter-grain critical current density in sintered Bi1.8Pb0.2Sr2Ca2Cu3Oy
作者： Y Kimishima , K Inagaki , K Tanabe , Y Ichiyanagi
DOI: 10.1088/0953-2048/13/3/307
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摘要: The critical index of inter-grain penetration field Hp * was estimated for sintered Bi1.8 Pb0.2 Sr2 Ca2 Cu3 Oy high Tc superconductor by ac magnetic susceptibilities . 0 ´, real part the linear , showed two successive diamagnetic transitions at = 107.8 K and 104.6 intra- parts, respectively. Below ´´, imaginary appeared had a positive peak. temperature dependences ´´ below were analysed Bean state model slab geometry on basis qualitative agreements third harmonic components, 2 ´ obtained well reproduced results ´. current density Jc as 2.8 from relation (1-T /Tc ) large value significant present Bi2223 ceramics.
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