1.7Pb0.3Sr2Ca2Cu3Oy BULK SUPERCONDUCTOR" />     c fluorine-doping Bi(Pb)SrCaCuO(F) bulk superconductor has been studied experimentally. It is shown that there are different H*∝(l-t)3/2 relations in various regions of magnetic fields, namely, H*=1590(1-t)3/2 in the field region below 120 Oe and H*= 35700(1-t)3/2 -2480 in the region above 120 Oe. We think that the irreversibility lines in low field and in high field represent the behaviour of weak link and the grain superconductivity respectively. We note that H*(T) is substantially a melting line of the flux lattice. It is in the vortex lattice state below the "irreversibility line" H*(T) and in the vortex liquid state between H*(T) and H(c2) (T) curves."/>     高T<sub>c</sub>氧化物超导体Bi(Pb)-Sr-Ca-Cu-O(F)的“不可逆线”
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物理学报  1991, Vol. 40 Issue (1): 117-121
凝聚物质:电子结构、电学、磁学和光学性质 当期目录| 下期目录| 过刊浏览| 高级检索     
高Tc氧化物超导体Bi(Pb)-Sr-Ca-Cu-O(F)的“不可逆线”
曹效文1, 冯尚申1, 高孝恢2, 蒋淑芬2, 韦钦2
(1)中国科学院等离子体物理研究所,合肥,230031; (2)中南工业大学,长沙,410083
THE "IRREVERSIBILITY LINE" OF FLUORINE-DOPING Bi1.7Pb0.3Sr2Ca2Cu3Oy BULK SUPERCONDUCTOR
CAO XIAO-WEN1, FENG SHANG-SHEN1, GAO XIAO-HUI2, JIANG SHU-FEN2, WEI QIN2
(1)中国科学院等离子体物理研究所,合肥,230031; (2)中南工业大学,长沙,410083

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