The influence of Pb composition on the upper critical magnetic field of Bi1.9−xPbxSb0.1Sr2Ca2Cu3Oy system
1989; Elsevier BV; Volume: 138; Issue: 3 Linguagem: Inglês
10.1016/0375-9601(89)90878-5
ISSN1873-2429
AutoresXianglei Mao, Hongbao Liu, Quan Du, Weijie Zhang, Zhiqiang Mao, Ling Zhou, Yu Wang, Yuheng Zhang,
Tópico(s)High-pressure geophysics and materials
ResumoAbstract Upper critical magnetic fields of the Bi 1.9− x Pb x Sb 0.1 Sr 2 Ca 2 Cu 3 O y system with x = 0.2, 0.3, 0.4 and 0.5 were measured by a magnetoresistance method with a pulsed magnetic field. The H c 2 (0) are estimated to be 181, 370, 416 and 195 T for x = 0.2, 0.3, 0.4 and 0.5 respectively. The variation of T c with x is comparatively small. The X-ray diffraction shows that there is no obvious change in structure. It suggests that the BiO plane in the system influences the superconductivity strongly.
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