ISSN
2231–4202  (Print)                
2249–9970  (Online)             
Peer Reviewed and Refereed Journal


JPAST is a Peer Reviewed & Refereed biannual multidisciplinary journal starting from July 2011. Articles are invited for July 22 issue.
Volume 10, Issue 1, Pages 20-22, January 2020

Temperature Dependence of Electrical Resistivity for pure and Ag Doped Bi-Pb-Sr-Ca-Cu-O Superconductor

Dr. Pawan Kumar

Associate Prof., Department of  Physics, A.S. (P.G.) College,Sikandrabad, U.P., India.

The temperature dependent resistance of pure and Ag doped Bi-Pb-Sr-Ca-Cu-O has been observed. It has been found that Ag additions to Bi-Pb-Sr-Ca-Cu-O depress Tc and Jc drestically and cause a large decrease in lattice parameters when samples are treated in air or pure oxygen. However, the lattice parameters Tc and Jc remain  unaffected by Ag additions when samples heated in 0.030-0.067 atm oxygen. It is clear that the Ag reacts with and destabilises the superconducting phase when the samples are treated in air or pure oxygen while, when the samples are heated in low oxygen partial pressures, the Ag remains as an isolated inert metal phase that improves the week links between the grains.

Keywords: Electrical Resistivity, ceramics, superconductivity.

Full Paper

 

 




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