Effect of sintering atmosphere on the weak-link behaviour of YBCO superconductors

Pathak, L C and Mishra, Suman K and Das, Swapan K and Bhattacharya, D (2001) Effect of sintering atmosphere on the weak-link behaviour of YBCO superconductors. Physica C: Superconductivity, 351 (3). pp. 295-300.

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Weak-link behaviour of YBa2Cu3Ox (1 2 3) superconductors sintered in different atmospheres are studied by measuring the variation of critical current densities (Jc) near the superconducting transition temperatures (Tc). The weak links are found to change from superconductor–insulator–superconductor to superconductor–insulator–metal–superconductor and superconductor–metal–superconductor type of junctions as the sintering atmosphere is varied from argon to air and oxygen respectively. The scanning electron microscopy in conjunction with energy dispersive spectroscopy studies indicate that the composition fluctuation at the grain boundaries is the reason for such variation

Item Type:Article
Official URL/DOI:http://dx.doi.org/10.1016/S0921-4534(00)01628-2
Uncontrolled Keywords:YBCO; Superconductors; Sintering; Weak link; Composition analysis
Divisions:Material Science and Technology
ID Code:535
Deposited By:Sahu A K
Deposited On:18 May 2010 11:54
Last Modified:07 Feb 2012 14:56
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