Processing And Physical Properties Of Single Phase Tl2Ba2Cacu2O8 And (Tl0.5Pb0.5)Sr2-Xbaxca 2Cu3O9 Superconductors

Authors

G. Subramanyam, University of Northern Iowa
Z. Ju, University of Northern IowaFollow
M. Fahmy, University of Northern IowaFollow
P. M. Shand, University of Northern IowaFollow
M. Zhang, University of Cincinnati
P. Boolchand, University of Cincinnati

Document Type

Article

Journal/Book/Conference Title

Applied Superconductivity

Volume

4

Issue

12

First Page

591

Last Page

598

Abstract

Single phase Tl2Ba2CaCu2O8 (2212) superconductors with Tc of 97 K were obtained by a two-step synthesis. Prolonged annealing at 860°C in the second step of the synthesis resulted in a higher Tc, at the expense of the growth of an impurity trilayer 2223 phase in the form of stacking faults in the 2212 phase. Nearly single phase (Tl0.5Pb0.5)Sr2-xBaxCa 2Cu3O9) (1223) samples were obtained in a single air-sintering step. Replacement of Sr by Ba is necessary to grow the 1223 phase. Samples with x = 0.75 displayed Tc as high as 117 K with a superconducting volume fraction over 50%. © 1997 Elsevier Science Ltd. All rights reserved.

Department

Department of Industrial Technology

Original Publication Date

2-1-1998

DOI of published version

10.1016/S0964-1807(97)00027-6

Recommended Citation

Subramanyam, G.; Ju, Z.; Fahmy, M.; Shand, P. M.; Zhang, M.; and Boolchand, P., "Processing And Physical Properties Of Single Phase Tl2Ba2Cacu2O8 And (Tl0.5Pb0.5)Sr2-Xbaxca 2Cu3O9 Superconductors" (1998). Faculty Publications. 3879.
https://scholarworks.uni.edu/facpub/3879