Faculty Publications

Title

Processing and physical properties of single phase Tl2Ba2CaCu2O8 and (Tl0.5Pb0.5)Sr2-xBaxCa 2Cu3O9 superconductors

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.

Original Publication Date

2-1-1998

DOI of published version

10.1016/S0964-1807(97)00027-6

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