Electron microscopy and microanalysis of a YBa2Cu3Ox superconducting oxide
Dou, S. X. ; Bourdillon, A. J. ; Sorrell, C. C. ; Ringer, S. P. ; Easterling, K. E. ; Savvides, N. ; Dunlop, J. B. ; Roberts, R. B.
Woodbury, NY : American Institute of Physics (AIP)
Published 1987
Woodbury, NY : American Institute of Physics (AIP)
Published 1987
| ISSN: |
1077-3118
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
The onset of superconductivity at 140 K has been observed in the high Tc Y-Ba-Cu-O system in samples consisting of 90% by volume of a single-phase oxide of average cation ratio Y:Ba:Cu(approximately-equal-to)1:2:3. A sharp superconducting transition in the resistivity has been measured, where Tc0=140 K, Tc=93.2 K, ΔTc=0.5 K, and "zero resistance'' was observed at 92.0 K. Transmission electron microscopy and energy dispersive spectroscopy measurements revealed that the superconducting phase consisted of a large number of microcrystallites of (approximately-equal-to)0.5 μm size and that these contained a very high defect microtwinned/faulted structure.
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| Type of Medium: |
Electronic Resource
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| URL: |