Phase decomposition and structural defects in a Y-Ba-Cu-O superconductor
Publication Type | Journal Article
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Authors | |
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DOI |
10.1063/1.104126
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Abstract |
Phase decomposition of a bulk Y2Ba4Cu 8O16 superconductor has been studied. The microstructure of the sample is heavily faulted and contains many stacking defects, including a new "125" structure. It is likely that these fine-scale (10-30 Å thick) stacking defects are responsible for the significantly improved flux pinning in the phase-decomposed sample. It is proposed that the decomposition process begins with the reaction "248" 0><fv/0 "123"+"125", which could possibly occur by a spontaneous, short-range diffusion reaction. Further decomposition involves gradual removal of the extra CuO chains by long-range diffusion to produce a mixture of "123"+CuO.
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Notes |
cited By 46
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Journal |
Applied Physics Letters
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Volume |
57
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Year of Publication |
1990
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Number |
14
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Pagination |
1458-1460
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ISSN Number |
00036951
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Research Areas | |
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