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2014 | 126 | 1 | 364-365
Article title

Changes in YBCO Single Grain Bulk Superconductor Exposed to Air Moisture

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Abstracts
EN
Changes in bulk single grain YBCO superconductor at exposition to air were studied. The increase of the sample weight caused by reaction with air moisture was observed by weighing the samples over two months period. Thermal analyses and mass spectrometry of the exposed samples has shown evolution of water and oxygen during sample heating. Observation with scanning electron microscope confirmed the formation of some nanosize phases at the inner sample surfaces. XPS spectra done on the freshly cleaved and on the air exposed (001) surfaces confirmed changes in Ba and Cu bonds. Observed structural changes did not caused systematic changes in measured trapped field.
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Contributors
author
  • Institute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia
author
  • Institute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia
  • Faculty of Mining, Ecology, Process Control and Geotechnology, Technical University of Košice, Park Komenskeho 17, 042 00 Košice, Slovakia
  • Institute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia
author
  • Institute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia
References
  • [1] P. Diko, Supercond. Sci. Technol. 17, R45 (2004), doi: 10.1088/0953-2048/17/11/R01
  • [2] M.M. Garland, J. Mat. Res. 3, 830 (1988), doi: 10.1557/JMR.1988.0830
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Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv126n1176kz
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