Changes in YBCO Single Grain Bulk Superconductor Exposed to Air Moisture

• Authors: S. Piovarči , V. Antal , M. Kaňuchová , M. Radušovská , P. Diko
• Languages of publication: EN

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.

Keywords

EN

74.72.-h; 74.25.-q; 68.43.-h; 68.37.-d

Discipline

• 68.43.-h: Chemisorption/physisorption: adsorbates on surfaces
• 74.72.-h: Cuprate superconductors
• 68.37.-d: Microscopy of surfaces, interfaces, and thin films
• 74.25.-q: Properties of superconductors

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 1
• Pages: 364-365

Dates

published

2014-07

Contributors

author

S. Piovarči

• Institute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia

author

V. Antal

• Institute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia

author

M. Kaňuchová

• Faculty of Mining, Ecology, Process Control and Geotechnology, Technical University of Košice, Park Komenskeho 17, 042 00 Košice, Slovakia

author

M. Radušovská

• Institute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia

author

P. Diko

• 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

Identifiers

DOI

10.12693/APhysPolA.126.364