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Oxygen desorption from YBa2Cu3O(7-x) and Bi2CaSr2Cu2O(8 + delta) superconductorsOxygen desorption experiments from YBa2Cu3O(7-x) (YBCO) and Bi2CaSr2Cu2O(8 + delta) (BSCCO) superconductors were carried out using a quadrupole mass spectrometer for monitoring the desorbing species and X-ray photoemission spectroscopy for surface characterization. Molecular oxygen was found to desorb from both superconductors following photoirradiation with ultraviolet/optical radiation and subsequent heating at over 150 C. Both YBCO and BSCCO were found to have similar oxygen desorption rates and similar activation energies. The desorption data as well as the X-ray photoemission data indicate that the oxygen desorption is not intrinsic to the superconductors but rather due to molecular oxygen entrapped in the material.
Document ID
19910065218
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Mesarwi, A. (Houston Univ. TX, United States)
Levenson, L. L. (Houston Univ. TX, United States)
Ignatiev, A. (Houston, University TX, United States)
Date Acquired
August 14, 2013
Publication Date
August 1, 1991
Publication Information
Publication: Journal of Applied Physics
Volume: 70
ISSN: 0021-8979
Subject Category
SOLID-STATE PHYSICS
Distribution Limits
Public
Copyright
Other