Oxygen desorption from high Tc YBa2Cu3O7-δ (δ= 0.05, 0.5)

Hegde, M. S. (1988) Oxygen desorption from high Tc YBa2Cu3O7-δ (δ= 0.05, 0.5) Materials Research Bulletin, 23 (8). pp. 1171-1176. ISSN 0025-5408

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/002554...

Related URL: http://dx.doi.org/10.1016/0025-5408(88)90208-5


From a temperature programmed desorption study employing a quadrupole mass spectrometer, the superconducting oxide YBa2Cu3O7-δ (δ = 0.05) showed two distinct oxygen desorption peaks, one below and one above 470°C. The activation energy of oxygen desorption of the superconducting oxide was 28 Kcals/mole and that of non-superconducting oxide (YBa2Cu3O6.5) was 54 Kcals/mole. No impurity peaks due to H2O, CO and CO2 from the bulk or adsorbed on surfaces could be observed when a well prepared superconducting oxide was heated up to 650°C.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Superconductors; Oxides; Copper; Barium; Yttrium
ID Code:15807
Deposited On:13 Nov 2010 12:30
Last Modified:03 Jun 2011 09:10

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