G.J. Clark, A.D. Marwick, et al.
Nuclear Instruments and Methods In Physics Research
We report an investigation of possible oxygen loss from an ion-bombarded YBa2Cu3O7-x superconductor. The chain oxygen sites in thin-film samples were filled with 18O, and the 18O content of the films measured as a function of irradiating ion dose using the 18O(p,α) 15N nuclear reaction. Absolute measurement of the 18O concentration was achieved by the use of a Si 18O2 standard. No significant change in the 18O concentration was detected after irradiation with 2×1014 2 MeV As ions/cm2, which is a dose sufficient to raise the resistivity of the samples by a factor of 10 4. We conclude that ion irradiation does not cause oxygen to outgas from the chain sites. This implies that ion bombardment effects in YBa 2Cu3O7-x are due to radiation-induced defects.
G.J. Clark, A.D. Marwick, et al.
Nuclear Instruments and Methods In Physics Research
J.F. Ziegler, T.H. Zabel, et al.
Physical Review Letters
J.R. Thompson, Yang Ren Sun, et al.
Physica A: Statistical Mechanics and its Applications
A.D. Marwick, G.S. Oehrlein, et al.
Applied Physics Letters