Archivio Istituzionale della RicercaThis paper investigates both transport properties and nature of superconductivity breakdown or, conversely, enhancement in oxide ceramics, due to radiation-induced defects. Low-fluence neutrons (≈107 n cm-2 at 3 MeV) can sensitively damage the samples, giving experimental evidence that the breakdown of coherent percolating paths produces decoupled domains. A set of preliminary measurements shows that high-fluence proton implantation can either damage or enhance critical current density in a currently non controllable way. In both cases strongly damaged or enhanced superconducting paths short-circuit the unaffected bulk network.
Defect network in superconducting ceramic oxides studied by neutron and proton irradiation / E., M., D., A., G., C., R., C., S., C., Gerbaldo, R., B., M.. - In: MATERIALS RESEARCH SOCIETY SYMPOSIA PROCEEDINGS. - ISSN 0272-9172. - 209 K:(1991), p. 753. (1990 MRS Fall Meeting. Symposium K – Defects in Materials ) [10.1557/PROC-209-753].
Defect network in superconducting ceramic oxides studied by neutron and proton irradiation
GERBALDO, Roberto;
1991
Abstract
This paper investigates both transport properties and nature of superconductivity breakdown or, conversely, enhancement in oxide ceramics, due to radiation-induced defects. Low-fluence neutrons (≈107 n cm-2 at 3 MeV) can sensitively damage the samples, giving experimental evidence that the breakdown of coherent percolating paths produces decoupled domains. A set of preliminary measurements shows that high-fluence proton implantation can either damage or enhance critical current density in a currently non controllable way. In both cases strongly damaged or enhanced superconducting paths short-circuit the unaffected bulk network.
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https://hdl.handle.net/11583/1661851
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