Transmission electron microscopy of defect cascades in YBa2Cu3O7−δproduced by ion irradiation
- 1 June 1993
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine A
- Vol. 67 (6) , 1347-1363
- https://doi.org/10.1080/01418619308225359
Abstract
YBa2Cu3O7-δ single crystals were irradiated with 50 and 85 keV Kr+ and Xe+ ions to low doses, producing spatially isolated defect cascades. One irradiation was performed at low temperature. The resulting defects were investigated by conventional and high-resolution transmission electron microscopy. They were found to have primarily an amorphous-like structure with an inwardly directed (vacancy) strain field. Evidence for lattice melting, with coherent or incoherent recrystallization at some defect cascade sites, is presented for the first time.Keywords
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