Abstract
A unique structure, a network of nanotwins, is revealed for the first time in high-energy ion-irradiated YBa2Cu3O7-δThis structure is shown to form only at ion doses of 1011cm-2or greater and thus is not revealed in any earlier electron microscopy studies. In this higher-dose regime, the well known columnar defects are connected by the nanotwin structure, thus affecting bulk superconducting properties. Consequences for a number of published interpretations of such measurements related to pinning and dynamics of magnetic vortices are discussed.
Original language | English |
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Pages (from-to) | 841-848 |
Number of pages | 8 |
Journal | Philosophical Magazine Letters |
Volume | 79 |
Issue number | 10 |
DOIs | |
State | Published - Oct 1 1999 |
Externally published | Yes |