Bi-2212 thin films have been irradiated by 936 MeV Pb ions. An High Resolution Electron Microscopy (HREM) study revealed the formation of square based defects, the so-called pillar tracks, extending throughout the thickness of the film and coexisting with columnar defects of same size. The pinning efficiency of this mixed structure of defects has been investigated by magnetic measurements and compared to a structure containing only columnar defects of the same size. This comparison suggests that pillar defects act the same way as columnar defects of about the same size (125 Angstrom).
Hebert, S., Hervieu, M., Hardy, V., Aouaroun, T., Simon, C., Provost, J., et al. (1998). Pillar defects, a new type of track in Pb-irradiated Bi-2212 thin films: Nanostructural study and influence on the irreversibility line. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 142(3), 319-328.
Pillar defects, a new type of track in Pb-irradiated Bi-2212 thin films: Nanostructural study and influence on the irreversibility line
MILANI, ENRICO;BALESTRINO, GIUSEPPE
1998-01-01
Abstract
Bi-2212 thin films have been irradiated by 936 MeV Pb ions. An High Resolution Electron Microscopy (HREM) study revealed the formation of square based defects, the so-called pillar tracks, extending throughout the thickness of the film and coexisting with columnar defects of same size. The pinning efficiency of this mixed structure of defects has been investigated by magnetic measurements and compared to a structure containing only columnar defects of the same size. This comparison suggests that pillar defects act the same way as columnar defects of about the same size (125 Angstrom).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
