P. Alnot, D.J. Auerbach, et al.
Surface Science
To enhance vortex pinning in the high-Tc superconductor Bi2Sr2CaCu2O8, single crystals were irradiated with energetic heavy ions to create columnar defects. Irradiations were made at various angles from the c-axis. The pinning energy U0 was investigated by ac magnetometry near B(Tirr), the limit of quasistatic magnetic irreversibility. Irradiation increased U0 by a factor of ∼3, relatively independent of the ion-beam exposure, which increased both Jc and the irreversible BT regime. Independence of Jc and U0 from the magnetic-field orientation suggests the predominance of strong pins interacting with 2-D pancake vortices. © 1994.
P. Alnot, D.J. Auerbach, et al.
Surface Science
John G. Long, Peter C. Searson, et al.
JES
S.F. Fan, W.B. Yun, et al.
Proceedings of SPIE 1989
A. Gangulee, F.M. D'Heurle
Thin Solid Films