A. Reisman, M. Berkenblit, et al.
JES
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.
A. Reisman, M. Berkenblit, et al.
JES
Julian J. Hsieh
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Frank R. Libsch, Takatoshi Tsujimura
Active Matrix Liquid Crystal Displays Technology and Applications 1997
J.V. Harzer, B. Hillebrands, et al.
Journal of Magnetism and Magnetic Materials