Compression for data archiving and backup revisited
Corneliu Constantinescu
SPIE Optical Engineering + Applications 2009
Bulk polycrystalline Tl2Ba2CaCu2Ox materials were irradiated with 0.8 GeV protons to introduce randomly oriented columnar defects. Proton fluences up to 8.7 × 1020 m-2 were used to create defect arrays corresponding to a 'matching field' of 1.5 T. Studies were conducted on the superconductive transition temperature, the Meissner fraction, the intragrain persistent current density against the magnetic field and temperature, and the equilibrium magnetization. The magnetization was modelled using London theory with the addition of vortex-defect interactions, yielding physically reasonable parameters.
Corneliu Constantinescu
SPIE Optical Engineering + Applications 2009
S. Cohen, T.O. Sedgwick, et al.
MRS Proceedings 1983
Hiroshi Ito, Reinhold Schwalm
JES
Ming L. Yu
Physical Review B