Title :
Descriptive model for the critical current as a function of axial strain in Bi-2212/Ag wires
Author :
Ten Haken, Bennie ; Godeke, Arno ; Schuver, Henk-Jan ; Ten Kate, Herman H J
Author_Institution :
Low Temp. Div., Twente Univ., Enschede, Netherlands
fDate :
7/1/1996 12:00:00 AM
Abstract :
A descriptive model is presented for the critical current of a Bi-2212 conductor that is axially deformed. This model is based on previously published critical current measurements on axially compressed and elongated Bi-2212 wires. The validity of the model is investigated by applying an additional pre-strain at room temperature. The experimental results on the pre-strained wires are in reasonable agreement with the prediction. The description for the critical-current reduction in Bi-2212 is applied in a model for a bend conductor. This model predicts the critical current as a function of the bending radius in a wire and a tape conductor
Keywords :
bending; bismuth compounds; calcium compounds; composite superconductors; critical currents; high-temperature superconductors; silver; strontium compounds; superconducting tapes; 300 K; Bi-2212/Ag wires; Bi2Sr2CaCu2O-Ag; axial strain; bend conductor; critical current; tape conductor; Capacitive sensors; Conductors; Critical current; Current measurement; Deformable models; Grain boundaries; Strain measurement; Temperature; Tensile strain; Wires;
Journal_Title :
Magnetics, IEEE Transactions on
