Title :
AC losses in high-temperature superconductors
Author_Institution :
Div. of Appl. Phys., CSIRO, Sydney, NSW, Australia
fDate :
3/1/1991 12:00:00 AM
Abstract :
Intergranular and intragranular AC losses in the superconducting state of ceramic high-temperature superconductors are calculated using a critical state model for the intergranular loss contribution that is similar to that of Y.B. Kim et al. (1963) and the model of C.P. Bean (1962) for the intragranular loss. Good agreement with experimental data over a magnetic field range of 10-4 T to 10 T is achieved. The effects of sample size, average grain size, and temperature are investigated. In addition, the influence of a DC field on the intergranular AC loss is discussed
Keywords :
ceramics; grain size; high-temperature superconductors; losses; 10-4 to 10 T; AC losses; DC field; average grain size; critical state model; high-temperature superconductors; intergranular loss; intragranular loss; magnetic field range; sample size; temperature; Ceramics; Creep; Equations; Grain boundaries; Granular superconductors; High temperature superconductors; Magnetic fields; Magnetic flux; Magnetic materials; Superconducting materials;
Journal_Title :
Magnetics, IEEE Transactions on
