Title :
Frequency dependence of HTS AC harmonic susceptibility in the Kim-Anderson and collective pinning vortex glass models
Author :
Gioacchino, Daniele Di ; Tripodi, Paolo ; Celani, Francesco ; Testa, Alberto Maria ; Pace, Sandro
Author_Institution :
Nat. Inst. Nucl. Phys., Frascati, Italy
fDate :
3/1/2001 12:00:00 AM
Abstract :
By numerically solving the nonlinear magnetic flux diffusion equation, the temperature dependence of the AC magnetic susceptibility have been computed at different frequencies in the framework of the collective pinning vortex glass and of the Kim-Anderson models. In particular the frequency dependence of the amplitude of the third harmonic have been analyzed. Such dependence is determined by the dynamic curvature of the E-J characteristics, normalized to the dynamic resistivity
Keywords :
flux pinning; high-temperature superconductors; magnetic flux; magnetic susceptibility; AC magnetic susceptibility; E-J characteristics; HTS AC harmonic susceptibility; Kim-Anderson model; collective pinning vortex glass models; dynamic curvature; dynamic resistivity; frequency dependence; nonlinear magnetic flux diffusion equation; temperature dependence; third harmonic; Differential equations; Frequency dependence; Glass; Harmonic analysis; High temperature superconductors; Magnetic susceptibility; Nonlinear equations; Nonlinear magnetics; Temperature dependence; Type II superconductors;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
