High temperature superconductors Oxide superconductors 14 AC susceptibility 12 Yttrium barium copper oxides 11 Magnetic field effects 10 Magnetic fields 10 Copper oxides 9 Mathematical models 9 Crystal lattices 8 Lanthanum compounds 8 Magnetic flux 8 Magnetic hysteresis 8 Thermal effects 8 Single crystals 7 Creep 6 Critical current density (superconductivity) 6 Electric fields 6 Granular materials 6 Magnetic susceptibility 5 Superconducting films 5 Vortex flow 5 Computer simulation 4 Critical state 4 Critical voltages 4 Current voltage characteristics 4 Diffusion of oxygens 4 Electric field stress 4 Hysteresis 4 Interface states 4 Lanthanum strontium copper oxides 4