Actas de congresos
Magnetic response and critical current properties of mesoscopic-size YBCO superconducting samples
Fecha
2010-01-01Registro en:
International Conference on Magnetism (icm 2009). Bristol: Iop Publishing Ltd, v. 200, p. 4, 2010.
1742-6588
10.1088/1742-6596/200/1/012105
WOS:000291321300105
WOS000291321300105.pdf
1353862414532005
0000-0002-7734-4069
Autor
Universidade Estadual Paulista (Unesp)
Institución
Resumen
In this contribution superconducting specimens of YBa(2)Cu(3)O(7-delta) were synthesized by a modified polymeric precursor method, yielding a ceramic powder with particles of mesoscopic-size. Samples of this powder were then pressed into pellets and sintered under different conditions. The critical current density was analyzed by isothermal AC-susceptibility measurements as a function of the excitation field, as well as with isothermal DC-magnetization runs at different values of the applied field. Relevant features of the magnetic response could be associated to the microstructure of the specimens and, in particular, to the superconducting intra- and intergranular critical current properties.