Global and local critical current density in superconducting SmFeAsO${}_{1-x}$F${}_x$ measured by two methods

E. S. Otabe, M. Kiuchi, S. Kawai +8

The critical current densities of polycrystalline bulk SmFeAsO${}_{1-x}$F${}_x$ prepared by the powder-in-tube (PIT) method and by a conventional solid-state reaction were investigated…