This paper reports the nanoscale texture and microstructure of a high-performance NdFeAs(O,F) superconducting thin film grown by molecular beam epitaxy on textured MgO/Y$_2$O$_3$/Hastelloy substrate. The forms highly columnar grain structure epitaxial growth MgO template. Although contains stacking faults along $ab$-plane as well boundaries perpendicular to $ab$-plane, good properties are measu...
