Pulsed laser deposition of a single buffer layer of LaMnO3 for YBa2Cu3O7-x coated conductors

A single buffer layer of LaMnO3 for YBa2Cu3O7-x ( YBCO) coated conductors has been grown on textured Ni substrate using pulsed laser deposition (PLD). Detailed X-ray diffraction ( XRD) studies showed that the LaMnO3 single buffer layer had a good out-of- plane and in-plane texture with a full width at half maximum of 5.2 degrees. and 9.9 degrees, respectively. The scanning electron microscopy image revealed a dense, smooth, and uniform surface. The single LaMnO3 buffer layer has been proved to be a very effective diffusion barrier layer against Ni and oxygen diffusion and a good template for subsequent growing high critical current density YBa2Cu3O7-x films.