{110}⟨110⟩ textured Ag ribbons for biaxially aligned YBa₂Cu₃O_7-<i>x</i>coated conductor tapes

Abstract

Texture development in pure Ag was investigated in order to achieve pure {110}⟨011⟩ textured Ag ribbons that can be used as a substrate for YBa2Cu3O7-x superconducting coated tapes without a buffer layer. Silver ingots were rolled by different percentages and to different thicknesses. They were then annealed at different temperatures to get a stable recrystallization texture. The textures were measured using x-ray pole figures and orientation distribution function (ODF) analysis. The rolled texture is found to be {110}⟨112⟩, with a {110}⟨011⟩ component for high deformation rates. As the recrystallization temperature is increased from 100 to 800 °C, the broad {110}⟨112⟩ as-rolled texture is reduced and the {110}⟨110⟩ texture is enhanced. A small amount of a secondary texture originating from twinning is evident in fully recrystallized samples. No change in the {110}⟨110⟩ recrystallization texture was observed after several weeks at room temperature and after 1 h at 900 °C, which is promising for coated conductor processing.