Coated conductor and polycrystalline films useful for the production of high temperatures superconductor layers

US7807608B2 · kind B2 · utility

Assignee

• NEXANS · FR

Inventors

• Andre Wolf · Cologne, DE
• Dirk Isfort · Heidenheim, DE
• Mark Rikel · Gerstungen, DE

Key dates

• Filing date: May 1, 2007
• Grant date: Oct 5, 2010
• Expiry date: May 12, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B2235/79
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

Coated conductors have a substrate, a high temperature superconductor layer and at least one or more buffer layers, wherein at least one of the buffer layers is a template for biaxially orienting the high temperature superconductor layer wherein the template is composed of a polycrystalline film consisting of a non-stoichiometric material having the nominal chemical formula A2−xB2+xO7 with B being at least one selected from Zr, Hf, Sn, Pb and Ti; A being at least one selected from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Y, Tm, Yb and Lu; and x≠0; and wherein the substrate is textured.