Zr doping CeO2 buffer layer thin film and method for producing the same

Abstract

The invention relates to a transmission layer film of Zr doped with CeO2 and a preparation method thereof, belonging to a preparation technical field of superconducting material of high-temperature coating. The film of Ce<1-x>ZrxO2 (x is no less than 0.1 and no more than 0.5) provided by the invention is obtained by the following method: firstly, organic Ce salt and organic Zr salt are dissolved in solution of positive propionic acid and methanol or acetylacetone by molar ratio of cations of 1-x: x, wherein, x is no less than 0.1 while no more than 0.5, so as to obtain precursor solution; then the precursor solution is deposited in a baseband of NiW alloy or a substrate of single crystal by adopting the method of sputtering or dip coating; under the condition of communication of protective gas, sintering is carried out for 15 to 120 minutes at temperature of 950 to 1,200 DEG C, thus obtaining the film of Ce<1-x>ZrxO2. The thickness of the film can reach 30 to 250nm; the film surface is compact and flat without microscopic cracks or holes; in addition, the transmission layer film has high texture, simple preparation process and low cost.

Description

A kind of Zr-doped CeO2 transition layer film and preparation method thereof technical field The invention belongs to the technical field of high-temperature superconducting material preparation, and in particular relates to the preparation technology of a high-temperature superconducting coating conductor transition layer. Background technique Making high-temperature superconducting materials with ceramic brittleness into wires and strips is an important link to realize their practical applications. In recent years, people have made great progress in the preparation of high-temperature superconducting long strips by depositing superconducting films on polycrystalline ductile metal substrates. Yttrium barium with a length of hundreds of meters and high critical current has been prepared. Copper oxide (YBa2Cu3O7-δ, abbreviated as YBCO) superconducting tape is expected to be used in strong electric applications. The component YBCO of the high-temperature superconducting la...

AI Technical Summary

Problems solved by technology

Such a multi-layer transition layer structure, regardless of the selection and matching of materials, or the preparation process of the transition layer film, has brought great complexity to the acquisition of the superconducting transition layer of multi-layer coatings, and has also improved the coating process. Fabrication cost of layer superconductor

Images