A kind of method of making rare earth barium copper oxide superconducting film

Abstract

The invention discloses a method for manufacturing a REBCO superconducting film and a constant-temperature dip-coating device. The method comprises the following steps: (A) preparing a precursor solution containing rare earth element ions, barium ions, copper ions and a solvent; (b) controlling a coating temperature by a constant temperature way with the temperature not higher than 20 DEG C, controlling a substrate and the precursor solution to be at same set temperatures, and coating the precursor solution on the substrate to obtain a precursor film; and (c), placing the precursor film in a heat treatment furnace and carrying out thermal decomposition, sintering and oxygenation steps to obtain an REBCO superconducting film. According to the invention, the coating temperature is controlled to be at a specific constant value, so that the thickness of the film increases.

Description

technical field

[0001] The invention relates to a method and constant temperature dip coating equipment for making a rare earth barium copper oxide superconducting film. Background technique

[0002] Rare earth barium copper oxide (REBa 1+x Cu 3 o 7-y , where RE is a rare earth element such as Y, Gd, Sm, etc., 0.5≤x≤1, 0<y<0.5) The high-temperature superconducting film is the core component of the second-generation high-temperature superconducting wire (also known as a coated conductor) part, it has a very high self-field critical current density (generally higher than 1MA / cm 2 ), and is suitable for applications in high magnetic field environments. The current technology for preparing high-temperature superconducting films mainly includes chemical solution deposition and some vacuum deposition methods. The chemical solution deposition technology is very beneficial to reduce production costs because it does not require expensive vacuum equipment, and the high-tempe...

Images