Manufacture of GdBa2Cu3O7-x Superconducting Thin Films Using High-Thermal-Stability Precursors Playing the Role of Intermediate-Phase Grain-Growth Inhibitors

作者：Tang X^*; He D; Zhao Y; Grivel J C

来源：IEEE Transactions on Applied Superconductivity, 2014, 24(1): 7500104.

DOI：10.1109/TASC.2013.2286493

• Acrylic acid
• GdBCO
• grain-growth inhibitor
• polymerization
• thin films

We have developed a fluorine-free metal-organic decomposition method using acrylic acid as the solvent for the synthesis of GdBCO superconducting thin films. Commonly used propionic acid was also used to make a comparison with acrylic acid. Acrylic acid was found to be polymerized during drying, resulting in high thermal stability of the precursor solution. Due to the elevated decomposition temperature of the organic compounds in the acrylic-acid-based precursor, the formation of intermediate phases such as CuO was found delayed; therefore, the grain growth and phase segregation were suppressed.

• 出版日期2014-2