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首页> 外文期刊>Journal of Sol-Gel Science and Technology >Synthesis of highly textured superconducting NdBa2Cu3O_(7-y) thin films by two aqueous sol-gel dip coating techniques
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Synthesis of highly textured superconducting NdBa2Cu3O_(7-y) thin films by two aqueous sol-gel dip coating techniques

机译:两种水性溶胶-凝胶浸涂技术合成高织构的超导NdBa2Cu3O_(7-y)薄膜

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摘要

Today, the deposition of coated conductors on a variety of substrates is often performed using a vacuum or low pressure technique. However, obtaining uninterrupted deposition at high speed, increasing flexibility in composition and attaining independence of geometric constraints of the substrates are areas in which vacuum techniques will need sustained development in order to answer industrial demands. The development of the next generation of deposition methods, based on deposition under atmospheric environment and from aqueous precursor solutions is a real challenge. This work describes the deposition of thin NdBa2Cu3_(7-y) layers on SrTiO3 single crystals based on a new sol-gel dip coating process using aqueous precursor solutions. Two inorganic aqueous sol-gel routes were investigated, a metal nitrate-citric acid based and a metal acetate-triethanol amine based solution. Using detailed thermal analysis, it is shown that adjusting the different parameters during thermal treatment can be used to control the morphology of the films. Also special attention is given to the microstructure of the thin film because of its relevance to the superconducting transport properties of the coated conductor system.
机译:如今,通常使用真空或低压技术在各种基材上进行涂层导体的沉积。然而,高速获得不间断的沉积,增加组成的灵活性以及获得基板的几何约束的独立性是需要持续发展真空技术以满足工业需求的领域。基于大气环境下的沉积和前体水溶液的沉积,下一代沉积方法的发展是一个真正的挑战。这项工作描述了基于SdTiO3单晶的NdBa2Cu3_(7-y)薄层在基于前体水溶液的新型溶胶-凝胶浸涂工艺的基础上的沉积。研究了两种无机水性溶胶-凝胶路线,一种是基于金属硝酸盐-柠檬酸的溶液,另一种是基于金属乙酸盐-三乙醇胺的溶液。使用详细的热分析表明,在热处理过程中调节不同的参数可用于控制薄膜的形貌。由于薄膜的微结构与涂层导体系统的超导传输特性有关,因此还应特别注意薄膜的微结构。

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