李英楠,宁梓旭,米兆垠,吴金秋,齐晓童.一步热处理制备氧化硼掺杂的YBCO超导膜[J].稀有金属材料与工程,2020,49(5):1521~1525.[Li Yingnan,Ning Zixu,Mi Zhaoyin,Wu Jinqiu,Qi Xiaotong.Preparation of Boron Oxide Doped YBCO Superconducting Films by One-step Heat Treatment[J].Rare Metal Materials and Engineering,2020,49(5):1521~1525.]
一步热处理制备氧化硼掺杂的YBCO超导膜
投稿时间:2018-12-13  修订日期:2019-01-28
中文关键词:  YBCO 硼酸 氧化硼
基金项目:国家级大学生创新创业训练计划 (201810145086 )
中文摘要:
      为了提高化学法制备长带YBCO的效率,传统的前驱膜多次热解过程需要被缩减为一次,热解后不经过降温直接连接YBCO的晶化过程。采用异辛酸铜替代三氟乙酸铜,可以缓解热解过程的集中放热,缓解前驱膜的收缩。适量硼酸被添加进1.0mol/L的前驱液,经过一次连续热处理,YBCO超导膜被制备出来。利用硼酸在200至500℃的流动态这一特性,氧化硼填充进YBCO气孔,所得YBCO膜更加致密、光亮,与同样条件无掺杂前驱液制备的YBCO对比,具有更高的超导电性。
Preparation of Boron Oxide Doped YBCO Superconducting Films by One-step Heat Treatment
英文关键词:YBCO  boric acid  boron oxide
英文摘要:
      In order to improve the efficiency of chemical preparation of YBa2Cu3O7?δ (YBCO) with long taps, the pyrolysis of traditional process preparing precursor film needs to be reduced to one step, so the crystallization process should be directly connected to the former without the cooling of pyrolysis. Replacing copper trifluoroacetate with copper isooctanate can alleviate the centralized heat release and the contraction of the precursor film during pyrolysis. A suitable amount of boric acid was added into the precursor solution with total cation concentration of 1.0 mol/L, after a continuous heat treatment YBCO superconducting film was obtained. Utilizing the flow state of boric acid at 200-500 ℃, boron oxide was doped into YBCO film which shows denser and smoother by filling some pores, compared with that one prepared by undoped precursor solution under the same conditions, the former shows higher superconductivity.
作者单位E-mail
李英楠 东北大学冶金学院资源与环境工程研究所 liyn@smm.neu.edu.cn 
宁梓旭 东北大学冶金学院  
米兆垠 东北大学冶金学院  
吴金秋 东北大学冶金学院  
齐晓童 东北大学冶金学院  
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