High current property of oxide superconducting films by purification of starting solution and controlling of crystal alignment

通过起始溶液的纯化和晶体取向的控制来实现氧化物超导薄膜的高电流性能

• 批准号: 24760013
• 负责人: RYO Teranishi
• 金额: $ 2.91万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24760013/
• 关键词: 溶液プロセス; 高純度化; 酸化物超伝導薄膜; 臨界電流密度; イットリウム系超伝導体; 薄膜材料; 酸化物超伝導体; 超伝導材料; 銅酸化物; 薄膜; 溶液塗布法

YBa2Cu3Oy superconducting films were grown fabricated by a chemical solution deposition process. The solution deposition is a promising process for coated conductor fabrication due to its cost efficiency. In this process, impurities such as water in starting solution has been one of the big problems because when YBCO film was fabricated by a solution containing high water concentration, the crystal orientation of the film become worse. In this study, water in starting solution was purified by controlling two factors, degree of vacuum and holding period in vacuum. Two-step vacuuming process enabled us to decrease the water concentration effectively. The water concentration of the solution with purification was one third of the solution without the purification. And, we obtained highly oriented YBCO films by using the purified solution. Consequently, current property enhanced to be 4 times in comparison to the film prepared by the solution without purification.

采用化学溶液沉积法制备了YBa_2Cu_3O_y超导薄膜。溶液沉积由于其成本效率而成为用于涂覆导体制造的有前途的工艺。在这一过程中，起始溶液中的杂质如水一直是一个大的问题，因为当用含有高浓度水的溶液制备YBCO薄膜时，薄膜的晶体取向变差。本研究通过控制真空度和真空保持时间两个因素来净化起始溶液中的水。两步抽真空工艺使我们能够有效地降低水分浓度。经纯化的溶液的水浓度是未经纯化的溶液的三分之一。并且，我们通过使用纯化的溶液获得了高度取向的YBCO薄膜。因此，电流特性与未经纯化的溶液制备的膜相比提高了4倍。

项目成果

TFA-MOD法によるBaZrO3を導入したYBa2Cu3Oy膜の結晶成長過程

TFA-MOD法引入BaZrO3 YBa2Cu3Oy薄膜晶体生长过程

• 发表时间: 2013
• 作者: 寺西亮;紺屋和樹;山田和広;金子賢治;木須隆暢;吉積正晃;和泉輝郎
• 通讯作者: 和泉輝郎

YBa2Cu3Oy超伝導薄膜の組織及び特性に及ぼす原料溶液高純度化の効果

高纯原料溶液对YBa2Cu3Oy超导薄膜结构与性能的影响

• 发表时间: 2013
• 作者: 寺西亮;美谷章生;山田和広;金子賢治
• 通讯作者: 金子賢治

溶液塗布熱分解法によるYBa2Cu3Oy 薄膜へのBaHfO3 ナノ粒子 ピン止め点の導入

溶液涂覆热解法在 YBa2Cu3Oy 薄膜中引入 BaHfO3 纳米粒子钉扎点

• DOI: 10.2221/jcsj.49.145
• 发表时间: 2014
• 期刊: Journal of Cryogenics and Superconductivity Society of Japan
• 作者: 賢也 大田黒;和樹 紺屋;武志 西山;亮 寺西;賢治 金子;和広 山田;正晃 吉積;輝郎 和泉
• 通讯作者: 輝郎 和泉

Enhancement of current density in fields for YBa2Cu3Oy superconducting films by introducing nano-sized flux pinning centers

通过引入纳米通量钉扎中心提高 YBa2Cu3Oy 超导薄膜场中的电流密度

• 发表时间: 2013
• 作者: R.Teranishi;K.Konya;T.Nishiyama;K.Yamada;K.Kaneko;M.Yoshizumi;T.Izumi
• 通讯作者: T.Izumi

Effect of holding temperature on microstructures and Jc properties of YBa2Cu3O7-X films fabricated by TFA-MOD method

• DOI: 10.1016/j.physc.2013.04.067
• 发表时间: 2013-11-01
• 期刊: PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
• 影响因子: 1.7
• 作者: Konya, K.;Ootaguro, K.;Izumi, T.
• 通讯作者: Izumi, T.