Enhancement of critical current density using assit pinning centers in high-Tc superconducting thin films with 1D pinning centers

在具有一维钉扎中心的高温超导薄膜中使用辅助钉扎中心增强临界电流密度

• 批准号: 23760288
• 负责人: SUEYOSHI Tetsuro
• 金额: $ 2.25万
• 依托单位: Kumamoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23760288/
• 关键词: 高温超伝導体; 臨界電流密度; ハイブリッド磁束ピンニング; 重イオン照射; 擬似多層膜; 1次元ピン; 3次元ピン; 高臨界電流密度; スプレイ効果; 異方性改善; 超伝導材料・素子; ナノ構造制御; 低消費電力・高エネルギー密度

BaZrO3/YBa2Cu3Oy quasi-multilayered films, in which the size and the spatial dirstribution of BaZrO3 nano-particles were controlled, were irradiated using 200 MeV Xe ions along the c-axis direction. When the BaZrO3 nano-particles were larger in size, the flux lines not captured by CDs, such as interstitial flux lines between CDs and double kinks of flux lines, can be pinned more effectively by the BaZrO3 nano-particles, so that the Jc enhances for high magnetic fields and high temperature. In addition, the inverse correlation between Jc and n-value appears at high temperature in increasing magnetic field for the film with correlated rows of the nano-particles which might be curved off the c-axis. These suggest that the hybrid flux pinning depends not only on the combination of one-dimensional (1D) and three-dimensional pinning centers (3D-PCs) but also on the size and the spatial distribution of the 3D-PCs.

BaZrO3/YBa2Cu3Oy 准多层膜中 BaZrO3 纳米颗粒的尺寸和空间分布受到控制，使用 200 MeV Xe 离子沿 c 轴方向进行辐照。当BaZrO3纳米颗粒尺寸较大时，未被CD捕获的磁通线，例如CD之间的间隙磁通线和磁通线的双扭结，可以被BaZrO3纳米颗粒更有效地钉扎，从而使Jc增强适用于高磁场和高温。此外，Jc 和 n 值之间的负相关性在高温下在增加磁场的情况下出现，对于具有可能偏离 c 轴的相关纳米颗粒行的薄膜。这些表明混合磁通钉扎不仅取决于一维 (1D) 和三维钉扎中心 (3D-PC) 的组合，还取决于 3D-PC 的尺寸和空间分布。

项目成果

EBE法で作製したAlテープ基板上MgB_2薄膜の磁束ピンニング特性

EBE法制备Al带基MgB_2薄膜的磁通钉扎特性

• 发表时间: 2011
• 作者: T. Sueyoshi;M. Mori;K. Tsuchiya;K. Yonekura;T. Fujiyoshi;F. Mitsugi;T. Ikegami;佐藤昭,V. Ryzhii,尾辻泰一;石黒駿介，河村希典;藤吉孝則,米倉健志,末吉哲郎,沖田健祐,土井俊哉,吉原和樹,淡路智,渡辺和雄
• 通讯作者: 藤吉孝則,米倉健志,末吉哲郎,沖田健祐,土井俊哉,吉原和樹,淡路智,渡辺和雄

YBCO薄膜のJ_cとn値に対する高密度の柱状欠陥の影響

高密度柱状缺陷对YBCO薄膜J_c和n值的影响

• 发表时间: 2011
• 作者: 湯本 英治;及川 郷志，河村 希典;末吉哲郎,西村太宏,米倉健志,藤吉孝則,光木文秋,池上知顯
• 通讯作者: 末吉哲郎,西村太宏,米倉健志,藤吉孝則,光木文秋,池上知顯

Angular dependence of critical current density in BaZrO3 / YBa2Cu3Oy quasi-multilayered films with columnar defects

具有柱状缺陷的 BaZrO3 / YBa2Cu3Oy 准多层膜中临界电流密度的角度依赖性

• DOI: 10.1016/j.physc.2013.04.073
• 发表时间: 2013
• 期刊: Physica C
• 影响因子: 1.7
• 作者: T. Sueyoshi;T. Koutaki;T. Fujiyoshi;F. Mitsugi;T. Ikegami;N. Ishikawa
• 通讯作者: N. Ishikawa

Flux pinning properties of splayed columnar defects ranging from B || c-axis to B || ab-plane in GdBCO coated conductors

• DOI: 10.1016/j.physc.2014.02.012
• 发表时间: 2014-09
• 期刊: Physica C-superconductivity and Its Applications
• 影响因子: 1.7
• 作者: T. Sueyoshi;Y. Furuki;T. Kai;T. Fujiyoshi;N. Ishikawa

Influence of crossing angles of columnar defects on vortex glass transition in YBCO thin films

YBCO薄膜中柱状缺陷交叉角对涡旋玻璃化转变的影响

• 发表时间: 2011
• 期刊: Physica C 472
• 作者: T. Sueyoshi;T. Sogo;K. Yonekura;T. Fujiyoshi;F. Mitsugi;T. Ikegami;N. Ishikawa;S. Awaji;K. Watanabe
• 通讯作者: K. Watanabe