Enhancement of critical current density by artificial pinning centers in high-T_c superconducting multilayered films with sandwich-structures

2010 Fiscal Year Final Research Report

• Project/Area Number: 21760236
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Electronic materials/Electric materials
• Research Institution: Kumamoto University
• Principal Investigator: SUEYOSHI Tetsuro Kumamoto University, 自然科学研究科, 助教 (20315287)
• Project Period (FY): 2009 – 2010
• Keywords: 超伝導材料・素子 / ナノ構造制御 / 低消費電力

Research Abstract

In this work, an improvement of in-field critical current density J_c in high-T_c superconducting thin films were attempted by multilayering with sandwich structure which consisted of non-doped superconducting YBCO layers and BaZrO_3-doped YBCO layers. We clarified that by controlling the YBCO layer thickness and the growth temperature, the distribution of the BaZrO_3 nano-particles and the angular dependence of J_c in BaZrO_3/YBCO multilayered films varied in a controlled way.

Research Products

• [Journal Article] Angular dependences of critical current density in YBCO thin films with crossed columnar defects (2010)
  • Author(s): T.Sueyoshi, S.Yutani, T.Sogo, A.Adachi, K.Yonekura, T.Fujiyoshi, F.Mitsugi, T.Ikegami, N.Ishikawa, S.Awaji, K.Watanabe
  • Journal Title: Physica C Vol.47 Pages: 1295-1299
  • Peer Reviewed
• [Journal Article] Flux pinning properties of MgB_2 thin films with Ti buffer prepared by molecular beam epitaxy (2010)
  • Author(s): K.Yonekura, A.Kugo, T.Fujiyoshi, T.Sueyoshi, Y.Harada, M.Yoshizawa, T.Ikeda, S.Awaji, K.Watanabe
  • Journal Title: Physica C Vol.47 Pages: 1461-1464
  • Peer Reviewed
• [Journal Article] 柱状欠陥を導入したYBa_2Cu_3O_y 超伝導薄膜における電界-電流密度特性の磁場角度依存性 (2010)
  • Author(s): 藤吉孝則, 末吉哲郎, 春田正和, 米倉健志, 池上知顯, 石川法人, 淡路智, 渡辺和雄
  • Journal Title: 低温工学 44巻 Pages: 517-522
  • Peer Reviewed
• [Journal Article] Flux pinning properties of nano-rods comprised of BaMO_3 (M = Zr, Sn) in REBa_2Cu_3O_7-8 thin films prepared by PLD method (2009)
  • Author(s): T.Sueyoshi, K.Yonekura, R.Kajita, T.Fujiyoshi, M.Mukaida, R.Teranishi, H.Kai, K.Matsumoto, Y.Yoshida, A.Ichinose, S.Horii, S.Awaji, K.Watanabe
  • Journal Title: Physica C Vol.469 Pages: 1396-1399
  • Peer Reviewed
• [Journal Article] Two-dimensional flux pinning in multilayered MgB_2/Ni thin films prepared by electron beam evaporation (2009)
  • Author(s): K.Yonekura, R.Kajita, T.Fujiyoshi, T.Sueyoshi, T.Doi, H.Kitaguchi, S.Awaji, K.Watanabe
  • Journal Title: Physica C Vol.469 Pages: 1567-1570
  • Peer Reviewed
• [Presentation] 3方向の柱状欠陥を有するYBCO薄膜のJ_cとn値の磁場特性 (2011)
  • Author(s): 末吉哲郎, 西村太宏, 米倉健志, 藤吉孝則, 光木文秋, 池上知顯
  • Organizer: 第58回応用物理学関係連合講演会
  • Place of Presentation: 神奈川工科大学,神奈川(震災の影響により開催中止,発表は成立)
  • Year and Date: 20110324-20110327
• [Presentation] 方向分散した柱状欠陥を含むYBa_2Cu_3O_y薄膜の臨界電流密度の磁場角度依存性 (2010)
  • Author(s): 末吉哲郎, 西村太宏, 米倉健志, 藤吉孝則, 光木文秋, 池上知顯, 石川法人
  • Organizer: 第83回2010年度秋季低温工学・超電導学会
  • Place of Presentation: かごしま県民交流センター,鹿児島
  • Year and Date: 2010-12-01
• [Presentation] バイクリスタルSrTiO_3基板に作成したYBCO薄膜の第三高調波電圧誘導法によるJ_c測定 (2010)
  • Author(s): 沖田健佑, 畠中裕宅, 末吉哲郎, 藤吉孝則, 土井俊哉
  • Organizer: 第83回2010年度秋季低温工学・超電導学会
  • Place of Presentation: かごしま県民交流センター,鹿児島
  • Year and Date: 2010-12-01
• [Presentation] Influence of crossing angles of columnar defects on vortex glass transitions in YBCO thin films (2010)
  • Author(s): T.Sueyoshi, T.Sogo, K.Yonekura, T.Fujiyoshi, F.Mitsugi, T.Ikegami, N.Ishikawa, S.Awaji, K.Watanabe
  • Organizer: 23rd International symposium on superconductivity
  • Place of Presentation: Tsukuba, Japan
  • Year and Date: 2010-11-02
• [Presentation] Growth temperature dependence of pinning properties in ErBa_2Cu_3O_y thin films with nano-rods (2010)
  • Author(s): M.Haruta, T.Sueyoshi, T.Fujiyoshi, M.Mukaida, H.Kai, K.Matsumoto, P.Mele, T.Maeda, S.Horii
  • Organizer: 23rd International symposium on superconductivity
  • Place of Presentation: Epochal Tsukuba, Japan
  • Year and Date: 2010-11-02
• [Presentation] Flux pinning properties of MgB_2 thin films on Al tape substrates by electron beam evaporation (2010)
  • Author(s): K.Yonekura, T.Fujiyoshi, T.Sueyoshi, T.Doi, T.Nishimura
  • Organizer: 23rd International symposium on superconductivity
  • Place of Presentation: Epochal Tsukuba, Japan
  • Year and Date: 2010-11-02
• [Presentation] The inductive measurement of in-field critical current density of YBCO thin films using the third harmonic voltage method (2010)
  • Author(s): K.Okita, Y.Hatanaka, A.Adachi, T.Fujiyoshi, T.Sueyoshi, T.Doi
  • Organizer: 23rd International symposium on superconductivity
  • Place of Presentation: Epochal Tsukuba, Japan
  • Year and Date: 2010-11-02
• [Presentation] 高密度の柱状欠陥を導入したYBCO薄膜J_cとn値の磁場角度依存性 (2010)
  • Author(s): 末吉哲郎, 西村太宏, 米倉健志, 藤吉孝則, 光木文秋, 池上知顯, 石川法人
  • Organizer: 2010年第71回応用物理学会学術講演会
  • Place of Presentation: 長崎大学,長崎
  • Year and Date: 2010-09-14
• [Presentation] 電子ビーム蒸着法でAlテープ基板上に作製したMgB_2超伝導薄膜の磁束ピンニング特性 (2010)
  • Author(s): 米倉健志, 藤吉孝則, 末吉哲郎, 土井俊哉, 西川隆文
  • Organizer: 第82回2010年度春季低温工学・超電導学会
  • Place of Presentation: 川崎産業振興会館,神奈川
  • Year and Date: 2010-05-13
• [Presentation] YBa_2Cu_3O_y擬似多層膜の臨界電流密度に対するBaZrO_3のドープ量と重イオン照射の影響 (2010)
  • Author(s): 末吉哲郎, 十河雄大, 森脇聡, 米倉健志, 藤吉孝則, 光木文秋, 池上知顯, 石川法人
  • Organizer: 第82回2010年度春季低温工学・超電導学会
  • Place of Presentation: 川崎産業振興会館,神奈川
  • Year and Date: 2010-05-12
• [Presentation] 第三高調波電圧誘導法によるYBa_2Cu_3O_y薄膜の磁場中臨界電流密度の測定 (2010)
  • Author(s): 沖田健佑, 足立明隆, 末吉哲郎, 藤吉孝則, 土井俊哉
  • Organizer: 第82回2010年度春季低温工学・超電導学会
  • Place of Presentation: 川崎産業振興会館,神奈川
  • Year and Date: 2010-05-12
• [Presentation] YBCO薄膜の磁束ピンニング特性に対する柱状欠陥の交差面の影響 (2010)
  • Author(s): 末吉哲郎, 十河雄大, 米倉健志, 藤吉孝則, 光木文秋, 池上知顯, 石川法人
  • Organizer: 第57回応用物理学関係連合講演会
  • Place of Presentation: 東海大学,神奈川
  • Year and Date: 2010-03-18
• [Presentation] Al基板上に作製したMgB_2薄膜の輸送特性 (2010)
  • Author(s): 藤吉孝則, 米倉健志, 末吉哲郎, 土井俊哉, 西川隆文
  • Organizer: 第57回応用物理学関係連合講演会
  • Place of Presentation: 東海大学,神奈川
  • Year and Date: 2010-03-18
• [Presentation] 交差した柱状欠陥を導入したYBCO薄膜の臨界電流密度の磁場角度依存性 (2009)
  • Author(s): 末吉哲郎, 十河雄大, 米倉健志, 藤吉孝則, 光木文秋, 池上知顯, 石川法人, 淡路智, 渡辺和雄
  • Organizer: 第81回2009年度秋季低温工学・超電導学会
  • Place of Presentation: 岡山大学,岡山
  • Year and Date: 2009-11-18
• [Presentation] 第三高調波電圧誘導法を用いた高温超伝導体の臨界電流密度の非破壊測定 (2009)
  • Author(s): 足立明隆, 沖田健佑, 藤吉孝則, 末吉哲郎, 土井俊哉
  • Organizer: 第81回2009年度秋季低温工学・超電導学会
  • Place of Presentation: 岡山大学,岡山
  • Year and Date: 2009-11-18
• [Presentation] Angular dependence of critical current densities in YBCO thin films with crossed columnar defects (2009)
  • Author(s): T.Sueyoshi, S.Yutani, T.Sogo, A.Adachi, K.Yonekura, T.Fujiyoshi, F.Mitsugi, T.Ikegami, N.Ishikawa, S.Awaji, K.Watanabe
  • Organizer: 22nd International symposium on superconductivity
  • Place of Presentation: Epochal Tsukuba, Japan
  • Year and Date: 2009-11-03
• [Presentation] Flux pinning properties of MgB_2 thin films with Ti buffer prepared by molecular beam epitaxy (2009)
  • Author(s): K.Yonekura, A.Kugo, T.Fujiyoshi, T.Sueyoshi, Y.Harada, M.Yoshizawa, T.Ikeda, S.Awaji, K.Watanabe
  • Organizer: 22nd International symposium on superconductivity
  • Place of Presentation: Epochal Tsukuba, Japan
  • Year and Date: 2009-11-03
• [Presentation] 照射柱状欠陥を導入したYBa_2Cu_3O_y薄膜の磁束ピンニング特性 (2009)
  • Author(s): 藤吉孝則, 末吉哲郎, 米倉健志, 足立明隆, 光木文秋, 池上知顯, 知見康弘, 石川法人, 淡路智, 渡辺和雄
  • Organizer: 2009年第70回応用物理学会学術講演会
  • Place of Presentation: 富山大学,富山
  • Year and Date: 2009-09-09
• [Presentation] BaZrO_3, YSZを用いたYBCO擬似多層膜の磁束ピンニング特性 (2009)
  • Author(s): 末吉哲郎, 嶋田充剛, 油谷真吾, 茅野伊三郎, 藤吉孝則, 光木文秋, 池上知顯
  • Organizer: 第80回2009年度春季低温工学・超電導学会
  • Place of Presentation: 早稲田大学(東京)
  • Year and Date: 2009-05-14
• [Presentation] 様々に傾いた柱状欠陥を含むYBCO薄膜の臨界電流密度の磁場角度依存性 (2009)
  • Author(s): 末吉哲郎, 油谷真吾, 藤吉孝則, 光木文秋, 池上知顯, 知見康弘, 石川法人
  • Organizer: 第80回2009年度春季低温工学・超電導学会
  • Place of Presentation: 早稲田大学,東京
  • Year and Date: 2009-05-13