2012 Fiscal Year Annual Research Report
リール式高速磁気顕微鏡による長尺高温超伝導線材の局所不均一性の解明と高性能化
Project/Area Number |
24360122
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Research Institution | Kyushu University |
Principal Investigator |
木須 隆暢 九州大学, システム情報科学研究院, 教授 (00221911)
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Co-Investigator(Kenkyū-buntansha) |
井上 昌睦 九州大学, システム情報科学研究院, 准教授 (80346824)
東川 甲平 九州大学, システム情報科学研究院, 准教授 (40599651)
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Keywords | 高温超伝導線材 / 臨界電流 / 均一性 / 欠陥検出 / マルチスケール / 磁気顕微鏡 / ホール素子 / 非破壊・非接触 |
Research Abstract |
当初の実施計画の項目をほぼ遠成すると共に、既に100m級線材の評価に成功するなど、次年度に予定していた項目も一部前倒して成果を得ており、順調に進展している。本年度得られた主な成果は次の通りである。 (1)GaAs/AlxGa1-xAsヘテロ接合を用いた多チャンネルホール素子の開発と磁気顕微システムへの適用:30um角の感受領域を有する素子を作製し、磁気顕微鏡用ヘッドとして用い高解像度の磁気像を取得した。 (2)臨界電流(Ic)劣化部位の高精度な位置特定とマイクロサンプリングTEM観察による劣化機構の解明:開発した磁気顕微鏡を用い希土類系コート多芯線材のIc分布評価を行い、局所Ic低下位置を特定すると共に、マイクロサンプリングによるTEM断面観察を行い、多芯加工時のIc低下の原因を明らかとした。 (3)希土類系コート線材の細線加工プロセスの最適化:本研究で提案する2次元的なIc評価結果をもとに、線材の電磁気的有効幅という新しい指標を提出し、細線加工時の線材端部の劣化を示す性能指標としての重要性を明らかとした。また、本評価手法を適用する事で、細線加工プロセスの最適化を実現した。 (4)Icの統計分布と通電特性に関する理論的考察と実験による検証:磁気顕微法によって得られる局所Ic分布をもとに、マクロスケールの電流-電圧(I-V)特性を導出し、四端子法による実測結果との比較によってその定量性を検証した。 (5}短尺Bi-2223多芯線材を用いた磁化電流検出の原理検証:短尺のBi系高温超伝導多芯線材を用い、フィラメント間のカップリングのため、Bi系多芯線材においても本手法が適用可能であることを検証した。 (6)長尺高温超伝導線材の評価:前項の成果を受けて、市販の100mのBi-2223長尺テープ線材の評価を行い、テープ面内におけるIcの2次元的空間分布の計測に初めて成功した。長尺線の高解像度計測によって、従来法では検出不可能な、長周期に離散的に点在する局所欠陥の検出にも成功し、実用長尺線の信頼性評価手法として、本手法は優れたポテンシャルを有する事を明らかとした。
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Current Status of Research Progress |
Current Status of Research Progress
1: Research has progressed more than it was originally planned.
Reason
Bi系高温超伝導線材による評価では、短尺線での原理検証を行うにとどまらず、100m級長尺線材の測定に成功するなど、次年度の予定を前倒して実施しており、順調に進捗している。
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Strategy for Future Research Activity |
多チャンネルホール磁気センサを用いたデータ収録システムの並列化によって、評価速度の高速化を図ると共に、数100m級長尺線材における信頼性の高いデータを取得し、理論的考察によって高温超伝導線材の均一性の〓念を確立する。並行して、検知された欠陥部位の組織観察により、原因となる因子を特定し、プロセス改善のための知見を得る。
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Expenditure Plans for the Next FY Research Funding |
当該経費は、試験に用いる希土類系長尺超伝導線材の購入費であるが、メーカーの製造容量の制限による納期遅延のため、次年度使用額として計上した。線材の発注は既に終えており、平成25年5月に納入予定である事から、速やかに当該予算の執行は出来る予定である。
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Research Products
(68 results)
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[Journal Article] Lateral Distribution of Critical Current Density in Coated Conductors Slit by Different Cutting Methods2013
Author(s)
K. Higashikawa, K. Katahira, K. Okumura, K. Shiohara, M. Inoue, T. Kiss, Y. Shingai, M. Konishi, K. Ohmatsu, M. Yoshizumi, T. Izumi
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Journal Title
IEEE Trans. Appl. Supercond.
Volume: Vol. 23
Pages: 6602704 (4page)
DOI
Peer Reviewed
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[Journal Article] High-speed scanning Hall-probe microscopy for two-dimensional characterization of local critical current density in long-length coated2012
Author(s)
K. Higashikawa, K. Shiohara, Y. Komaki, K. Okumura, K. Imamura, M. Inoue, T. Kiss, Y. Iijima, T. Saitoh, T. Machi, M. Yoshizumi, T. Izumi, H. Okamoto
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Journal Title
Physics Procedia
Volume: Vol. 27
Pages: 228-231
DOI
Peer Reviewed
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[Presentation] Influence of Different Slitting Methods on Lateral Distribution of Critical Current Density in REBCO Coated Conductors2013
Author(s)
Kenta Katahira, Kohei Higashikawa, Atsushi Yamamoto, Masayoshi Inoue, Takanobu Kiss, Yuki Shingai, Masaya Konishi, Kazuya Ohmatsu, Masateru Yoshizumi, Teruo Izumi
Organizer
2013 International Symposium on Information Science and Electrical Engineering(ISEE2013)
Place of Presentation
Fukuoka, Japan
Year and Date
2013-01-11
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[Presentation] Functions of Scanning Hall-Probe Microscopy on the Characterization of Local Properties in RE-123 Coated Conductors2013
Author(s)
Kei Shiohara, Kohei Higashikawa, Masayoshi Inoue, Takanobu Kiss, Takato Machi, Noriko Chikumoto, Lee Sergey, Keiichi Tanabe, Masateru Yoshizumi, Teruo Izumi
Organizer
2013 International Symposium on Information Science and Electrical Engineering(ISEE2013)
Place of Presentation
Fukuoka, Japan
Year and Date
2013-01-11
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[Presentation] Non-Destructive Characterization of Local Critical Current Properties in REBCO Slit Coated Conductor Based on Reel-to-Reel Magnetic Microscopy2013
Author(s)
Atsushi Yamamoto, Kohei Higashikawa, Kenta Katahira, Masayoshi Inoue, Takanobu Kiss, Yuki Shingai, Masaya Konishi, Kazuya Ohmatsu, Masateru Yoshizumi, Teruo Izumi
Organizer
2013 International Symposium on Information Science and Electrical Engineering(ISEE2013)
Place of Presentation
Fukuoka, Japan
Year and Date
2013-01-11
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[Presentation] Contactless Measurement on Angular Dependent Jc in REBCO Coated Conductor by Magnetic Moment2013
Author(s)
Suguru Gangi, Masahito Hiromatsu, Kazutaka Imamura, Kohei Higashikawa, Masayoshi Inoue, Takanobu Kiss, Masateru Yoshizumi, Teruo Izumi, Hiroshi Tobita, Takashi Saitoh
Organizer
2013 International Symposium on Information Science and Electrical Engineering(ISEE2013)
Place of Presentation
Fukuoka, Japan
Year and Date
2013-01-11
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[Presentation] Impact of Performance Improvement of RE-123 Coated Conductor on Magnet Applications2013
Author(s)
K. Higashikawa, K. Imamura, M. Inoue, T. Kiss, S. Awaji, K. Watanabe, Y. Iijima, T. Saitoh, H. Tobita, A. Ibi, M. Yoshizumi, T. Izumi, Y. Shiohara
Organizer
2013 International Symposium on Information Science and Electrical Engineering(ISEE2013)
Place of Presentation
Fukuoka, Japan
Year and Date
2013-01-11
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[Presentation] In-field current transport property of high Ic YxGd1-xBa2Cu3Oy coated conductors fabricated by TFA-MOD process2012
Author(s)
M. Inoue, T. Sakakibara, K. Imamura, K. Higashikawa, T. Kiss, K. Kimura, Y. Takahashi, T. Koizumi, T. Hasegawa, T. Nakamura, M. Yoshizumi, T. Izumi
Organizer
25th International Symposium on Superconductivity(ISS2012)
Place of Presentation
Tokyo, Japan
Year and Date
2012-12-05
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[Presentation] Nondestructive reel-to-reel characterization system for in-plane 2D distribution of critical current density in long coated conductors2012
Author(s)
K. Higashikawa, K. Okumura, K. Shiohara, K. Imamura, M. Inoue, T. Kiss, K. Kimura, T. Koizumi, N. Aoki, Y. Shingai, M. Konishi, K. Ohmatsu, T. Machi, M. Yoshizumi, T. Izumi
Organizer
25th International Symposium on Superconductivity(ISS2012)
Place of Presentation
Tokyo, Japan(invited)
Year and Date
2012-12-04
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[Presentation] Magnetic moment in Gd1Ba2Cu3O7-δ coated conductor under inclined external magnetic field2012
Author(s)
T. Kiss, S. Gangi, M. Hiromatsu, K. Imamura, A. Yamamoto, H. Katoh, K. Higashikawa, M. Inoue, M. Yoshizumi, T. Izumi, Y. Shiohara
Organizer
25th International Symposium on Superconductivity(ISS2012)
Place of Presentation
Tokyo, Japan
Year and Date
2012-12-04
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[Presentation] Contactless measurement on angular dependent Jc in REBCO coated conductor2012
Author(s)
S. Gangi, M. Hiromatsu, K. Imamura, K. Higashikawa, M. Inoue, T. Kiss, M. Yoshizumi, T. Izumi, H. Tobita, T. Saitoh
Organizer
Conference on Coated Conductors for Applications(CCA2012)
Place of Presentation
Heidelberg, Germany
Year and Date
2012-11-14
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[Presentation] Non-destructive characterization of REBCO slit coated conductor based on reel-to-reel scanning Hall-probe magnetic microscopy2012
Author(s)
A. Yamamoto, K. Higashikawa, K. Katahira, M. Inoue, T. Kiss, Y. Shingai, M. Konishi, K. Ohmatsu, M. Yoshizumi, T. Izumi
Organizer
Conference on Coated Conductors for Applications(CCA2012)
Place of Presentation
Heidelberg, Germany
Year and Date
2012-11-14
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[Presentation] Enhancement of in-field current transport properties in GdBa2Cu3O7-δ coated conductor by BaHf03 doping2012
Author(s)
M. Inoue, Y. Yamaguchi, T. Sakakibara, K. Higashikawa, K. Imamura, T. Kiss, S. Awaji, K. Watanabe, H. Tobita, M. Yoshizumi, T. Izumi
Organizer
2012 Applied Superconductivity Conference (ASC2012)
Place of Presentation
Portland, Oregon, USA
Year and Date
2012-10-11
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[Presentation] Estimation of angular dependent Jc in coated conductors by magnetic moment vector measurements2012
Author(s)
T. Kiss, S. Gangi, M. Hiromatsu, K. Imamura, K. Higashikawa, M. Inoue, H. Tobita, M. Yoshizumi, T. Izumi
Organizer
2012 Applied Superconductivity Conference (ASC2012)
Place of Presentation
Portland, Oregon, USA
Year and Date
2012-10-11
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[Presentation] Multi-scale and multi-physics analysis of REBa2Cu3O7-δ coated conductors2012
Author(s)
T. Kiss, K. Higashikawa, A. Matsekh, M. Inoue, H. Tobita, M. Yoshizumi, T. Izumi, Y. Iijima, T. Saitoh, R. Yoshida, T. Kato, T. Hirayama, T. Kaijhara, S. Hata, H. Nakashima
Organizer
2012 Applied Superconductivity Conference (ASC2012)
Place of Presentation
Portland, Oregon, USA
Year and Date
2012-10-11
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[Presentation] Reel-to-reel scanning Hall-probe microscopy for in-plane distribution of critical current density in long coated conductors2012
Author(s)
K. Higashikawa, K. Okumura, K. Shiohara, K. Imamura, M. Inoue, T. Kiss, K. Kimura, T. Koizumi, N. Aoki, M. Yoshizumi, T. Izumi, H. Okamoto
Organizer
2012 Applied Superconductivity Conference (ASC2012)
Place of Presentation
Portland, Oregon, USA(invited)
Year and Date
2012-10-11
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[Presentation] Lateral distribution of critical current density in coated conductors slit by different cutting methods2012
Author(s)
K.Higashikawa, K. katahira, K.Okumura, K. Shiohara, M. Inoue, T. Kiss, M. Konishi, K. Ohmatsu, M. Yoshizumi, T. Izumi
Organizer
2012 Applied Superconductivity Conference (ASC2012)
Place of Presentation
Portland, Oregon, USA
Year and Date
2012-10-10
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[Presentation] Present status and future prospects of critical currents in GdJBa2Cu3O7-δcoated conductors2012
Author(s)
T. Kiss, K. Higashikawa, M. Inoue, H. Tobita, M. Yoshizumi, T. Izumi, Y. Iijima, T. Saitoh, S. Awaji, K. Watanabe
Organizer
IUMRS-ICEM 2012
Place of Presentation
Yokohama, Japan(invited)
Year and Date
2012-09-27
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[Presentation] In-field current transport properties in advanced GdBCO coated conductor2012
Author(s)
M. Inoue, T. Sakakibara, Y. Yamaguchi, K. Imamura, K. Higashikawa, T. Kiss, S. Awaji, K. Watanabe, H. Tobita, M. Yoshizumi, T. Izumi
Organizer
The 2nd Korea Japan Superconducting Technologies for Electric Power System
Place of Presentation
Chagwon National University, Changwon Korea
Year and Date
2012-08-09
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[Presentation] Nondestructive RtR characterization of long GdBCO coated conductor2012
Author(s)
K. Higashikawa, K. Okumura, K. Shiohara, K. Imamura, M. Inoue, T. Kiss, K. Kimura, T. Koizumi, N. Aoki, Y. Shingai, M. Konishi, K. Ohmatsu, T. Machi, M. Yoshizumi, T. Izumi
Organizer
The 2nd Korea Japan Superconducting Technologies for Electric Power System
Place of Presentation
Chagwon National University, Changwon Korea
Year and Date
2012-08-09
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[Presentation] Visualizalion of Local Dissipation and Crystallinity in SmBCO Coated Conductor by Laser Scanning Microscopy2012
Author(s)
T. Tanoue, K. Ooike, A. Matsekh, M. Inoue, T. Kiss, S. Hata, T. Kajihara, K. Ikeda, E. Nakashima, G. Kim, W. Jo, H.S. Ha, S.S. Oh
Organizer
The 2nd Korea Japan Superconducting Technologies for Electric Power System
Place of Presentation
Chagwon National University, Changwon Korea
Year and Date
2012-08-09
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[Presentation] Evaluation of Critical Current Properties in BaHfO3 Doped GdBCuO Coated Conductor by Angular Resolved Magnetic Moment Vector Measurements2012
Author(s)
S. Gangi, M. Hiromatsu, K. Imamura, Y. Yamaguchi, T. Sakakibara, K. Higashikawa, M. Inoue, T. Kiss, H. Tobita, M. Yoshizumi, T. Izumi
Organizer
The 2nd Korea Japan Superconducting Technologies for Electric Power System
Place of Presentation
Chagwon National University, Changwon Korea
Year and Date
2012-08-09
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[Presentation] Characterization of HTS wire for power device application2012
Author(s)
T. Kiss, Y. Yamaguchi, T. Sakakibara, K. Imamura, K. Higashikawa, M. Inoue, S. Awaji, K. Watanabe, Y. Iijima, T. Saitoh, H. Tobita, M. Yoshizumi, T. Izumi
Organizer
2012 Japan-Korea Workshop on Superconducting Technologies for Electric Power System
Place of Presentation
Fukuoka, Japan
Year and Date
2012-05-19
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[Presentation] Observation of local superconducting property in SmBCO coated conductor by using low temperature laser scanning microscopy2012
Author(s)
T. Tanoue, K. Ooike, A. Matsekh, M. Inoue, T. Kiss, S. Hata, T. Kajihara, K. Ikeda, E. Nakashima, G. Kim, W. Jo, H.S. Ha, S.S. Oh
Organizer
ICEC24-ICMC2012
Place of Presentation
Fukuoka, Japan
Year and Date
2012-05-17
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[Presentation] Functions of scanning Hall-probe microscopy on the characterization of local properties in RE-123 coated conductors (compared with differenct characterization)2012
Author(s)
K. Shiohara, K. Higashikawa, M. Inoue, T. Kiss, T. Machi, N. Chikumoto, L. Sergey, K. Tanabe, M. Yoshizumi, T. Izumi
Organizer
ICEC24-ICMC2012
Place of Presentation
Fukuoka, Japan
Year and Date
2012-05-17
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[Presentation] Evaluation of angular dependent critical currents in BaHfO3 doped GdBa2Cu3O7-δcoated conductor by magnetic moment vector2012
Author(s)
S. Gangi, M. Hiromatsu, K. Imamura, Y. Yamaguchi, T. Sakakibara, K. Higashikawa, M. Inoue, T. Kiss, H. Tobita, M. Yoshizumi, T. Izumi
Organizer
ICEC24-ICMC2012
Place of Presentation
Fukuoka, Japan
Year and Date
2012-05-15
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[Presentation] Improvement of flux creep properties in BaHfO3 doped GdBCO coated conductors as artificial pinning centers2012
Author(s)
M. Hiromatsu, S. Gangi, K. Imamura, T. Sakakibara, Y. Yamaguchi, K. Higashikawa, M. Inoue, T. Kiss, Y. Iijima, T. Saitoh, H. Tobita, T. Izumi, M. Yoshizumi
Organizer
ICEC24-ICMC2012
Place of Presentation
Fukuoka, Japan
Year and Date
2012-05-15
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[Presentation] In-field critical current property of BaHfO3 doped GdBa2Cu3O7-δ coated conductor2012
Author(s)
T. Sakakibara, Y. Yamaguchi, K. Imamura, K. Higashikawa, T. Kiss, S. Awaji, K. Watanabe, H. Tobita, M. Yoshizumi, T. Izumi
Organizer
ICEC24-ICMC2012
Place of Presentation
Fukuoka, Japan
Year and Date
2012-05-15
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[Presentation] Significant Enhancement of In-field Critical Current in GdBCO Coated Conductors by BaHfO3 Addition in Pulsed Laser Deposition2012
Author(s)
T. Kiss, Y. Yamaguchi, T. Sakakibara, K. Imamura, K. Higashikawa, M. Inoue, S. Awaji, K. Watanabe, H. Tobita, M. Yoshizumi, T. Izumi
Organizer
2012 MRS Spring Meeting
Place of Presentation
San Francisco, California, USA
Year and Date
2012-04-10
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[Presentation] Coordinated Analysis of Current Lirmiting Obstacles in SmlBa2Cu307-δ Coated Conductors by Hybrid Microscopy Techniques2012
Author(s)
T. Kiss, A. Matsekh, M. Inoue, T. Kaijhara, K. Ikeda, S. Hata, H. Nakashima, G. Kim, W. Jo, H.S. Ha, S.S. Oh, S.H. Moon
Organizer
2012 MRS Spring Meeting
Place of Presentation
San Francisco, California, USA
Year and Date
2012-04-10
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