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超伝導-磁性複合薄膜を用いた量子化磁束の可視化と微細磁気構造の定量評価

Research Project

Project/Area Number 17654064
Research Category

Grant-in-Aid for Exploratory Research

Allocation TypeSingle-year Grants
Research Field Condensed matter physics II
Research InstitutionThe University of Tokyo

Principal Investigator

為ケ井 強 (為ヶ井 強)  東京大学, 大学院工学系研究科, 助教授 (30183073)

Co-Investigator(Kenkyū-buntansha) 徳永 将史  東京大学, 大学院工学系研究科, 助手 (50300885)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 2006: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2005: ¥1,400,000 (Direct Cost: ¥1,400,000)
Keywords磁気光学法 / 超伝導・磁性複合膜 / 磁束量子 / 超伝導-磁性複合膜
Research Abstract

昨年度作製した超伝導体-磁性体複合膜である磁性ガーネット膜に直接スパッター法で超伝導体であるNbを蒸着した膜における磁束量子の観測を引き続き行った。一方、他の超伝導体を用いた例としてPb薄膜を作製し、さらにそこにフォトリソグラフィーによる微細加工を施すことにより、超伝導ネットワークを形成した。一辺数μmの縦・横数格子からなる有限系ネットワークから、縦・横100格子以上の実質的に無限と見なせるネットワークの形成に成功した。これらの超伝導ネットワークを磁気光学観察することにより、ねらい通りの磁気パターンが形成されていることを確認することができた。今後は磁性ガーネット上により細かなネットワークパターンを形成し、磁気光学観察することが必要である。
微細な磁気構造を磁気光学効果を用いて可視化する為、磁性ガーネット膜の作製を有機金属堆積(MOD)法の自動化を行った。MOD法では、一回の500A程度しか堆積できないため、実用的な厚さである1μm程度の薄膜を作製するには、数十回行程を繰り返す必要があり、この間に薄膜が汚染される等の問題がある。そこで、塗布、乾燥、焼結を連続的に同一の場所で行えるようなシステムを組み上げた。当初、乾燥には高周波加熱法を用いていたが、低いパワーでの安定性に問題があったため、熱風による乾燥に切り替えた。このようにして自動MODシステムで作製した磁性ガーネット膜に対して磁気光学的評価を行った。

Report

(2 results)
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • Research Products

    (54 results)

All 2007 2006 2005

All Journal Article (54 results)

  • [Journal Article] Spatiotemporal vortex matter oscillations in Bi_2Sr_2CaCu_2O_<8+d> crystals2007

    • Author(s)
      B.Kalisky
    • Journal Title

      Phys. Rev. Lett. 98

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Dynamic order-to-metastable-disorder vortex matter transition in Bi_2Sr_2CaCu_2O_<8+d>2007

    • Author(s)
      B.Kalisky
    • Journal Title

      Phys. Rev. Lett. 98

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Interplay of anisotropy and disorder in the doping-dependent melting and glass transitions of vortices in Bi_2Sr_2CaCu_2O_<8+d>2007

    • Author(s)
      H.Beidenkopf
    • Journal Title

      Phys. Rev. Lett. 98

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Magneto-optical imaging of vortex lensing in Bi_2Sr_2CaCu_2O_<8+y>2007

    • Author(s)
      T.Tamegai
    • Journal Title

      Physica C (印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Anisotropic superconductivity in Lu_2Fe_3Si_52007

    • Author(s)
      T.Tamegai
    • Journal Title

      Physica C (印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Double transition in PrOs_4Sb_<12> probed by local magnetization measurements using Hall probe array2007

    • Author(s)
      S.Kasahara
    • Journal Title

      Physica C (印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Competition between lensing and dome formation of vortices in Bi_2Sr_2CaCu_2O_<8+y>2007

    • Author(s)
      T.Tamegai
    • Journal Title

      Physica C (印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Positive local magnetization in the superconducting state of PrOs_4Sb_<12>2007

    • Author(s)
      S.Kasahara
    • Journal Title

      Physica C (印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Anisotropic superconducting properties in Sc_5Ir_4Si_<10>2007

    • Author(s)
      G.J.Li
    • Journal Title

      Physica C (印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Quasi-one-dimensional Superconductivity in Sc_5Ir_4Si_<10> and Lu_5Ir_4Si_<10> Single Crystals2007

    • Author(s)
      T.Tamegai
    • Journal Title

      Int. J. Mod. Phys. (印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Anisotropic s-wave superconductivity in single crystals CaAlSi from penetration depth measurements2006

    • Author(s)
      R.Prozorov
    • Journal Title

      Phys. Rev. B 73

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Multivalued memory effects in electronic phase-change manganites2006

    • Author(s)
      H.Song
    • Journal Title

      Phys. Rev. B 74

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Effect of anisotropic superconductivity on flux pinning in Dolycrystalline MgB_22006

    • Author(s)
      Z.X.Shi
    • Journal Title

      Physica C 449

      Pages: 104-108

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Room Temperature Low-Field Colossal Magnetoresistance in La_<0.7>Sr_<0.3>MnO_32006

    • Author(s)
      S.Imamori
    • Journal Title

      Appl. Phys. Lett. 89

      Pages: 1725081-3

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Manipulation of magnetic flux landscapes in superconducting Bi_2Sr_2CaCu_2O_<8+d> crystals2006

    • Author(s)
      D.Cole
    • Journal Title

      Europhys. Lett. 76

      Pages: 1151-1157

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Vortex Lens in Bi_2Sr_2CaCu_2O_<8+y>2006

    • Author(s)
      T.Tamegai
    • Journal Title

      J. Korean Phys. Soc. 48

      Pages: 1012-1157

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Visualization and control of vortex chains in highly anisotropic superconductors2006

    • Author(s)
      T.Tamegai
    • Journal Title

      Physica C 437-438

      Pages: 314-318

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Vortex pumps in the crossing lattices regime of highly anisotropic layered superconductors2006

    • Author(s)
      D.Cole
    • Journal Title

      Physica C 437-438

      Pages: 52-56

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Improvement of vortex imaging in magneto-optical technique and Bitter decoration2006

    • Author(s)
      M.Tokunaga
    • Journal Title

      Physica C 437-438

      Pages: 52-56

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Origin of Two-Dimensional Superconductivity in CaAlSi2006

    • Author(s)
      T.Tamegai
    • Journal Title

      24th International Conference on Low Temperature Physics

      Pages: 645-646

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Search for Superconductivity in Layered Silicides2006

    • Author(s)
      T.Tamegai
    • Journal Title

      24th International Conference on Low Temperature Physics

      Pages: 647-648

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Vortex States under Tilted Fields in Bi_2Sr_2CaCu_2O_<8+y> and YBa_2Cu_3O_<7-d>2006

    • Author(s)
      T.Tamegai
    • Journal Title

      24th International Conference on Low Temperature Physics

      Pages: 791-792

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Local Field Measurements in PrOs_4Sb_<12> with Broken Time-Reversal Symmetry2006

    • Author(s)
      S.Kasahara
    • Journal Title

      24th International Conference on Low Temperature Physics

      Pages: 651-652

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Anomalous Transport Properties in Phase-Separated Manganites Tuned by Bias Currents and Voltages2006

    • Author(s)
      M.Tokunaga
    • Journal Title

      24th International Conference on Low Temperature Physics

      Pages: 1181-1182

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Size Effect on Flux Creep in Bi_2Sr_2CaCu_2O_<8+y>2006

    • Author(s)
      Z.X.Shi
    • Journal Title

      24th International Conference on Low Temperature Physics

      Pages: 789-790

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Determination of current profiles in flat superconductors using Hall probe array2006

    • Author(s)
      R.Kondo
    • Journal Title

      24th International Conference on Low Temperature Physics

      Pages: 855-856

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Correlation of the Superconductivity with the Multi-Stack Structure in MgB_2-type Superconductor CaAlSi2006

    • Author(s)
      H.Sagayama
    • Journal Title

      24th International Conference on Low Temperature Physics

      Pages: 643-644

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Flux Waves'in Bi_2Sr_2CaCu_2O_<8+d>2006

    • Author(s)
      B.Kalisky
    • Journal Title

      24th International Conference on Low Temperature Physics

      Pages: 793-794

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Control of pancake vortex distribution by in-plane fields in Bi_2Sr_2CaCu_2O_<8+y>2006

    • Author(s)
      T.Tamegai
    • Journal Title

      Physica C 445-448

      Pages: 201-205

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Effect of two-gap structure on flux pinning in MgB_22006

    • Author(s)
      J.Wang
    • Journal Title

      Physica C 445-448

      Pages: 462-465

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Anisotropic Superconductivity in Layered Silicides2006

    • Author(s)
      T.Tamegai
    • Journal Title

      Science and Technology of Advanced Materials 7

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Comparison of Physical Properties in BaAlSi and CaAlSi2006

    • Author(s)
      T.Nakagawa
    • Journal Title

      Science and Technology of Advanced Materials 7

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Ratchet without spatial asymmetry for controlling the motion of magnetic flux quanta using time-asymmetric drives2006

    • Author(s)
      Divid Cole
    • Journal Title

      Nature Materials (印刷中)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Two types of multi-stack structures in MgB2-type superconductor CaAlSi2006

    • Author(s)
      H.Sagayama
    • Journal Title

      J.Phys.Soc.Jpn (印刷中)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Bitter Decoration and Magneto-Optical Observation of Vortex Chains in High Temperature Superconductors2006

    • Author(s)
      T.Tamegai
    • Journal Title

      Pramana Journal of Physics 66

      Pages: 271-278

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Melting of heterogeneous vortex matter : The vortex ‘nanoliquid'2006

    • Author(s)
      S.S.Banerjee
    • Journal Title

      Pramana Journal of Physics 66

      Pages: 43-54

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Origin of Two-Dimensional Superconductivity in CaAlSi2006

    • Author(s)
      T.Tamegai
    • Journal Title

      AIP Conference Proceedings series (To be published)(印刷中)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Search for Superconductivity in Layered Silicides2006

    • Author(s)
      T.Tamegai
    • Journal Title

      AIP Conference Proceedings series (To be published)(印刷中)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Vortex States under Tilted Fields in Bi2Sr2CaCu208+y and YBa2Cu307-d2006

    • Author(s)
      T.Tamegai
    • Journal Title

      AIP Conference Proceedings series (To be published)(印刷中)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Anomalous Transport Properties in Phase-Separated Manganites Tuned by Bias Currents and Voltages2006

    • Author(s)
      M.Tokunaga
    • Journal Title

      AIP Conference Proceedings series (To be published)(印刷中)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Size Effect on Flux Creep in Bi2Sr2aCu208+y2006

    • Author(s)
      Z.X.Shi
    • Journal Title

      AIP Conference Proceedings series (To be published in)(印刷中)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Determination of current profiles in flat superconductors using Hall probe array2006

    • Author(s)
      R.Kondo
    • Journal Title

      AIP Conference Proceedings series (To be published)(印刷中)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Local magnetization anomalies and inhomogeneous vortex penetration in the crossing-lattices state of Bi2Sr2CaCu208+y2005

    • Author(s)
      S.Kasahara
    • Journal Title

      Phys.Rev.B. 71

      Pages: 2245051-2245055

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Current oscillation an low-field colossal magnetoresistance effect in phase-separated manganites2005

    • Author(s)
      M.Tokunaga
    • Journal Title

      Phys.Rev.Lett. 94

      Pages: 1572031-1572034

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Revealing the vortex order-disorder phase transition in small Bi2Sr2CaCu208+d crystals2005

    • Author(s)
      B.Kalisky
    • Journal Title

      Phys.Rev.B. 72

      Pages: 014531-014535

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Vortex correlations in the liquid states of Bi2Sr2CaCu208+ywith tilted columnar defects2005

    • Author(s)
      N.Kameda
    • Journal Title

      Phys.Rev.B. 72

      Pages: 0645011-0645016

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Anisotropic pancake vortex transport in the crossing lattices regime of Bi2Sr2CaCu208+d single crystals2005

    • Author(s)
      M.Connolly
    • Journal Title

      Phys.Rev.B. 72

      Pages: 2245041-2245045

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Equilibrium Fist-Order Melting and Second-Order Glass Transitions of the Vortex Matter in Bi2Sr2CaCu2082005

    • Author(s)
      H.Beidenkopf
    • Journal Title

      Phys.Rev.Lett. 95

      Pages: 2570041-2570044

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Anisotropic Superconcucting properties of CaAlSi and CaGaSi2005

    • Author(s)
      T.Tamegai
    • Journal Title

      Int.J.Mod.Phys.B 19

      Pages: 369-374

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Vortex States in Highly Aisotropic Superconductors2005

    • Author(s)
      T.Tamegai
    • Journal Title

      9th APPC (to be published)(印刷中)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Comparative study of anisotropic superconductivity in CaAlSi and CaGaSi2005

    • Author(s)
      T.Tamegai
    • Journal Title

      Physica C. 426-431

      Pages: 208-212

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Peculiar Superconductivity in PrOs4Sb12 Probed by Local Magnetization2005

    • Author(s)
      S.Kasahara
    • Journal Title

      Physica C. 426-431

      Pages: 381-385

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Observation of Single Vortices by Magneto-optical Imaging2005

    • Author(s)
      M.Terao
    • Journal Title

      Physica C. 426-431

      Pages: 94-98

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Anisotropy Dependence of Vortex States under Tilted Fields Studied by Bitter Decorations2005

    • Author(s)
      H.Aoki
    • Journal Title

      Physica C. 426-431

      Pages: 65-68

    • Related Report
      2005 Annual Research Report

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Published: 2005-04-01   Modified: 2020-05-15  

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