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Study of Vortex Motion by Thermomagnetic Effects in High Temperature Superconductors

Research Project

Project/Area Number 07454243
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 固体物性Ⅱ(磁性・金属・低温)
Research InstitutionTohoku University

Principal Investigator

KOBAYASHI Norio  Tohoku University, Institute for Materials Research, Professor, 金属材料研究所, 教授 (40111306)

Co-Investigator(Kenkyū-buntansha) NISHIZAKI Terukazu  Tohoku University, Institute for Materials Research, Research Associate, 金属材料研究所, 助手 (90261510)
SASAKI Takako  Tohoku University, Institute for Materials Research, Research Associate, 金属材料研究所, 助手 (30178652)
Project Period (FY) 1995 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1997: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1996: ¥700,000 (Direct Cost: ¥700,000)
KeywordsHigh Tc oxide superconductor / Vortex motion / Thermomagnetic effect / Nernst effect / Mixed state / Vortex lattice melting / Disorder / 酸化物高湯超伝導体 / 酸化物高温超伝導体
Research Abstract

The aim of this project is to investigate vortex motions driven by thermomagnetic effects and to clarify the phase diagram in the vortex state in high Tc superconductors. Results are as follows. 1) Thermomagnetic effect : Ettingshausen and Nernst effects of high Tc superconductors YBa2Cu3Oy, Bi2Sr2CaCu2O8+delta and La2-xSrxCuO4 have been measured for various configurations of the magnetic field with respect to the crystal axis and the direction of the vortex motion and anisotropic properties of the vortex motion and the transport energy of the moving vortex line have been obtained. Relative magnitude of the anisotoropy are explained on the basis of the effective mass model and the quasi 2 dimensional model. However, absolute value of the transport energy is in disagreement with that expected from the type II superconducting theory and the simple flux flow model. This remains to be solved. 2) Phese diagram in the vortex state : Untwinned YBa_2Cu_3O_y single crystals have been prepared by heating twinned single crystals under an uniaxial stress. Magnetization and electrical resistance measurements on untwinned single crystals have been preformed in the magnetic fields up to 30 T using a Hall probe magnetometry. The anomalous second peak on the magnetization hysteresis curve is observed near the critical point of the first order vortex lattice melting transition. This anomalous behavior is attributed to the field-driven transition from the ordered Bragg glass to the disordered vortex glass phases. The field-driven transition is suppressed by increasing disorder introduced by electron radiation.

Report

(4 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • 1995 Annual Research Report
  • Research Products

    (109 results)

All Other

All Publications (109 results)

  • [Publications] H.Iwasaki: "Anisotropic Behavier of Superconductinty in the Y_<1-X> Pr_XBa_XCu_3Oy Films" Physica C. 244. 71-77 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Kobayashi: "Anisotropic Properties of the Anomalous Second Peak in the Magnetization Curves and the Irreversibility Field of YBa_XCu_3Oy(6.6<y<6.9)Single Crystals" Physica C. 251. 255-262 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Kobayashi: "Anisotropy of the“Second Peak"in Magnetization Curves of YBa_XCu_3Oy Single Crystals" Critical State in Superconductor. 179-182 (1995)

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      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 小林 典男: "Bi系高温超伝導体の不可逆磁場" 固体物理. 30. 469-476 (1995)

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      1997 Final Research Report Summary
  • [Publications] 小林 典男: "酸化物高温超伝導体のおける磁束ピンニング" New Superconducting Materials Forum New. 50. 19-23 (1995)

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      1997 Final Research Report Summary
  • [Publications] 小林 典男: "酸化物高温超伝導体発見からの10年 混合状態の相図と磁束構造" まてりあ. 34. 1358-1363 (1995)

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      1997 Final Research Report Summary
  • [Publications] T.Nishizaki: "Magnetization Jump and the Vortex-Lettice Melting Transition in YBa_XCu_3Oy" Phys.Rev.B. 53. 82-85 (1996)

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      「研究成果報告書概要(和文)」より
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      1997 Final Research Report Summary
  • [Publications] T.Sasaki: "Ettinghausen and Neruse Effects of QMG-YBa_XCu_3Oy in Mgnetic Fieds up to 14T" Jpn.J.Appl.Phys.35. 82-89 (1996)

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      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Noji: "Anisotropy in the Resistive Supcrconducting-Transition under Magnetic Fields in Sigle-Crystal Pb_2 Sr_2 Ho_<0.5> Ca_<0.5> Cu_<0.5> O_8" Journal of Superconductivity. 9. 65-71 (1996)

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      1997 Final Research Report Summary
  • [Publications] N.Kobayashi: "Magnetization and Flux Pinning in YBa_XCu_3Oy Single Crytals" Chinese Journal of Phys.34. 514-521 (1996)

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      「研究成果報告書概要(和文)」より
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      1997 Final Research Report Summary
  • [Publications] T.Hanaguri: "Crossever from the First-Order Vortex Phase to the Park Effect in Bi_<>Sr_<>Cu_3Oy having Different Oxygen Contents" Physica C. 256. 111-118 (1996)

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      1997 Final Research Report Summary
  • [Publications] T.Tsuboi: "High Precision Magnetization and Heat Capacity Measurements of Bi_<>Sr_<>Cu_3Oy Simgle Crytals in the Mixed State" Advances in Superconductivity VIII. 205-208 (1996)

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      「研究成果報告書概要(和文)」より
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      1997 Final Research Report Summary
  • [Publications] T.Sasaki: "Vortex Motion by the Thermal Force in YBa_XCu_3O_<7-δ>" Advances in Superconductivity VIII. 493-496 (1996)

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      「研究成果報告書概要(和文)」より
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      1997 Final Research Report Summary
  • [Publications] G.C.Han: "New Vibratin Sample Magnetometer for 31T Hybrid Magnet" Advances in Superconductivity VIII. 1237-1240 (1996)

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      1997 Final Research Report Summary
  • [Publications] H.Iwasaki: "Study of Transpport Properties in High Magnetic Fieds on the Y_<1-X> Pr_X Ba_X Cu_3 Oy Films" Sci.Rep.Res.Inst.Tohoku Univ.A. 42. 365-370 (1996)

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      1997 Final Research Report Summary
  • [Publications] T.Sasaki: "Ettings and Nernst Effects in Mixed State of YBa_X Cu_3 O_<7-δ>" Sci.Rep.Res.Inst.Tohoku Univ.A. 42. 351-358 (1996)

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    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Awaiji: "Dimensinally and Irreversibikity Field in YBa_2 Cu_3O_7 Films" Sci.Rep.Res.Inst.Tohoku Univ.A. 42. 333-338 (1996)

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      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Noji: "Irriversibility Line and Second Park in the Magnetization Curves of Pb_<>Sr_<>Y_<-X>Ca_XCu_3O_8Simgle Crystals" Physica C. 263. 442-445 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Hanaguri: "Doping Level Deperdence of Magnetization Anomalies and Heat Capacity of Bi_2Sr_2CaCu_2O_<8+δ>" Physica C. 263. 434-437 (1996)

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      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Naito: "Vortex-Lattice Melting Trausition in La_<1.85> Sr_<0.15> CuO_4 Single Crystal" Cze choslovak J. Phys.46S3. 1585-1586 (1996)

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      1997 Final Research Report Summary
  • [Publications] N.Nishizaki: "Magnetic Phase Digram and Vottex Pinning in YBa_2 Cu_3Oy Single Crystals" Czchoslovak J.Phys. 46S3. 1595-1596 (1996)

    • Description
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      1997 Final Research Report Summary
  • [Publications] G.C Han: "Magnetization Hysteresis of Quennnch-Melt-Growth Processed YBa_2 Cu_3 O_7 in High Fields up to 23 T" Physica C. 262. 292-296 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.Onodera: "Magnetization Jump due to the First-Order Vortex Lattece Melting Transition in YBa_2 Cu_3Oy Single Crystals" Physiza C. 263. 409-411 (1996)

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      1997 Final Research Report Summary
  • [Publications] S.Awaji: "High Fied Properties of Irreversivility Field and Pinning Force for YBa_2 Cu_3O_7 Films" IEEE Trans.Mag.32. 2776-2779 (1996)

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      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Koike: "Fourfokd Symmetry in the ad Plane of Upper Critica Field for Single-Crystal Pb_2 Sr_2 Y_<0.62> Ca_<0.38> Cu_3 O_8 : Evidence for dx^2-y^2 Pairing in ahigh To Superconductor" Phys.Rev.B. 54. R776-R779 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Noji: "Irreversibility Line and Second Peak in the Magnetization Curves of Pb_2 Sr_2 Y_<1-X> Ca_X Cu_3 O_8 Single Crystals." Physica C. 263. 442-445 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Nishizaki: "Anomunlous Magnetization and Dimensional Crossover of the Votey System in the Organic Superconductor K-(BEDT-TTF)_2 Cu(NCS)_2" Phys.Rer.B. 54. R3760-3763 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Kobayashi: "Thichkness Dependence of Pinning Properties in Sputtered YBa_2 Cu_3 Oy Thin Films" Proc.8th Int.Workshop on Critical Current in Supercond.179-182 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Sasaki: "Nernst effect in YBa_2 Cu_3 O_<7-δ> and Bi_<201> Sr_<1.8> Ca,Cu_2 O_<8+δ>" Proc.8th Int.Workshop on Critical Current in Supercond.299-302 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Awaji: "Irreversibility Field and Flux Pinning for YBa_2 Cu_3 O_7 Films" Proc.8th Int.Workshop on Critical Current in Supercond.183-186 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] G.C.Han: "High-Fied Studies of Peak Effect of Quench-Melt-Grpwth Processed YBa_2 Cu_3 O_7" Proc.8th Int.Workshop on Critical Current in Supercond.353-356 (1996)

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      1997 Final Research Report Summary
  • [Publications] G.C.Han: "Magnetization and Instability in Melt-Textured YBa_2 Cu_3 O_7 at Low Temperature and High Filds up to 23T" Physica C. 274. 33-38 (1997)

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      1997 Final Research Report Summary
  • [Publications] T.Nishizaki: "Dimensinal Crossver of Vartex State and Peak Effect in Magnetization in Organic Superconductors" Synthetic Metals. 85. 1497-1498 (1997)

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      1997 Final Research Report Summary
  • [Publications] M.Isa: "Superconducting and Magnetic Properties of(La,Ca)MuO_3/YBa_2 Cu_3 O_<7-δ> Multilayer Films" Physica C. 282-287. 691-692 (1997)

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      1997 Final Research Report Summary
  • [Publications] T.Sasaki: "Nernst Effect in the Mixed of YBa_2 Cu_3 O_<7-δ> and Bi_<2.1> Sr_<1.8> Ca_1 Cu_2 O_<8+δ>" Physica C. 282-287. 2009-2010 (1997)

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      1997 Final Research Report Summary
  • [Publications] T.Nishizaki: "Reentrant Peak Effect and Irreversivility Lime in Untwinned Single Crystals of YBa_2 Cu_3 Oy" Physica C. 282-287. 2117-2118 (1997)

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      1997 Final Research Report Summary
  • [Publications] T.Naito: "Preparation and Magnetic Properties of Untwinned YBa_2 Cu_3 Oy Single Crystals" Advances in Superconductivity IV. 601-604 (1997)

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      1997 Final Research Report Summary
  • [Publications] H.Iwasaki: "Superconducting Anisotropy in the Y-Based System Substituted for the Y,Ba and Cu Sites" Physica C. 290. 113-121 (1997)

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      1997 Final Research Report Summary
  • [Publications] T.Naito: "Phase Transition in Vortex-State,of Untwinned YBa_2 Cu_3 Oy_<-δ> Single Crystals at High Magnetic Fields up to 260kOe" Physica C. 293. 186-190 (1997)

    • Description
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      1997 Final Research Report Summary
  • [Publications] N.Kobayashi: "Magnetization Measurement of YBa_2 Cu_3 Oy in High Magnetic Fields up to 30T" Physica B. (印刷中).

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      1997 Final Research Report Summary
  • [Publications] N.Kobayashi: "Electrical and Magnetic Properties of La_<1-X> Ca_<1-X> MnO_3 and Pr_<1-X> Ca_X MnO_3 Thin Films" J.Mag.Mag.Mat. (印刷中).

    • Description
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      1997 Final Research Report Summary
  • [Publications] N.Kobayashi: "Phase Diagram in the Vortex State in YBa_2 Cu_3 Oy single Crystals" Advances in Superconductivity X. (印刷中).

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      1997 Final Research Report Summary
  • [Publications] P.Przyslupski: "Superconducting and Nomal State ProperTies of the YBa_2 Cu_3 O_7/Nd_<0.67> Sr_<a33> MnO_3 Heterostrutures" Advances in superconductivity X. (印刷中).

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      1997 Final Research Report Summary
  • [Publications] H.Iwasaki, O.Taniguchi, S.Kenmochi and N.Kobayashi: "Anisotropic Behavior of Superconductivity in the Y_<1-X>Pr_xBa_2Cu_3O_y Films" Physica. C 244. 71-77 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Kobayashi, K.Hirano, T.Nishizaki, H.Iwasaki, T.Sasaki, S.Awaji, K.Watanabe, H.Asaoka and H.Takei: "Anisotropic Properties of the Anomalous Second Peak in the Magnetizaion Curves and the Irreversibility Field of YBa_2Cu_3O_y (6.6<y<6.9) Single Crystals" Physica. C 251. 255-262 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Sera, M.Maki, M.Hiroi, N.Kobayashi, T.Suzuki and T.Fukase: "Thermal Conductivity and Structural Instability in La- and Cu-Site-Substituted La_2CuO_4" Phys.Rev. B 52. R735-R738 (1995)

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      1997 Final Research Report Summary
  • [Publications] T,Noji, T.Takabayashi, M.Kato, T.Nishizaki, N.Kobayashi and Y.Koike: "Carreier Dependence of Anisotropy and Irreversibility Field in Pb_2Sr_2Y_<1-x>Ca_xCu_3O_8 Single Crystals" Physica. C 225. 10-18 (1995)

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      1997 Final Research Report Summary
  • [Publications] N.Kobayashi, K.Hirano, T.Nishizaki, H.Iwasaki, S.Awaji, K.Watanabe, H.Asaoka and H.Takei: "Anisotropy of the "Second Peak" in Magnetization Curves of YBa_2Cu_3O_y Single Crystals" Critical State in Superconductors (World Scientific Singapore 1995). 179-182

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      1997 Final Research Report Summary
  • [Publications] A.Fujiwara, Y.Koike, T.Noji, Y.Saito, T.Nishizaki, N.Kobayashi, A.Yamanaka, S.Takekawa, F.Minami: "Changes of the Dimensionality and T_c through the Iodine Intercalation and Oxidation in Bi_2Sr_2CaCu_2O_<8+delta> Single Crystals" Phys.Rev.B 52. 15598-15606 (1995)

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      1997 Final Research Report Summary
  • [Publications] N.Kobayashi, T.Nishizaki, A.Kamimura, M.Isa, S.Awaji and K.Watanabe: "Thickness Dependence of Pinning Properties in Sputtered YBa_2Cu_3O_y Thin Films" Proc.8th Int.Workshop on Critical Current in Supercond. (World Scientific, Singapore 1996). 179-182

    • Description
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      1997 Final Research Report Summary
  • [Publications] T.Sasaki, K.Yamada, K.Watanabe N.Kobayashi, S.Watauchi and K.Kishio: "Nernst Effect in YBa_2Cu_3O_<7-delta> and Bi_<2.1>Sr_<1.8>Ca_1Cu_2O_<8+delta>" Proc.8th Int.Workshop on Critical Current in Supercond. (World Scientific, Singapore 1996). 299-302

    • Description
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      1997 Final Research Report Summary
  • [Publications] S.Awaji, K.Watanabe, N.Kobayashi, H.Yamane and T.Hirai: "Irreversibility Field and Flux Pinning for YBa_2Cu_3O_7 Films :" Proc.8th Int.Workshop on Critical Current in Supercond. (World Scientific, Singapore 1996). 183-186

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] G.C.Han, K.Watanabe, S.Awaji, N.Kobayashi, M.Takeo, K.Kimura and M.Hashimoto: "High-Field Studies of Peak Effect of Quench-Melt-Growth Processed YBa_2Cu_3O_7 :" Proc.8th Int.Workshop on Critical Current in Supercond. (World Scientific, Singapore 1996). 353-356

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] G.C.Han, S.Awaji, K.Watanabe, N.Kobayashi, K.Kimura and M.Hashimoto: "Magnetization Hysteresis of Quench-Melt-Growth Processed YBa_2Cu_3O_7 in High Fields up to 23 T :" Physica. C262. 292-296 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Awaji, K.Watanabe, N.Kobayashi, H.Yamane and T.Hirai: "High Field Properties of Irreversivility Field and Pinning Force for YBa_2Cu_3O_7 Film :" IEEE Trans.Mag. 32. 2776-2779 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.Koike, T.Takabayashi, T.Noji, T.Nishizaki and N.Kobayashi: "Fourfold Symmetry in the ab Plane of the Upper Critical Field for Single-Crystal Pb_2Sr_2Y_<0.62>Ca_<0.38>Cu_3O_8 : Evidence for d_x^2-_y^2 Pairing in a high-T_c Superconductor" Phys, .Rev.B 54. R776-R779 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Noji, T.Takabayashi, T.Nishizaki, N.Kobayashi and Y.Koike: "Irreversibility Line and Second Peak in the Magnetization Curves of Pb_2Sr_2Y_<1-x>Ca_xCu_3O_8 Single Crystals :" Physica. C 263. 442-445 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.Koike, A.Fujiwara, T.Kluge, T.Noji, T.Nishizaki, N.Kobayashi, A.Yamanaka, F.Minami and S.Takekawa: "Dimensionality, T_c and Cu-Site Substitution Effect of Iodine-Intercalated and Oxidized Bi_2Sr_2CaCu_2O_<8+delta> : Interpretation by the Multilayr Model :" Physica. C 263. 329-332 (1996)

    • Description
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      1997 Final Research Report Summary
  • [Publications] T.Nishizaki, T.Sasaki, T.Fukase and N.Kobayashi: "Anomalous Magnetization and Dimensional Crossover of the Vortex System in the Organic Superconductor kappa-(BEDT-TTF)_2Cu(NCS)_2 :" Phys.Rev.B 54. R3760-R3763 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Naito, T.Nishizaki, F.Matsuoka, H.Iwasaki and N.Kobayashi: "Vortex-Lattice Melting Transition in La_<1.85>Sr_<0.15>CuO_4 Single Crystal :" Czechoslovak J.Phys. 46 S3. 1585-1586 (1996)

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      「研究成果報告書概要(欧文)」より
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      1997 Final Research Report Summary
  • [Publications] T.Nishizaki, Y.Onodera, T.Naito, H.Asaoka, H.Takei and N.Kobayashi: "Magnetic Phase Diagram and Vortex Pinning in YBa_2Cu_3O_y Single Crystals :" Czechoslovak J.Phys. 46 S3. 1595-1596 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.Onodera, T.Nishizaki, H.Asaoka, H.Takei and N.Kobayashi: "Magnetization Jump due to the First-Order Vortex Lattice Melting Transition in YBa_2Cu_3O_y Single Crystals :" Physica. C 263. 409-411 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Hanaguri, T.Tsuboi, A.Maeda, T.Nishizaki, N.Kobayashi, Y.Kotaka: "J.-i.Shimoyama and K.Kishio, Doping Level Dependence of Magnetization Anomalies and Heat Capacity of Bi_2Sr_2CaCu_2O_<8+delta> in the Mixed State :" Physica. C 263. 434-437 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Noji, T.Takabayashi, T.Nishizaki, N.Kobayashi and Y.Koike: "Irreversibility Line and Second Peak in the Magnetization Curves of Pb_2Sr_2Y_<1-x>Ca_xCu_3O_8 Single Crystals :" Physica. C 263. 442-445 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] S.Awaji, K.Watanabe, N.Kobayashi, H.Yameane and T.Hirai: "Dimensionally and Irreversibility Fild in YBa_2Cu_3O_7 Films :" Sci.Rep.Res.Inst.Tohoku Univ.A 42. 333-338 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Sasaki, K.Watanabe and N.Kobayashi: "Ettingshausen and Nernst Effects in Mixed State of YBa_2Cu_3O_<7-delta> :" Sci.Rep.Res.Inst.Tohoku Univ.A 42. 531-358 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Iwasaki and N.Kobayashi: "Study of Transport Properties in High Magnetic Fields on the Y_<1-x>Pr_xBa_2Cu_3O_y Films :" Sci.Rep.Res.Inst.Tohoku Univ.A 42. 365-370 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Nishizaki, Y.Onodera, N.Kobayashi, H.Asaoka and H.Takei: "Magnetization Jump and the Vortex-Lattice Melting Transition in YBa_2Cu_3O_y :" Phys.Rev.B 53. 82-85 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Sasaki, M.Sawamura, S.Awaji, K.Watanabe, N.Kobayashi, K.Kimura, K.Miyamoto and M.Hashimoto: "Ettingshausen and Nernst Effects of QMG-YBa_2Cu_3O_<7-delta> in Magnetic Fields up to 14 T :" Jpn.J.Appl.Phys. 35. 82-89 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Noji, Y.Koike, H.Iwasaki, M.Kato, N.Kobayashi and Y.Sato: "Anisotropy in the Resistive Superconducting-Transition under Magnetic Fields in Single-Crystal Pb_2Sr_2Ho_<0.5>Ca_<0.5>Cu_3O_8 :" Journal of Superconductivity. 9. 65-71 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Kobayashi, T.Nishizaki, Y.Onodera, H.Asaoka And H.Takei: "Magnetization and Flux Pinning in YBa_2Cu_3O_y Single Crystals :" Chinese Journal of Phys.34. 514-521 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Maki, M.Sera, M.Hiroi and N.Kobayashi: "Suppression of the Superconducting Transition Temperature T_c around x * 0.115 in La_<2-x>Sr_xCuO_4 :" Phys.Rev.B 53. 11324-11327 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Hanaguri, T.Tsuboi, A.Maeda, T.Nishizaki, N.Kobayashi, Y.Kotaka, J.Shimoyama and K.Kishio: "Crossover from the First-Order Vortex Phase Transition to the Peak Effect in Bi_2Sr_2CaCu_2O_y having Different Oxygen Contents :" Pyhsica. C 256. 111-118 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Naito, T.Nishizaki and N.Kabayashi: "Phase Transition in Vortex-State of Untwinned YBa_2Cu_3O_<7-delta> Single Crystals at High Magnetic Fields up to 260 kOe :" Physica. C 293. 186-190 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] H.Iwasaki, S.Inaba, K.Sugioka, Y.Nozaki and N.Kobayashi: "Superconducting Anisotropy in the Y-Based System Substituted for the Y,Ba and Cu Sites :" Physica. C 290. 113-121 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Isa, T.Nishizaki, M.Fujiwara, T.Naito and N.Kobayashi: "Superconducting and Magnetic Properties of (La, Ca) MnO_3/YBa_2Cu_3O_<7-delta> Mulitilayr Films :" Physica. C 282-287. 691-692 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Sasaki, K.Yanada, K.Watnabe, S.Awaji, K.Kishio and N.Kobayashi: "Nernst Effect in the Mixed of YBa_2Cu_3O_<7-delta> and Bi_<2.1>Sr_<1.8>Ca_1Cu_2O_<8+delta> :" Physica. C 282-287. 2009-2010 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Nishizaki, T.Naito and N.Kobayashi: "Reentrant Peak Effect and Irreversivility Line in Untwinned Single Crystals of YBa_2Cu_3O_y :" Physica. C 282-287. 2117-2118 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] G.C.Han, K.Watanabe, S.Awaji, N.Kobayashi and K.Kimura: "Magnetization and Instability in Melt-Textured YBa_2Cu_3O_7 at Low Temperature and High Fields up to 23 T :" Physica. C 274. 33-38 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Nishizaki, T.Sasaki, T.Fukase and N.Kobayashi: "Dimensional Crossover of Vortex State and Peak Effect in Magnetization in Organic Superconductors :" Synthetic Metals. 85. 1497-1498 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Sera, M.Maki, M.Hiroi and N.Kobayashi: "Thermal Conductivity of La_<2-x-y>Nd_ySr_xCuO_4" J.Phys Soc.Jpn. 66. 765-777 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Kobayashi, T.Nishizaki, T.Naito, S.Awaji and K.Watanabe: "Magnetization Measurement of YBa_2Cu_3O_y in High Magnetic Fields up to 30 T :" Physica B. (to be published).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Kobayashi, M.Isa, T.Nishizaki and M.Fujiwara: "Electrical and Magnetic Properties of La_<1-x>Ca_xMnO_3 and Pr_<1-x>Ca_xMnO_3 Thin Films :" JMMM.(to be published).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Tsuboi, T.Hanaguri, A.Maeda, T.Nishizaki, N.Kobayashi, Y.Kotaka, J.Shimoyama and K.Kishio: High Precaution Magnetization and Hear Capacity Measurements of Bi_2Sr_2CaCu_2O_y Single Crystals in the Mixed State : Advances in Superconductivity VIII. Springer-Verlag Tokyo, 205-208 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Sasaki, J.Ikeda, K.Yamada, T.Naito, K.Watanabe and N.Kobayashi: Vortex Motion by the Thermal Force in YBa_2Cu_3O_<7-delta> : Advances in Superconductivity VIII. Springer-Verlag Tokyo, 493-496 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] G.C.Han, S.Awaji, K.Watanabe and K.Kobayashi: New Vibrating Sample Magnetometer for 31T Hybrid Magnet : Advances in Superconductivity VIII. Springer-Verlag Tokyo, 1237-1240 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Naito, T.Nishizaki, Y.Watanabe, N.Kobayashi: Preparation and Magnetic Properties of Untwinned YBa_2Cu_3O_y Single Crystals : Advences in Superconductivity IX. Springer-Verlag Tokyo, 601-604 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Kobayashi, T.Nishizaki, T.Naito, T.Sasaki, S.Awaji and K.Watanabe: Phase Diagram in the Vortex State in YBa_2Cu_3O_y Single Crystals : (to be published) in Advances in Superconductivity X. Springer-Verlag Tokyo, (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] P.Przyslupski, T.Nishizaki and N.Kobayashi: Superconducting and Normal State Properties of the YBa_2Cu_3O_7/Nd_<0.67>Sr_<0.33>MnO_3 Heterostructures : (to be published) in Advances in Superconductivity X. Springer-Verlag Tokyo, (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Naito: "Phase Transition in Vortex State of Untwinned YBa_2Cu_3O_<7-δ>-Single Crystals at High Magnetic Fields up to 260 koe" Physica C. 293. 186-190 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Isa: "Superconducting and Magnetic Properties of (La,Ca)MnO_3/YBa_2Cu_3 O_<7-δ> Multilayer Films." Physica C. 282-287. 691-692 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Sasaki: "Nernst Ellect in the Mixed Stste of YBa_2Cu_3O_<7-8> and Bi_<2.1>Sr_<1.8>Ca_1Cu_2O_<8+δ>" Pysica C. 282-287. 2009-2010 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Nishizaki: "Reentrant Peak Effect and Irreversibility Line in Untwinned Single Crustals of YBa_2Cu_3Oy" Physica C. 282-287. 2117-2118 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Naito: "Preparation and Magnetic Properties of Untwined YBa_2Cu_3Oy Single Crystals" Advances in Superconductivity. IX. 601-604 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Hiroi: "Unusual Antiferromagnetic State in Sidoped CuGeO_3 Single Crystals Studied by Specific Heat in Magnetic Fields" Phys.Rev.B. 55. R6125-R6128 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] N. Kobayashi: "Thickness Dependence of Pinning Properties in Sputtered YBa_2Cu_3O_y Thin Films" Proc. 8th Int. Workshop on Critical Current in Superconductors. 179-182 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T. Sasaki: "Nernst effect in YBa_2Cu_3O_<7-8> and Bi_2Sr_<1, y>Cu_2O_<8+>8" Proc. 8th Int. Workshop on Critical Current in Superconductors. 299-302 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] M. Sera: "Thermal Conductivity of RNI_2B_2C_2 (R=Y, HO) Singlr Crystals" Phys. Rev. B. 54. 3062-3065 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T. Nishizaki: "Anomalous Magnetization and Dimensional crossover of the Vortex System in the Organic Superconductor K-(BEDT-TTF)_2 Cu(NCS)_2" Phys. Rev. B. 54. R3760-R3763 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T. Sasaki: "Ettingshamsen and Nernst Effect in Mixed state of YBa_2 Cu_3O_<7-8>" Sci. Rep. Res. Inst. Tohoku Univ.A42. 365-370 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] N. Kobayashi: "Magnetization and Flux Pinning in YBa_2Cu_3O_y Single Crystals." Chinese Journal of Phys.34. 514-521 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] N.Kobayashi: "Anisotropic Properties of the Anomlous Second Peak in the Magnetization Curves and the Irreversibility Field of YBa_2Cu_3O_y(6.6【less than or equal】y【less than or equal】6.9) single Crystals" Physica C. 251. 255-262 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] M.Sera: "Thermal Conductivity and Structural Instabirity in La-and Cu-Site-Substituted La_2CuO_4" Phys.Rev.B. 52. R735-R738 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] N.Kobayashi: "Anisotropy of the“Second Peak"in Magnetization Curves of YBa_2Cu_3O_y Single Crystals" Critical State in Superconductors. 179-182 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小林典男: "Bi系高温超伝導体の不可逆磁場" 固体物理. 30. 469-476 (1995)

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      1995 Annual Research Report
  • [Publications] 小林典男: "酸化物高温超伝導体のおける磁束ピニング" New Superconducting Materials Forum News. 50. 19-23 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 小林典男: "酸化物高温超伝導体発見からの10年-混合状態の相図と磁束構造-" まてりあ. 34. 1358-1363 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Nishizaki: "Magnetization Jump and the Vortex-Lattice Melting Transition in YBa_2Cu_3O_y" Phys.Rev.B. 53. 82-85 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Ssaki: "Ettingshausen and Nernst Effects of QMG-YBa_2Cu_3O_<7-δ> in Magnetic Fields up to 14T" Jpn.J.Appl.Phys.35. 82-89 (1996)

    • Related Report
      1995 Annual Research Report

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Published: 1996-04-01   Modified: 2020-05-15  

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