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高温超伝導の科学・第4班(超伝導特性班)

Research Project

Project/Area Number 04240104
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Research InstitutionThe University of Tokyo

Principal Investigator

北沢 宏一  東京大学, 工学部, 教授 (90011189)

Co-Investigator(Kenkyū-buntansha) 青峰 隆文  九州大学, 理学部, 教授 (50037206)
松下 照男  九州工業大学, 情報工学部, 教授 (90038084)
長村 光造  京都大学, 工学部, 教授 (50026209)
氷上 忍  東京大学, 教養学部, 教授 (30093298)
小林 典男  東北大学, 金属材料研究所, 教授 (40111306)
Project Period (FY) 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥142,300,000 (Direct Cost: ¥142,300,000)
Fiscal Year 1994: ¥44,300,000 (Direct Cost: ¥44,300,000)
Fiscal Year 1993: ¥48,000,000 (Direct Cost: ¥48,000,000)
Fiscal Year 1992: ¥50,000,000 (Direct Cost: ¥50,000,000)
Keywords超伝導 / 臨界電流 / ピン止め / ボルテックス / 超伝導ゆらぎ / コヒーレンス長 / 臨界磁場
Research Abstract

高温超伝導体が磁場下におかれ通電された状態における、いわゆる超伝導混合状態を記述するための科学を設立する努力がなされ、以下の成果が得られた。
1.ボルテックスが単独あるいは格子状態で存在する際、高温超伝導のような積層構造でどのような運動状態を呈するかについて、GL方程式を拡張した理論が展開された。
2.高温超伝導特有の超伝導ゆらぎ現象が、電気抵抗と磁化の測定から明らかにされた。また、独特の性質として、ローレンツ力の方向に依存しないエネルギー散逸が詳細に検討された。
3.高温超伝導の磁場-温度に対する相図が作成された。その特徴は従来の上部臨界磁場線が消失し、幅広い超伝導遷移領域が現れることで、物質により大きな差がある。また、不可逆線が現れ、その内部でコヒーレントな状態が出現する。この状態、従来は見られなかった、ボルテックス構造の2次元-3次元転移が生じる。
4.高温超伝導におけるフラックスクリープは、従来超伝導体よりも激しく、その機構は異なっている。精密な測定がなされ、ピンポテンシャルの電流密度依存性などの観点から論じられた。
5.新たな、より高性能の超伝導体を開発する努力がなされ、ピン止め中心を導入する試みとその特性検討がなされた。また、水銀系での新たな組成が見い出され、実用に向けて有望な材料として提示された。ピン止め力を制御する因子が異方性を通して解明され、その化学的改質の指針が得られた。
6.高温超電導体にとって最大の特徴であり、かつ、種々の課題を生みだすもととなっている異方性について詳細な測定が行われ、モデル化がなされた。

Report

(3 results)
  • 1994 Annual Research Report
  • 1993 Annual Research Report
  • 1992 Annual Research Report
  • Research Products

    (93 results)

All Other

All Publications (93 results)

  • [Publications] T.Hasegawa, M.Nantoh, et al.: "Atomic Site Tunneling Spectroscopy on High-Tc Superconductors" Physica B. 197. 617-623 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Y.Tomioka, M.Nantoh, et al.: "The Meissner and Shielding Effects of High-Temperature Oxide Superconductors" Physica C. 223. 347-360 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] M.Nantoh, T.Hasegawa. et al.: "Cryogenic STM/STS Observation on Oxide Superconductors" J.Superconductivity. 7(2). 349-353 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] N.Kobayashi, K.Egawa, et al.: "Fluctuation Effedts in Specific Heat and Magnetization of c-Axis Aligned(Bi,Pb)_2Sr_2Ca_2Cu_3O_X" Physica C. 219. 265-272 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] S.Kenmochi, H.Iwasaki, and N.Kobayashi: "On Suppression of Superconductivity in the Y_<1-x>Pr_xBa_2Cu_3O_y System" Physica B. 194-196. 2115-2116 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] H.Iwasaki, O.Taniguchi, et al.: "Resistive Superconducting Transition of Y_<1-x>Pr_xBa_2Cu_3O_y Films in Magnetic Field" Physica B. 194-196. 2117-2118 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Matsuzaki, A.Inoue, and T.Masumoto: "Oriented Structure and Superconducting Properties in Dense Y_1Ba_2Cu_3 Oxides Prepared by Press Forging" Jpn.J.Appl.Phys.31. L1789-1792 (1992)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Matsuzaki, K.Shimizu, et al.: "Layered Structure and Superconducting Properties of Ag-Sheathed Bi_<1.84>Pb_<0.34>Sr_2Ca_2Cu_3O_y Wire Prepared by Combined Jellyroll and Hotextrusion Technique" Jpn.J.Appl.Phys.33. 1308-1311 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Watanabe, S.Awaji, et al.: "Characteristics of High Temperature Operation in a Conduction Cooled (Nb,Ti)_3Sn Superconducting Magnet" Adv.Cryo.Eng.40. 847-852 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Y.Takane and H.Ebisawa: "Numerical Study on the Conductance of Normal-Superconductor Contacts" Physica B. 194-496. 481-182 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Tanaka, Y.Takane, et al.: "Application of Cluster Variation Method to Three-Dimensional t-J Model" J.Phys.Soc.Jpn.63. 2909-2918 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Tanaka, H.Ebisawa, and T.Morita: "Cluster Variation Method for Two-Dimensional Hubbard and t-J Models" Physica C. 235-240. 2187-2188 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Tamegai, Y.Iye, et al.: "Anormalous Peak Effect in Single Crystal Bi_2Sr_2CaCu_2O_<8+y> Studied by Hall Probe Magnetomertry" Physica C. 213. 33-42 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] M.Hasegawa, Y.Matsushita, et al.: "Crystal Growth and Resistive Upper Critical Field in Tl_2Ba_2CuO_y and Tl_2Ba_2CaCu_2O_y" Proc.M^2S-HTSC Grenoble. (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] M.Hasegawa, Y.Matsushita, et al.: "Growth and Anisotropic Superconducting Properties of Tl_2Ba_2CuO_y and Tl_2Ba_2CaCu_2O_y Single Crystals" Physica C. 231. 161-166 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Kishio, D.Pooke, et al.: "Crystal Structure and Anisotropy of Iodine-Intercalated Bi_2Sr_2Ca_<n-1>Cu_nO_x" J.Superconductivity. 7(1). 117-121 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] D.Pooke, T.Stoto, et al.: "Magnetic and HRTEM Studies of Iodien Intercalated Bi_2Sr_2CaCu_2O_x" OPhysica C. 235-240. 2725-2726 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] S.Hahakura, J.Shimoyama, et al.: "New Barium-free Mercury-based High-Tc Superconductors:(Hg,Mo)Sr_2(Ca,Y)_<n-1>Cu_nO_y and HgSr_2(Ca,Y)_<n->(Cu,Re)_nO_y(n=1 and 2)" Physica C. 233. 1-7 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] S.Hikami, M.Shirai, and F.Wegner: "Anderson Localization in the Lowest Landau Level for a Two-Subband Model" Nucl.Phys.B408. 415-426 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] S.Hikami: "Finite N Analysis of Matrix Models for an n-Ising Spin on a Random Surface" Physica A. 204. 290-305 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] S.Hikami: "Renormalized Expansions for Matric Models" Prog.Theor.Phys.92. 479-499 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Osamura, T.Kizu, and T.Oku: "Critical Current Density in YBa_2Cu_3O_<6+x> Added with Perovskite Type Impurity" Physica C. 226. 113-120 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Osamura, T.Kizu, and T.Oku: "Flux Pinning by Perovskite Type Impurity in YBa_2Cu_3O_<6+x>" Adv.in Cryog.Eng.40. 71-78 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Osamura, M.Kamo, et al.: "Influence of Sausaging Effect on V-1 Characteristics of Ag Sheathed Bi2223 Tapes" Cryogenics. 34. 303-308 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Y.Horie, T.Hamamoto, et al.: "Ultrasonic Studies of Crystal Structure Dependence of Flux Pinning in Bi_2Sr_2Ca_<n-1>Cu_nO_y(n=1,2 and 3)" Physica B. 194-196. 1581-1582 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Aomine, T.Nishizaki, et al.: "Temperature and Magnetic Field-Direction Dependence of Transport Critical Currents in Single-Crystalline Thin Films of YBa_2Cu_3O_<7-δ>" Physica B. 194-196. 1613-1614 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Fukami, D.Lee, et al.: "Magnetic Field-Direction Dependence of Criticl Current Density in c-axis Oriented Bi_2Sr_<1.7>La_<0.3>CuO_<6+v> Films" Physica B. 194-196. 1835-1836 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Matsushita, E.S.Otabe, et al.: "Anisotropy of Irreversibility Line in a Superconducting Bi-2223 Tape Wire" Adv. Cryo. Engng.40. 33-40 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Matsushita: "Elastic Moduli of Fluxoid Lattice in Tape-II Superconductors, Local or Nonlocal" Physica C. 220. 172-180 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Matsushita: "Flux Bundle Size in Weakly Pinned Superconductors" Adv.in Superconductivity. VI. 503-506 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Yokota, T.Takahashi, et al.: "Anomalous Band-folding Due to The BiO Superstructure in Bi_2Sr_2CaCu_2O_8 Studied by Angle-Resolved Photoemission" Phys.Rev.B50. 10225 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Kadowaki, T.Mochiku, et al.: "Non-Linear Transport Phenomena along The c-Axis in Single Crystalline Bi_2Sr_2CaCu_2O_<8+δ>" Physica C. 235-240. 3275-3276 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Matsuzaki, A.Inoue, and T.Masumoto: "High Temperature Superconducting Electronics" オーム社, 11 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] S.Awaji, K.Watanabe, et al.: "Adv.in Superconductivity VI" Springer-Verlag, 4 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Watanabe, S.Awaji, et al.: "Critical Currents in Superconductors" World Scientific, 6 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Kadowaki, S.L.Yuan, and K.Kitazawa: "Superconductor Sci.and Technol." IOP, 22 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] H.Ikuta: "Giant Magnetostriction in Bi_2Sr_2CaCu_2O_8 Single Crystal in the Superconducti g State and Its Mechanism" Phy.Rev.Lett.70. 2166-2169 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Y.Tomioka: "The Meissner and shielding effects in niobium in relation to oxide superconductors" Physica C. 215. 297-304 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] T.Hasegawa: "Scanning Tunneling Spectroscopy on High T_c Superconductors" J.Phys.Chem.Solids. 54. 1351-1357 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] H.Iwasaki: "Anomalous magnetoresistance in the normal state of Y_<1-x>Pr_xBa_2Cu_3O_y(x>0.6)films" Physica C. 204. 406-412 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] S.Awaji: "Dimensional crossover effect of pinning in YBa_2Cu_3O_7 films" Jpn.J.Appl.Phys.32. L1795-L1797 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Watanabe: "Irreversibility line and flux pinning in High T_c YBa_2Cu_3O_7 Superconductivity" Advances in Superconductivity. 5. 459-462 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Watanabe: "Anisotropy and dimensional characteristics in CVD route YBa_2Cu_3O_<7-y>" Materials Science Forrum. 137-139. 277-288 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] N.Kobayashi: "Fluctuation effects in specific heat and magnetization of C-axis alligned(Bi,Pb)_2Sr_2Ca_2Cu_3O_x" Physica C. 219. 265-272 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Matsuzaki: "Layered structure and superconducting properties of Ag-sheathed Bi_<1.84>Pb_<0.34>Sr_2Ca_2Cu_3O_y wires prepared by a combined jellyroll and hot extrusion technique" Jpn.J.Appl.Phys.64. (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] Yoshitake: "Numerical Study on the Conductance of Normal-Superconductor Contacts" J.Phys.Soc.Jpn.62. 1844-1847 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Tanaka: "Three-dimensional t-J model and cluster variation method" Physica B. (印刷中).

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Kishio: "Crystal Structure and Anisotropy of Iodine-Intercalated Bi_2Sr_2Ca_<n-1>Cu_nO_y" J.Superconductivity. 7. 117-121 (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] M.Okuya: "Single Crystal Growth and Anisotropic Electrical Properties of(La_<1-x>Ca_x)_2CaCu_2O_6" J.Superconductivity. 7. 313-318 (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] J.Shimoyama: "New Mercury-based Superconductor;(Hg,Cr)Sr_2CuO_y" Physica C. (印刷中).

    • Related Report
      1993 Annual Research Report
  • [Publications] A.G.Aronov: "Gauge invariance and transport properties in superconductors above T_c" Phys.Rev.B. (in press). (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] S.Ochiai: "Improvement of strain dependence of critical current of Ag/Bi2223 tapes by reducing oxide core fraction" Cryogenics. 33. 976-979 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Osamura: "Phase diagram of Ln-Ba-Cu-O system(Ln=Lanthanide)" Z.Metallkde. 84. 532-538 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Osamura: "Influence of Ag addition on J_c and mechanical properties of Ag/Bi2223 tapes" Advances in Superconductivity. 5. 689-692 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] S.Ochiai: "Estimation of strength distribution of Nb_3Sn in multifilamentary composite wire" J.Appl.Phys.74. 440-445 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] R.Ikeda: "Implications of Fluctuation Effects on Thermodynamic Quantities in Type II Superconductors" Physica B.

    • Related Report
      1993 Annual Research Report
  • [Publications] X.G.Qiu: "Thermally activated flux dissipation in c-axis-oriented YBa_2Cu_3O_7/PrBa_2Cu_3O_7 multilayers" Phys.Rev.B. 47. 14519-14524 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] C.PanagopoulosT.FukamiT.Matsushita: "The effects of gaseous helium and nitrogen to the thermopower measurements:A note of concern for the discrepancy of the results observed in high temperature superconductorsMagnetic field-direction dependence of critical current density in c-axis oriented Bi_2Sr_<1.7>La_<0.3>CuO_<6+y> filmsEffect of Coherence Length in the C-axis on Irreversibility Properties in Anisotropic High Temperature Superconductors" Jpn.J.Appl.Phys.Physica CAdvances in Superconductivity. 32215V. 4684-4689375-381455-458 (199319931993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Matsuzaki: "High Temperature Superconducting Electronics(Microstructure and superconducting properties on hot extruded Tl- and Bi-based oxide)" OHMsha, 11 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Watanabe: "Advances in High-T_c Superconductors(editted by J.J.Pouch,S.A.Alterovitz and R.R.Romanofsky)(Anisotropy and Dimensional Characteristic in CVD Route Y_1Ba_2Cu_3O_<7-d>)" Trans Tech Publications,Aedermannsdorf,Switzerland, 797 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Kitazawa: "Studies on Anisotropy of Oxide Superconductors by STM/STS and Magnetization Measurements" JJAP Series. 7. 253-259 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Hasegawa: "Atomic Site Tunneling Spectroscopy on Oxide Superconductors" J.Phys.Chem.Solids. 53. 1643-1650 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] J.Li: "Growth and Properties of Pure C_<60> Single Crystals from Vapor" Physica. C195. 205-208 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] N.Kobayashi: "Study of Resistive Superconducting Transition in YBa_2 Cu_3 O_7 Films" Sci.Rep.Res.Inst.Tohoku Univ.A. 37. 143-150 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] K.Watanabe: "Polycrystalline Y_1 Ba_2 Cu_3 O_<7-> Films Prepared by CVD Method" Advances in Cryogenic Engineering(Materials). 38. 991-996 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] S.Awaji: "Dimensional Crossover Effect in J_C Characteristics of Chemical Vapor Deposition Processed YBa_2 Cu_3 O_<7-> Films" Jpn.J.Appl.Phys.31. 1532-1535 (1992)

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      1992 Annual Research Report
  • [Publications] K.Matsuzaki: "High-Tc superconducting properties and structure of T1-Ba-Ca-Cu oxide wires produced through hot extrusion" Material Letters. 13. 368-372 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Y.Takane: "Conductance Formula for Mesoscopic Systems with a Superconducting Segment" J.Phys.Soc.Jpn.61. 1685-1690 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Y.Takane: "Conductance and Its Fluctuations of Mesoscopic Wires in Contact with a Superconductor" J.Phys.Soc.Japan. 61. 2858-2864 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Y.Takane: "Conductance of Normal-Superconductor Contacts Due to the Andreev Reflection" J.Phys.Soc.Jpn.61. 3466-3469 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] K.Kishio: "Anisotropic Magnetization,Flux Pinning and Critical Current Density of La-Sr-Cu-O Single Crystal" Supercond.Sci.Technol.5(1S). S69-S72 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Kimura: "Compositional Dependence of Transport Anisotropy in Large(La,Sr)_2 CuO_4 Single Crystals and Second Peak in Magnetization Curves" Physica. C192. 247-252 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] N.Chikumoto: "Temperature Dependence of the Lower Critical Field under the Effect of Surface Barriers in Bi_2 Sr_2 CaCu_2 O_8 Crystal" Physica. C199. 32-36 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Matsuda: "Superconduting Fluctuation in the Hall Conductivity:An Estimation of Skew-Scattering Life Time in YBa_2 Cu_3 O_<7->" Physical Review. B45. 4901-4906 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Y.Iye: "Anisotropy of Bi_2 Sr_2 CaCu_2 O_<8+y> Revisited" Physica. C199. 154-160 (1992)

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      1992 Annual Research Report
  • [Publications] Y.Iye: "How Anisotropic Are the Layered Cuprate High Tc Superconductors?" Mat.Phys.16. 89-111 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Y.Iye: "Doping-,Pressure and Temperature-Depencences of the Hall Coefficients in High Tc Cuprates" Phys.Chem.Solids. 53. 1561-1568 (1992)

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      1992 Annual Research Report
  • [Publications] K.Osamura: "Work Instability and its Influence to Critical Current Density of Ag Sheathed Bi2223 Tapes" Superconductor Sci.Technol.5. 1-6 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] K.Osamura: "Microstructure Control and Critical Current Density of Ag Sheathed Bi2223 Tapes" Adv.in Superconductivity. 4. 565-568 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] W.Zhang: "Phase Equilibria at Low Oxygen Partial Pressuer in Y-Ba-Cu-O System" Physica C. 190. 396-402 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] K.Osamura: "Fracture Behavior and Critical Current Density of Ag Sheathed High T_C Superconducting Tapes" Adv.in Cryo.Eng.38. 875-881 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Fukami: "Critical Current and Activation Energy Due to Two Dimensional Layered Structure in Ba_2 Sr_2 CaCu_2 O_<8+y> Film" Helvetica Physica Acta. 65. 115-116 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Fukami: "Preparation of (Bi_<1-X>Pb_X)_2 Sr_2 Ca_2 Cu_3 O_<10> Films by RF-Sputtering with Compound Powder Target of Stoichiometric Composition" Helvetica Physica Acta. 65. 117-118 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Matsusita: "Effect of Coherence Lingth in the C-Axis on Irreversibility Properties in Anisotropic High Temperature Superconductors" Adv.Superconductivity. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Matsusita: "Flux Creep in the Vicinity of Irreversibility Lines" Adv.Superconductivity. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Matsusita: "Effect of Short Coherence Length along the C-Axis on Irreversibility Line in High T_C Superconductors" Physica C. (1993)

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      1992 Annual Research Report
  • [Publications] H.Obara: "Zero-Field-Cooled,Field-Cooled and Remanent Magnetization of Epitaxial YBCO Films" ¨Advanced in Superconductivity ¨Springer-Verlag Tokyo. 759-762 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] A.Sawa: "Role of Ozone in the Oxidation of YBCO Thin Films'" ¨Advanced in Superconductivity ¨Spreinger-Verlag Tokyo. 659-662 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] M.Suzuki: "Thermally Activated Resistive Behavior and Flux Motion in La_<2-X> Sr_X CuO_4 Single-Crystal Thin Films" Phys.Rev.B. 46. 14230-14233 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] M.Suzuki: "Fluctuation Conductivity and Normal Resistivity in La_<2-X> Sr_X CuO_4 as a Function of Doping" Phys.Rev.B. 47. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] M.Murakami: "Flux Pinning by Non-Superconducting Inclusions in Melt-Processed YBaCuO Superconductors" Cryogenics. 32. 930-935 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 小原 春彦: "酸化物超電導薄膜の磁化特性" 電子技術総合研究所, 120 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] M.Murakami: "Melt Processed High-Temperature Superconductors" World Scientific, 361 (1993)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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