N. Koshizuka S. Tajima (Eds.)

Advances inSuperconductivity XIProceedings of the 11th International Symposium onSuperconductivity (ISS '98), November 16-19,1998, Fukuoka

Volume 1

ISTEC

With 565 Figures

Springer

Contents of Volume 1* Invited papers

Foreword VPreface VIOrganization of ISS '98 VII

1 Plenary Lectures

Trend of Science in the 21st CenturyF. YONEZAWA 3

*Application of High-Temperature SQUID Magnetometers to NondestructiveEvaluation and Geomagnetic Exploration

A.I. BRAGINSKI 9

A Clinical Application of Superconductivity Technology — The Measurement ofMagnetic Fields Produced by the Human Body —

M. KOTANI 25

The Effect of Chemical Pressure on T, of Layered Cuprate SuperconductorsM. MAREZIO, F. LICCI, A. GAUZZI 31

Critical Currents in Neutron-Irradiated High Temperature SuperconductorsH.W.WEBER 37

Review of Coated Conductor Superconductor Wire Scale-Up Research in the U.S.R.H. HAMMOND 43

Challenges in the Realization of SFQ Digital CircuitsT. VanDuzER 49

2 Physics

2.1 Normal State Properties

Pressure Effects on Transport Properties of Detwinned Single Crystal YBa2Cu3O7 5

K. YOSHIDA, A.I. RYKOV, I. TERASAKI, S. TAJIMA 57

Cu NMR Study of HgBa2Cu04+s and ^Y. ITOH, T. MACHI, S. ADACHI, A. TOKIWA-YAMAMOTO, K. TANABE, N. KOSHIZUKA .. 61

XI

XII

Photoinduced Phase Transition in YBa2Cu3Ox Observed by in-situ Resonant Raman

Spectroscopy

M. OSADA, M. KAKIHANA, J. BACKSTROM, M. KALL, L. BORJESSON 65

Electronic State of CuO

X.G. ZHENG, N. TSUTSUMI, S. TANAKA, M. SUZUKI, C.N. XU 69

Out-of-Plane Transport Properties of Zn-Substituted Bi-2212 Single Crystals with

Different Oxygen Content

H. KOUNO, H. IKEDA, R. YOSHIZAKI 73

Separation of Electronic and Phononic Components in Raman Spectra of High-T.

Superconductors

A.G. PANFILOV, S. TAJIMA, A. YAMANAKA 77

Electric Resistivity of PrBa2Cu3O7 x Poly crystals

T. MINAWA, A. IYO, H. KAWANAKA, Z. ZOU, H. BANDO, Y. NISHIHARA 81

Single Crystal Growth and Magnetic Properties of (La,Nd)4Ba2Cu2O10

H. NOZAKI, Y. YAMADA, H. IKUTA, I. HIRABAYASHI, U. MIZUTANI 85

Growth and the Transport Property of Single Crystal PrBa2Cu40g

S. HORII, Y. YAMADA, H. IKUTA, I. HIRABAYASHI, U. MIZUTANI 89

Femtosecond Optical Pulse Response of Yo 7PrQ 3Ba2Cu3O7 g Thin Films

S. NASHIMA, M. TONOUCHI, M. HANGYO, K.-U. BARHOLZ, P. SEIDEL 93

Anisotropic Transport Properties of Pb-Doped Bi2212 Single Crystals

T. MOTOHASHI, H. KOBAYASHI, Y. NAKAYAMA, T. FUJITA, K. OTZSCHI, J. SHIMOYAMA,

K. KlTAZAWA, K. KlSHIO 97

Effects of Oxygen Deficiency on ESR of Mn2+ Ions Substituted in YBa2Cu307 6

Superconductors

C. TAKA, A. NISHIDA, K. HORAI 101

Measurements of Hall Effect on Bi2212 Under Uniaxial Stress

N. WATANABE, T. NAKAJIMA, K. TSUSHIMA 105

ESR of Host Magnetic Ions or Impurity Ions in La2 xGdxCuO4 (0 x 2) as a Probe

of Magnetic Interaction Between Magnetic Ions

K. SUGAWARA, J. TAKAI, N. ARAI, K. YAMAMOTO, K. HOTTA, H. HIROSE 109

Resistive Transition in Bi2Sr2CaCu2Ox Single Crystals Measured Using Uniform

and Non-Uniform Current Distributions

K. NAKAO, J.G. WEN, N. KOSHIZUKA 113

Transport Properties of Grain Boundary Junctions Fabricated from Hole and

Electron Doped High-T, Superconductors

U. SCHOOP, S. KLEEFISCH, S. MEYER, A. MARX, M. NAITO, H. SATO, L. ALFF,

R. GROSS 117

Microwave and Millimeter-Wave Conductivity of Sr]4Cu24O41

R. INOUE, H. KITANO, T. HANAGURI, A. MAEDA, N. MOTOYAMA, T. OSAFUNE,

M. TAKABA, H. EISAKJ, S. UCHIDA 121

XIII

Film-Thickness Dependence of Anomalous Dielectric Property Found in C-Axis-

Oriented La2 xSrxCuO4 Film with Localization

M. SUGAHARA, S. MlTANI, H. KANEDA 125

Ion Milling of YBa2Cu307 5 Thin Films and Their Characterization

S. NASHIMA, M. KAWAMURA, S. SHIKII, M. TONOUCHI, M. HANGYO 129

2.2 Superconducting State Properties

Low Temperature Penetration Depth Measurements in High-7 Superconductors

C. PANAGOPOULOS, T. XIANG, J.R. COOPER, J.L. TALLON 133

Magnetic Imaging of Interlayer Josephson Vortices

J.R. KlRTLEY, K.A. MOLER, J.A. ScHLUETER, J .M. WILLIAMS, D.G. HlNKS,

T.W. Li, G. VILLARD, A. MAIGNAN 139

STM Vortex Core Spectroscopy and Non-BCS Pairing in High Temperature

Superconductors

C. RENNER, B. REVAZ, K. KADOWAKI, I. MAGGIO-APRILE, A. ERB, E. WALKER,

0 . FISCHER 145

Pseudogap Probed by STM

A. MATSUDA, S. SUGITA, T. WATANABE 151

Superconducting Gap and Pseudogap Behavior in High-Tc Cuprates

M. ODA, H. ISHIGURO, R.M. DIPASUPIL, N. MOMONO, T. NAKANO, M. IDO 157

Coulomb Blockade of the Intrinsic Josephson Tunneling in Submicron BSCCO

Stacks

Y.I. LATYSHEV, S.J. KIM, T. YAMASHITA 161

Tunneling Study of Oxygen Concentration Dependence of Electronic State in

Bi2Sr2CaCu208x

A. SUZUKI, M. SUZUKI, M. KUNO, Y. ASO, X.G. ZHENG, S. TANAKA 165

Magnetic-Field Dependence of the Energy Gap in Bi2Sr2Cu06+6

T. EKINO, Y. SEZAKI, H. FUJII 169

Anomalous Temperature Dependence of the London Penetration Depth in Hole

Doped High-F. Superconductors

S. MEYER, S. KLEEFISCH, A. MARX, M. ZITTARTZ, L. ALFF, R. GROSS 173

Break-Junction Measurements of the Energy Gap Above Tc in Bi2Sr2CaCu20gt5

T. EKINO, Y. SEZAKI, H. FUJII 177

Quantum Interference Found in //c Conductance Modulation of La2 xSrxCuO4

Thin Film in CO2 Laser Irradiation

M. SUGAHARA, T. KABASAWA, T. NAGASAWA, Y. UEDA, R. SHIMODA, H. KANEDA .... 181

The r=0 Phase Diagram of the Field-Driven Superconductor-Insulator Transition

in2D

S. OKUMA, S. SHINOZAKI, N. KOKUBO 185

XIV

Evaluation of Supercurrent Distribution by Terahertz Radiation MappingM. YAMASHITA, S. SHIKII, T. KONDO, T. KIWA, M. TONOUCHI, M. HANGYO 189

2.3 Vortex and Critical Current

*ac Charge Dynamics in the Meissner State and the Vortex State of Bi2Sr2CaCu,OA. MAEDA, T. HANAGURI, H. KITANO 193

Magnetic Flux Generation in YBCO Thin Film Loops by Optical ExcitationUnder Magnetic Field

H. SAIJO, M. YAMASHITA, T. KIWA, T. KONDO, O. MORIKAWA, M. TONOUCHI,

M. HANGYO 199

The Vortex-Glass Transition and Phase Diagram in Low-7, SuperconductorsS. OKUMA, M. ARAI, N. KOKUBO 203

Anomalous Peak Effect and Current-Driven Flux Lines in IrradiatedBi2Sr2CaCu20g+g: A Computer Simulation Study

R. SUGANO, T. ONOGI, K. HIRATA, M. TACHIKI 207

Estimation of Current Distribution in a Type II SuperconductorB. HADANO, O. ICHIMARU, E. KUSAYANAGI 211

Controllability and Stability of Magnetic Flux in YBCO Thin Film Loop Trappedby Optically Induced Current Imbalance

K. SHIKITA, M. YAMASHITA, T. KIWA, O. MORIKAWA, M. TONOUCHI, M. HANGYO .... 215

Magnetic Flux Trap in Ion Implanted YBCO Thin Films Diagnosed by TerahertzMapping

T. KIWA, M. YAMASHITA, O. MORIKAWA, T. NAKAMURA, M. TONOUCHI, M. HANGYO 219

Vortex Distribution Observed by Hall-Probe Array for Overdoped Bi-2212 CrystalY. YAMAGUCHI, G. RAJARAM, N. SHIRAKAWA, H. OBARA, T. NAKAGAWA,

A. MUMTAZ, H. BANDO 223

A NMR Study of Vortex Melting in YBa2Cu4O8

T. MACHI, N. KOSHIZUKA, H. YASUOKA 227

Magnetic Field Dependence of Jc in NdBa2Cu3O7 g Single Crystals Grown UnderVarious O2 Partial Pressures

S. SHIBATA, A.K. PRADHAN, T. MATSUSHIMA, H. UNOKI, N. KOSHIZUKA 231

Fast Magnetic Relaxation Close to T. in YBCOI. ISAAC, J.A. JUNG 235

Observation of the First-Order Vortex Lattice Melting in NdBafluQ Single CrystalsA.K. PRADHAN, S. SHIBATA, K. NAKAO, N. KOSHIZUKA 239

Magnetic Properties of (Nd033Eu033Gd033)Ba2Cu3Oy Doped by Additional Gd-211Particles

M. JIRSA, M.R. KOBUSCHKA, M. MURALIDHAR, A. DAS, M. MURAKAMI 243

Field-Cooled Flux Distributions as Tool to Analyze Pinning PropertiesM.R. KOBUSCHKA, A. DAS, M. MURALIDHAR, N. SAKAI, M. MURAKAMI 247

XV

Superconducting Transitions of Bulk 123 Superconductors in Fields Up to 7 T

M.R. KOBLISCHKA, M. MURALIDHAR, T. HIGUCHI, K. WAKI, T. MOCHIDA,

N. CHIKUMOTO, M. MURAKAMI 251

Pinning in Nd-Based 123-Superconductors

M.R. KOBLISCHKA, M. JIRSA, M. MURALIDHAR, T. HIGUCHI, M. MURAKAMI 255

Distribution of Electric Field and Charge in Superconducting Strips Induced by

Hall Effects

Y. MAWATARI 259

Effect of Parallel Magnetic Field on the Melting Transition in BSCCO

S. NAKAHARAI, T. ISHIGURO, S. WATAUCHI, J. SHIMOYAMA, K. KISHIO 263

Effect of Ca Doping on the Lower Critical Field of YBa,Cu3O7 d Single Crystals

S. TOCHIHARA, M. MASHINO, H. YASUOKA, H. MAZAKI, M. OSADA,

M. KAKIHANA 267

Complex Harmonic Susceptibilities of Bi2Sr2Ca2Cu3O with Different Critical-

Current Density

M. MASHINO, H. YASUOKA, H. MIYAIRI, H. NAKANE, S. HASEYAMA 271

The LPE Growth of Iron Garnet Films for Magnetic Flux Density Observation

N. ADACHI, N. NISHIOKA, T. HIBI, T. OKUDA, T. MACHI, T. TAKAGI,

N. KOSHIZUKA 275

Current Dependence of the Effective Pinning Potential in Grain Aligned High-Tc

Superconductors

I. ISAAC, H. OHSAKI, J.A. JUNG 279

Pinning Mechanism in Weakly Pinned Type II Superconductors

M. YOSHIHARA, E. KUSAYANAGI 283

Recoupling Vortices due to Columnar Defects in 3.5 GeV Xe-Irradiated QMG-

YBCO

S. OKAYASU, N. KURODA, A. IWASE, T. KAMBARA 287

Vortex State of Heavy Ion Irradiated Ni-Doped Bi-2212

H. IKEDA, N. KURODA, A. IWASE, T. KAMBARA, R. YOSHIZAKI 291

Dynamical Properties of Vortices in the Mixed State of Amorphous MojSi1 x Films

N. KOKUBO, S. OKUMA 295

The Thermally Nucleated Dissipation Process in Zero Field Studied by Voltage Noise

N. KOKUBO, M. MUTO, S. OKUMA 299

Magnetic Relaxation Properties in OCMG Processed Nd-Ba-Cu-0 Bulk

Superconductors

T. MOCHIDA, H.S. CHAUHAN, N. SAKAI, N. CHIKUMOTO, M. MURAKAMI 303

Anisotropy of Underdoped YBa,Cu3O65 Single Crystal

T. ISHIDA, K. KTTAMURA, K. OKUDA, A.I. RYKOV, S. TAJIMA 307

ac Susceptibility and ac Loss of Silver-Sheathed Bi-2223 Tapes

N. SAVVIDES, K.-H. MOLLER 311

XVI

Transport Current Distribution in Superconducting TapesJ. HERRMANN, N. SAVVIDES, K.-H. MULLER 315

Connectivity and Limitation of Current in Bi-2223/Ag TapesK.-H. MULLER, C. ANDRIKIDIS, N. SAVVIDES, J. Du, K.E. LESLIE, C.P. FOLEY 319

2.4 Theories

New Concept on Superconductor — Flux Electron —T. OHNUMA 323

Gap-Related Structure in a Phonon Spectrum of CuxBa2Ca3Cu4Oy

Y. TANAKA, K. TOKIWA, A. IYO, T. ITOH, H. IHARA, S.K. AGARWAL 327

Impurity Effects on the Superconducting State with a Nodeless Gap in the t-J ModelH. TSUCHIURA, Y. TANAKA, M. OGATA, S. KASHIWAYA 331

Theory of Tunneling Effect in Ferromagnetic Metal/Insulator/Triplet SuperconductorJunctions

N. YOSHIDA, Y. TANAKA, M. YAMASHIRO, S. KASHIWAYA 335

ac Josephson Current in d-Wave Superconductor JunctionsN. YOSHIDA, Y. TANAKA, S. KASHIWAYA 339

Superconducting Condensation Energy of the Two-Dimensional Hubbard ModelObtained by the Variational Monte Carlo Study

K. YAMAJI, T. YANAGISAWA, S. KOIKE 343

Superconducting States with a Nodeless Gap in the t-t'-J-J' ModelH. TSUCHIURA, Y. TANAKA, M. OGATA, S. KASHIWAYA 347

3 Chemistry

3.1 New Materials and New Superconductors

*Superconductivity in Electron-Doped Layered Metal NitridesS. YAMANAKA, K. HOTEHAMA, H. KAWAJI 353

Superconductivity in the K-Bi-O SystemN.R. KHASANOVA, A. YAMAMOTO, F. IZUMI, T. KAMIYAMA, X.J. WU, K. YOSHIDA,

S. TAJIMA 359

Synthesis and Magnetic Properties of Cu2GeO4 Containing Edge-Sharing CuO2

ChainsT. YAMADA, Z. HIROI, M. TAKANO, M. NOHARA, H. TAKAGI 363

Investigation of an Unstable T. 126K Phase and Its Derivative Phase in theBa-Ca-Cu-0 System

T. HOSOMI, H. SUEMATSU, H. FJELLVAG, Y. MATSUI, Y. TOMOKIYO, M. KARPPINEN,

H. YAMAUCHI 367

High-Pressure Synthesis of Ba2Can ,Cun02n(O,F)2 (n=2~5) with the Highest r of120K(n=3)

A. IYO, M. TOKUMOTO, H. IHARA 371

XVII

New V-Based Superconductors (Cu,V)Sr2Can ,CunOy (n=3-7) Synthesized Under

High Pressure

N. ZHIGADLO, E. TAKAYAMA-MUROMACHI 375

Superconductivity and Crystal Structure of LaBaCuO2BO3 Compound

Z. Zou, J. YE, H. KAWANAKA, T. MINAWA, H. BANDO, Y. NISHIHARA 379

3.2 Crystallinity, Oxygen Content, and Carrier Doping

Low Temperature Structural Studies of Mercury Cuprates Superconductors

F. Due, P. BORDET 383

Application of Convergent-Beam-Electron-Diffraction Technique to Determine

Novel Cuprate Structures

H. SUEMATSU, M. NAGASE, Y. TOMOKIYO, M. KARPPINEN, H. YAMAUCHI 389

Single Crystal Study of Enchanced Flux Pinning in (Hg,Pb)(Ba,Sr)2Ca2Cu30g+5

and (Hg,Pb)Sr2Ca2Cu3O8+s

T. AKAO, S. LEE, N. KIRYAKOV, D. EMELYANOV, H. SUEMATSU, H. YAMAUCHI 393

Structural Evolution Induced by Changing Hole Carrier Density in

(Hg,Tl)2Ba2(Cax,Ylx)Cu20y

X J . Wu, A. TOKIWA-YAMAMOTO, T. TATSUKI, S. ADACHI, K. TANABE 397

Chemical Control and Hole Distribution in High-Tc Cuprates

R.S. Liu, J.M. CHEN 401

Anisotropy of Bi15Pb07Sr lgCaCu2Og+5 Single Crystal

T. ISHIDA, K. INOUE, K. OKUDA, Z. HIROI, M. IZUMI, I. CHONG, M. TAKANO 407

Correlation Between Cu Valence, Hole Density and Tc of Bi2212 Superconductors

— Effect of Pb Substitution —

E. SATO, S. KAMBE, K. KOIKE, O. ISHII, S. OHSHIMA 411

Relation Between Superconductivity and Oxidation State of Pb of

(Pb,Cu)Sr2(Ca,Y)Cu20y and (Pb,Cu)(Sr,La)2CuOy Studied by Chemical Analysis

and XPS Measurements

M. KIKUCHI, M. NAGOSHI, M. SHIDA, K. KANEHASHI, Y. SYONO 415

Structure and Physical Properties of ( P b ^ M ^ ) - ^ ^ Phase

Y. ICHIMARU, S. KAMBE, K. YAMAGUCHI, O. ISHII 419

Observation of Electronic Structure of Cuprates by Auger Electron SpectroscopyS. KAMBE, J. ABE, S. OHSHIMA, O. ISHII 423

Hole Distribution and Magnetic-Field Irreversibility in CuCBa^Sr^^CYb, xCax)Cu206tz

T. NAKANE, K. FUJINAMI, M. KARPPINEN, H. YAMAUCHI 427

Effects of Iodine Intercalation on the Structural and Superconducting Properties

of Bi2Sr2 xLnxCuOz (Ln=Nd and Sm) Compound

Y. MURAOKA, M. KIKUCHI, M. HIROI, N. KOBAYASHI, K. HIRAGA, Y. SYONO 431

XVIII

3.3 Syntheses, Phase Relations, and Stability

Crystal Growth of (Bi,Pb)2Sr2CaCu20z and Their Superconducting PropertiesH. FAQIR, M. MANSORI, M. KIKUCHI, Y. SYONO, P. SATRE, A. SEBAOUN 435

ESR of Cu and Gd as a Probe of Chemical Reaction Rates in R-Ba-Cu-O (R=Y, Gd)and Related Systems

K. SUGAWARA, K. YAMAMOTO, K. HOTTA, H. HIROSE 439

Influence of Annealing in Water Vapor on the Structure of YBa2Cu3Ox SingleCrystals

S. EDO, M. MIYAZAWA, T. TAKAMA 443

X-Ray Photoelectron Spectroscopy Studies of the Bi2Sr2CaCu2O Single CrystalSurfaces Heated in Various Atmospheres

Y. YAMAUCHI, T. NAGAMI, S. KISHIDA, H. TOKUTAKA 447

Correlation Between Structural Stability and Water-Durability of High-T.Superconductors

X.G. ZHENG, H. MATSUI, S. TANAKA, M. SUZUKI, C.N. XU 451

4 Critical Current

4.1 Flux Pinning Mechanism

Quench Characteristics of Y1Ba2Cu3075Thin FilmT. Kiss, M. INOUE, K. HASEGAWA, K. OGATA, M. TAKEO, F. IRIE 457

Magnetic Investigations of Hg-Based HTSC: Evidence for Different Kinds ofPinning

C. ECKER, M. BAENITZ, K. LUDERS, E.S. OTABE, T. MATSUSHITA, H.R. KHAN,

E.V. ANTIPOV 461

Effect of Heavy Ion Irradiation on Flux Pinning Properties of Bi2212 andBi(Pb)2212 Single Crystals Having Various y2

J. SHIMOYAMA, Y. NAKAYAMA, T. MOTOHASHI, K. OTZSCHI, N. CHIKUMOTO,

M. KONCZYKOWSKI, K. KISHIO 465

Role of Intrinsic Pinning for Melting Transition of YBa2Cu30693 in the ParallelField to CuO2 Layers

T. ISHIDA, K. KITAMURA, K. OKUDA, H. ASAOKA, A.I. RYKOV, S. TAJIMA 469

Flux Pinning and Irreversibility Line in Superconducting Pb-Bi AlloysA. MATSUDA, T. MURANAKA, T. AKUNE, N. SAKAMOTO 473

Vortex Behaviors in Single Crystalline Bi2Sr2CaCu20g+x Investigated ThroughSpin-Probe ESR Method

A. NISHIDA, C. TAKA, T. YASUDA, K. HORAI 477

Scaling Law for Local Critical Current Distribution in Bi-2223/Ag Wires Estimatedby V-I Characteristics

H. OKAMOTO, F. IRIE, T. KISS, K. HASEGAWA, M. KANAZAWA 481

XIX

Evidence for Planar Pinning in Heavily Pb-Doped Bi2Sr2CaCu20g+ Single Crystals

K. ITAKA, H. TAOKA, S. OOI, T. SHIBAUCHI, T. TAMEGAI 485

Irreversibility Field and Pinning Potential in Bi-2212 Superconducting Single Crystal

T. HIRANO, T. MATSUSHITA, Y. NAKAYAMA, J. SHIMOYAMA, K. KISHIO 489

Neutron Irradiation Effect on the Pinning Properties of Ndl23

N. CHIKUMOTO, T. TERAI, T. KOBAYASHI, M. MURAKAMI 493

Critical Current Density of Y123 Bicrystal Films Grown by LPE Method

T. TAKAGI, J.G. WEN, T. MACHI, Y. TAKAHASHI, I. HIRABAYASHI, N. KOSHIZUKA 497

Normal Transition of Large-Area Superconducting Films Under Non-Stationary

Conditions

N.A. BUZNIKOV, A.A. PUKHOV, A.L. RAKHMANOV 501

The Pinning of Flux Lines by Planar and Point DefectsK.I. KUGEL, A.A. ZHUKOV, A.L. RAKHMANOV 505

Numerical Simulation of Fluxoid Behaviors in BI2212 Single Crystal

K. TAKASE, K. DEMACHI, K. MIYA 509

Magneto-Optical Characterization of (Nd033Eu033Gd03J)Ba2Cu3O Bulk

Superconductors with Different Gd-211 Content

S. KOISHIKAWA, A. DAS, M. MURALIDHAR, M.R. KOBLISCHKA, M. MURAKAMI,

T. NAGATOMO 513

Direct Observation of Flux Patterns to Understand the Effect of Y Addition on the

Jc(B) Properties of Melt-Textured (Nd033Eu033Sm033)Ba2Cu3Oy

A. DAS, M.R. KOBLISCHKA, M. MURALIDHAR, S. KOISHIKAWA, M. MURAKAMI 517

Comparison of the Irreversibility Line Between Magnetization and Magnetoresistance

Measurement for Nd-Ba-Cu-O Crystals

K. WAKI, T. HIGUCHI, S.I. Yoo, M. MURAKAMI 521

Penetration Dynamics of RE-Ba-Cu-0 Superconductors on Pulsed Field

Magnetization

H. FUKAI, K. NAGASHIMA, N. HAYASHI, M. MURAKAMI, T. NAGATOMO 525

Characteristics of the Weibull Parameters Deduced from the I-V Curves Measured

on the Sintered GdBa2Cu30M

Y. MATSUMOTO, H. MIYAMOTO, N. MURATA 529

Magnetic Field Dependence of Critical Current Density of NbTi Thin Films as a

Parameter of Angle

M. TAKEDA, K. NISHIGAKI 533

On Improving Irreversibility Field in Nd442 Rich Ndl23 Systems with a Modified

Growth Technique

H.S. CHAUHAN, M. MURAKAMI 537

Enhancement in Critical Current Density of Bi2Sr2CaCu,Og+x Single Crystal by

Neutron Irradiation Followed by Thermal Annealing — Effect of Neutron

Fluence —

K. OGIKUBO, T. KOBAYASHI, T. TERAI, S. TANAKA, K. KISHIO 541

XX

Bitter Decoration Patterns of Y-System Thin FilmsK. MICHISHITA, Y. SASAKI, Y. HIGASHIDA, Y. KUBO, K. NAKAMURA, K. TAKEDA 545

Superconducting Properties of NdBa2Cu3Ox Thin Films Prepared by Pulsed LaserDeposition Method

Y. ICHINO, K. MATSUMOTO, Y. TAKAHASHI, S.B. KIM, H. IKUTA, I. HIRABAYASHI,

U. MIZUTANI 549

4.2 Vortex Physics

*Small-Angle Neutron Scattering Observation of Vortices in Bi2Sr2CaCu20g+g

J. SUZUKI, N. METOKI, S. MIYATA, M. WATAHIKI, M. TACHIKI, K. KIMURA,

N. KATAOKA, K. KADOWAKI 553

Effect of Geometry and Dimensionality on the Magnetic Response of HTSC ThinFilms

T. HERZOG, H.A. RADOVAN, P. ZIEMANN 559

*Transversal and Longitudinal Vortex Correlation in the Mixed State of HighTemperature Superconductors

D. LOPEZ, W.-K. KWOK, G. CRABTREE 565

Nature of Vortex Liquid in Heavy-Ion Irradiated Bi2Sr2CaCu2O8+y

T. TAMEGAI, M. SATO, N. KAMEDA, T. SHIBAUCHI, S. OOI, M. KONCZYKOWSKI 571

Dynamical Resistivity Behavior Above and Below Vortex Lattice Melting Transitionin Single Crystals Bi2Sr2CaCu2Og+g

J. MIRKOVIC, K. KIMURA, K. KADOWAKI 575

Monte Carlo Simulation on the First-Order Flux-Lattice Melting iSuperconductors

X. Hu, M. TACHIKI 579

Electron Irradiation Effects on the Vortex Phase Diagram in UntwinnedYBa,Cu,0

2 3 y

T. NISHIZAKI, T. NAITO, S. OKAYASU, A. IWASE, N. KOBAYASHI 585

First-Order Decoupling Transition in the Vortex State of Bi2Sr2CaCu2Og+

T. SHIBAUCHI, T. NAKANO, M. SATO, T. KISU, N. KAMEDA, N. OKUDA, S. OOI,

T. TAMEGAI 589

Critical Scaling Analysis of Transport Characteristics Before and After Heavy-IonIrradiation in a YBa2Cu307 g Thin Film

T. SUEYOSHI, N. ISHIKAWA, A. IWASE, Y. CHIMI, T. Kiss, T. FUJIYOSHI, K. MIYAHARA 593

Optical Response and Transport Properties of Epitaxial YBa2Cu3O7 gThinFilms with Columnar Defects

T. FUJIYOSHI, T. SUEYOSHI, N. ISHIKAWA, A. IWASE, Y.CHIMI.

T. Kiss, K. MIYAHARA 597

Study on the Magnetization of HTSC Films by a New Method Based on theTunnel Diode Oscillator with an Open-Flat Coil

S. GEVORGYAN, A. MOVSISYAN, T. KISS, Y. HANAYAMA, T. MATSUSHITA, M. TAKEO,

VS. VYSOTSKY 601

XXI

Transport E(J) Characteristics of High-7 Superconductors in a Wide B-T Plane

Up to 27T

M. INOUE, K. HASEGAWA, T. KISS, M. TAKEO, F. IRIE, S. AWAJI, K. WATANABE 605

A Systematic Study of Vortex States by Means of Josephson Plasma Resonance

I. KAKEYA, R. NAKAMURA, K. KADOWAKI 609

The Second Magnetization Peak Effect Observed in (La, xSrx)2CuO4 Single

Crystal Under H//ab

Y. TOGAWA, T. SASAGAWA, J. SHIMOYAMA, K. KISHIO 613

Magnetization and Entropy Changes at the First-Order Phase-Transition of Vortex-

Lattice in (La, xSrx)2CuO4 Single Crystals

T. SASAGAWA, Y. TOGAWA, J. SHIMOYAMA, K. KITAZAWA, K. KISHIO 617

Vortex Phase Diagram in Bi2Sr2CaCu20 Probed by ac-Susceptibility Measurements

T. SASAGAWA, T. FUJITA, H. KOBAYASHI, J. SHIMOYAMA, K. KITAZAWA, K. KISHIO .... 621

Simulation of Magnetization of Bi2212 Single Crystal by the Fluxoid Dynamics

Method

H. SUGIYAMA, K. DEMACHI, K. TAKASE, K. MIYA 625

4.3 Weak Links

Magnetic Relaxation in Superconducting Fullerenes RbjC^ and ]

N. SAKAMOTO, T. MURANAKA, T. AKUNE, M. BAENITZ, K. LUDERS 629

Microstructures and Intergranular Jc of YBCO Films on MgO Bicrystal Grown by

Liquid Phase Epitaxy

J.G. WEN, T. TAKAGI, N. KOSHIZUKA 633

Transport Characteristics in YBCO Thin Films Under Applying dc and ac Currents

T. NAKAMURA, T. HOSHINO, I. MUTA, T. KISS, T. MATSUSHITA, M. TAKEO 637

Characterization and Evaluation of Transport Current in Oxide Superconducting

Wires

Y. TANAKA, M. MIMURA, A. KIMURA 641

Author Index 1-1Key Word Index 1-9