Applied Superconductivity Center

If you want more information on one of the presentations you find , you can find the presenter's contact information here .

2003-2004

Under Construction

2002

23rd International Conference on Low Temperature Physics
August 20-27, 2002

Poster
"Vortex Dynamics in Easy Flow Channels and Electronic Structure of Grain Boundaries in High-Tc Superconductors" - Gurevich, A.

Applied Superconductivity Conference (ASC), Houston, TX
August 4-9, 2002

"Improving Flux Pinning at High Fields in Intermetallic Superconductors: Clues from MgCNi₃ and MgB₂" - Cooley, L.D.
"Layer Current Density and Grain Boundary Pinning Force of Binary and Ternary Powder-in-Tube Nb₃Sn Conductors" - Fischer, C.M.
"Electric Field Distribution Near Defects and its Effect on Current-Carrying Capability, Dissipation and Stability of Superconductors" - Gurevich, A.
"Critical Current Limiting Factors in Post Annealed (Bi,Pb)2Sr₂Ca₂Cu₃O_x Tapes" - Jiang, J.
"The Microstructure and Micro-Chemistry of High Critical Current Nb₃Sn Strands Manufactured by the Bronze, Internal-Sn and PIT Techniques" - Lee, P.J.
"Microchemical and Microstructural Comparison of High Performance Nb₃Al Composites" - Lee, P.J.
"Local Measurements of Current Density by Magneto-Optical Current Reconstruction in Normally and Over Pressure Processed Bi-2223 Tapes" - Patnaik, S.
"Magneto-Optical Study of MgB₂ Wires Produced by Hot Isostatic Pressing (HIP) Process" - Polyanskii, A.
"Microstructure and J_c Improvements in Overpressure Processed Ag-Sheathed Bi-2223 Tapes" - Yuan, Y.

Poster
"Observations of Complex Critical Current Distributions in High J_c Monocore Ag/Bi2223 Tapes" - Cai, X.Y.
"Irreversibility Field Studies from 30-77K of Post Annealed BSCCO-2223" - Chandler, J.G.
"Investigation of the Relationships Between Superconducting Properties and Nb3Sn Reaction Conditions in Powder-in-Tube Nb₃Sn Conductors" - Fischer, C.M.
"Thickness Dependence of Critical Current Density for YBCO Coated Conductors" - Kim, S.I.

European Materials Research Society (E-MRS) Spring Meeting, Strasbourg, France
June 18-21, 2002

"Recent Advances in Overpressure Processing 2223 BSCCO Wire" - Hellstrom, E.E.

12th International Cryocooler Conference, Cambridge, MA
June 18-20, 2002

"Regenerator Loss Measurements at Low Temperatures and High Frequencies" - Pfotenhauer, J.M.

BOROMAG International Workshop on Superconductivity in Magnesium Diboride and Related Materials, Genoa, Italy
June 17-19, 2002

Invited
"Irreversibility Fields, Upper Critical Fields and Critical Current Densities of Bulk and Thin Films Forms of MgB₂" - Larbalestier, D.C.

Oral
"Flux Pinning in MgB₂: What do we want? How might we get it?" - Cooley, L.D.

Poster
"Clean Limit Behavior in Mg-Deficient Bulk MgB₂" - Braccini, V.

Superconductors for Practical Applications (SPA), Xi'an, China
June 16-20, 2002

Invited
"Jc Distribution and Connectivity in Ag/Bi2223 Tapes" - Cai, X.Y.

American Physical Society, Indianapolis, IN
March 18-22, 2002

Oral
"Core Pinning by Iintragranular Nanoprecipitates in Polycrystalline MgCNi₃" - Cooley, L.D.
"Nonlinear Flux Flow, ac Resonance and Phase Locking of Vortices in Easy Flow Channels Along Grain Boundaries" - Gurevich, A.
"Thermally Activated Current Transport in MgB₂ Films" - Patnaik, S.

Poster
"Local Current Distribution in Superconducting Tapes" - Patnaik, S.

2001

10th U.S.-Japan Workshop on High-Tc Superconductors, Santa Fe, NM
December 3-5, 2001

"Recent Developments in the Processing and Characterization of Bi-2223 Conductors" - Hellstrom, E.

Invited
"Critical Currents,Grain Boundaries, and Doping Effects in YBCO" - Larbalestier, D.C.

VIII International Workshop on Vortex Physics, Bariloche, Argentina
November 27-December 1, 2001

Invited
"Nonlinear Flux Flow, Resonances and Phase Locking of Vortices on Grain Boundaries" - Gurevich, A.

Materials Research Society Fall Meeting (MRS), Boston, MA
November 26-30, 2001

Invited
"Material Issues of MgB₂ Thin Films" - Eom, C-B.
"Current Flow in YBa₂Cu₃O_x Deformation Textured Coated Conductors" - Larbalestier, D.C.

Oral
"Post Annealing of BSCCO-2223-Why is it Useful?" - Jiang, J.
"Anisotropy Grain Morphology and Crystallographic Texture in Polycrystalline MgB₂ Superconductors" - Song, X.

Poster
"Structural Characterization of Polycrystalline Perovskite MgCNi₃ Superconductor" - Song, X.
"Characterization of Individual Filaments Extracted from a Bi-2223/Ag Tape" - VanderMeer, O.

International Superconductivity Symposium, Kobe, Japan
September 35-27, 2001

Invited
"Material Issues and Challenges in MgB2 Superconducting Thin Films for Wires and Electronic Aplications" - Eom, C-B.

17th International Conference on Magnet Technology (MT-17), Geneva, Switzerland
September 24-28, 2001

Plenary
"Perspectives for the Further Development of Low Temperature Superconductors" - Larbalestier, D.C.

5th European Conference on Applied Superconductivity (EUCAS), Copenhagen, Denmark
August 26-30, 2001

Invited
"MgB2: How Anisotropic Is It? What are J_c, H*(T), Hc2(T)? Do Grain Boundaries Obstruct Current? Can it be Usefully Alloyed?" - Larbalestier, D.C.

Oral
"Overpressure Processing of Ag-Sheathed Bi-2223 Conductors" - Hellstrom, E.

Poster
"Magneto-Optical Study of Flux Penetration in MgB₂" - Polyanskii, A.

Cryogenic Engineering Conference and International Cryogenic Materials Conference (CEC/ICMC), Madison, WI
July 16-20, 2001

"Influence of the Cu-Sn Mixing Heat Treatments on the Superconducting Properties of Two High-Sn, Internal-Sn Nb₃Sn Conductors" - Naus, M.
"H - T Phase Diagram of MgB₂" - Patnaik, S.
"Magneto-Optical Studies of the Critical State in Bulk MgB₂" - Polyanskii, A.
"Anisotropic Grain Morphology and Crystallographic Texture in Polycrystalline MgB2 Thin Films, Sintered Pellets and Filaments" - Song, X.

Oral
"Analysis of the Shuttle Heat Loss Mechanism in GM Type Pulse Tube Refrigerators" - Baik, J.H.
"Field and Temperature Dependence of the Critical Current Density of a PIT Nb-₃Sn Composite Determined by Magnetization Measurements of Tube-Shaped Reaction Layers" - Cooley, L.D.
"Quench Dynamics in Silver Coated RABiTS YBCO Tapes" - Duckworth, R.C.
"Dynamics and Pinning of Vortices on Grain Boundaries in HTS" - Gurevich, A.
"Improved Critical Current Density of Ag-Clad Bi-2223 Tapes by Controlled Processing" - Jiang, J.
"Intrinsic Properties of Low and High Sn Niobium-Tin Strands" - Lee, P.
"Reentrant Pinning Properties at Fractional Filling Density in Heavy Ion Irradiated Bi₂Sr₂CaCu₂O₈ Superconducting Platelets" - Patnaik, S.
"Investigation of Granularity and Connectivity in Monocore Bi₂Sr₂CaCu₂O₈ Tapes" - Polyanskii, A.

Poster
"Influence of Ni Grain Boundaries in RABiTS on YBCO Connectivity" - Feldmann, D.M.
"H* and Jc as a Function of Heat Treatment Time and Temperature for Powder-in-Tube Nb₃Sn Conductors" - Fischer, C.
"BSCCO Cation Diffusion Through Ag to Form Complex Oxides" - Hellstrom, E.
"Effect of Solidification Conditions on Electromagnetic Properties and Microstructure of Melt Processsed Bi2212/Ag Tapes" - Hellstrom, E.
"Crack Formation in Nb₃Sn Strands" - Jewell, M.
"Kinetics of the Restoration of Core Connectivity in Ag/Bi-2223 Tapes by Post-Deformation Thermal Processing" - Polyanskii, A.
"Variability of Primary Superconducting Properties in Nb₃Sn Composites" - Squitieri, A.
"Overpressure Processing of Ag-Sheathed BSCCO Tape" - Yuan, Y.

Cryogenic Society of America Short Course Symposium, Madison, WI
July 15, 2001

Invited
"Low Temperature Superconductors" - Lee, P.
"Current Lead Design" - Pfotenhauer, J.M.

ISTEC/MRS International Workshop on Superconductivity, Honolulu, HI
June 24-27, 2001

Oral
"Influence of Ni Grain Boundaries in RABiTS on YBCO Connectivity" - Feldmann, D.M.

Invited
"Bi-2223: Prospects for Further Developments in Critical Current Performance" - Hellstrom, E.

Particle Accelerator Conference (PAC 2001), Chicago, IL
June 18-19, 2001

Invited
"Superconducting Materials and Applications (High and Low Temperature)" - Cooley, L.D.

International Superconducting Experts Planning Meeting, Arlington, VA
June 11-12, 2001

Invited
"Superconductor Choices: LTS, HTS OR MgB₂: Where Grain Boundaries are Benign" - Larbalestier, D.C.

Joint SCENET/Supercurrent Workshop, Alpbach, Austria
June 8-11, 2001

Invited
"MgB₂: Connectivity, Nanostructure, and Flux Pinning in Bulk and Thin Films" - Cooley, L.D.

10th International Workshop on Critical Currents (IWCC), Gottingen, Germany
June 4-7, 2001

"Single Grain Boundary Properties of YBCO Thin Film Bicrystals and Coated Conductors" - Feldmann, D.M.

Invited
"Requirements for Next Generation Mb-Ti Superconductors with Artificial Pinning Centers" - Cooley, L.D.
"Flux Flow of Abrikosov-Josephson Vortices Along Low-Angle Grain Boundaries in High-T_c Superconductors" - Gurevich, A.
"MgB₂: Do Grain Boundaries Obstruct Current? How Anisotropic Is it? Can it be Usefully Alloyed?" - Larbalestier, D.C.

Interwire 2001, Atlanta, GA
May 13-18, 2001

Invited
"Niobium-Titanium Superconducting Wires: Nanostructures by Extrusion and Wire Drawing" - Lee, P.

Materials Research Society Spring Meeting (MRS), San Francisco, CA
April 16-20, 2001

Invited
"MgB₂: How Anisotropic Is It? What are J_c, H*(T), Hc2(T)? Do Grain Boundaries Obstruct Current? Can it be Usefully Alloyed?" - Larbalestier, D.C.

American Physical Society, Seattle, WA
March 12-16, 2001

"Current Transport and Magnetic Relaxation Near and Below the Irreversibility Line of MgB₂" - Cai, X.Y.
"Magnetic Transitions in MgB₂" - Cooley, L.D.
"Synthesis and Properties of MgB₂ Superconducting Thin Films" - Eom, C-B
"Strongly Linked Current Flow in Polycrystalline Forms of the New Superconductor MgB₂" - Larbalestier, D.C.
"Magneto-Optical Study of Flux Penetration in MgB₂" - Polyanskii, A.
"Vortex Flow in Low-Angle Bicrystal Substrate YBCO Thin Film Grain Boundaries" - Rzchowski, M.S.

Oral
"Dynamic Vortex Structures on Grain Boundaries in a High Magnetic Field" - Gurevich, A.
"Vortex Avalanches and Magnetic Flux Fragmentation in Superonductors" - Gurevich, A.
"Heat Capacity Measurements on MgB₂" - Patnaik, S.

NRIM/TML, Tsukuba, Japan
February 2001

Invited
"Quantitative Analysis of A15 Superconductor Microstructures" - Lee, P.

2000

Materials Research Society (MRS) Fall Meeting, Boston, MA
November 27-December 1, 2000

"Electromagnetic Properties of Calcium-Doped and Undoped YBCO Bicrystals" - Daniels, G.A.
"Nickel Grain Boundary Induced Current Barriers in YBCO Coated Conductors" - Reeves, J.L.
"Competitiveness of Processing Goals for Attaining Ideal Microstructure in Melt Processed Bi2212/Ag Conductors" - Rikel, M.O.
"Comparisons of Microstructure in Pure and Ca-Doped YBa₂Cu₃O_7-d Epitaxial Thin-Film Bicrystal Grain Boundaries" - Song, X.

VLHC 2nd Annual Meeting, Long Island, NY
October 16-18, 2000

Invited
"Superconductor Status and Prospects" - Lee, P.

13th International Symposium on Superconductivity (ISS), Tokyo, Japan
October 14-16, 2000

Invited
"Development of 2201 Intergrowths During Melt Processing Bi2212/Ag Conductors" - Hellstrom, E.

International Workshop on Critical Currents and Application of HTS (IWCCA-HTS), Fukuoka, Japan
October 2000

Plenary
"Grain Boundaries and Current Transport in High-T_c Superconductors" - Gurevich, A.

Topical Workshop on Interfaces and Grain Boundaries in High Temperature Superconductors, Williamsburg, VA
September 25-27, 2000

"The Simplicities and Complexities of Grain Boundaries in YBCO" - Babcock, S.E.
"Properties of Low Angle Ca-Doped Bicrystals" - Daniels, G.A.
"Materials Science Principles Underlying Interface Design and Fabrication for HTS" - Eom, C-B
"Mechanisms of Current Transport Through GB in High T_c Superconductors" - Gurevich, A.
"Variability of Bicrystal Transport Behavior: Why?" - Larbalestier, D.C.
"Variability of Grain Boundary Microstructure in Thin Film Bicrystals" - Song, X.

Applied Superconductivity Conference (ASC), Virginia Beach, VA
September 17-22, 2000

Plenary
"Critical Currents: Just How Critical Are They?" - Larbalestier, D.C.

Invited
"Influence of the Substrate Grain Structure on the Structure and Properties of YBCO Coated Conductors" - Babcock, S.E.
"HTS Power Applications: Fundamentals to Wires, Short Course" - Larbalestier, D.C.
"Influence of the Substrate Grain Structure on the Structure and Properties of YBCO Coated Conductors" - Reeves, J.L.

Oral
"Determination of the Critical Temperature and Composition Distributions in Nb₃Sn Conductors Using Heat Capacity, Inductive Critical Temperature, and Electron Microscopy Measurements" - Hawes, C.D.
"Correlation of Density, Porosity and Jc in Ag-Clad Bi-2223 Tapes" - Jiang, J.
"Compositional and Microstructural Profiles Across Nb₃Sn Filaments" - Lee, P.
"Examination of Current Limiting Mechanisms in Monocore Ag/BSCCO Tapes with High Critical Current Density" - Polyanskii, A.
"Formation and Ordering of 2201 Intergrowths in Melt-Processed Bi2212/Ag Tapes" - Rikel, M.O.

Poster
"Anisotropy of the Upper Critical Field in Nb-Ti Tapes" - Cooley, L.D.
"Shift of the Flux-Pinning Force Curve in Nb₃Sn Thin Films with Very Fine Grain Size" - Cooley, L.D.
"Influence of Process Conditions on the Inter and Intragrain Transport Properties of Low Angle Thin Film Ca-Doped and Not Doped YBCO Bicrystals" - Daniels, G.A.
"Contact Resistance and Normal Zone Propagation in YBCO Coated Conductors" - Duckworth, R.C.
"Characterization of Small Systems of Grain Boundaries in High-J_c YBCO Coated Conductor Tapes" - Feldmann, D.M.
"Influence of Intermediate Heat Treatment Temperature and Phase State on the Superconducting Properties of Internal Sn Nb₃Sn Conductors" - Naus, M.T.

Microscopy and Microanalysis (M&M), Philadelphia, PA
August 13-17, 2000

Poster
"Position Normalization as a Tool to Extract Compositional and Microstructural Profiles from Backscatter and Secondary Electron Images" - Lee, P.

11th International Cryocooler Conference, Keystone, CO
June 20-22, 2000

"Compressor-Specific Design of a Single Stage Pulse Tube Refrigerator for HTS Electric Power Transformers" - Baik, J.H.

Invited
"Compressor Specific Design of a Single Stage Pulse Tube Refrigerator" - Pfotenhauer, J.M.

International Workshop on Superconductivity, Shimane Prefecture/Matsue, Japan
June 19-22, 2000

Invited
"Connections Among Substrate Structure, YBCO Microstructure and Critical Current Density in RABITS-type Coated Conductors" - Babcock, S.E.
"Magneto-Optical Characterization of High-T_c Superconductors for the Large Scale Application" - Polyanskii, A.

International Cryogenic Materials Conference (ICMC), Rio de Janeiro, Brazil
June 11-15, 2000

Plenary
"Challenges to Process High J_c AG-Sheathed 2212 Tapes" - Hellstrom, E.

International Workshop on Interface Controlled Materials: Research and Design, St. Petersburg, Russia
June 5-9, 2000

Invited
"Connections Among Substrate Structure, Thin Film Superconductor Microstructure and Performance of Prototype High T_c Superconductor "Wires" - Babcock, S.E.
"Local Grain Boundary Misorientation and Current Paths in YBCO High T_c Superconductor Coated Conductors" - Babcock, S.E.

International Theory Workshop: Nanoscale Superconductivity and Magnetism, Argonne National Laboratory, Argonne, IL
June 2000

Invited
"Mesoscopic Vortex Structures on Grain Boundaries in HTS" - Gurevich, A.

SCENET Topical Workshop on Coated Conductors, Gottingen, Germany
May 25-26, 2000

Invited
"Low Angle Grain Boundaries and their Influence in Coated Conductors" - Larbalestier, D.C.

Magnets for a Very Large Hadron Collider Workshop, Batavia IL
May 24-26, 2000

"Towards Higher Critical Currents in Nb₃Sn Superconductors: Recent Results from the U. of Wisconsin-Madison - Lee, P.

Invited
"Conductors for VLHC Magnets" - Lee, P.

3rd SIAM Conference on Materials Science, Philadelphia, PA
May 22-24, 2000

Invited
"Nonlinear Current Flow Around Defects in High-T_c Superconductors" - Gurevich, A.

American Physical Society Spring Meeting (APS), Minneapolis, MN
March 18-24, 2000

Invited
"HTS Power Applications: Fundamentals to Wires" - Larbalestier, D.C.
"Nonlinear Current Flow and Electric Field Domains in Inhomogeneous Superconductors" - Gurevich, A.

129th TMS Annual Meeting, Nashville, TN
March 12-16, 2000

"Microstructure of YBCO Films Deposited on Oxide Buffered Rolling Assisted Biaxially Textured Ni Substrates" - Yang, C.Y.

6th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors (M2S-HTSC-VI), Houston, TX
February 20-25, 2000

"The Properties of Low Angle Grain Boundaries in High-Temperature Superconductors" - Larbalestier, D.C.
"Effect of PAIR Process on Microstructure of Ag-Sheathed Bi-2212 Tapes" - Reeves, J.L.
"Effect of Various Processing Variables on Grain Alignment at Bi-2212/Ag Interface" - Rikel, M.O.
"On the Minimum of Tc in Superconducting Solid Solutions Pb_1-xSn_xMo₆S₈" - Rikel, M.O.

Poster
"Nonlinear Current Flow and Electric Field Domains in Inhomogeneous Superconductors" - Gurevich, A.

Invited
"Influence of HTS Grain Boundaries on Critical Current Density" - Larbalestier, D.C.