Výsledky vyhledávání - "D. M. Feldmann"

Vertical Interface Effect on the Physical Properties of Self-Assembled Nanocomposite Epitaxial Films

Autor: Haiyan Wang, Yongqiang Wang, Judith L. MacManus-Driscoll, D. M. Feldmann, Menka Jain, Hao Yang, Paul Dowden, Quanxi Jia, Jongsik Yoon

Publikováno v: Advanced Materials. 21:3794-3798

Composite metal oxides have been extensively investigated in bulk and thin film forms because of their wide range of applications in microelectronics, magneto electronics, and optoelectronics. Metal oxides in nanocomposite form are particularly appea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::db93c2efdd4d1d3472e9b42fc0d286d0
https://doi.org/10.1002/adma.200900781

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Composite ${\rm Y}_{2}{\rm O}_{3}-{\rm Al}_{2}{\rm O}_{3}$ as Diffusion Barrier/Nucleation Layer for HTS Coated Conductors Based on IBAD MgO

Autor: Boris Maiorov, Liliana Stan, Quanxi Jia, D. M. Feldmann, Paul Dowden, Leonardo Civale, Igor O. Usov, Terry G. Holesinger, Raymond F. DePaula

Publikováno v: IEEE Transactions on Applied Superconductivity. 19:3459-3462

A composite layer has been successfully implemented in high temperature superconducting (HTS) coated conductors (CCs) based on ion beam assisted deposition (IBAD) MgO technology. This layer serves a dual function: a nucleation layer for the growth of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8821ff42c33b6693ebc017989bdc9530
https://doi.org/10.1109/tasc.2009.2017923

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Progress in Nanoengineered Microstructures for Tunable High-Current, High-Temperature Superconducting Wires

Autor: Martin W. Rupich, Leonardo Civale, W. Zhang, Boris Maiorov, Yibing Huang, Alexis P. Malozemoff, Xiaoping Li, Z. G. Chen, Terry G. Holesinger, Thomas A. Kodenkandath, D. M. Feldmann, David C. Larbalestier, Victor A. Maroni, J.Y. Coulter, Ron Feenstra, Dean J. Miller

Publikováno v: Advanced Materials. 20:391-407

High critical current densities (J{sub c}) in thick films of the Y{sub 1}Ba{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO, {Tc}{approx}92 K) superconductor directly depend upon the types of nanoscale defects and their densities within the films. A major chal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8d18c40a192a8ed8f5c62adee096d9b
https://doi.org/10.1002/adma.200700919

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Critical Currents$rm I_rm c(77 rm K)≫350 rm A/cm$-Width Achieved in Ex Situ YBCO Coated Conductors Using a Faster Conversion Process

Autor: D. M. Feldmann, David K. Christen, F.A. List, Terry G. Holesinger, Albert A. Gapud, Eliot D. Specht, Ron Feenstra

Publikováno v: IEEE Transactions on Appiled Superconductivity. 15:2803-2807

Implementation of improved processing for BaF/sub 2/ ex situ YBCO coatings from e-beam evaporated precursors enables faster conversion with rates up to 12 /spl Aring//s and critical currents I/sub c/ at 77 K greater than 350 A/cm-width on a RABiTS te

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2b996baf6d9cdaa49b76b0735da91b5b
https://doi.org/10.1109/tasc.2005.848217

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Examination of current limiting mechanisms in monocore Bi/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub x/ tape with high critical current density

Autor: K. DeMoranville, X. Y. Cai, Ronald D. Parrella, D. M. Feldmann, A. A. Polyanskii, D. Yu, D. C. Larbalestier, Jianyi Jiang, Satyabrata Patnaik

Publikováno v: IEEE Transactions on Appiled Superconductivity. 11:3269-3272

Magneto-optical imaging, electromagnetic measurements and SEM have been used for the characterization of a monocore BSCCO tape made by oxide powder-in-tube process which had a transport J/sub c/ (77 K, 0 T) of 37 kA/cm/sup 2/. Our study evaluates the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ecb24d6b018e007ac917cacfc118bead
https://doi.org/10.1109/77.919760

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Microstructural and magneto-optical characterization of high J/sub c/ BSCCO-2223/Ag tapes

Autor: D. C. Larbalestier, T.C. Shields, J.S. Abell, Jianyi Jiang, A. A. Polyanskii, D. M. Feldmann

Publikováno v: IEEE Transactions on Appiled Superconductivity. 9:1812-1815

The phase and microstructural evolution, and critical current density of (Bi,Pb)-2223/Ag tapes prepared from a variety of precursor powders have been investigated. Correlations between the reaction kinetics, the microstructure and the critical curren

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5357a0643c6acadcd98e54dcd653df1a
https://doi.org/10.1109/77.784808

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Scanning laser imaging of dissipation in YBa2Cu3O7−δ-coated conductors

Autor: D. M. Feldmann, A. A. Polyanskii, Dmytro Abraimov, Alex Gurevich, Alexey V. Ustinov, Alexander P. Zhuravel, G. Daniels, D. C. Larbalestier

Publikováno v: Applied Physics Letters. 85:2568-2570

We investigate dc-current flow in high-jc YBa2Cu3O7−δ-coated conductors by low-temperature laser scanning microscopy (LTLSM) and correlate the LTLSM response to magneto-optical imaging (MOI) and grain boundary (GB) misorientation. Because the volt

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b566ce1b478a8760ec1fa61289705afe
https://doi.org/10.1063/1.1794377

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Influence of nickel substrate grain structure on YBa2Cu3O7−x supercurrent connectivity in deformation-textured coated conductors

Autor: T. L. Peterson, A. A. Polyanskii, Gregory Kozlowski, Iman Maartense, Jodi L. Reeves, Rama Nekkanti, D. M. Feldmann, M. Tomsic, C.E. Oberly, David C. Larbalestier, Paul N. Barnes, Susan E. Babcock, R. R. Biggers

Publikováno v: Scopus-Elsevier

Coupled magneto-optical imaging and local misorientation angle mapping have been used to demonstrate the percolative nature of supercurrent flow in YBa2Cu3O7−x(YBCO) coated conductors grown on deformation-textured Ni substrates. Barriers to current

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9e7634e1f2d5a0dae1978fa62fcc55f3
https://doi.org/10.1063/1.1315631

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Dynamics of single vortices in grain boundaries: I-V characteristics on the femtovolt scale

Autor: D. M. Feldmann, Beena Kalisky, Hans Hilgenkamp, Ariando, Rafael B. Dinner, Eli Zeldov, Elizabeth Nowadnick, S. Wenderich, Kathryn A. Moler, John R. Kirtley

Publikováno v: Applied physics letters, 94(20):202504. American Institute of Physics
Applied Physics Letters

We employed a scanning Hall probe microscope to detect the hopping of individual vortices between pinning sites along grain boundaries in YBa2Cu3O6+δ thin films in the presence of an applied current. Detecting the motion of individual vortices allow

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::931267fbf290da09973edce53ec473db
https://research.utwente.nl/en/publications/83adedb6-4115-4b8e-965e-aaa0b17e2f78

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