Journal ArticleDOI
Ultra-high flux pinning properties of BaMO3-doped YBa2Cu3O7−x thin films (M = Zr, Sn)
Paolo Mele,Kaname Matsumoto,T. Horide,Ataru Ichinose,Masashi Mukaida,Yutaka Yoshida,Shigeru Horii,Ryusuke Kita +7 more
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TLDR
In this paper, the flux pinning properties of BaZrO3-doped YBa2Cu3O7−x and BaSnO3doped yBa2C3O 7−x films were studied.Abstract:
We studied the flux pinning properties of BaZrO3-doped YBa2Cu3O7−x and BaSnO3-doped YBa2Cu3O7−x films. We found that BaSnO3-doped films showed very high global pinning forces, Fp, of 28.3 GN m−3 (77 K, ) and 103 GN m−3 (65 K, ), twice that of BaZrO3-doped films. Transmission electron microscopy analysis showed that, in both films, nanorods of the dopant phase were incorporated. The BaSnO3 nanorods were nearly straight but the BaZrO3 nanorods became curved with the increasing film thickness.read more
Citations
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Synergetic combination of different types of defect to optimize pinning landscape using BaZrO 3 -doped YBa 2 Cu 3 O 7
Boris Maiorov,S. A. Baily,Honghui Zhou,Ozan Ugurlu,Ozan Ugurlu,J. A. Kennison,Paul Dowden,Terry G. Holesinger,S. R. Foltyn,Leonardo Civale +9 more
TL;DR: The controlled combination of two effective pinning centres (randomly distributed nanoparticles and self-assembled columnar defects) is shown to be possible and effective and to produce thick films with remarkable Ic(H) and nearly isotropic angle dependence.
Journal ArticleDOI
Artificial pinning center technology to enhance vortex pinning in YBCO coated conductors
Kaname Matsumoto,Paolo Mele +1 more
TL;DR: In this paper, artificial pinning centers (APCs) were successfully introduced into high-temperature superconductors (HTS) by nanotechnology, in order to strongly pin the quantized vortices.
Journal ArticleDOI
Nanoscale strain-induced pair suppression as a vortex-pinning mechanism in high-temperature superconductors
Anna Llordes,Anna Palau,Jaume Gazquez,Jaume Gazquez,Mariona Coll,R. Vlad,Alberto Pomar,Jordi Arbiol,Jordi Arbiol,Roger Guzmán,Shuai Ye,V. Rouco,Felip Sandiumenge,Susagna Ricart,Teresa Puig,Maria Varela,Daniel Chateigner,Johan Vanacken,J. Gutierrez,Victor Moshchalkov,Guy Deutscher,César Magén,Xavier Obradors +22 more
TL;DR: A new vortex- pinning mechanism based on the bond-contraction pairing model is suggested, where pair formation is quenched under tensile strain, forming new and effective core-pinning regions.
Journal ArticleDOI
High Mobility in a Stable Transparent Perovskite Oxide
Hyung Joon Kim,Useong Kim,Hoon Kim,Tai Hoon Kim,Hyo Sik Mun,Byung-Gu Jeon,Kwang Taek Hong,Woong-Jhae Lee,Chanjong Ju,Kee Hoon Kim,Kookrin Char +10 more
TL;DR: In this paper, La-doped BaSnO3 with perovskite structure has an unprecedented high mobility at room temperature while retaining its optical transparency, reaching 320 cm2 V-1 s-1 at a doping level of 8×1019 cm-3, constituting the highest value among wideband-gap semiconductors.
Journal ArticleDOI
Growth, nanostructure and vortex pinning in superconducting YBa2Cu3O7 thin films based on trifluoroacetate solutions
Xavier Obradors,Teresa Puig,Susagna Ricart,Mariona Coll,Jaume Gazquez,Anna Palau,Xavier Granados +6 more
TL;DR: In this article, the authors review advances in the knowledge of all the steps relevant to the preparation of YBa2Cu3O7 (YBCO) thin films based on TFA precursors as a chemical solution deposition (CSD) methodology: solution preparation and deposition, pyrolysis processes, intermediate phase evolution, nucleation and growth phenomena, microstructural evolution and its influence on percolating supercurrents, as well as vortex pinning by natural existing defects.
References
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Journal ArticleDOI
Multiferroic BaTiO3-CoFe2O4 Nanostructures.
Haimei Zheng,Jian Wang,Samuel E. Lofland,Z. Ma,L. Mohaddes-Ardabili,T. Zhao,Lourdes Salamanca-Riba,S. R. Shinde,Satishchandra Ogale,Feiming Bai,Dwight Viehland,Y. Jia,Darrell G. Schlom,Manfred Wuttig,Alexander L. Roytburd,Ramamoorthy Ramesh +15 more
TL;DR: Thermodynamic analyses show that the magnetoelectric coupling in a nanostructured BaTiO3-CoFe2O4 ferroelectromagnet can be understood on the basis of the strong elastic interactions between the two phases.
Journal ArticleDOI
High-Tc superconducting materials for electric power applications.
TL;DR: The feasibility of superconducting power cables, magnetic energy-storage devices, transformers, fault current limiters and motors, largely using (Bi,Pb)2Sr2Ca2Cu3Ox conductor, is proven but widespread applications now depend significantly on cost-effective resolution of fundamental materials and fabrication issues, which control the production of low-cost, high-performance conductors of these remarkable compounds.
Journal ArticleDOI
Strongly enhanced current densities in superconducting coated conductors of YBa2Cu3O7-x + BaZrO3
Judith L. MacManus-Driscoll,Judith L. MacManus-Driscoll,Stephen R. Foltyn,Quanxi Jia,Haiyan Wang,Adriana Serquis,Leonardo Civale,Boris Maiorov,Marilyn E. Hawley,M. P. Maley,Dean E. Peterson +10 more
TL;DR: This work demonstrates a simple and industrially scaleable route that yields a 1.5–5-fold improvement in the in-magnetic-field current densities of conductors that are already of high quality.
Journal ArticleDOI
Vortex confinement by columnar defects in YBa2Cu3O7 crystals: Enhanced pinning at high fields and temperatures.
L. Civale,A. D. Marwick,Thomas K. Worthington,M. A. Kirk,James R Thompson,Lia Krusin-Elbaum,Yang Ren Sun,John R. Clem,F. Holtzberg +8 more
TL;DR: A microstructure is realized which leads to very strong high-temperature flux pinning in YBa and Cu crystals, and causes a considerable enlargement of the irreversibility region in the H-T plane.
Journal ArticleDOI
Materials science challenges for high-temperature superconducting wire
S. R. Foltyn,Leonardo Civale,Judith L. MacManus-Driscoll,Judith L. MacManus-Driscoll,Quanxi Jia,Boris Maiorov,Hsing-Lin Wang,M. P. Maley +7 more
TL;DR: The question is whether the advantages of superconducting wire, such as efficiency and compactness, can outweigh the disadvantage: cost.