Strongly enhanced current densities in superconducting coated conductors of YBa2Cu3O7–x + BaZrO3

MacManus‐Driscoll, Judith L.; Foltyn, S. R.; Jia, Q. X.; Wang, H.; Serquis, A.; Civale, L.; Maiorov, B.; Hawley, M. E.; Maley, M. P.; Peterson, D. E.

doi:10.1038/nmat1156

Cited by 1,113 publications

(710 citation statements)

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“…However, with YBCO + BaSnO 3 films, an α of 0.2-0.3 at 77 K was measured. A value of 0.3 for α is consistent with the value of α that was observed in other strongly pinning systems with Y 2 O 3 , BaZrO 3 particles [20,8].…”

Section: Energy (Kev)supporting

confidence: 88%

Flux pinning enhancement in YBa₂Cu₃O_7−xfilms with BaSnO₃nanoparticles

Varanasi,

Barnes,

Burke

et al. 2006

Supercond. Sci. Technol.

135

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The public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Department of Defense, Washington Headquarters Services, Directorate for Information PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATION University of Dayton Research Institute ABSTRACTNanoparticles of BaSnO 3 were incorporated into YBa 2 Cu 3 O 7-x (YBCO) films on LaAlO 3 substrates for magnetic flux pinning enhancements. More than an order of magnitude improvement in the high field magnetization J c at 6 T at 77 K was observed as compared to regular YBCO films. The irreversibility field (H irr ) was increased to 8.5 T at 77 K and to 13.4 T at 65 K. The in-field transport current measurements confirmed an order of magnitude improvement in high fields. More than an order of magnitude improvement in the high field magnetization J c at 6 T at 77 K was observed as compared to regular YBCO films. The irreversibility field (H irr ) was increased to 8.5 T at 77 K and to 13.4 T at 65 K. The in-field transport current measurements confirmed an order of magnitude improvement in high fields. The angular dependence of the J c data at 1 T showed that J c H c is 1.3 times higher than J c H ab indicating the presence of c-axis correlated defects. Transmission electron microscopy studies revealed the presence of a large density of uniformly distributed ∼10 nm sized BaSnO 3 precipitates and strain fields around them. A dual sector pulsed laser deposition target is used to produce the films, thus eliminating reactions between BaSnO 3 and YBCO during the target preparation stage, but may allow the BaSnO 3 to react locally and create defects that act as pinning centres.

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Section: Energy (Kev)supporting

confidence: 88%

Flux pinning enhancement in YBa₂Cu₃O_7−xfilms with BaSnO₃nanoparticles

Varanasi,

Barnes,

Burke

et al. 2006

Supercond. Sci. Technol.

135

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“…While in the first superconducting cables the critical currents were limited by weak links, in the second generation superconducting wires based on aligned YBa 2 Cu 3 O 7 (YBCO) films this problem was mostly resolved and critical currents are determined by vortex pinning. An impressive progress has been made to enhance critical currents in these films using both isotropic [1][2][3][4][5][6][7] and columnar [8][9][10] inclusions. In spite of this progress, understanding of strong pinning mechanisms is far from satisfactory.…”

Section: Introductionmentioning

confidence: 99%

Theory and simulations on strong pinning of vortex lines by nanoparticles

Koshelev

Kolton

2011

Phys. Rev. B

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Pinning of vortex lines by array of nanoparticles embedded inside superconductors became the most efficient practical way to achieve high critical currents. In this situation pinning occurs via trapping of the vortex-line segments and the critical current is determined by the typical length of trapped segment. To verify analytical estimates and develop a quantitative description of strong pinning, we numerically simulated isolated vortex lines driven through array of nanoparticles. We found that the critical force grows roughly as a square root of the pin density and it is strongly suppressed by thermal noise. The configurations of pinned lines are strongly anisotropic, displacements in the drive directions are much larger than in the transverse direction. Moreover, we found that the roughening index for the longitudinal displacements exceeds one. This indicates that the local stresses in the critical region increase with the total line length and the elastic description breaks down in the thermodynamic limit. Thermal noise reduces the anisotropy of displacements in the critical regions and straightens the lines.

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“…Goyal [46,47] and MacManus-Driscoll [48] were able to produce such an ordered array of BZO nanodots in YBCO by simply performing laser ablation from a single target comprising a mixture of YBCO powder and BZO nanoparticles. During simultaneous deposition of YBCO and BZO, the two phases were found to separate in the growing film and interact through the strain field similar to consecutively deposited phases.…”

Section: Self-assembled Nanostructuresmentioning

confidence: 99%

Nanotechnologies to Enable High‐Performance Superconductors for Energy Applications

Cantoni

Goyal

2013

Nanotechnology for the Energy Challenge

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High Temperature Superconductors (HTS) wires or coated conductors (CC) hold promise to revolutionize the transmission of electricity enabling the present electric grid to meet the world's growing energy needs. Although superconducting wires can carry 150 times more power than copper wires of the same cross section, further performance improvements are necessary for the superconducting technology to become costcompetitive. This objective can be achieved by introducing and controlling nano-sized defects and non-superconducting phases within the superconducting film's matrix. Such nanostructures, when carefully engineered, significantly increase the loss-free current sustained by the superconductor through a mechanism known as flux pinning. This chapter is a review of the various types of nanostructures that are artificially introduced in superconducting films to enhance the superconductor's performance. Different approaches, materials, and techniques are discussed and the most recent results in this field compared. The last section of this chapter discusses an additional example of 2 nanotechnology employment in superconducting wires. This nanotechnology can be regarded as an atomic surface treatment designed to enable the right crystallographic orientation of the superconducting film deposited on the metal template. Overcoming limitations to superconductors' performanceEfficient transport and storage of energy are two key factors in the formidable quest to meet the world's growing energy needs. Because electricity is the energy form of choice for most uses, and the most effective way to transport energy from and to different locations, addressing the energy problem means necessarily addressing the shortcomings of the present electric power grid. Capacity and reliability of the present grid are entirely inadequate to accommodate an expected growth in energy demand of 50% by the year 2030, most of which will be concentrated in urbanized areas whose infrastructures are already severely congested. In addition, 7 -10 % of the electricity generated is lost in the grid by heat dissipation, and transmission limitations have already caused black outs throughout the world. Superconducting cables made with high critical temperature (T c ) cuprate superconductors have the potential to transform the grid to meet the 21 st century demands. Such cables can carry five times more power then copper cables with the same cross section and exhibit considerable lower losses (loss-free dc transmission). Because lower losses enable longer transmission lengths, superconductors provide the best choice for building a new, non-fragmented, super grid that will enable massive long-distance power transmission, interconnect entire continents, and provide widespread, local energy storage. In such a grid, renewable source power plants in the most remote areas can deliver power anywhere in the continent according to real time demands, and episodic 3 surpluses are readily stored for future use. High temperature superconducting (HTS) cabl...

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Strongly enhanced current densities in superconducting coated conductors of YBa2Cu3O7–x + BaZrO3

Cited by 1,113 publications

References 19 publications

Flux pinning enhancement in YBa₂Cu₃O_7−xfilms with BaSnO₃nanoparticles

Flux pinning enhancement in YBa₂Cu₃O_7−xfilms with BaSnO₃nanoparticles

Theory and simulations on strong pinning of vortex lines by nanoparticles

Nanotechnologies to Enable High‐Performance Superconductors for Energy Applications

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Strongly enhanced current densities in superconducting coated conductors of YBa2Cu3O7–x + BaZrO3

Cited by 1,113 publications

References 19 publications

Flux pinning enhancement in YBa2Cu3O7−xfilms with BaSnO3nanoparticles

Flux pinning enhancement in YBa2Cu3O7−xfilms with BaSnO3nanoparticles

Theory and simulations on strong pinning of vortex lines by nanoparticles

Nanotechnologies to Enable High‐Performance Superconductors for Energy Applications

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Product

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Flux pinning enhancement in YBa₂Cu₃O_7−xfilms with BaSnO₃nanoparticles

Flux pinning enhancement in YBa₂Cu₃O_7−xfilms with BaSnO₃nanoparticles