Microstructure and superconducting properties of (BaTiO3, Y2O3)-doped YBCO films under different firing temperatures

Wang, Hongyan; Ding, Fazhu; Gu, Hongwei; Zhang, Huiliang; Dong, Zebin

doi:10.1007/s12598-015-0606-2

Cited by 14 publications

(4 citation statements)

References 20 publications

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“…The uniformly dispersed BZO nanophase in the YBCO layer exhibited good pinning performance, with a 10% BZO‐containing superconducting layer showing a pinning force of 5 GN m −3 at 77 K and 1–1.5 T magnetic field ( B //c). Other studies have also explored the introduction of a second phase to enhance pinning performance, demonstrating the potential for significant advancements in superconducting materials 17,49–64 …”

Section: Methods and Technology Of Introducing The Apcsmentioning

confidence: 99%

“…Other studies have also explored the introduction of a second phase to enhance pinning performance, demonstrating the potential for significant advancements in superconducting materials. 17,[49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64] Novel methods for second phase doping are also being developed. Recent efforts have aimed to refine the adjustable pinning landscape by controlling the nanoparticle size.…”

Section: Secondary Phase Dopingmentioning

confidence: 99%

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A review of vortex pinning in REBa₂Cu₃O_7‐x coated conductors

Wang,

Huang,

Ding

et al. 2024

cMat

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REBa2Cu3O7‐x (REBCO) exhibits outstanding qualities such as a high irreversible field (7 T) and strong current‐carrying capacity (77 K, 106 A cm−2), making it ideal for high magnetic field applications such as fusion, accelerators, and nuclear magnetic resonance. However, the degradation of in‐field critical current density (Jc) due to vortex motion is a significant hurdle. Research indicates that improving vortex pinning can notably enhance Jc in REBCO, showing promise for its future high‐field applications. This review explores vortex pinning mechanisms, artificial pinning centers (APCs), and how environmental conditions affect pinning characteristics, highlighting advancements in vortex pinning for REBCO in magnetic fields. Different methods for introducing APCs are discussed and compared for evaluating their efficacy in achieving optimal nanoparticle distributions and consequent superconducting performance improvements, underscoring the importance of nano‐defect features (type, size, and distribution) in optimizing the superconducting properties of the REBCO. Additionally, the review tackles current challenges, shares recent research breakthroughs, and outlines future research directions for designing pinning landscapes to further improve REBCO performance.

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Section: Methods and Technology Of Introducing The Apcsmentioning

confidence: 99%

Section: Secondary Phase Dopingmentioning

confidence: 99%

A review of vortex pinning in REBa₂Cu₃O_7‐x coated conductors

Wang,

Huang,

Ding

et al. 2024

cMat

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“…Currently, there are four kinds of methods to introduce APCs into 2G-HTS tapes, namely, substrate surface modification, rare-earth element substitution, nano second-phase doping, and particle irradiation. In addition to single types of defects, a combination of two or three methods is also frequently adopted to introduce multiple defects, and there may be synergistic or competitive effects among defects [91][92][93] .…”

Section: Research Progress Of Flux Pinning Of 2g-hts Tapesmentioning

confidence: 99%

Advances in second-generation high-temperature superconducting tapes and their applications in high-field magnets

Wang¹,

Dong²,

Huang³

et al. 2022

Soft Sci

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Second-generation high-temperature superconducting (2G-HTS) tapes based on REBa2Cu3O7-x (REBCO, RE: rare earth) materials enable the energy-efficient and high-power-density delivery of electricity, thereby promoting the development of clean energy generation, conversion, transmission, and storage. To overcome the weak grain-boundary connection and poor mechanical properties of these superconductors, a thin-film technology for epitaxy and biaxial textures based on flexible substrates has been developed. In recent years, high-quality 2G-HTS tapes have been produced at the kilometer scale and used in superconducting demonstration projects. This review first summarizes the development of HTS materials and briefly expounds the properties of REBCO superconducting materials. Subsequently, the structural characteristics, preparation methods, and current research progress of 2G-HTS tapes are given. In addition, the applications of REBCO tapes in constructing high-field magnets are also briefly reviewed.

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“…The REBa 2 Cu 3 O x (REBCO, RE=Rare earth) high-temperature superconductors with higher critical current density is an ideal material for high-field magnets [1][2][3][4][5][6][7][8]. A extremely high hoop stress (also tensile stress) caused by Lorentz force in high-field magnets easily triggers the failure of REBCO tapes.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the effect of edge cracks on critical current degradation in REBCO tapes under tensile stress

Yang¹,

Song²,

Guan³

et al. 2021

Preprint

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The slitting process used for fabrication of REBa 2 Cu 3 O x (REBCO, RE=Rare earth) tapes of required width will greatly improve production efficiency and reduce production costs. However, edge cracks induced by the slitting process of wide REBCO tapes may cause the premature degradation under a extremely high hoop (tensile) stress in high-field magnets. It is necessary to evaluate the edge cracks of REBCO tapes on the critical current (I c ) degradation. This work aims to evaluate the effect of edge cracks on the I c performance under tensile stress. I c degradation under artificial cracks was measured to validate the applicability of linear elastic fracture mechanics for the REBCO film. Linear elastic fracture mechanics was used to get the mixed stress intensity factor of multiple edge oblique cracks. A model considering edge crack properties angle β, spacing d, and length a is constructed to evaluate the critical load and critical cracks properties. When the stress intensity factor at the crack tip is less than K Ic = 2.3 MPa √ m, edge cracks remain stable and do not propagate. Two kinds of REBCO tapes fabricated by different companies are evaluated, and cracks of these tapes will not cause premature degradation. This model could be used to evaluate the operation range of REBCO tapes and improve the manufacturing process.

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Microstructure and superconducting properties of (BaTiO3, Y2O3)-doped YBCO films under different firing temperatures

Cited by 14 publications

References 20 publications

A review of vortex pinning in REBa₂Cu₃O_7‐x coated conductors

A review of vortex pinning in REBa₂Cu₃O_7‐x coated conductors

Advances in second-generation high-temperature superconducting tapes and their applications in high-field magnets

Evaluation of the effect of edge cracks on critical current degradation in REBCO tapes under tensile stress

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Microstructure and superconducting properties of (BaTiO3, Y2O3)-doped YBCO films under different firing temperatures

Cited by 14 publications

References 20 publications

A review of vortex pinning in REBa2Cu3O7‐x coated conductors

A review of vortex pinning in REBa2Cu3O7‐x coated conductors

Advances in second-generation high-temperature superconducting tapes and their applications in high-field magnets

Evaluation of the effect of edge cracks on critical current degradation in REBCO tapes under tensile stress

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Product

Resources

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A review of vortex pinning in REBa₂Cu₃O_7‐x coated conductors

A review of vortex pinning in REBa₂Cu₃O_7‐x coated conductors