Optimization of BaZrO3 concentration as secondary phase in superconducting YBa2Cu3O7 for high current applications

Malik, Bilal A.; Malik, Manzoor Ahmad

doi:10.1063/1.4948512

Cited by 7 publications

(3 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are several reports in the recent past in which the vortex pinning properties of REBCO superconductors has been improved by intentionally adding non-superconducting secondary phase nanoparticles. Incorporation of different secondary phases such as Al 2 O 3 [71], TiO 2 [72], WO 3 [73], BaTiO 3 [74], BaZrO 3 [75,76] etc. into YBCO polycrystalline bulk samples have been reported in the past which resulted in the enhancement of in-field J c of YBCO bulk samples.…”

Section: Nanoscale Secondary Phase Inclusions/rebco Based Nanocompositesmentioning

confidence: 99%

Superconductive REBCO Thin Films and Their Nanocomposites: The Role of Rare-Earth Oxides in Promoting Sustainable Energy

Jha

Matsumoto

2019

Front. Phys.

View full text Add to dashboard Cite

The lossless transmission of direct electrical currents in superconductors is very often regarded as an "energy superhighway" with greatly enhanced efficiency. With the discovery of high temperature superconductors (HTS) in the late eighties, the prospect of using these materials in efficient and advanced technological applications became very prominent. The elevated operating temperatures as compared to low temperature superconductors (LTS), relaxing cooling requirements, and the gradual development of facile synthesis processes raised hopes for a broad breakthrough of superconductor technology. The impact of superconductor technology on the economy and energy sectors is predicted to be huge if these are utilized on a large scale. The development of superconducting tapes with high critical current density (J c) is crucial for their use in transmission cables. Many countries these days are running projects to develop wires from these HTS materials and simultaneously field trials are being conducted to assess the feasibility of this technology. These HTS wires can carry electrical currents more than 100 times larger than their conventional counterparts with minimal loss of energy. The increased efficiency of HTS electric power products may result in greatly reduced carbon emissions compared to those resulting from using the conventional alternatives. In order to use the thin films of YBa 2 Cu 3 O 7−δ (YBCO) and REBCO [RE (rare-earth) = Sm, Gd, Eu etc.], members of the HTS family, for future technological applications, the enhancement of J c over wide range of temperatures and applied magnetic fields is highly desired. The enhancement of J c of YBCO and REBCO films has been successfully demonstrated by employing different techniques which include doping by rare-earth atoms, incorporating nanoscale secondary phase inclusions into the REBCO film matrix, decoration of the substrate surface etc. which generate artificial pinning centers (APCs). In this review, the development of the materials engineering aspect that has been conducted over the last two decades to improve the current carrying capability of HTS thin films is presented. The effect of controlled incorporation of APCs through various methods and techniques on the superconducting properties of YBCO and REBCO thin films is presented, heading toward superior performance of such superconducting thin films.

show abstract

Section: Nanoscale Secondary Phase Inclusions/rebco Based Nanocompositesmentioning

confidence: 99%

Superconductive REBCO Thin Films and Their Nanocomposites: The Role of Rare-Earth Oxides in Promoting Sustainable Energy

Jha

Matsumoto

2019

Front. Phys.

View full text Add to dashboard Cite

show abstract

“…many of the proposed devices used in sustainable energy production, transport, and storage [1,2]. Over the last ten years, great efforts have been made in designing the optimal pinning landscape of REBa 2 Cu 3 O 7 (REBCO, where RE represents a rare-earth element) coated conductors for targeted applications using different techniques such as substrate surface modification [3,4], addition or substitution of rare-earth elements [5], or incorporation of nanoscale superconducting secondary phase materials [6,7]. The incorporation of these secondary phases into the superconducting material can be achieved either by modifying the growth process [8] or by post-growth ion irradiation [9,10].…”

Section: Introductionmentioning

confidence: 99%

Flux pinning dynamics in optimally proton irradiated REBCO coated conductors

A Soman,

Wimbush,

Long

et al. 2024

Supercond. Sci. Technol.

View full text Add to dashboard Cite

Particle irradiation offers a route to incorporating additional flux pinning centres in high-temperature superconducting wires with minimal disruption to the pre-existing defect landscape, thereby further enhancing the critical current in a controllable fashion. This work is a comprehensive study of the fluence-dependence of proton irradiation using protons of two energies, 2.5 and 1.2 MeV, in enhancing the critical current performance in commercially available (Y,Dy)Ba2Cu3O7−δ coated conductors. A sequence of fluences covering the range from 1 × 1015 to 5 × 1016 protons cm−2 was used in the irradiation process to study the flux pinning in this material. The resulting samples were characterized using field angle-dependent transport critical current measurements over a range of temperatures from 20 K to 77.5 K and magnetic fields up to 8 T, thus covering the wide range of operating conditions. Optimisation of fluence for highest performance at each energy resulted in a similar level of isotropic critical current enhancement, a factor 2.6 improvement at 20 K and 8 T, but with a significant difference in the optimised fluence in each case. The lower energy 1.2 MeV protons produce this enhancement at a three-fold lower fluence compared to 2.5 MeV protons, a result of their higher electronic energy loss. The different samples are analysed within the framework of the maximum entropy model, helping to understand the vortex dynamics before and after irradiation.

show abstract

“…Different research groups have already attempted several approaches to enhance YBCO's pinning properties, popular of them being chemical doping and insertion of nano-sized non-superconducting secondary phases in the YBCO matrix [11][12][13][14]. The ideal technique to increase the flux pinning strength is to add artificial pinning centers (APCs) in the form of nanoparticles to those already existing in the YBCO matrix to restrict vortex motion.…”

Section: Introductionmentioning

confidence: 99%

Enhancing pinning ability by the addition of potassium niobate nanorods in YBCO superconductor

Kumar,

Dahiya,

Khare

2023

Phys. Scr.

View full text Add to dashboard Cite

In the current study, we have investigated the effect of adding potassium niobate (KNbO3) nanorods (NRs) in YBCO superconductor to improve flux pinning properties. The KNbO3-NRs are synthesized by hydrothermal method, and KNbO3-YBCO nanocomposites are prepared by incorporating variable amounts of the NRs in YBCO matrix by solid-state reaction method. X-ray diffraction (XRD) pattern confirmed the orthorhombic phase of YBCO, KNbO3-NRs, and KNbO3-YBCO nanocomposite samples. The morphology and composition of the YBCO, KNbO3, and KNbO3-YBCO nanocomposites are studied using field emission scanning electron microscopy (FESEM) and energy-dispersive x-ray spectroscopy (EDX). Magnetic measurements of KNbO3-YBCO nanocomposites are carried out at temperatures from 15 to 65 K under an external magnetic field from -7 to + 7 T. The value of critical temperature (TC0) in xKNbO3-YBCO nanocomposites showed no significant decrease from the TC0 value obtained for YBCO, indicating that inserting a modest amount of KNbO3-NRs into the YBCO matrix does not result in substantial changes in TC0. The critical current density (JC) showed an enhancement of ∼ 3.6 times in 0.5wt%KNbO3-YBCO nanocomposite compared to YBCO. Additionally, when the concentration of KNbO3-NRs in YBCO was raised, the critical current density (JC) decreased due to the accumulation of KNbO3-NRs at the interfaces between grain boundaries. The rate of JC decay decreases as the externally applied field increases for nanocomposite samples compared to YBCO, showing an improvement in the pinning properties of nanocomposites.

show abstract

Optimization of BaZrO3 concentration as secondary phase in superconducting YBa2Cu3O7 for high current applications

Cited by 7 publications

References 45 publications

Superconductive REBCO Thin Films and Their Nanocomposites: The Role of Rare-Earth Oxides in Promoting Sustainable Energy

Superconductive REBCO Thin Films and Their Nanocomposites: The Role of Rare-Earth Oxides in Promoting Sustainable Energy

Flux pinning dynamics in optimally proton irradiated REBCO coated conductors

Enhancing pinning ability by the addition of potassium niobate nanorods in YBCO superconductor

Contact Info

Product

Resources

About