High-Efficient Method for Introducing Nanometer Y2Ba 4 CuNbO x Flux Pinning Centers in Single-Domain YBa2Cu3O7−δ Bulk Superconductors by TSIG Process

Li, Jiawei; Yang, Wan‐Min; Wang, Miao; Guo, Yixuan; Feng, Zhongling

doi:10.1007/s10948-015-3008-7

Cited by 7 publications

(3 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As can be seen, the highest levitation force of the drilled SmBCO sample reached 66.3 N, and the density of the levitation force was close to 8.24 N/cm 2 . This result indicates that the drilled single domain SmBCO bulk superconductor had a slightly lower performance compared with the normal REBCO (RE = Y, Gd, and Sm) bulk superconductor fabricated at SNNU [24][25][26]. This may be because the sub-domain boundaries from the surface near the holes exist as the specific surface area increases.…”

Section: The Superconducting Properties Of the Drilled Single Domain Smbco Bulk Superconductormentioning

confidence: 95%

Influence of Artificially Macroscopical Drilling on the Crystal Growth Orientation of Single Domain SmBCO Bulk Superconductor

et al. 2021

Self Cite

View full text Add to dashboard Cite

A large drilled single domain SmBa2Cu3O7−δ (SmBCO) bulk superconductor with a diameter of 32 mm and different hole sizes was successfully fabricated using the modified top-seeded infiltration and growth (TSIG) process. The morphology, superconducting properties, and grain boundary orientation growth of the drilled SmBCO samples were investigated. It was found that not only are the properties of the drilled sample equivalent to those of normal SmBCO bulk superconductors, but also the NdBCO seed crystal can be well controlled because of the increase in the specific surface area in the solid phase pellet. In addition, the growth orientation along the tangent direction of the holes was first noticed in the drilled single domain SmBCO bulk superconductor. This conclusion is highly important for the accurate control of the growth temperature of high temperature bulk superconductors.

show abstract

Section: The Superconducting Properties Of the Drilled Single Domain Smbco Bulk Superconductormentioning

confidence: 95%

Influence of Artificially Macroscopical Drilling on the Crystal Growth Orientation of Single Domain SmBCO Bulk Superconductor

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…The maximum trapped field of B=0.16 T was obtained in a bulk of 18 mm diameter with 0.4 mol% Fe-B alloys particles, which was 31% higher than that in undoped bulks. The addition of Gd 2 Ba 4 CuMO y (M=Zr, Mo, Fe, Nb, etc) [22][23][24] improves the performance of trapping fields of the bulks. Recrystallization of the fine inclusions was proposed by Li et al [25] in the bulk grown with BaTiO 3 particles, which decreases the pushing of Gd211 particles and forms in situ fine particles to produce a J C value of 52.5 kA cm −2 .…”

Section: Flux Pinning and Flux Trappingmentioning

confidence: 99%

Melt-growth bulk superconductors and application to an axial-gap-type rotating machine

Zhang

Zhou

Ida

et al. 2016

Supercond. Sci. Technol.

View full text Add to dashboard Cite

The present manuscript addresses key issues in the course of our study of materials processing of bulk high-temperature superconductors, trapped flux and its application to a prototype axial-gap-type rotating machine. The TUMSAT group has conducted a series of studies since 2003 on the growth of GdBa2Cu3O7−δ bulk material and its application in a compact low-speed high-torque rotating machine. In the stage of material growth, gaining the advantage of a large motive torque density requires large integrated flux in the motor/generators. A large grain surface might be required with sophisticated techniques for the melt-growth texture in the bulk with optimal flux pinning. In the second stage, the in situ magnetization procedure for bulk superconductors in the applied machine is a crucial part of the technology. Pulsed current excitation by using an armature copper winding has magnetized field pole bulks on the rotor. The axial-gap flux synchronous machine studied in the past decade is a condensed technology and indicates that further scientific development is required for a future compact machine to be superior to conventional ones in accordance with the cryogenic periphery and flux stabilization.

show abstract

“…A solution to this problem is to increase the levitation force, which could permit to design guideways simpler than those used nowadays and as a consequence, to reduce the quantity of magnets required to build them. Various solutions have been investigated for this purpose [9][10][11][12][13][14][15][16][17][18][19][20][21]. We mention especially hybrid levitation, which consists in the introduction below the vehicles of magnets in direct interaction with the guideway and has recently resulted in a 17% increase of the levitation force with respect to a classical set-up [22].…”

Section: Introductionmentioning

confidence: 99%

Increased levitation force in a stable hybrid superconducting magnetic levitation set-up

2022

View full text Add to dashboard Cite

We present results obtained with an original hybrid set-up permitting to increase strongly the levitation force of Superconducting Magnetic Levitating (SML) systems. We compare levitation force measurements carried out with this set-up to measurements carried out with a conventional one. We investigate the stability of the proposed system by measuring the lateral (or restoring) force. We show how to calculate the measured levitation and lateral forces from: i) those measured in the conventional configuration and ii) the repulsive force between the magnets included in the system. We discuss the conditions of stability of the proposed system as well as the consequences that its introduction could have on the future of SML MAGLEV trains.

show abstract

High-Efficient Method for Introducing Nanometer Y2Ba 4 CuNbO x Flux Pinning Centers in Single-Domain YBa2Cu3O7−δ Bulk Superconductors by TSIG Process

Cited by 7 publications

References 20 publications

Influence of Artificially Macroscopical Drilling on the Crystal Growth Orientation of Single Domain SmBCO Bulk Superconductor

Influence of Artificially Macroscopical Drilling on the Crystal Growth Orientation of Single Domain SmBCO Bulk Superconductor

Melt-growth bulk superconductors and application to an axial-gap-type rotating machine

Increased levitation force in a stable hybrid superconducting magnetic levitation set-up

Contact Info

Product

Resources

About