Superconducting critical-current densities of commercial multifilamentary Nb3Sn(Ti) wires made by the bronze process

Suenaga, M.; Tsuchiya, Kazuyoshi; Higuchi, Norio; Tachikawa, K.

doi:10.1016/0011-2275(85)90037-2

Cited by 34 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This leads to the enhancement of B c2 . An example of similar improvement of the upper critical field is found in commercial Nb 3 Sn doped with Ti [13].…”

Section: Enhancement Of Upper Critical Fieldsupporting

confidence: 62%

Improvement of flux pinning performance at high magnetic fields in GdBa₂Cu₃O_ycoated conductors with BHO nano-rods through enhancement ofB_c2

Matsushita

Nagamizu

Tanabe

et al. 2012

Supercond. Sci. Technol.

View full text Add to dashboard Cite

Addition of BaHfO 3 (BHO) nano-rods as pinning centers into a GdBa 2 Cu 3 O y (GdBCO) coated conductor dramatically improves the critical current properties in high magnetic fields. This is partly ascribed to the strong flux pinning of these pinning centers. In this paper it is reported that this improvement is mainly caused by unexpected enhancement of the upper critical field, B c2 . The mechanism of the enhancement of B c2 is not yet clear, although the strain around the interface between the pinning center and the superconducting matrix or the interface itself may scatter electrons. This result suggests that the critical current property of REBa 2 Cu 3 O y (RE: rare earth elements, REBCO) coated conductors could be designed not only by tailoring the microstructure of pinning centers but also by controlling the intrinsic superconducting property. Especially, the selection of pinning material and its content that determines B c2 is expected to be a key problem for further improvement of the pinning performance at high magnetic fields.

show abstract

“…This leads to the enhancement of B c2 . An example of similar improvement of the upper critical field is found in commercial Nb 3 Sn doped with Ti [13].…”

Section: Enhancement Of Upper Critical Fieldsupporting

confidence: 62%

Improvement of flux pinning performance at high magnetic fields in GdBa₂Cu₃O_ycoated conductors with BHO nano-rods through enhancement ofB_c2

Matsushita

Nagamizu

Tanabe

et al. 2012

Supercond. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Experimental studies [3,6,[11][12] have found that A-15 materials, such as NbsSn, consist mainly of radial and equiaxed superconducting grains separated by layers up to a couple of nanometers thick, as shown in Fig. 1.…”

Section: A Josephson-coupled Grainsmentioning

confidence: 99%

A model for J/sub c/ in granular A-15 superconductors

McDonald

Barzi

2001

IEEE Trans. Appl. Supercond.

View full text Add to dashboard Cite

Abstruct-TheA-15 superconductors, specifically Nb3Sn, appear to be the best candidates for the next generation of highfield accelerator magnets. In order for these materials to be successfully employed in future magnets, a better understanding of their transport and magnetization properties must first be obtained. In this paper, a model is presented for the critical current density Jc in a granular A-15 superconductor. The model is based on previous results for Josephson-coupled arrays, and anisotropic flux pinning by grain boundaries. It is shown that, contrary to what has previously been thought, the observed field dependence of Jc can be explained without having to invoke a flux-shearing mechanism.

show abstract

“…In studying multifilamentary tft^Sn wire, Suenaga et al have observed that in wires in which n is low the n vs B curve is flat over most of the field range and joins the curve for high n wire near the critical field. 8 Furthermore, when the temperature was lowered from 4.2K to 1.8K, the critical currents of both types increased by the same percentage. The value of n stayed constant for the low n wire but increased for the high n wire t>50X it!…”

Section: Variation Of N-value With Applied Fieldmentioning

confidence: 91%

Critical Current Studies on Fine Filamentary NbTi Accelerator Wires

Garber

Suenaga

Sampson

et al. 1986

Advances in Cryogenic Engineering Materials

Self Cite

View full text Add to dashboard Cite

The magnets fov the Superconducting Super Collider, a high energ; proton colliding beam accelerator, require a superconductor with very; high current density (>2400 A/rnm^ at 5 T) and very mall filaments (.r lira in diameter). Previous work has shown that by controlling the formation of Cu^Ti compound particles on the filament surfaces it is possible to make fine filamentary NbTi wire with high critical current density. The performance of multi-filamentary wire is characterited by the current density and the quantity "n" which describes the superconducting-normal transition. Micrographs of wires having high J c and high n shpw smooth, uniform filaments. Recently wires of very high critical current and high n have been produced in experimental quantities by commercial manufacturers.

show abstract

Superconducting critical-current densities of commercial multifilamentary Nb3Sn(Ti) wires made by the bronze process

Cited by 34 publications

References 19 publications

Improvement of flux pinning performance at high magnetic fields in GdBa₂Cu₃O_ycoated conductors with BHO nano-rods through enhancement ofB_c2

Improvement of flux pinning performance at high magnetic fields in GdBa₂Cu₃O_ycoated conductors with BHO nano-rods through enhancement ofB_c2

A model for J/sub c/ in granular A-15 superconductors

Critical Current Studies on Fine Filamentary NbTi Accelerator Wires

Contact Info

Product

Resources

About

Superconducting critical-current densities of commercial multifilamentary Nb3Sn(Ti) wires made by the bronze process

Cited by 34 publications

References 19 publications

Improvement of flux pinning performance at high magnetic fields in GdBa2Cu3Oycoated conductors with BHO nano-rods through enhancement ofBc2

Improvement of flux pinning performance at high magnetic fields in GdBa2Cu3Oycoated conductors with BHO nano-rods through enhancement ofBc2

A model for J/sub c/ in granular A-15 superconductors

Critical Current Studies on Fine Filamentary NbTi Accelerator Wires

Contact Info

Product

Resources

About

Improvement of flux pinning performance at high magnetic fields in GdBa₂Cu₃O_ycoated conductors with BHO nano-rods through enhancement ofB_c2

Improvement of flux pinning performance at high magnetic fields in GdBa₂Cu₃O_ycoated conductors with BHO nano-rods through enhancement ofB_c2