Preparation, Microstructure, and High-Field Superconducting Properties of Nb3 Sn Doped with Group-III, -IV, -V, and -VI Elements

Enstrom, R. E.; Appert, J. R.

doi:10.1063/1.1661416

Cited by 42 publications

(8 citation statements)

References 5 publications

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“…The Nb 3 Sn surface became smoother and changed from dull to glossy. In contrast, methane additions led to rougher surfaces, an increase in the average grain size of Nb 3 Sn, and a reduction in critical current in comparison with undoped samples [11].…”

Section: Resultsmentioning

confidence: 93%

“…It is of interest to compare our microstructural data with earlier reports on the microstructure of Nb 3 Sn coatings produced by CVD via hydrogen reduction of niobium and tin chlorides [8][9][10][11]. To control the microstructure of niobium stannide deposits, carbon-containing gases were introduced into the hydrogen or chlorine flow at the inlet of the CVD reactor.…”

Section: Resultsmentioning

confidence: 97%

“…6 lead us to conclude that electrodeposited Nb 3 Sn dissolves up to 0.20 at % C. At higher carbon contents, the coatings consist of two phases. According to Enstrom and Appert [11], Nb 3 Sn prepared via hydrogen reduction of niobium and tin chlorides in the presence of CO 2 dissolves up to 0.18 at % C (Fig. 6, curve 2).…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, partial tantalum substitution for niobium in the A-15 structure markedly increases the upper critical field, without reducing T c [6]. In producing niobium stannide by chemical vapor deposition (CVD), it was found that carbon impurity may also notably enhance the critical current of this material [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

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Effect of carbon on the structure and superconducting properties of Nb3Sn coatings produced by electrocodeposition

Колосов

2004

Inorg Mater

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The effect of carbon doping on the structure and superconducting properties of Nb 3 Sn coatings produced by electrocodeposition of Nb and Sn from molten salts was investigated. The results demonstrate that the addition of fine-particle graphite powder to the melt has an insignificant effect on the microstructure, critical current, and superconducting transition temperature T c of the coatings but reduces the superconducting transition width ( ∆ T c ≤ 0.05). Doping of Nb 3 Sn with carbon from the gas phase (Ar + CCl 4 ) ensures the formation of a fine-grained microstructure and increases the critical current of the material by a factor of 3-3.5 compared to coatings grown in pure argon atmosphere.

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Section: Resultsmentioning

confidence: 93%

Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of carbon on the structure and superconducting properties of Nb3Sn coatings produced by electrocodeposition

Колосов

2004

Inorg Mater

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“…For fields parallel to the c-axis, the pinning force is plotted in Fig. 11 line pins, whereas at high fields it occurs by a synchronous shear of the flux lines around strong line pins which causes the pinning force to follow a (1 -b) 2 dependence as observed, for instance, for Nb3Sn [37]. The high-temperature behaviour, shown in Fig.…”

Section: Critical Currents and Upper Critical Fields In High-t C Supementioning

confidence: 87%

Research in semi-continuous high magnetic fields

Franse

Boer

Frings

et al. 1994

Physica B: Condensed Matter

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Research in semi-continuous high magnetic fieldsFranse, J.J.M.; de Boer, F.R.; Frings, P.H.; de Visser, A. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. AbstractAn overview is presented of the main recent developments in the areas of research in the 40 T High Field Facility at the University of Amsterdam. In addition, the recent progress concerning the available sample environments for experiments in the facility are discussed.

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Pinning Mechanism in Superconducting NbTi Alloys at High Magnetic Fields

Fuchs

1979

Phys. Stat. Sol. (a)

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321For the field dependence of the volume pinning force P ( H ) of superconducting NbTi alloys a positive curvature is found a t high magnetic fields. It is shown that the experimental P ( H ) curve can be described in the high-field range by a model of plastic deformations of the flux line lattic proposed by Schmucker, when line pinning is assumed. The line pinning hypothesis is discussed. Fur die Feldabhangigkeit der Volumenpinningkraft P ( H ) supraleitender NbTi-Proben wird bei hohen magnetischen Feldern eine positive Krummung gefunden. Es wird gezeigt, daB die experimentellen B(H)-Kurven im Bereich hoher magnetischer Felder durch ein Model1 plastischer Deformationen des FluBschlauchgitters das von Schmucker vorgeschlagen wurde, beschrieben werden konnen, wenn Linienpinning vorausgesetzt wird. Die Linienpinninghypothese wird diskutiert.

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Preparation, Microstructure, and High-Field Superconducting Properties of Nb3 Sn Doped with Group-III, -IV, -V, and -VI Elements

Abstract: Erratum: Preparation, microstructure, and highfield superconducting properties of Nb3 Sn doped with groupIII, IV, V, and VI elements

Cited by 42 publications

References 5 publications

Effect of carbon on the structure and superconducting properties of Nb3Sn coatings produced by electrocodeposition

Effect of carbon on the structure and superconducting properties of Nb3Sn coatings produced by electrocodeposition

Research in semi-continuous high magnetic fields

Pinning Mechanism in Superconducting NbTi Alloys at High Magnetic Fields

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