AC loss properties of Cu-sheathed MgB<sub>2</sub>composites with Nb barriers

Funaki, K.; Sueyoshi, T.; Komori, Kazuhiro; Iwakuma, Masataka; Tanaka, Kazuhide; Okada, Minoru; Kumakura, Hiroaki; Hayashi, H.

doi:10.1088/1742-6596/97/1/012316

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…the contribution to the AC losses of the magnetic hysteresis and the eddy currents in the matrix. Some publications treating this kind of MgB 2 wire development have appeared [4][5][6], while other groups experimented with the fabrication of multi-strand MgB 2 cables [7][8][9]. The highest number of filaments reported is 61 [5], while in [4] a minimum filament size of about 75 µm was reached.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and superconducting properties of multifilamentary MgB₂conductors for AC purposes: twisted tapes and wires with very thin filaments

Malagoli¹,

Bernini²,

Braccini³

et al. 2009

Supercond. Sci. Technol.

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In order to use MgB 2 conductors for AC applications, research and development efforts have to be carried out on their architecture and sheath material to minimize the AC losses. This paper will present the fabrication and characterization of two types of ex situ powder-in-tube processed pure MgB 2 conductors with properties making them good candidates for AC industrial applications: a multifilamentary tape with 12 filaments with a twisting pitch down to 17 mm and a 361-filament wire with an average single-filament size of about 30 µm. Concerning the twisted tapes we will present values of critical current density of about 10 5 A cm −2 at 4.2 K and 2 T and we will show that it is possible to achieve a proper compromise between the tape size, the twisting pitch length and the critical current density to face a reduction of the critical current density as a consequence of the strain on the filaments. Concerning the 361-multifilamentary wire we will show appreciable values of critical current density of about 5 × 10 4 A cm −2 at 4.2 K and 2.5 T which, together with the advantages given by the high number of very thin filaments and the non-magnetic matrix, could justify their employment.

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Section: Introductionmentioning

confidence: 99%

Fabrication and superconducting properties of multifilamentary MgB₂conductors for AC purposes: twisted tapes and wires with very thin filaments

Malagoli¹,

Bernini²,

Braccini³

et al. 2009

Supercond. Sci. Technol.

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Experimental study of magnetization AC loss in MgB2 wires and cables with non-magnetic sheath

Kováč

Šouc

Kòváč

et al. 2013

Physica C: Superconductivity

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MgB₂ Wires Fabricated Using the Ex Situ Technique

Malagoli¹,

Braccini²

2016

MgB₂ Superconducting Wires

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AC loss properties of Cu-sheathed MgB₂composites with Nb barriers

Cited by 3 publications

References 11 publications

Fabrication and superconducting properties of multifilamentary MgB₂conductors for AC purposes: twisted tapes and wires with very thin filaments

Fabrication and superconducting properties of multifilamentary MgB₂conductors for AC purposes: twisted tapes and wires with very thin filaments

Experimental study of magnetization AC loss in MgB2 wires and cables with non-magnetic sheath

MgB₂ Wires Fabricated Using the Ex Situ Technique

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AC loss properties of Cu-sheathed MgB2composites with Nb barriers

Cited by 3 publications

References 11 publications

Fabrication and superconducting properties of multifilamentary MgB2conductors for AC purposes: twisted tapes and wires with very thin filaments

Fabrication and superconducting properties of multifilamentary MgB2conductors for AC purposes: twisted tapes and wires with very thin filaments

Experimental study of magnetization AC loss in MgB2 wires and cables with non-magnetic sheath

MgB2 Wires Fabricated Using the Ex Situ Technique

Contact Info

Product

Resources

About

AC loss properties of Cu-sheathed MgB₂composites with Nb barriers

Fabrication and superconducting properties of multifilamentary MgB₂conductors for AC purposes: twisted tapes and wires with very thin filaments

Fabrication and superconducting properties of multifilamentary MgB₂conductors for AC purposes: twisted tapes and wires with very thin filaments

MgB₂ Wires Fabricated Using the Ex Situ Technique