Study on Cold-Drawing in Powder-in-Tube Process in Fabricating Silver-Sheathed (Bi,Pb)-Sr-Ca-Cu-O Tapes

Imaduddin, Agung; Hendrik, Hendrik; Yudanto, Sigit Dwi; Nugraha, Heri; Sebleku, Pius; Pramono, Andika Widya

doi:10.1088/1742-6596/1091/1/012004

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…10,11 There are a few reports on the routes to improve the mechanical properties of these materials such as RHQ and/or the addition of Ti and Nb. 5,12 The PIT technique has been extensively explored to make multifilamentary wires of brittle superconducting materials such as high T C ceramics, 13,14 MgB 2 , 15 a) Electronic mail: lsschandra@rrcat.gov.in Fe based superconductors, 16,17 and V 3 Ga, 18 as well as Nb 3 Sn 18,19 . Similarly, brittle ZrV 2 based materials can also be promising candidates for making multifilamentary wires using the PIT technique.…”

Section: Introductionmentioning

confidence: 99%

Superconductivity in V$_{1-x}$Zr$_x$ alloys]{Evolution of high field superconductivity and high critical current density in the as-cast V$_{1-x}$Zr$_x$ alloys

Chandra,

Paul,

Khandelwal

et al. 2019

Preprint

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We report here the structural, electrical and magnetic properties of as-cast V 1−x Zr x alloys (x =0 -0.4) at low temperatures. We observe that all the alloys undergo successive peritectic and eutectic reactions during cooling from the melt which leads to the formation of five phases, namely, a body centred cubic β-V phase, two phases with slightly different compositions having face centred cubic ZrV 2 structure, a hexagonal closed packed α-Zr phase, and the β-Zr precipitates. The amount of each phase is found to be dependent on the concentration of zirconium in vanadium. The β-V and ZrV 2 phases show superconductivity below 5.3 K and 8.5 K respectively. We show that the critical current density is large for V-rich V 1−x Zr x alloys with x > 0.1. The grain boundaries generated from the eutectic reaction, and the point defects formed due to the variation in the composition are found to be responsible for the pinning of flux lines in low and high magnetic fields respectively. Our studies reveal that the choice of the composition and the heat treatment which leads to eutectic reaction are important in improving the critical current density in this alloy system.

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Section: Introductionmentioning

confidence: 99%

Superconductivity in V$_{1-x}$Zr$_x$ alloys]{Evolution of high field superconductivity and high critical current density in the as-cast V$_{1-x}$Zr$_x$ alloys

Chandra,

Paul,

Khandelwal

et al. 2019

Preprint

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Structural and magnetic properties of the as-cast V1−xZrx alloy superconductors

Chandra

Paul

Khandelwal

et al. 2019

Journal of Applied Physics

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We report here the structural, electrical, thermal, and magnetic properties of the as-cast V1−xZrx alloys (x=0–0.4) at low temperatures. We observe that all the alloys undergo successive peritectic and eutectic reactions during cooling from the melt, which leads to the formation of five phases, namely, a body centered cubic β-V phase, two phases with slightly different compositions having a face centered cubic ZrV2 structure, a hexagonal closed packed α-Zr phase, and the β-Zr precipitates. The amount of each phase is found to be dependent on the concentration of zirconium in vanadium. The β-V and ZrV2 phases show superconductivity below 5.2 K and 8.5 K, respectively. We show that the critical current density is large for the V-rich V1−xZrx alloys with x>0.1. The grain boundaries generated from the eutectic reaction and the point defects formed due to the variation in the composition are found to be responsible for the pinning of flux lines in low and high magnetic fields, respectively. Our studies reveal that the choice of the composition and the heat treatment, which leads to eutectic reactions are important in improving the critical current density in this alloy system.

show abstract

Study on Cold-Drawing in Powder-in-Tube Process in Fabricating Silver-Sheathed (Bi,Pb)-Sr-Ca-Cu-O Tapes

Cited by 2 publications

References 15 publications

Superconductivity in V$_{1-x}$Zr$_x$ alloys]{Evolution of high field superconductivity and high critical current density in the as-cast V$_{1-x}$Zr$_x$ alloys

Superconductivity in V$_{1-x}$Zr$_x$ alloys]{Evolution of high field superconductivity and high critical current density in the as-cast V$_{1-x}$Zr$_x$ alloys

Structural and magnetic properties of the as-cast V1−xZrx alloy superconductors

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