High transport properties in iron-clad MGB 2 wires and tapes

H. Fang; S. Padmanabhan; Y. X. Zhou; P. T. Putman; K. Salama

High transport properties in iron-clad MGB ₂ wires and tapes

H. Fang, S. Padmanabhan, Y. X. Zhou, P. T. Putman, K. Salama

Diagnostic Radiology

Research output: Contribution to conference › Paper › peer-review

Abstract

Iron-clad MgB ₂ superconducting wires and tapes were fabricated using the standard powder-in-tube (PIT) method. The starting precursor was ultra-fine Mg and B mixture powder prepared by high-energy ball milling. Very good grain connections as well as grain refinement were obtained. Under 1.5 Tesla external magnetic field, J _c of MgB ₂ tape is 1.07 × 10 ⁵ A/cm ² and 6.54 × 10 ³ A/cm ² at 20 K and 30 K, respectively. An extrapolation to zero field at 20 K gives a J _c of 3.0 × 10 ⁵ A/cm ². A solenoid with a diameter of 12 mm and 12 turns made from MgB ₂ wires demonstrated the potential for large-scale applications. Under 1 Tesla, the critical current of this solenoid is 159 A and 110 A at 20 K and 30 K, respectively.

Original language	English (US)
Pages	75-82
Number of pages	8
State	Published - Jun 14 2004
Event	Fabrication of Long-Length and Bulk High-Temperature Superconductors - Nashville, TN., United States Duration: Apr 27 2003 → Apr 30 2003

Conference

Conference	Fabrication of Long-Length and Bulk High-Temperature Superconductors
Country	United States
City	Nashville, TN.
Period	4/27/03 → 4/30/03

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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title = "High transport properties in iron-clad MGB 2 wires and tapes",

abstract = "Iron-clad MgB 2 superconducting wires and tapes were fabricated using the standard powder-in-tube (PIT) method. The starting precursor was ultra-fine Mg and B mixture powder prepared by high-energy ball milling. Very good grain connections as well as grain refinement were obtained. Under 1.5 Tesla external magnetic field, J c of MgB 2 tape is 1.07 × 10 5 A/cm 2 and 6.54 × 10 3 A/cm 2 at 20 K and 30 K, respectively. An extrapolation to zero field at 20 K gives a J c of 3.0 × 10 5 A/cm 2. A solenoid with a diameter of 12 mm and 12 turns made from MgB 2 wires demonstrated the potential for large-scale applications. Under 1 Tesla, the critical current of this solenoid is 159 A and 110 A at 20 K and 30 K, respectively.",

author = "H. Fang and S. Padmanabhan and Zhou, {Y. X.} and Putman, {P. T.} and K. Salama",

year = "2004",

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pages = "75--82",

note = "Fabrication of Long-Length and Bulk High-Temperature Superconductors ; Conference date: 27-04-2003 Through 30-04-2003",

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T1 - High transport properties in iron-clad MGB 2 wires and tapes

AU - Fang, H.

AU - Padmanabhan, S.

AU - Zhou, Y. X.

AU - Putman, P. T.

AU - Salama, K.

PY - 2004/6/14

Y1 - 2004/6/14

N2 - Iron-clad MgB 2 superconducting wires and tapes were fabricated using the standard powder-in-tube (PIT) method. The starting precursor was ultra-fine Mg and B mixture powder prepared by high-energy ball milling. Very good grain connections as well as grain refinement were obtained. Under 1.5 Tesla external magnetic field, J c of MgB 2 tape is 1.07 × 10 5 A/cm 2 and 6.54 × 10 3 A/cm 2 at 20 K and 30 K, respectively. An extrapolation to zero field at 20 K gives a J c of 3.0 × 10 5 A/cm 2. A solenoid with a diameter of 12 mm and 12 turns made from MgB 2 wires demonstrated the potential for large-scale applications. Under 1 Tesla, the critical current of this solenoid is 159 A and 110 A at 20 K and 30 K, respectively.

AB - Iron-clad MgB 2 superconducting wires and tapes were fabricated using the standard powder-in-tube (PIT) method. The starting precursor was ultra-fine Mg and B mixture powder prepared by high-energy ball milling. Very good grain connections as well as grain refinement were obtained. Under 1.5 Tesla external magnetic field, J c of MgB 2 tape is 1.07 × 10 5 A/cm 2 and 6.54 × 10 3 A/cm 2 at 20 K and 30 K, respectively. An extrapolation to zero field at 20 K gives a J c of 3.0 × 10 5 A/cm 2. A solenoid with a diameter of 12 mm and 12 turns made from MgB 2 wires demonstrated the potential for large-scale applications. Under 1 Tesla, the critical current of this solenoid is 159 A and 110 A at 20 K and 30 K, respectively.

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