Fabrication of MgB2 superconducting wire by in situ PIT method

T. Machi; S. Shimura; N. Koshizuka; M. Murakami

doi:10.1016/S0921-4534(03)01160-2

Fabrication of MgB₂ superconducting wire by in situ PIT method

T. Machi, S. Shimura, N. Koshizuka, M. Murakami

Research output: Contribution to journal › Conference article › peer-review

31 Citations (Scopus)

Abstract

We have fabricated the MgB₂ superconducting wire with a copper sheath by using an in situ synthesis powder in tube (PIT) method. The diameter of MgB₂ wire was reduced down to 0.5 mm. MgB₂ coil with 27 mmØ inner diameter and 3.5 m length was made using this wire. In the first current raising process, the critical current (I_c) of the coil was 76 A at 4.2 K in self-field which corresponded to J_c ≈ 170, 000 A/cm² and J_e ≈ 40,000 A/cm² was achieved in magnetic field of H ≈ 0.14 T. In the second run, the coil did not quench at the maximum current of 200 A, which corresponded to J_c ≈ 440,000 A/cm², J_e ≈ 100,000 A/cm² and H ≈ 0.37 T.

Original language	English
Pages (from-to)	1039-1042
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	392-396
Issue number	PART 2
DOIs	https://doi.org/10.1016/S0921-4534(03)01160-2
Publication status	Published - 2003 Oct
Externally published	Yes
Event	Proceedings of the 15th International Symposium on Superconduc - Yokohama, Japan Duration: 2002 Nov 11 → 2002 Nov 13

Keywords

In situ PIT
MgB
Superconducting wire

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4534(03)01160-2

Cite this

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title = "Fabrication of MgB2 superconducting wire by in situ PIT method",

abstract = "We have fabricated the MgB2 superconducting wire with a copper sheath by using an in situ synthesis powder in tube (PIT) method. The diameter of MgB2 wire was reduced down to 0.5 mm. MgB2 coil with 27 mm{\O} inner diameter and 3.5 m length was made using this wire. In the first current raising process, the critical current (Ic) of the coil was 76 A at 4.2 K in self-field which corresponded to Jc ≈ 170, 000 A/cm2 and Je ≈ 40,000 A/cm2 was achieved in magnetic field of H ≈ 0.14 T. In the second run, the coil did not quench at the maximum current of 200 A, which corresponded to Jc ≈ 440,000 A/cm2, Je ≈ 100,000 A/cm2 and H ≈ 0.37 T.",

keywords = "In situ PIT, MgB, Superconducting wire",

author = "T. Machi and S. Shimura and N. Koshizuka and M. Murakami",

note = "Funding Information: This work is supported by the Japan Science and Technology Foundation (JST). We would like to thank Tokyo Wire Works, Ltd. for swaging and drawing our wires. ; Proceedings of the 15th International Symposium on Superconduc ; Conference date: 11-11-2002 Through 13-11-2002",

year = "2003",

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doi = "10.1016/S0921-4534(03)01160-2",

language = "English",

volume = "392-396",

pages = "1039--1042",

journal = "Physica C: Superconductivity and its Applications",

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TY - JOUR

T1 - Fabrication of MgB2 superconducting wire by in situ PIT method

AU - Machi, T.

AU - Shimura, S.

AU - Koshizuka, N.

AU - Murakami, M.

N1 - Funding Information: This work is supported by the Japan Science and Technology Foundation (JST). We would like to thank Tokyo Wire Works, Ltd. for swaging and drawing our wires.

PY - 2003/10

Y1 - 2003/10

N2 - We have fabricated the MgB2 superconducting wire with a copper sheath by using an in situ synthesis powder in tube (PIT) method. The diameter of MgB2 wire was reduced down to 0.5 mm. MgB2 coil with 27 mmØ inner diameter and 3.5 m length was made using this wire. In the first current raising process, the critical current (Ic) of the coil was 76 A at 4.2 K in self-field which corresponded to Jc ≈ 170, 000 A/cm2 and Je ≈ 40,000 A/cm2 was achieved in magnetic field of H ≈ 0.14 T. In the second run, the coil did not quench at the maximum current of 200 A, which corresponded to Jc ≈ 440,000 A/cm2, Je ≈ 100,000 A/cm2 and H ≈ 0.37 T.

AB - We have fabricated the MgB2 superconducting wire with a copper sheath by using an in situ synthesis powder in tube (PIT) method. The diameter of MgB2 wire was reduced down to 0.5 mm. MgB2 coil with 27 mmØ inner diameter and 3.5 m length was made using this wire. In the first current raising process, the critical current (Ic) of the coil was 76 A at 4.2 K in self-field which corresponded to Jc ≈ 170, 000 A/cm2 and Je ≈ 40,000 A/cm2 was achieved in magnetic field of H ≈ 0.14 T. In the second run, the coil did not quench at the maximum current of 200 A, which corresponded to Jc ≈ 440,000 A/cm2, Je ≈ 100,000 A/cm2 and H ≈ 0.37 T.

KW - In situ PIT

KW - MgB

KW - Superconducting wire

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U2 - 10.1016/S0921-4534(03)01160-2

DO - 10.1016/S0921-4534(03)01160-2

M3 - Conference article

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SN - 0921-4534

VL - 392-396

SP - 1039

EP - 1042

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - PART 2

T2 - Proceedings of the 15th International Symposium on Superconduc

Y2 - 11 November 2002 through 13 November 2002

ER -