Magnetic microscopy for characterization of local critical current in iron-sheathed MgB 2 wires

Kohei Higashikawa, A. Yamamoto, Takanobu Kiss, S. Ye, A. Matsumoto, H. Kumakura

研究成果: ジャーナルへの寄稿記事

4 引用 (Scopus)

抄録

We have developed a characterization method of local critical current in iron-sheathed MgB 2 wires. Local homogeneity was visualized by the scanning Hall-probe microscopy (SHPM). The value of local critical current was quantified with the aid of the finite element method (FEM) considering the ferromagnetic properties of the iron sheath. The results suggested that MgB 2 wires fabricated by internal Mg diffusion processes still have large longitudinal inhomogeneity and much higher potential than that estimated by the four-probe transport method. This will be very important information for making a correct strategy for further development of MgB 2 wires.

元の言語英語
ページ(範囲)62-64
ページ数3
ジャーナルPhysica C: Superconductivity and its applications
504
DOI
出版物ステータス出版済み - 9 15 2014

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Critical currents
critical current
Microscopic examination
Iron
wire
Wire
microscopy
iron
probes
sheaths
homogeneity
finite element method
inhomogeneity
Scanning
Finite element method
scanning

All Science Journal Classification (ASJC) codes

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

これを引用

Magnetic microscopy for characterization of local critical current in iron-sheathed MgB 2 wires . / Higashikawa, Kohei; Yamamoto, A.; Kiss, Takanobu; Ye, S.; Matsumoto, A.; Kumakura, H.

:: Physica C: Superconductivity and its applications, 巻 504, 15.09.2014, p. 62-64.

研究成果: ジャーナルへの寄稿記事

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AU - Higashikawa, Kohei

AU - Yamamoto, A.

AU - Kiss, Takanobu

AU - Ye, S.

AU - Matsumoto, A.

AU - Kumakura, H.

PY - 2014/9/15

Y1 - 2014/9/15

N2 - We have developed a characterization method of local critical current in iron-sheathed MgB 2 wires. Local homogeneity was visualized by the scanning Hall-probe microscopy (SHPM). The value of local critical current was quantified with the aid of the finite element method (FEM) considering the ferromagnetic properties of the iron sheath. The results suggested that MgB 2 wires fabricated by internal Mg diffusion processes still have large longitudinal inhomogeneity and much higher potential than that estimated by the four-probe transport method. This will be very important information for making a correct strategy for further development of MgB 2 wires.

AB - We have developed a characterization method of local critical current in iron-sheathed MgB 2 wires. Local homogeneity was visualized by the scanning Hall-probe microscopy (SHPM). The value of local critical current was quantified with the aid of the finite element method (FEM) considering the ferromagnetic properties of the iron sheath. The results suggested that MgB 2 wires fabricated by internal Mg diffusion processes still have large longitudinal inhomogeneity and much higher potential than that estimated by the four-probe transport method. This will be very important information for making a correct strategy for further development of MgB 2 wires.

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