Development of MgB2-based bulk supermagnets

Michael R. Koblischka; Alexander Wiederhold; Miryala Muralidhar; K. Inoue; Thomas Hauet; Bruno Douine; Kevin Berger; Masato Murakami; Uwe Hartmann

doi:10.1109/TMAG.2014.2323995

Development of MgB₂-based bulk supermagnets

Michael R. Koblischka, Alexander Wiederhold, Miryala Muralidhar, K. Inoue, Thomas Hauet, Bruno Douine, Kevin Berger, Masato Murakami, Uwe Hartmann

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

A series of disk-shaped, bulk MgB₂ superconductors (sample diameter 20 mm, reaction temperatures ranging between 750 °C and 950 °C) was prepared to improve the performance for superconducting supermagnets. These samples were characterized by magnetic and electric measurements in fields up to 7 T and at various temperatures 10 K <T< 35 K. The irreversibility lines, the current densities, the resistance, and the achievable trapped fields were determined. To analyze the data, a scaling of the flux pinning forces, F_p = j_c × B, was performed. The different scaling behavior of the samples prepared at low- and high-reaction temperatures is discussed, considering the achieved microstructures.

Original language	English
Article number	6971268
Journal	IEEE Transactions on Magnetics
Volume	50
Issue number	11
DOIs	https://doi.org/10.1109/TMAG.2014.2323995
Publication status	Published - 2014 Nov 1

Keywords

Flux pinning forces
MgB
supermagnets
trapped fields

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/TMAG.2014.2323995

Cite this

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title = "Development of MgB2-based bulk supermagnets",

abstract = "A series of disk-shaped, bulk MgB2 superconductors (sample diameter 20 mm, reaction temperatures ranging between 750 °C and 950 °C) was prepared to improve the performance for superconducting supermagnets. These samples were characterized by magnetic and electric measurements in fields up to 7 T and at various temperatures 10 K <T< 35 K. The irreversibility lines, the current densities, the resistance, and the achievable trapped fields were determined. To analyze the data, a scaling of the flux pinning forces, Fp = jc × B, was performed. The different scaling behavior of the samples prepared at low- and high-reaction temperatures is discussed, considering the achieved microstructures.",

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AU - Koblischka, Michael R.

AU - Wiederhold, Alexander

AU - Muralidhar, Miryala

AU - Inoue, K.

AU - Hauet, Thomas

AU - Douine, Bruno

AU - Berger, Kevin

AU - Murakami, Masato

AU - Hartmann, Uwe

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