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Article Dans Une Revue IEEE Transactions on Magnetics Année : 2014

Development of MgB2-based, bulk supermagnets

Résumé

A series of disk-shaped, bulk MgB2 superconductors (sample diameter up to 40 mm, reaction temperatures ranging between 750 °C and 950 °C) was prepared in order 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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Dates et versions

hal-00992071 , version 1 (16-05-2014)

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Michael Rudolf Koblischka, Alex Wiederhold, Muralidhar Miryala, Kazuo Inoue, Thomas Hauet, et al.. Development of MgB2-based, bulk supermagnets. IEEE Transactions on Magnetics, 2014, 50 (11), pp.9000504. ⟨10.1109/TMAG.2014.2323995⟩. ⟨hal-00992071⟩
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