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On the origin of the sharp, low-field pinning force peaks in MgB2 superconductors

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Academic year: 2021

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Figure

FIG. 1. Data of the MgB 2 SPS sample. (a) j c as a function of the applied field, μ 0 H ext , in the temperature range 5 K ≤ T ≤ 35 K
FIG. 2. [(a)–(d)] Pinning forces vs applied field for samples: (a) SPS, (b) S775, (c) S850, and (d) S950
FIG. 4. Pinning force scaling, F p /F p,max vs the reduced field, h = H a /H irr for sample S775 (black line)

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