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. 2014 May 15;7(5):3901–3918. doi: 10.3390/ma7053901

Figure 7.

Figure 7.

AC magnetic susceptibility for MgB2 formed from Runs 3 and 4 showing variation with applied magnetic field. At zero field Tc = 38.5 K for Run 3 and Tc = 38.0 K for Run 4. Vertical axes are the same scale. Note difference in AC susceptibility for Run 4 compared with Run 3.