Fig. 6.
a Contours of the constant magnetic field plotted at 1, 5, 10, 50, 100 ppm intervals (real Lee-Whiting system). b Contours of the constant magnetic field plotted at 1, 5, 10, 50, 100 ppm intervals [real (NI)2/(NI)1 = 9/4 contracting system]
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