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Fig. 7 | Earth, Planets and Space

Fig. 7

From: Remanence cycling of 0.6–135 µm magnetites across the Verwey transition

Fig. 7

Zero-field warming curves of saturation IRM produced by a field of 5 T at 10 K for six annealed crushed magnetites. Compared to the results for unannealed samples (Fig. 6), the remanence demagnetizes more between 10 and 100 K, with an inflection point at 50 K; the remanence loss at TV is larger and more sudden; and the remanence decreases further above TV for most grain sizes. There is substantial recovery of remanence after recooling to 10 K for the larger grain sizes

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