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Temperature dependences of FC magnetization for NPs with t m= 1–24 h, compared to those for the as-prepared sample, under an applied field of 50 Oe.
M(H) curves and the plots of H/M versus M 2 for two representative NP samples with (a, b) t m = 1 h, and (c, d) t m = 3 h.
−ΔS m(T) data for NPs with (a) t m = 1 and 3 h, (b) t m = 6 and 9 h, and (c) t m = 12 and 24 h under an applied field interval of 15 kOe. The inset shows − ΔS m(T) for the t m = 0 h sample.
Mn K-edge XAFS spectra for representative LCM NPs with t m = 0, 1, 12, and 24 h compared to those of MnO2 and Mn2O3.
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