File Name : supplementry_fig_1.tif

Caption : histogram and log-normal fit of single cores distribution determined by tem for the
c71, b47, and d40 samples.

File Name : supplementry_fig_2.tif

Caption : m ̈ossbauer spectra for (a) sample b47 and (b) sample d40 after various aging times of
exposure to air.


File Name : supplementry_fig_3.tif

Caption : (a) saxs curves, and (b) normalized zfc/fc curves of the fresh sample and after 6months from preparation for the c71 sample.