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Direct observation of spinodal decomposition in the magnetite-hercynite system by susceptibility measurements and transmission electron microscopy

Golla-Schindler, Ute; O'Neill, Hugh; Putnis, Andrew


The magnetic susceptibility and Curie temperatures Tc have been investigated for a series of synthetic samples with solid-solution compositions ranging from pure magnetite (Fe3O4) to hercynite (FeAl2O4). The determined Tc can be fitted by a straight line, which also fits the theoretical values for these end-members. With increasing hercynite concentration, susceptibility curves for one heating and cooling cycle become irreversible, indicating changes in the structural state of the samples...[Show more]

CollectionsANU Research Publications
Date published: 2005
Type: Journal article
Source: American Mineralogist
DOI: 10.2138/am.2005.1849


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