Effect of maghemization on the magnetic properties of nonstoichiometric pseudo-single-domain magnetite particles - Almeida, TP; Muxworthy, AR; Kasama, T; Williams, W; Damsgaard, C; Frandsen, C; Pennycook, TJ; Dunin-Borkowski, RE (Geochemistry Geophysics Geosystems, 2015)