Different routes to charge disproportionation in perovskites-type Fe oxides

J. Matsuno, T. Mizokawa, A. Fujimori +3

Iron perovskites CaFeO_3 and La_{0.33}Sr_{0.67}FeO_3 show charge disproportionation, resulting in charge-ordered states with Fe^{3+}:Fe^{5+} =1:1 and =2:1, respectively. We have ma…