Magnetite-like mixed-valence iron ferrimagnetic homohelical chains exhibiting spin canting, spin-flop and field induced SCM like behaviours

Abstract

In this work, an Fe₃O triangle based helical chain complex [Fe₃(μ₃-O)(μ-O₂CH)₆H₂O] was assembled in a solvothermal reaction. The complex was a rare polymeric complex bearing charge separation of Fe³⁺ and Fe^2.5+, in which the charge distribution was like that of magnetite. The valence distribution and polymeric nature result in various magnetism behaviours e.g., ferrimagnetism along the chain, canted antiferromagnetic order, spin-flop and field induced SCM like behavior at low temperature.