Long-range and short-range orderings in K4Fe4P5O20 with a natrolite-like framework
Abstract
K4Fe4P5O20 shows an interesting natrolite-like structure with a spin–tetrahedron lattice built by mixed valence Fe ions. Single crystals of the title compound are successfully grown by the flux method using KF as flux. Magnetic results combined from magnetic, heat capacity, and 57Fe Mössbauer