Quasi-one-dimensional magnetism of transition-metal oxide in Fe-based inorganic–organic hybrid nanosheets

Abstract

Low dimensionality provides an exciting research field for investigating quantum effects in functional materials. This work reports a novel quasi one-dimensional (1D) spin system configured in an inorganic–organic hybrid nanosheet. This nanosheet was solvothermally synthesized from FeCl₃, CH₃COOK, and ethylene glycol (C₂H₆O₂) as the solvent. The minimum chemical composition of this hybrid nanosheet is Fe₇O_4.77(C₂H₄O₂)₉, and the quantum magnetic properties arise from a quasi-1D spin system of Fe³⁺. Remarkably, this quasi-1D antiferromagnetism exhibits a critical temperature at 21 K, implying a relatively low magnetic fluctuation state compared with an ideal 1D spin system. The unique characteristics of this novel inorganic–organic hybrid nanosheet are therefore considered attractive for tailoring novel low-dimensional quantum devices.