Abstract
Fe-glycolate wires with micrometer-scale lengths can be synthesized by the polyol process. Although the as-produced wires are in the paramagnetic state at room temperature, they are transformed into ferrimagnetic iron oxides and ferromagnetic metallic iron wires by reductive annealing. The shape of the wires is unchanged by reductive annealing, and it is possible to control the magnetic properties of the resulting wire-shaped ferri/ferromagnets by adjusting the annealing conditions. Consequently, the reductive annealing of polyol-derived Fe-glycolate wires is an effective material-processing route for the production of magnetic wires.
Highlights
Chemical synthesis methods have been applied to the development of functional nanomaterials
A reaction mediated by polyols, known as the polyol process, has been widely used to synthesize functional nanomaterials, such as metals, alloys, oxides, hydroxides and glycolates [6,7]
The transformation of the crystalline structure of these wires under a reducing atmosphere was studied by X-ray diffraction (XRD) measurements
Summary
Chemical synthesis methods have been applied to the development of functional nanomaterials. A reaction mediated by polyols, known as the polyol process, has been widely used to synthesize functional nanomaterials, such as metals, alloys, oxides, hydroxides and glycolates [6,7]. This process can be adapted to large-scale production, which is very important from a practical viewpoint [7]. We have synthesized paramagnetic Fe-glycolate wires with micrometer-scale lengths by the polyol process These wires consist of ferric ions complexed to chloride and diethylene glycolate ligands. Their transformation into magnetic iron metal and/or iron oxides under a reducing atmosphere is studied.
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