A facile two-step hydrothermal route for the synthesis of γ-Fe2O3 nanocrystals and their magnetic properties
Source abstract
Abstract
This paper proposes a facile two-step hydrothermal route for the synthesis of maghemite (γ-Fe2O3) nanocrystals. The synthesis route included two steps: (i) hydrothermal synthesis of Fe3O4 nanocrystals, and (ii) hydrothermal oxidation of the Fe3O4 nanocrystals to their γ-Fe2O3 counterpart. Phase transition from γ-Fe2O3 to hematite was studied by in situ XRD; the γ-Fe2O3 nanocrystals exhibited enhanced phase transition temperature (>600 °C). The magnetization curves revealed that the γ-Fe2O3 nanocrystals showed ferromagnetic behavior with high saturation magnetization of 68 emu/g at room temperature.
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Research context
OpenAlex topics: Iron oxide chemistry and applications · Magnetic Properties and Synthesis of Ferrites · Nanoparticle-Based Drug Delivery
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