Article ID Journal Published Year Pages File Type
1553398 Superlattices and Microstructures 2014 5 Pages PDF
Abstract
The performance of iron oxides, as a clinical tool for hyperthermia application, is strongly depending on their size and structural morphology. The precise control of the iron oxide shape and morphology offers a unique strategy to modify the strength of the dipolar interactions between iron oxide nanoparticles through the engineering of the magnetic surface anisotropy density. This article presents a novel recipe to synthesize γ-Fe2O3 nanocrystals with cubic morphology. The γ-Fe2O3 nanocubes were prepared through microwave assisted solvothermal technique. The use of 2,3-oxidosqualene results in iron oxide with cubic shape. The γ-Fe2O3 nanocubes were analyzed by X-ray diffractometer (XRD), transmission electron microscopy (TEM) and electron diffraction (SAED). The magnetic analysis revealed that the γ-Fe2O3 nanocubes have a saturation magnetization of 62 emu/g and magnetic surface anisotropy density Keff = 2 × 105 erg/cm3 compared to bulk iron oxide.
Related Topics
Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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