Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1553398 | Superlattices and Microstructures | 2014 | 5 Pages |
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 Ã 105 erg/cm3 compared to bulk iron oxide.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Waleed E. Mahmoud, Faten Al-Hazmi, Fowzia Al-Noaiser, A.A. Al-Ghamdi, Lyudmila M. Bronstein,