Solvent-free fabrication of ferromagnetic fe3o4 octahedra

Vilas G. Pol, Luke L. Daemen, Sven Vogel, George Chertkov

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

The controlled thermolysis of a presynthesized single precursor, Fe 3(CH3COO)6(OH)2CH3COO, in a closed reactor at 700 °C in an inert atmosphere produced ferromagnetic Fe3O4 octahedra without using solvent or catalyst. The octahedral shape with the 6-10 μm diameter of Fe3O4 is realized using field emission scanning electron microscope, and the composition, with an attached energy dispersive X-ray analyzer. The single-crystalline face-centered cubic structure of Fe3O4 octahedra is analyzed by X-ray diffraction measurements, further supported by Raman spectroscopy and transmission electron microscopy. The thermogravimetric analysis measured the amount of carbon present on the Fe3O 4 octahedra surfaces. The vibrating magnetometer corroborated ferromagnetic behavior of Fe3O4 octahedra with 150 Oe coercive force, 48 emu/g saturation magnetization, and 5 emu/g remnent magnetization.

Original languageEnglish
Pages (from-to)920-924
Number of pages5
JournalIndustrial and Engineering Chemistry Research
Volume49
Issue number2
DOIs
StatePublished - Jan 20 2010
Externally publishedYes

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