Morphological and magnetic properties of the hydrothermally prepared α-Fe2O3 nanorods

α-Fe2O3 nanorods were synthesized via hydrothermal method. X-ray powder diffraction revealed the formation of rhombohedral α-Fe2O3 single crystal phase with fiber texture. Scanning and transmission electron micrographs analyses showed that the rhombohedral α-Fe2O3 has nanorods in shape with diameter...

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Bibliographic Details
Published in:Materials chemistry and physics 2014-10, Vol.147 (3), p.1037-1041
Main Authors: Hadia, N.M.A., García-Granda, Santiago, García, José R., Martínez-Blanco, D., Mohamed, S.H.
Format: Article
Language:English
Subjects:
Chemical synthesis
EDAX
Electron microscopy
Magnetometer
Oxides
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Summary:α-Fe2O3 nanorods were synthesized via hydrothermal method. X-ray powder diffraction revealed the formation of rhombohedral α-Fe2O3 single crystal phase with fiber texture. Scanning and transmission electron micrographs analyses showed that the rhombohedral α-Fe2O3 has nanorods in shape with diameters of 40–85 nm and lengths of 150–45,000 nm. Isothermal magnetization vs. applied magnetic field curves measured at room and liquid nitrogen temperatures displayed a variation on magnetic ordering: from weak ferromagnetism at room temperature to not hysteretic behavior at liquid nitrogen temperature that is well described by a Langevin function. Moreover, the zero field cooling-field cooling curves under applied magnetic field of 100 Oe confirms the decreasing of Morin temperature transition due to nanometric size of the samples. [Display omitted] •The structural and magnetic properties of α-Fe2O3 nanorods are examined.•Rietveld and Harris texture indicated the [001] is preferentially oriented.•The magnetic characterization evidenced the presence of hematite α-Fe2O3.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2014.06.056