alexa Raman Spectroscopy of Iron Oxide of Nanoparticles (Fe3O4)
ISSN: 2169-0022

Journal of Material Sciences & Engineering
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Research Article

Raman Spectroscopy of Iron Oxide of Nanoparticles (Fe3O4)

Panta PC1,2* and Bergmann CP1

1Ceramic Materials Laboratory, Federal University of Rio Grande do Sul, Av. Osvaldo Aranha 99, sl. 705C, CEP 90035-190, Porto Alegre, RS, Brazil

2Department of Chemistry and Physics, University of Santa Cruz do Sul, Santa Cruz do Sul, Brazil, Av. Independência 2293, CEP 96815-900, Santa Cruz do Sul, Brazil

*Corresponding Author:
Panta PC
Ceramic Materials Laboratory
Federal University of Rio Grande do Sul
Av. Osvaldo Aranha 99, sl. 705C
CEP 90035-190, Porto Alegre
RS, Brazil
Tel: 555133039000
E-mail:
[email protected]

Received Date: October 05, 2015; Accepted Date: December 01, 2015; Published Date: December 10, 2015

Citation: Panta PC, Bergmann CP (2015) Raman Spectroscopy of Iron Oxide of Nanoparticles (Fe3O4). J Material Sci Eng 5:217. doi:10.4172/2169-0022.1000217

Copyright: © 2015 Panta PC, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Nanoparticles of iron oxide (Fe3O4) were obtained by Coprecipitation with synthesis time of 30, 60 and 90 min. The morphology of the samples was investigated by scanning electron microscopy (SEM) and structural characteristics were obtained by X-ray diffraction (XRD). The crystallite size was calculated from the spectrum X-ray diffraction with the application of the Scherrer equation and Winfit. The crystallite size varied from 4.6 to 14.4 nm when calculated by Scherrer equation and when calculated by the single line ranged from 7.5 to 22.3 nm Winfit. The degree of graphitization was studied by Raman spectroscopy where spectrums were analyzed with different lasers: 514 nm (0.75 mW power used) and 785 nm (1.2 mW power used). The dominant structures of the spectra are in 215, 276, 398, 487, 654 and 1300 cm-1 when using the laser 514 nm. The spectrum produced with laser 514 nm is characteristic peak of magnetite in 654 cm-1. The spectrum produced by laser 785 nm has a peak at 670 cm-1, shifted relative to the laser 514 nm. The spectrum generated by laser 785 nm peaks characteristic of maghemite encountered due to possible oxidation of the sample caused by the high power laser. The experimental results were satisfactory and are according to the survey.

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