Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-23T07:25:29.375Z Has data issue: false hasContentIssue false
  • English
  • Français

Composition Influence on the Properties of Titanium-Doped Gamma Iron Oxide Nanoparticles Prepared by Laser Pyrolysis Method

Published online by Cambridge University Press:  01 February 2011

Ion Morjan ,
Rodica Alexandrescu ,
Florian Dumitrache ,
Ion Sandu ,
Monica Scarisoreanu ,
Lavinia Albu ,
Iuliana Soare ,
Ion Voicu ,
Bohumil David  and
Oldrich Schneeweiss
...Show all authors
Ion Morjan
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Rodica Alexandrescu
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Florian Dumitrache
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Ion Sandu
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Monica Scarisoreanu
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Lavinia Albu
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Iuliana Soare
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Ion Voicu
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Bohumil David
Affiliation:
Institute of Physics of Materials, AS CR, Brno, Czech Republic
Oldrich Schneeweiss
Affiliation:
Institute of Physics of Materials, AS CR, Brno, Czech Republic
Claudiu Fleaca
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Ernest Popovici
Affiliation:
Laboratory of Laser Photochemistry, National Institute for Lasers, Plasma and Radiation Physics, P.O.B MG-36, 077125 Bucharest, Romania
Victor Ciupina
Affiliation:
Ovidius University, Constanta, Romania
Get access

Abstract

The aim of this work is the structural and sensing characterization of titanium-doped gamma iron oxide nanocomposites. These nanopowder materials were synthesized by the laser pyrolysis technique. It is based on the resonance between the emission of a CW CO2 laser line and the infrared absorption band of a gas (vapour) precursor. Basically, sensitised iron pentacarbonyl and titanium tetrachloride-based mixtures were used as gas-phase reactants. The compositional characterization of the synthesized nanostructures was performed by means of different analytical techniques. Introducing Ti in the Fe2O3 network in small quantities (< 1 %) seems to have little influence on titanium doped powder morphology (mean grain size ∼ 5nm) but increases the sensitivity of titanium doped iron oxide nanopowders with more then 20 % relatively to pure maghemite.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 872: Symposium J – Micro- and Nanosystems—Materials and Devices , 2005 , J13.5
Copyright
Copyright © Materials Research Society 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Varghese, O.K. and Grimes, C.A., J. Nanosci. Nanotech, 3, 277 (2003).Google Scholar
2 Kohl, D., J. Phys. D: Appl. Phys., 34, R125 (2001).Google Scholar
3 Cornell, R.M. and Schwertman, U., The Iron Oxides, VCHWeinheim, 1996, p.198 Google Scholar
4 Murad, E. and Bishop, J.L. “American Mineralogist”, 85, 716 (2000).Google Scholar
5 Helgason, O., Greneche, J.-M., Berry, F.J., Mørup, S. and Mosselmans, F., J. Phys. Condens. Matter 13, 10785 (2001).Google Scholar
6 Cannon, W.R., Danforth, S.C., Flint, J.H., Haggerty, J.S. and Marra, R.A., J. Am. Ceram. Soc. 65, 324 (1982).Google Scholar
7 Martelli, S., Mancini, A., Giorgi, R., Alexandrescu, R., Cojocaru, S., Crunteanu, A., Voicu, I., Balu, M. and Morjan, I., Appl. Surf. Sci., 353, 154 (2000).Google Scholar
8 Morjan, I., Alexandrescu, R., Soare, I., Dumitrache, F., Sandu, I., Voicu, I., Crunteanu, A., Vasile, E., Ciupina, V. and Martelli, S., Materials Science and Engineering C, 1020, 1 (2002).Google Scholar
9 Alexandrescu, R., Dumitrache, F., Morjan, I., Sandu, I., Savoiu, M., Voicu, I., Fleaca, C. and Piticescu, R., Nanotechnology 15, 537 (2004).Google Scholar
10 Alexandrescu, R., Appl. Surf. Sci., 106, 28 (1996).Google Scholar
11 Lewis, K.E., Golden, D.M., and Smith, G.P., J. Am. Chem. Soc., 106, 3905 (1984).Google Scholar
12 Cornell, R.M. and Schwermann, U., The iron oxides, VCH Publishers, 1999, chap. 7, p.130.Google Scholar
13 Nyquist, R.A. and Kagel, R.O., Infrared Spectra of Inorganic Compounds vol.4, Academic Pres Inc., 1997, p. 241.Google Scholar
14X'Pert HighScore Plus v2.0a from PANalytical; ICSD Databse FIZ Karlsruhe, release 2003/1, Germany.Google Scholar
15 Žák, T., “Confit for Windows 95” in: Miglierini, M. and Petridis, D. (Eds.), Mössbauer Spectroscopy in Materials Science, Kluwer Academic Publishers, Dordrecht, 1999, p.385.Google Scholar
16 Kneller, E., “Fine particle theory“ in: Berkowitz, A. E., Kneller, E. (eds.), Magnetism and Metallurgy, volume I, Academic Press, New York, 1969, p. 365.Google Scholar
17 Ron, M., “Iron-carbon and iron-nitrogen systems” in Cohen, R. L. (Ed.), Applications of Mössbauer spectroscopy, Vol. II, Academic Press, New York, 1980, p. 329.Google Scholar