Hydrothermal Synthesis of CeO_{2} and Ce_{0.9}Fe_{0.1}O_{2} Nanocrystals

• Authors: M. Radović , Z. Dohčević-Mitrović , A. Golubović , B. Matović , M. Šćepanović , Z. Popović
• Languages of publication: EN

Abstracts

EN

Pure and 10 mol% Fe^{3+} doped CeO_2 nanocrystals were synthesized by hydrothermal method using two different basic solutions (NH_4OH and NaOH). All the samples were calcinated at 140°C and 200°C. The characterization of crystalline structure, vibrational and optical properties was performed using X-ray diffraction, Raman spectroscopy and spectroscopic ellipsometry. The obtained results showed that the Fe-doped samples are solid solutions with different size of nanocrystals, very dependent on the synthesis temperature and type of basic solution. The Raman measurements demonstrated electron molecular vibrational coupling and increase of oxygen vacancy concentration whereas doping provokes a small decrease of optical absorption edge in comparison with pure ceria.

Keywords

EN

81.16.Be; 61.05.C-; 78.30.-j; 78.67.Bf

Discipline

• 78.67.Bf: Nanocrystals, nanoparticles, and nanoclusters
• 78.30.-j: Infrared and Raman spectra(for vibrational states in crystals and disordered systems, see 63.20.-e and 63.50.-x, respectively; for Raman spectra of superconductors, see 74.25.nd)
• 61.05.C-: X-ray diffraction and scattering(for x-ray diffractometers, see 07.85.Jy; for x-ray studies of crystal defects, see 61.72.Dd, Ff)
• 81.16.Be: Chemical synthesis methods

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 116
• Issue: 4
• Pages: 614-617

Dates

published

2009-10

Contributors

author

M. Radović

• Institute of Physics, Center for Solid State Physics and New Materials, Belgrade, Serbia

author

Z. Dohčević-Mitrović

• Institute of Physics, Center for Solid State Physics and New Materials, Belgrade, Serbia

author

A. Golubović

• Institute of Physics, Center for Solid State Physics and New Materials, Belgrade, Serbia

author

B. Matović

• Institute of Nuclear Sciences Vinca, Belgrade, Serbia

author

M. Šćepanović

• Institute of Physics, Center for Solid State Physics and New Materials, Belgrade, Serbia

author

Z. Popović

• Institute of Physics, Center for Solid State Physics and New Materials, Belgrade, Serbia

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Identifiers

DOI

10.12693/APhysPolA.116.614