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Journal of Materials Science

, Volume 43, Issue 16, pp 5564–5568 | Cite as

Far infrared reflectance of sintered Zn2TiO4

  • M. V. Nikolić
  • N. Obradović
  • K. M. Paraskevopoulos
  • T. T. Zorba
  • S. M. Savić
  • M. M. Ristić
Article

Abstract

Zinc-titanate ceramics were obtained by initial mechanical activation in a high-energy planetary mill for 15 min followed by sintering at temperatures 900–1100 °C for 2 h. Room temperature far infrared reflectivity spectra for all samples were measured in the range 100–1200 cm−1. The same ionic oscillators were present in the measured spectra, but their intensities increased with the sintering temperature in correlation with the increase in sample density and microstructure changes. Optical parameters were determined for seven oscillators belonging to the spinel structure using the four-parameter model of coupled oscillators. Born effective charges were calculated from the transversal/longitudinal splitting.

Keywords

Rietveld Refinement MgAl2O4 Inverse Spinel Structure ZnCr2O4 Infrared Reflection Spectrum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The authors would like to express their gratitude to Dr. M. Mitric for X-ray measurements. This work was partially financed by the Ministry for Science of the Republic of Serbia through project 142011G and F 7/2 financed by the Serbian Academy of Sciences and Arts.

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • M. V. Nikolić
    • 1
  • N. Obradović
    • 2
  • K. M. Paraskevopoulos
    • 3
  • T. T. Zorba
    • 3
  • S. M. Savić
    • 2
  • M. M. Ristić
    • 2
  1. 1.Institute for Multidisciplinary ResearchBelgradeSerbia
  2. 2.Institute of Technical Sciences of SASABelgradeSerbia
  3. 3.Department of Physics, Solid State SectionAristotle UniversityThessalonikiGreece

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