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Optical far infrared properties of PtSb2

N. NIKOLIĆ1, S. S. VUJATOVIĆ2, T. IVETIĆ2, K. M. PARASKEVOPOULOS3, T. T. ZORBA3, O. S. ALEKSIĆ1, V. BLAGOJEVIĆ4, M. V. NIKOLIĆ1, P. M. NIKOLIĆ2,*

Affiliation

  1. Institute for Multidisciplinary Research, Kneza Višeslava 1, 11000 Belgrade, Serbia
  2. Institute of Technical Sciences of the Serbian Academy of Sciences and Arts, Knez Mihailova 35/IV, 11000 Belgrade, Serbia
  3. Physics Department, Solid State Section, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
  4. Faculty of Electrical Engineering, University of Belgrade, Bulevar Kralja Aleksandra 73, 11000 Belgrade, Serbia

Abstract

Far infrared reflection spectra measured at room temperature were used to investigate vibrational properties of PtSb2 single crystals. The experimental results were analyzed using a dielectric function taking into account the existence of plasmonionised impurity-phonon interactions. Together with strong coupling three infrared active lattice modes at about 143, 187 and 202 cm-1 were observed. These results were discussed with respect to calculated literature vibrational frequencies. Electrical properties of single crystal PtSb2 were also measured at room temperature.

Keywords

Pnictides, Far infrared reflectivity.

Citation

N. NIKOLIĆ, S. S. VUJATOVIĆ, T. IVETIĆ, K. M. PARASKEVOPOULOS, T. T. ZORBA, O. S. ALEKSIĆ, V. BLAGOJEVIĆ, M. V. NIKOLIĆ, P. M. NIKOLIĆ, Optical far infrared properties of PtSb2, Optoelectronics and Advanced Materials - Rapid Communications, 4, 5, May 2010, pp.668-670 (2010).

Submitted at: May 12, 2010

Accepted at: May 20, 2010