Lattice dynamics and Raman spectroscopy of ZnO:Mn crystals

Wojtek Gebicki 1Andrzej Mycielski Krzysztof Grasza 2

1. Warsaw University of Technology, Faculty of Physics, Koszykowa 75, Warszawa 00-662, Poland
2. Polish Academy of Sciences, Institute of Physics, al. Lotników 32/46, Warszawa 02-668, Poland

Abstract

Full density matrix functional calculations were performed to calculate structural properties and lattice dynamics of ZnO:Mn crystals. Wien2k and Phonon codes have been used. Both phonon dispersion curves and density of phonon states have been calculated. The phonon density of states has been calculated separately for Zn, Mn and O vibrations. The results of the calculations have been confronted with polarized Raman spectra. The symmetry of the Raman peaks assigned the Mn local vibrations has been identified and will be discussed. Fröhlich type resonant Raman scattering mechanism has been identified.

Related papers
  1. The influence of the PVT growth conditions on the SiC crystal shape
  2. Optical Characterisation of Bulk ZnO Crystals Grown by CVT
  3. Growth of SiC by PVT method with different sources of the cerium impurity, CeO2 or CeSi2
  4. The influence of growth atmosphere on the self-selection of the grains during ZnO crystal growth
  5. Synthesis of gallium nitride nanowires by Sublimation Sandwich Method
  6. Synthesis of aluminum nitride nanopowder; compare methods for determination of the grain size in nanopowders 
  7. Resonance Raman scattering and lattice dynamics of GaMnN crystals
  8. Light polarized resonant Raman spectra from individual carbon nanotubes
  9. Microscopy and spectroscopy techniques in characterization of thick GaN and Ga1-xMnxN layers grown by Sublimation Sandwich Method
  10. Single crystals of gallium nitride doped with gadolinium- synthesis and properties.
  11. ZnO homoepitaxial growth by Atomic Layer Epitaxy technique.
  12. Self-organized microstructure of TiO2-MnO
  13. Initial Stage of SiC Crystal Growth by PVT Method
  14. Preparation of the ZnO substrate surface
  15. Stability diagram for crystal growth from the vapor
  16. Magnetic properties of Fe doped SiC crystals
  17. Effect of the Annealing Atmosphere on the Quality of ZnO Crystal Surface
  18. Structure properties of bulk ZnO crystals
  19. ELECTRICAL AND OPTICAL PROPERTIES OF ZnO AND ZnO:Cr CRYSTALS, GROWN BY CVT METHOD
  20. Close-Spaced Crystal Growth and Characterization of BP Crystals
  21. CVT contactless growth of ZnO crystals
  22. GaN growth by Sublimation Sandwich Method
  23. Magnetotransport studies of Ga(Mn,Fe)N bulk crystals
  24. Studies of multiwall carbon nanotubes using Raman spectroscopy and AFM

Presentation: Poster at E-MRS Fall Meeting 2008, Symposium J, by Wojtek Gebicki
See On-line Journal of E-MRS Fall Meeting 2008

Submitted: 2008-05-30 16:57
Revised:   2009-06-07 00:48
Google
 
Web science24.com
© 1998-2018 pielaszek research, all rights reserved Powered by the Conference Engine