Sökning: "Hina Ashraf"

Hittade 1 uppsats innehållade orden Hina Ashraf.

  1. 1. Investigation of the Symmetries of the Phonons in 4H and 6H-SiC by Infrared Absorption and Raman Spectroscopy

    Uppsats för yrkesexamina på grundnivå, Institutionen för fysik, kemi och biologi

    Författare :Hina Ashraf; [2005]
    Nyckelord :Raman spectroscopy; Silicon Carbide SiC ; IR absorption Spectroscopy; Phonon displacements; Lattice dynamic model LDM ; 4h-SiC; 6H-SiC; Polar modes in SiC;

    Sammanfattning : The goal of the project work has been to study the symmetry of the phonons in 4H and 6H-SiC for different measuring geometries by using two experimental techniques, Raman and infrared absorption (IR) spectroscopy, and a theoretical model. The Raman spectra were measured in different scattering configurations in order to obtain experimental data for detailed investigation of the phonon symmetries. LÄS MER