Abstract
Temperature dependent Raman scattering of the E2(low) and E2(high) modes of ZnO nanoparticle powder samples has been investigated. The dynamics exhibited by the ZnO nanoparticles, the E2 modes, follow single crystal like behavior but with strong cubic or/and quadratic anharmonicity by supporting additional channels for immediate lattice relaxation. The strong anharmonic character associated with the E2 modes reflects enhanced thermal conductivity of the ZnO nanoparticles. An anomalous variation in linewidth of the E2(low) mode is observed and is attributed to the superposition of the large displacement field, associated with the surface atoms of the nanoparticles and the lattice mode.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.