Naslov
The effects of crystal size on the Raman spectra of nanophased CdSxSe1-x, TiO2, and GaAs

Autori
Ivanda, Mile ; Musić, Svetozar ; Gotić, Marijan ; Desnica, Uroš, V. ; Tonejc, Anđelka M. ; Bishof, T. ; Kiefer, Wolfgang

Izvornik
Functional materials (1027-5495) 6 (1999); 530-534

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Raman spectroscopy; nanophased materials; TiO2; GaAs; CdSxSe1-x

Sažetak
We report on the application of Raman scattering as a probe for the evolution of crystalline size and distribution of nanosized particles. Small physical dimensions of the nanosized particles affects on position of the low-frequency Raman (LFR) band of the acoustical modes and, through a relaxation of the q=0 selection rule, lead to shift and broading of the first order Raman line of the optical modes. Using the LFR mode, a methodology for particle size and particle distribution was discussed and tested on CdSxSe1-x and TiO2 nanocrystals. The results were compared with the grain size distribution obtained by small-angle neutron scattering (SANS) and high-resolution electron microscopy (HREM).

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Kemija

POVEZANOST RADA