Raman spectroscopic studies on Sb nanoparticles in SiO2 matrix prepared by rf-cosputtering technique

Microstructure and electrical properties of co-sputtered Cu embedded amorphous SiC

“…The increase of the Cu NPs size with increasing Cu% indicates that higher Cu target power not only affect the Cu% but also increase the Cu NPs sizes. The increase of Cu NPs size with Cu target power aligns with reported works in relation to metal depositions using magnetron sputtering [21,22]. Generally speaking, high target power induces sputtered species with high energy and thus high mobility on the substrate which subsequently form large particles.…”

Study of structural and optical properties of InSb-doped SiO2 thin films

“…This result indicates that the remaining In atoms are not in a Raman-active form in the films. Furthermore, based on the width of these bands (8 cm À1 for the A 1g mode) and on the absence of frequency shift from the energy of these vibrations in the crystalline Sb, we argue that the Sb crystallites are larger than 5 nm [18]. For the four-hour heattreatment (LTA900), the amplitude of the Raman bands increased from that observed after a 1-h annealing (LTA900-1H).…”

“…4(b)). We attribute this band to Sb clusters [18] or to amorphous antimony dispersed in the matrix. In the RTA process, the amplitude of the band at 430 cm À1 , associated with the silica matrix network Si-O-Si bending vibrations [19], decreases in proportion as the annealing temperature increases.…”

“…4(b)), two peaks reveal the predominance of crystalline structures. These peaks at 115 and 152 cm À1 are, respectively, assigned to the first-order E g and A 1g modes of c-Sb [18]. This result indicates that the remaining In atoms are not in a Raman-active form in the films.…”

Radial vibration of ultra-small nanoparticles with surface effects

“…Nanoparticles have attracted more and more attentions in the past decades due to their unique properties and extensive applications in quantum dots, transducers, optics process, and even oil recovery etc [1][2][3][4]. As many of the functions are involved in their dynamical behaviors, nanoparticles' vibrations have been investigated widely.…”