Napredna pretraga

Pregled bibliografske jedinice broj: 74903

Raman light-to-vibration coupling coefficient of v-SiO2 in spectral interval range up to 600 cm(-1)


Ivanda, Mile; Kiefer, Wolfgang; Mariotto, Gino
Raman light-to-vibration coupling coefficient of v-SiO2 in spectral interval range up to 600 cm(-1) // Solid State Communications, 117 (2001), 7; 423-428 (međunarodna recenzija, članak, znanstveni)


Naslov
Raman light-to-vibration coupling coefficient of v-SiO2 in spectral interval range up to 600 cm(-1)

Autori
Ivanda, Mile ; Kiefer, Wolfgang ; Mariotto, Gino

Izvornik
Solid State Communications (0038-1098) 117 (2001), 7; 423-428

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

Ključne riječi
Phonons. Order-disorder effects. Neutron scattering. Inelastic light scattering.

Sažetak
Raman and inelastic neutron spectra of vitreous silica were compared in order to derive the Raman light-to-vibration coupling coefficient C(v) in the spectral interval between 10 and 600 cm(-1). C(v) shows different frequency dependences in different spectral regions: between 30 and 110 cm(-1), C(v) proportional to v; between 110 and 450 cm(-1), C(v) is constant; and finally, between 450 and 550 cm(-1), C(v) sharply decreases. The results are discussed in the frame of the existing models for the vibrational excitations in vitreous silica. The crossover frequency of C(v) at similar to 110 cm(-1) is interpreted as the onset of phonon localization in the sense of Ioffe-Regel rule.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
00980303

Ustanove
Institut "Ruđer Bošković", Zagreb

Autor s matičnim brojem:
Mile Ivanda, (135746)

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


Uključenost u ostale bibliografske baze podataka:


  • Chemical Abstracts