Pregled bibliografske jedinice broj: 74903
Raman light-to-vibration coupling coefficient of v-SiO2 in spectral interval range up to 600 cm(-1)
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)
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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
Citiraj ovu publikaciju:
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
