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Titolo:
Low-temperature optical and thermal properties of AgI-based phosphate glasses
Autore:
Fontana, A; Rossi, F; Armellini, C; DAngelo, G; Tripodo, G; Bartolotta, A;
Indirizzi:
Univ Trent, Dipartimento Fis, I-38050 Trent, Italy Univ Trent Trent Italy I-38050 t, Dipartimento Fis, I-38050 Trent, Italy Univ Trent, Ist Nazl Fis Mat, I-38050 Trent, Italy Univ Trent Trent Italy I-38050 t, Ist Nazl Fis Mat, I-38050 Trent, Italy Ctr Fis Stati Aggregati, Consiglio Nazl Ric, I-38050 Trent, Italy Ctr Fis Stati Aggregati Trent Italy I-38050 zl Ric, I-38050 Trent, Italy Univ Messina, Dipartimento Fis, I-98166 Messina, Italy Univ Messina Messina Italy I-98166 artimento Fis, I-98166 Messina, Italy Univ Messina, Ist Nazl Fis Mat, I-98166 Messina, Italy Univ Messina Messina Italy I-98166 Nazl Fis Mat, I-98166 Messina, Italy Consiglio Nazl Ric, Ist Tecn Spettroscop, I-98122 Messina, Italy ConsiglioNazl Ric Messina Italy I-98122 troscop, I-98122 Messina, Italy
Titolo Testata:
PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICSELECTRONIC OPTICAL AND MAGNETIC PROPERTIES
fascicolo: 11-12, volume: 79, anno: 1999,
pagine: 2073 - 2080
SICI:
1364-2812(199911/12)79:11-12<2073:LOATPO>2.0.ZU;2-
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUPERIONIC GLASSES; LIGHT-SCATTERING; VITREOUS SILICA; MODES; SYSTEMS; RAMAN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Fontana, A Univ Trent, Dipartimento Fis, I-38050 Trent, Italy Univ Trent Trent Italy I-38050 ento Fis, I-38050 Trent, Italy
Citazione:
A. Fontana et al., "Low-temperature optical and thermal properties of AgI-based phosphate glasses", PHIL MAG B, 79(11-12), 1999, pp. 2073-2080

Abstract

Brillouin and Raman scattering measurements on (AgI)(x)(AgPO3)(1-x) glasses are compared with low-temperature specific heat measurements. The direct comparison of the Brillouin shift and the frequency of the boson peak maximum shows that these features have the same qualitative behaviours. In fact,a shift towards low frequency is observed with increasing AgI content fromx = 0 to x = 0.55, indicating a close relationship between Brillouin we have scattering (acoustic modes) and the boson peak. Correspondingly we have observed a shift to a lower temperature of the maximum C-p/T3.

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Documento generato il 25/11/20 alle ore 10:04:33