SHIFT OF THE BOSON PEAK IN RAMAN-SPECTRUM OF SILICA PREPARED FROM GELS

被引：4

作者：

CHMEL, A

MAZURINA, EK

SHASHKIN, VS

机构：

来源：

SOLID STATE COMMUNICATIONS | 1991年 / 78卷 / 03期

关键词：

D O I：

10.1016/0038-1098(91)90278-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The appearance of so-called Boson peak in the low-frequency Raman spectrum of silica xerogel was observed after the heat treatment of specimens at T(a) = 1000-degrees-C. The evolution of the peak frequency and intensity as well as Brillouin scattering data give evidence of decreasing of structure correlation radius with increasing of T(a) with simultaneous growing of degree of ordering inside the vibrational modes localization units.

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页码：177 / 180

页数：4

相关论文

共 8 条

[1] LOW-FREQUENCY RAMAN-SCATTERING FROM DISORDERED OR HETEROGENEOUS MATERIALS [J].

BOUKENTER, A ;

CHAMPAGNON, B ;

DUVAL, E ;

ROUSSET, JL ;

ROSENBERG, HM .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1989, 59 (01) :125-131

[2]

GAEBNER JE, 1986, PHYS REV B, V34, P5696

[3] THE NATURE OF BOSON PEAK IN RAMAN-SCATTERING IN GLASSES [J].

MALINOVSKY, VK ;

SOKOLOV, AP .

SOLID STATE COMMUNICATIONS, 1986, 57 (09) :757-761

[4]

MARIOTTO G, 1988, J PHYS C SOLID STATE, V21, P797

[5] ELASTIC-MODULI OF SILICA-GELS PREPARED WITH TETRAETHOXYSILANE [J].

MURTAGH, MJ ;

GRAHAM, EK ;

PANTANO, CG .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1986, 69 (11) :775-779

[6] STRUCTURAL EVOLUTION AT LOW-TEMPERATURE OF FORMAMIDE MODIFIED SILICA XEROGELS [J].

ORCEL, G ;

PHALIPPOU, J ;

HENCH, L .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1988, 104 (2-3) :170-180

[7] GEL-TO-GLASS TRANSFORMATION OF SILICA - A STUDY BY LOW-FREQUENCY RAMAN-SCATTERING [J].

ROUSSET, JL ;

DUVAL, E ;

BOUKENTER, A ;

CHAMPAGNON, B ;

MONTEIL, A ;

SERUGHETTI, J ;

DUMAS, J .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1988, 107 (01) :27-34

[8] LOW-FREQUENCY RAMAN-SPECTROSCOPY OF ALKALI BORATE GLASSES [J].

SOPPE, W ;

EBENS, W ;

DENHARTOG, HW .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1988, 105 (03) :251-257