Influence of a glass matrix on acoustic phonons confined in microcrystals

被引：59

作者：

Ovsyuk, NN ^{[1
]}

Novikov, VN ^{[1
]}

机构：

[1] RUSSIAN ACAD SCI,INST AUTOMAT & ELECTROMETRY,NOVOSIBIRSK 630090,RUSSIA

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.53.3113

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of a glass matrix on the spheroidal and torsional vibrational modes of microcrystals embedded into the matrix is analyzed. The low-frequency Raman scattering data are used to show that the influence of the matrix on the frequencies of the acoustic phonons confined in the microcrystals is significant even if Lame's constants lambda and mu and mass densities of a microcrystal and a matrix are quite different from each other. It was found that surface vibrations arise as microcrystals are embedded in a matrix. These vibrations are caused by the restoring force which limits the free rotation of microcrystals. Most likely, just these vibrations take part in the low-frequency Raman scattering described in a number of papers.

引用

页码：3113 / 3118

页数：6

共 12 条

[1] LOW-TEMPERATURE HEAT CAPACITY OF VITREOUS GERMANIA [J].

ANTONIOU, AA ;

MORRISON, JA .

JOURNAL OF APPLIED PHYSICS, 1965, 36 (06) :1873-&

[2] FAR-INFRARED AND RAMAN VIBRATIONAL TRANSITIONS OF A SOLID SPHERE - SELECTION-RULES [J].

DUVAL, E .

PHYSICAL REVIEW B, 1992, 46 (09) :5795-5797

[3] VIBRATION EIGENMODES AND SIZE OF MICROCRYSTALLITES IN GLASS - OBSERVATION BY VERY-LOW-FREQUENCY RAMAN-SCATTERING [J].

DUVAL, E ;

BOUKENTER, A ;

CHAMPAGNON, B .

PHYSICAL REVIEW LETTERS, 1986, 56 (19) :2052-2055

[4] LOW-FREQUENCY RAMAN-SCATTERING FROM SMALL SILVER PARTICLES EMBEDDED IN SIO2 THIN-FILMS [J].

FUJII, M ;

NAGAREDA, T ;

HAYASHI, S ;

YAMAMOTO, K .

PHYSICAL REVIEW B, 1991, 44 (12) :6243-6248

[5] LOW-FREQUENCY RAMAN-SCATTERING ON SURFACE VIBRATIONAL-MODES OF MICROCRYSTALS [J].

MALINOVSKY, VK ;

NOVIKOV, VN ;

SOKOLOV, AP ;

DODONOV, VG .

SOLID STATE COMMUNICATIONS, 1988, 67 (07) :725-729

[6]

OVSYUK NN, 1988, JETP LETT+, V48, P678

[7]

OVSYUK NN, 1988, JETP LETT+, V47, P298

[8]

OVSYUK NN, 1993, JETP LETT+, V57, P387

[9] MEDIUM-RANGE ORDER IN GLASSES - COMPARISON OF RAMAN AND DIFFRACTION MEASUREMENTS [J].

SOKOLOV, AP ;

KISLIUK, A ;

SOLTWISCH, M ;

QUITMANN, D .

PHYSICAL REVIEW LETTERS, 1992, 69 (10) :1540-1543

[10] ELECTRON-PHONON INTERACTIONS AND EXCITONIC DEPHASING IN SEMICONDUCTOR NANOCRYSTALS [J].

TAKAGAHARA, T .

PHYSICAL REVIEW LETTERS, 1993, 71 (21) :3577-3580

← 1 2 →