ANGULAR-DISPERSION OF THE INTERNAL PHONON MODES IN FERROELECTRIC SODIUM-NITRITE

被引：11

作者：

CASTELLUCCI, E

SCHETTINO, V

机构：

[1] Istituto di Chimica Física, Università di Firenze

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1979年 / 91卷 / 02期

关键词：

D O I：

10.1002/pssb.2220910230

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The angular dispersion of the frequencies of the internal modes in ferroelectric sodium nitrite are determined by measuring the Raman spectra with observation of phonon propagating in the ab, ac and bc crystallographic planes. Using the exciton model and a resonant dipole–dipole interaction mechanism the angular dispersion is calculated resulting in good agreement with the experiment. The k dispersion curves are also calculated for points along the [100], [010], and [001] directions. Copyright © 1979 WILEY‐VCH Verlag GmbH & Co. KGaA

引用

收藏

页码：641 / 645

页数：5

相关论文

共 24 条

[1] INFRARED DIELECTRIC DISPERSION AND APPARENT IONIC CHARGES IN SODIUM NITRITE [J].

AXE, JD .

PHYSICAL REVIEW, 1968, 167 (02) :573-&

[2] TEMPERATURE-DEPENDENT VIBRATIONAL MODES IN SODIUM NITRITE [J].

BARNOSKI, MK ;

BALLANTYNE, JM .

PHYSICAL REVIEW, 1968, 174 (03) :946-+

[3] CRYSTAL STABILITY AND THE THEORY OF FERROELECTRICITY [J].

COCHRAN, W .

PHYSICAL REVIEW LETTERS, 1959, 3 (09) :412-414

[4] DIPOLAR COUPLING AND MOLECULAR VIBRATION IN CRYSTALS .I. GENERAL THEORY [J].

DECIUS, JC .

JOURNAL OF CHEMICAL PHYSICS, 1968, 49 (03) :1387-&

[5] INTERNAL OPTIC MODE DISPERSION CURVES AND FREQUENCY DISTRIBUTION FUNCTIONS IN DIPOLE COUPLED CRYSTALS - APPLICATIONS TO NAN3 AND KBRO3 [J].

FRECH, R .

JOURNAL OF CHEMICAL PHYSICS, 1974, 60 (06) :2354-2359

[6] OBLIQUE PHONONS IN UNIAXIAL CRYSTALS [J].

FRECH, R .

JOURNAL OF CHEMICAL PHYSICS, 1977, 67 (03) :952-956

[7] PHONON COUPLING AND ANGULAR DISPERSION IN BIAXIAL NANO2 [J].

HARTWIG, CM ;

WIENERAV.E ;

SMIT, J ;

PORTO, SPS .

PHYSICAL REVIEW B, 1971, 3 (06) :2078-&

[8] ANALYSIS OF TEMPERATURE-DEPENDENT PHONON STRUCTURE IN SODIUM NITRITE BY RAMAN SPECTROSCOPY [J].

HARTWIG, CM ;

WIENERAV.E ;

PORTO, SPS .

PHYSICAL REVIEW B, 1972, 5 (01) :79-&

[9] INTERMOLECULAR COUPLING OF VIBRATIONS IN MOLECULAR CRYSTALS - A VIBRATIONAL EXCITON APPROACH [J].

HEXTER, RM .

JOURNAL OF CHEMICAL PHYSICS, 1960, 33 (06) :1833-1841

[10]

KAY MI, 1970, J PHYS SOC JAPAN S, V28, P284