SPECTROSCOPIC STUDY OF PHASE-TRANSITIONS IN NH3-(CH2)4-NH3PBCL4

被引：8

作者：

ABID, Y

KAMOUN, M

DAOUD, A

ROMAIN, F

机构：

[1] ECOLE NATL INGN,ETAT SOLIDE LAB,SFAX 3038,TUNISIA

[2] CNRS,LASIR,F-94320 THIAIS,FRANCE

来源：

PHASE TRANSITIONS | 1991年 / 33卷 / 1-4期

关键词：

D O I：

10.1080/01411599108207723

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Raman spectra (5–3500 cm1) of polycrystalline samples of NH3(CH2)4NH3PbCl4. have been recorded at different temperatures between 100 and 300 K. A systematic temperature dependence study of the low frequencies v and half-widths Δv1/2 revealed a phase transition at about 200 K. This transition corresponds to an order-disorder mechanism involving NH3 torsional motions coupled with libration of organic chains. In this communication, we shall characterize this transition and discuss its dynamical aspect. © 1991, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：119 / 126

页数：8

共 6 条

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