Structure and dynamics of crystal alpha-modification of potassium biiodate

被引：5

作者：

Barabash, A

Baran, J

Gavrilko, T

Eshimov, K

Puchkovskaya, G

Ratajczak, H

机构：

[1] UKRAINIAN ACAD SCI,INST PHYS,UA-252650 KIEV,UKRAINE

[2] POLISH ACAD SCI,INST LOW TEMP & STRUCT RES,PL-50950 WROCLAW 2,POLAND

来源：

JOURNAL OF MOLECULAR STRUCTURE | 1997年 / 404卷 / 1-2期

关键词：

infrared spectroscopy; hydrogen bonding; phase transition; ferroelectric; potassium biiodate;

D O I：

10.1016/S0022-2860(96)09380-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

FT-IR (4000-400 cm(-1)) and FIR (400-10 cm(-1)) spectra of alpha-modification of acid potassium iodate (alpha-KIO3 . HIO3) were measured in the paraelectric (at 300-220 K) and ferroelectric (at 223-20 K) phases. FIR spectra of the ferroelectric phase were found to exhibit doublet structure of many bands while FT-IR spectra mainly remain invariable. The results are in good agreement with the order-disorder mechanism of ferroelectric phase transition connected with localization of the proton within a strong hydrogen bond. (C) 1997 Elsevier Science B.V.

引用

页码：187 / 191

页数：5

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[2]

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[3]

Novak A., 1974, Large Molecules, P177, DOI [DOI 10.1007/BFB0116438, 10.1007/BFb0116438]

[4]

PETROSYAN AM, 1983, KRISTALLOGRAFIYA+, V28, P915

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