Fluctuations of H2O molecule in crystalline HfF4•3H2O

被引：0
|
作者：
Dey, C. C. [1 ]
机构：
[1] Saha Inst Nucl Phys, Kolkata 700064, India
来源：
CHEMICAL PHYSICS LETTERS | 2011年 / 502卷 / 1-3期
关键词：
ANGULAR-CORRELATION SPECTROSCOPY; HAFNIUM;
D O I：
10.1016/j.cplett.2010.12.027
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：
Fluctuations of H2O molecules in the crystallized sample HfF4 center dot 3H(2)O have been studied in the temperature range 298-363 K by perturbed angular correlation (PAC) technique. In this crystal, apart from static components, time dependent relaxed component has been observed at these temperatures. The relaxation constants are found to increase with temperature up to 353 K following the Arrehenius equation and then decreases at 363 K where a chemical transformation in the sample has been observed. The time dependent relaxed component has been attributed to the fluctuation of H2O molecule in HfF4 center dot 3H(2)O. From the measured relaxation constants at different temperatures, activation energy for the H2O molecule has been found to be 0.15(1) eV. (C) 2010 Elsevier B.V. All rights reserved.
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页码：72 / 76
页数：5
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