Raman study of solid ammonia at high pressures and low temperatures

被引：15

作者：

Kume, T ^{[1
]}

Sasaki, S ^{[1
]}

Shimizu, H ^{[1
]}

机构：

[1] Gifu Univ, Dept Elect & Elect Engn, Fac Engn, Gifu 5011193, Japan

来源：

JOURNAL OF RAMAN SPECTROSCOPY | 2001年 / 32卷 / 05期

关键词：

Diamond-anvil cell - High pressure - High-low - Lows-temperatures - Phase I - Raman measurements - Raman studies - Stability regions - Temperature phase - Triple points;

D O I：

10.1002/jrs.710

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

Raman measurements on solid ammonia were carried out at pressures up to 15 GPa and at temperatures down to 20 K by using a diamond anvil cell in order to determine the pressure-temperature phase diagram. From the changes in the Raman spectrum at the phase transition, the stability regions of phases I, II, III and IV were investigated. The triple point of phases I, II, and IV is suggested to exist around 1.1 GPa and 220 K. The Raman spectra observed in the solid phase IV at low temperatures demonstrated several new peaks, and provide the support for the recent proposal for its crystal structure. Copyright (C) 2001 John Wiley & Sons.

引用

页码：383 / 387

页数：5

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