Structure and dynamics of ammonium halides under high pressure

被引：6

作者：

Kozlenko, DP ^{[1
]}

Savenko, BN

Glazkov, VP

Somenkov, VA

Hull, S

机构：

[1] Joint Inst Nucl Res, Frank Lab Neutron Phys, Dubna 141980, Moscow Region, Russia

[2] IV Kurchatov Atom Energy Inst, Russian Sci Ctr, Moscow 123182, Russia

[3] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

来源：

PHYSICA B-CONDENSED MATTER | 2000年 / 276卷

基金：

俄罗斯基础研究基金会;

关键词：

crystal structures; lattice dynamics; high pressure;

D O I：

10.1016/S0921-4526(99)01418-0

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The structures of ammonium halides ND4I and ND4Br have been studied by means of neutron diffraction at pressures up to 9 GPa. We found that the high-pressure phase V of ammonium halides has the same structure as the low-temperature phase III-tetragonal one with antiparallel ordering of ammonium ions. Vibrational spectra of NH4I have been studied at pressures up to 5 GPa. Libration and transverse optical mode frequencies as functions of pressure were obtained. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：226 / 227

页数：2

共 7 条

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