Neutron-scattering study of the dynamics of ammonium in different phases of halides of K1-x(NH4)(x)Hal mixed crystals

Natkaniec I; Smirnov LS; Shuvalov LA

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Neutron-scattering study of the dynamics of ammonium in different phases of halides of K1-x(NH4)(x)Hal mixed crystals

机译：K1-x（NH4）（x）Hal混合晶体卤化物不同相中铵动力学的中子散射研究

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The effect of temperature and the concentration of ammonium on the lattice parameters and the amplitude-weighted phonon density of states in mixed salts of ammonium potassium halides is studied by neutron powder diffraction and incoherent inelastic neutron scattering. It is found that at 10 K incoherent inelastic neutron scattering spectra show four different excitation modes of ammonium: two resonant excitations below the cutoff energy of the phonon density of states of potassium halide and two localized excitations above the cutoff energy. The high-energy localized modes correspond to translational and librational vibrations of NH4 ions in the crystal lattice. These modes are typical of ordered phases of ammonium halides. (c) 2005 Pleiades Publishing, Inc.

机译：通过中子粉末衍射和非相干非弹性中子散射研究了温度和铵浓度对卤化铵钾混合盐中晶格参数和态的振幅加权声子密度的影响。发现在10 K时非相干非弹性中子散射光谱显示出铵的四种不同激发模式：在卤化钾的声子密度状态的截止能以下的两个共振激发和在截止能以上的两个局部激发。高能局部模式对应于晶格中NH4离子的平移和自由振动。这些模式是卤化铵有序相的典型模式。（c）2005年Pleiades Publishing，Inc.

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《Crystallography reports》 |2005年第2期|共8页
作者
Natkaniec I; Smirnov LS; Shuvalov LA;
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正文语种 eng
中图分类晶体学;
关键词
DIPOLAR GLASS; ROTATIONAL EXCITATIONS; STATES; (NH4I)(X)(KI)(1-X); DIFFRACTION; TRANSITION; DIAGRAM; ALKALI;

机译：二元玻璃;旋转激发;状态;（NH4I）（X）（KI）（1-X）;衍射;过渡;图;碱;

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专利

1. Neutron-scattering study of the dynamics of ammonium in different phases of halides of K1-x(NH4)(x)Hal mixed crystals [J] . Natkaniec I, Smirnov LS, Shuvalov LA Crystallography reports . 2005,第2期

机译：K1-x（NH4）（x）Hal混合晶体卤化物不同相中铵动力学的中子散射研究
2. EXAFS Study on the Glassy State of K1-x(NH4)xI Mixed Crystals [J] . K. Yagi, K. Sakaue, V. A. Shuvaeva, Journal de Physique, IV: Proceedings of International Conference . 1997,第2aPta2期

机译：EXAFS研究K1-x（NH4）xI混合晶体的玻璃态
3. Mixed micelles of alkyltrimethylammonium halides - A small-angle neutron-scattering study [J] . Aswal VK., Goyal PS. Physica, B. Condensed Matter . 1998,第1期

机译：烷基三甲基卤化铵的混合胶束-小角中子散射研究
4. X-ray diffraction studies of crystal structures and phase transitions in K1−x(NH4)xCl mixed salts [C] . Batdemberel G., Fuess H., Munkhbaatar P., 2011 6th International Forum on Strategic Technology . 2011

机译：K 1-x （NH4） x Cl混合盐的晶体结构和相变的X射线衍射研究
5. The study of liquid solution and solid phase systems: I. Reactions and thermodynamics of alkyl halides. II. Structures and energetics of group 13-15 compounds. [D] . Kormos, Bethany Lyn. 2004

机译：液相和固相系统的研究：I.卤代烷的反应和热力学。二。 13-15组化合物的结构和能量。
6. Photoluminescence Study of the Photoinduced Phase Separation in Mixed-Halide Hybrid Perovskite CH3NH3Pb(BrxI1−x)3 Crystals Synthesized via a Solvothermal Method [O] . Baohua Zhang, Fuqiang Guo, Junjun Xue, -1

机译：溶剂热法合成混合卤化物杂钙钛矿CH3NH3Pb（BrxI1-x）3晶体中光诱导相分离的光致发光研究
7. Ammonium dynamics and structural phase transition in K1−x(NH4)xI mixed salts at 10 K [O] . I. Natkaniec, L. S. Smirnov 1996

机译：K1-X（NH4）Xi混合盐的铵动力学和结构相转变为10 k

Neutron-scattering study of the dynamics of ammonium in different phases of halides of K1-x(NH4)(x)Hal mixed crystals

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