Effects of hydrogen ordering on the vibrational spectra of H(D) in HfV2H4-yDy

Skripov AV; Hempelmann R

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Effects of hydrogen ordering on the vibrational spectra of H(D) in HfV2H4-yDy

机译：氢有序化对HfV2H4-yDy中H（D）振动光谱的影响

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The vibrational spectra of H(D) in C15-type HfV2H4.0, HfV2D4.0 and HfV2H1.5D2.5 have been studied by means of inelastic neutron scattering above and below the temperature of H(D) ordering. It has been found that the hydrogen order-disorder transition leads to significant changes in the shape of the hydrogen vibrational spectra. These changes can be attributed (at least, partially) to a redistribution of hydrogen atoms between the interstitial sites with HfV3 and Hf2V2 coordination. The experimental data for the disordered phase of Hfv(2)H(4)(D-4) are consistent with the considerable isotope effect on the occupancy of the HfV3 sites by H(D) atoms. (c) 2006 Elsevier Ltd. All rights reserved.

机译：通过在H（D）有序温度上下的非弹性中子散射，研究了C15型HfV2H4.0，HfV2D4.0和HfV2H1.5D2.5中H（D）的振动谱。已经发现，氢的有序-无序转变导致氢振动谱的形状发生显着变化。这些变化可以（至少部分地）归因于具有HfV3和Hf2V2配位的间隙位置之间氢原子的重新分布。 Hfv（2）H（4）（D-4）的无序相的实验数据与H（D）原子对HfV3位置的占据有相当大的同位素效应是一致的。（c）2006 Elsevier Ltd.保留所有权利。

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来源
《Solid State Communications》 |2006年第10期|p. 435-438|共4页
作者
Skripov AV; Hempelmann R;
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作者单位

Russian Acad Sci, Urals Branch, Inst Met Phys, Ekaterinburg 620219, Russia;

Univ Saarland, D-66041 Saarbrucken, Germany;

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原文格式 PDF
正文语种 eng
中图分类固体物理学;
关键词
metal-hydrogen systems; phase transitions; neutron scattering; LAVES PHASE-COMPOUNDS; NEUTRON-SCATTERING; TEMPERATURE; TRANSITIONS; HYDRIDE; ZRV2HX;

机译：金属-氢系统;相变;中子散射;滞相化合物;中子散射;温度;转变;氢化物;ZRV2HX;

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Effects of hydrogen ordering on the vibrational spectra of H(D) in HfV2H4-yDy

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