Vibrational spectrum of magnesium hydride

被引：50
|
作者：
Santisteban, JR
Cuello, GJ
Dawidowski, J
Fainstein, A
Peretti, HA
Ivanov, A
Bermejo, FJ
机构：
[1] Comis Nacl Energia Atom, Ctr Atom Bariloche, RA-8400 Bariloche, Rio Negro, Argentina
[2] Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France
[3] CSIC, Inst Estructura Mat, E-28006 Madrid, Spain
[4] CONICET, RA-1033 Buenos Aires, DF, Argentina
来源：
PHYSICAL REVIEW B | 2000年 / 62卷 / 01期
关键词：
D O I：
10.1103/PhysRevB.62.37
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The vibrational spectrum of hydrogen atoms in magnesium hydride has been studied by means of inelastic-neutron and Raman-scattering experiments between 12 and 295 K. After careful evaluation of multiple scattering and multiphonon contributions, we provide a vibrational frequency spectrum up to 180 meV and the mean-square displacement of hydrogen atoms. The inelastic light scattering spectra of MgH2 powders show three Raman allowed modes (A(1g), B-1g, and E-g) and some smaller features that can be related with second-order and disorder-induced processes.
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页码：37 / 40
页数：4
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