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.

引用

页码：37 / 40

页数：4

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