Neutron spectroscopy of aluminium trihydride

被引：13

作者：

Kolesnikov, AI

Adams, M

Antonov, VE

Chirin, NA

Goremychkin, EA

Inikhova, GG

Markushkin, YE

Prager, M

Sashin, IL

机构：

[1] RUTHERFORD APPLETON LAB, DIDCOT OX11 0QX, OXON, ENGLAND

[2] JOINT INST NUCL RES, FRANK LAB NEUTRON PHYS, DUBNA 141980, RUSSIA

[3] FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, INST FESTKORPERFORSCH, D-52425 JULICH, GERMANY

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1996年 / 8卷 / 15期

关键词：

D O I：

10.1088/0953-8984/8/15/004

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The lattice dynamics of alpha-AlH3 and alpha-AlD3 were studied by inelastic neutron scattering (INS). The hydrogen optic modes in the INS spectra were shown to form a broad structured band which exhibited an harmonic isotopic behaviour. In contrast, the low-energy part of the phonon spectra, formed mainly by the vibrations of the metal atoms, showed pronounced anharmonicity. The temperature dependence of the AlH3 heat capacity derived from the MS data agrees with the available experimental dependence at 50-150 K.

引用

页码：2529 / 2538

页数：10

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