The anharmonic vibration of Li in lithium amide

Applied Physics Letters Volume 100 Issue 15 Page 151911- published_at 2012
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Title ( eng )
The anharmonic vibration of Li in lithium amide
Creator
Paik Biswajit
Michigoe Akitaka
Source Title
Applied Physics Letters
Volume 100
Issue 15
Start Page 151911
Abstract
A large amplitude rattling-type anharmonic vibration of Li is possible without guest-host type structure, as we report here for tetragonal LiNH2 crystal. The low temperature (0.4–300 K) specific heat capacity and Raman spectroscopy support the phonon model of site-specific Li activities governed by the symmetry of the potential energy distribution around the Li atoms in LiNH2, which yields the anharmonic Li3 vibration (optical) in one direction (either X or Y axis of the crystal), while the Li1 and Li2 atoms remain silent. Our finding may help to correlate ionic conductivity, thermal, and hydrogenation properties of LiNH2.
NDC
Physics [ 420 ]
Language
eng
Resource Type journal article
Publisher
American Institute of Physics
Date of Issued 2012
Rights
(c) 2012 American Institute of Physics
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 0003-6951
[DOI] 10.1063/1.3703586
[NCID] AA00543431
[DOI] http://dx.doi.org/10.1063/1.3703586