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ID 33899
file
creator
Paik, Biswajit
Michigoe, Akitaka
NDC
Physics
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.
journal title
Applied Physics Letters
volume
Volume 100
issue
Issue 15
start page
151911
date of issued
2012
publisher
American Institute of Physics
issn
0003-6951
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
(c) 2012 American Institute of Physics
relation url
department
Institute for Advanced Materials Research
Graduate School of Integrated Arts and Sciences
Graduate School of Advanced Sciences of Matter



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