학술논문

Inelastic neutron scattering investigations of negative thermal expansion behavior in semiconductors and framework solids.
Document Type
Article
Source
Neutron News; Jan-Mar2014, Vol. 25 Issue 1, p34-37, 4p
Subject
PHONON scattering
INELASTIC neutron scattering
THERMAL expansion
CHEMICAL bond lengths
VIBRATIONAL spectra
Language
ISSN
10448632
Abstract
The article reports on several studies that determine the phonon density of states using inelastic neutron scattering measurements. It reviews examples of the results from the mesurements on a couple of negative thermal expansion (NTE) compounds. It points out that the distribution in bond-lengths is capable to produce additional features in the vibrational spectrum.