Gast ::
| Hauptseite > Publikationsdatenbank > A general and Eu specific perspective on lattice dynamics in pyrochlore and defect fluorite (Eu$_{1−x}$Nd$_{x}$)$_{2}$Zr$_{2}$O$_{7}$ |
| Hauptseite > Publikationsdatenbank > A general and Eu specific perspective on lattice dynamics in pyrochlore and defect fluorite (Eu$_{1−x}$Nd$_{x}$)$_{2}$Zr$_{2}$O$_{7}$ |
| Journal Article | FZJ-2015-05702 |
; ; ; ; ; ;
2015
Wiley-VCH
Weinheim
This record in other databases: 
Please use a persistent id in citations: doi:10.1002/pssb.201552076
Abstract: Lattice dynamics in pyrochlore and defect fluorite type (Euinline imageNdinline image)inline imageZrinline imageOinline image were investigated using nuclear inelastic scattering by the inline imageEu Mössbauer resonance for x = 0, 0.5, and 0.75 and using inelastic neutron scattering for x = 1. On the basis of the generalized density of phonon states obtained by inelastic neutron scattering, the vibrational entropy of the disordered defect fluorite Ndinline imageZrinline imageOinline image is found to be 12(3)% smaller than the one of the ordered pyrochlore counterpart. Accordingly, the loss of specific Zr–O coordination in the defect fluorite structure leads to a strong broadening of phonon modes. The Eu sublattice in both structure types was further characterized by thermodynamic quantities calculated using the Eu partial density of phonon states. The Eu framework is shown to be significantly softer than the other sublattices.
; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz
; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection
|
The record appears in these collections: |
PDF
PDF (PDFA)