Record number :
1762391
Title of article :
Vibrational properties of impurity substituted α′-NaV2O5
Author/Authors :
Choi، نويسنده , , J and Musfeldt، نويسنده , , J.L and Rudko، نويسنده , , G.Yu and Jegoudez، نويسنده , , J and Revcolevschi، نويسنده , , A، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Pages :
6
From page :
167
To page :
172
Abstract :
We report the polarized infrared reflectance of Ti4+-doped α′-NaV2O5 and an analysis of the frequency dependent conductivity. Impurity incorporation allows us to resolve a number of new rung-polarized vibrational features due to local symmetry breaking. Variable temperature measurements both above and below the charge ordering transition indicate that the majority of zone-folding modes in Ti4+ substituted α′-NaV2O5 are a subset of those in the pristine material; minute new folded modes are observed at 46 (E∥a), 105 (E∥a), and 636 (E∥b) cm−1. We discuss our results in terms of disruption of the rung in the vicinity of the Ti4+ defect.
Keywords :
A. Ladders , C. Impurity substitution , D. Lattice dynamics
Journal title :
Solid State Communications
Journal title :
Solid State Communications
Serial Year :
2002
Link To Document :
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