Infrared reflectivity spectra of η-Na1.3V2O5 in the charge disordered and ordered phase

We have measured the far-infrared reflectivity spectra of the sodium vanadium oxide η-Na1.3V2O5 polycrystals in the wide temperature (80–300 K) and frequency (150–1500 cm−1) range. Appearance of new phonon oscillators, phonon oscillator mode splitting and step-like shift of TO and LO frequencies at low temperatures are correlated with the charge-ordering phase transition, which takes place at about 120 K in this vanadium oxide.


Published in:
The European Physical Journal B, 65, 1-4
Year:
2008
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 Record created 2008-10-29, last modified 2018-09-13

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