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

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Abstract

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.

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Authors and Affiliations

  1. Center for Solid State Physics and New Materials, Institute of Physics, Pregrevica 118, 11080, Belgrade, Serbia

    Z. V. Popović, D. M. Đokić & Z. Dohčević-Mitrović

  2. Materials Design and Characterization Laboratory, Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan

    M. Isobe & Y. Ueda

Authors
  1. Z. V. Popović
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  2. D. M. Đokić
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  3. Z. Dohčević-Mitrović
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  4. M. Isobe
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  5. Y. Ueda
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Correspondence to Z. V. Popović.

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Popović, Z.V., Đokić, D.M., Dohčević-Mitrović, Z. et al. Infrared reflectivity spectra of η-Na1.3V2O5 in the charge disordered and ordered phase. Eur. Phys. J. B 65, 1–4 (2008). https://doi.org/10.1140/epjb/e2008-00329-0

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  • DOI: https://doi.org/10.1140/epjb/e2008-00329-0

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