• Infrared spectra of (NH4)2BeF4

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    • Keywords


      Infrared spectrum; (NH4)2BeF4

    • Abstract


      The infrared spectra (4000-250 cm−1) of (NH4)2BeF4 powder have been recorded at ∼300K (paraelectric phase) and 120K (ferroelectric phase). Observed bands have been consistently attributed to different internal modes of NH4+ and BeF4−2 ions; a few bands also arise due to combination of these modes. The frequencies of librational modes of NH4+ and BeF4−2 ions have been estimated to be ∼370 and ∼100 cm−1, respectively, from combination modes.

    • Author Affiliations


      Y S Jain1

      1. Department of Physics, Aligarh Muslim University, Aligarh - 202 001
    • Dates

  • Journal of Chemical Sciences | News

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