Abstract
Microwave dielectric properties of aqueous solutions of barium nitrate are studied as a function of concentration at frequencies from 3.4 to 23.5 GHz and temperatures from 283 to 313 K. The following dielectric parameters of the solutions are determined: static dielectric constant εs, dielectric relaxation time τ, and enthalpy of activation of dielectric relaxation ΔH ++ε . In transfer from water to the solutions, the static dielectric constant decreases for all test solutions. Decreases in τ and ΔH ++ε are induced by the increasing mobility of water molecules in ion hydration shells. The ionic effect disappears as temperature increases.
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Original Russian Text © Z.A. Filimonova, A.S. Lileev, A.K. Lyashchenko, 2006, published in Zhurnal Neorganicheskoi Khinü, 2006, Vol. 51, No. 5, pp. 885–888.
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Filimonova, Z.A., Lileev, A.S. & Lyashchenko, A.K. Complex dielectric constant and relaxation parameters of aqueous solutions of barium nitrate. Russ. J. Inorg. Chem. 51, 819–822 (2006). https://doi.org/10.1134/S0036023606050238
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DOI: https://doi.org/10.1134/S0036023606050238