On the role of crystal water in the conduction of synthetic borates |
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Authors: | N. D. Gavrilova O. V. Dimitrova A. M. Lotonov N. N. Mochenova V. K. Novik |
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Affiliation: | (1) Department of Physics of Polymers and Crystals, Department of Crystallography and Crystal Chemistry, and Department of General Physics and Wave Provesses; Faculty of Physics, Moscow State University, Leninskie gory, Moscow, 119992, Russia |
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Abstract: | The dispersion of permittivity and conductivity of crystals containing aqua complexes of different types (γ-HBO2, Ca2B6O11 · H2O, La[B5O8]OH)2 · 1.5H2O, and TRB6O9(OH)3(TR-Tb, Tu)) is studied for the first time. The compounds were synthesized under hydrothermal conditions at T = 270–280°C and P = 70–100 atm. Depending on the contained aqua complex, the compounds display different temperature and frequency behavior of the electric properties. The measurements are carried out in the frequency range from 10?2 to 106 Hz and in the temperature range from ?20 to 140°C. |
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