Abstract
Dielectric-constant measurements in rubidium dihydrogen phosphate at frequencies from 20 Hz to 10 kHz, within an interval of about \ifmmode\pm\else\textpm\fi{}30 K from the Curie point, have been performed with a digital universal bridge. The relative accuracy of capacitance readings was better than 0.1%. Asymptotically close to ${T}_{c}$=145.90\ifmmode\pm\else\textpm\fi{}0.02 K and within an interval of 20 K above ${T}_{c}$, the data appear to follow reasonably well a Curie-Weiss law with logarithmic corrections, first predicted by Larkin and Khmel'nitskii for uniaxial ferroelectrics, and then change over gradually to normal Curie-Weiss behavior.
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