Logarithmic correction to the specific heat in tris-sarcosine calcium chloride

Specific heat experimental results in the 3x10^?2 ≦ | t | ≦5.5x10^?5 temperature range ($\text{t =}\text{(T?T}{}_{\mathrm{C}}\text{)}\text{T}{}_{\mathrm{C}}$) were fitted by means of the logarithmically corrected Landau theory of uniaxial dipolar ferroelectrics. The non-universal parameters b and t_O as well as the transverse and longitudinal correlation lengths at zero temperature are determined.