  Precise specific heat of barium titanate single crystals of different quality
has been measured with special attention to the temperature region above the
ferroelectric phase transition. It is shown that excess specific heat of the
multiaxial barium titanate in the paraelectric phase has a fluctuation nature
and its temperature dependence is in accordance with the theoretical
predictions of Levanyuk theory for multiaxial ferroelectrics. In this study the
first observation of fluctuation contribution to the specific heat is
presented.
