The Efficiency of Ideal Ferrielectric Energy Converter
  The article contains the calculation of the efficiency of ideal ferrielectric energy converter, the working body of which is ferrielectric and which converts the heat energy of low-potential water into the electric energy. Its operation is based on the sharp dependence of capacitivity of ferrielectric on the temperature of dielectric-ferrielectric structural phase transition in the vicinity of Curie temperature. 
M.D. Zviadadze, I.G. Margvelashvili, A.G. Kvirikadze, L.A. Zamtaradze,   A.I. Berdzenishvili
cond-mat.other