Abstract
The theoretically predicted appearance of the temperature difference between the opposite sides of charging or discharging capacitors was observed for the first time. The capacitor of ferroelectric PbMg1/3Nb2/3O3 crystal with Ni electrodes was charged applying the field to E = 106 V/m with the time constant ≈ 10−5 s. The temperature difference at 300 K reached ≈ 10−4 K. The theoretical analysis of a "generalized Peltier effect" at the boundary of two arbitrary materials is done and it is shown that the experimental result can be considered as a "dieletric Peltier effect".