Some aspects of phase transitions control by thermoelectric method

To reach phase transitions (both for the 1st and the 2nd types) only small temperature difference is required. The temperature changes are about fractions or units of degrees. A thermoelectric heat pump is an ideal instrument for a temperature management of an object for phase transition control, and gives a possibility to extract or to introduce very small quantities of heat. In the conditions of the thermoelectric control of phase transitions the coefficient of cooling and the heating coefficient can reach the values much more than 1. Three aspects discussed in the paper: 1. Possible physical problems that could be solved by the thermoelectric control of phase transitions. They are connected with changes of resistance, optical, magnetic and dielectric behaviors of materials (the 2nd type of phase transition) and with the changes of aggregative state of materials (the 1st type of phase transition). 2. The thermoelectric method as an instrument for investigation of material properties near the transition point. 3. Description of instrument for investigation of phase transition in ferroelectrics.