Study on Effect of Temperature Gradient of TSDC Measuring System

Abstract

In this letter, effect of temperature gradient of thermally stimulated depolarization current (TSDC) is investigated, by using electrode systems with different structure, which are asymmetric and symmetric electrodes, TSDC and temperature difference measurement results show that, the temperature gradient caused by uneven heating condition of asymmetric electrode system will affect the reliability and accuracy of TSDC measurement. That is: under the symmetric electrodes system, a complete TSDC curve consists of two distinct peaks named α peak and ρ peak, while under the asymmetric electrode system, ρ peak can not be observed.