Differential thermal analysis:

• Figure 21.01 shows the typical photoview of Exstart TG/DTA7000 series and block diagram of DTA. The sample and inert reference (usually α -Alumina) are symmetrically placed in a furnace, which is typically controlled under a temperature program.

Figure 21.01: Photoview of EXSTAR TG/DTA7000 Series SII NanoTechnology and block diagram of DTA.

• The sample and the reference are made to undergo identical thermal cycles, i.e., by a continuous increase or decrease in temperature at a constant rate or by carrying out a series of determinations at different temperatures.

• During this process, any temperature difference between the sample and the reference is recorded using a differential thermocouple. Also, the sample temperature is detected from the thermocouple on the sample side.