Photothermoelectric Detection of Phase Transitions in Liquid Thermoelectrics

Abstract

The recently introduced photothermoelectric technique (PTE) was applied to detect first order phase transitions in some liquid thermoelectrics (LTE). The investigated samples were based on dodecanol mixed with tetradodecylammonium nitrate (TDAN) and tetrabutylammonium nitrate (TBAN). It was demonstrated that the Seebeck effect, produced by a LTE, is an useful tool for the detection of phase transitions in the very same material. Additional photopyroelectric (PPE) measurements suported the obtained results.

A Simplified Method Characterizing Magnetic Ordering Modulated Photo‐Thermoelectric Response in Noncentrosymmetric Semimetal Ca3Ru2O7

“…For instance, the antiferro‐paramagnetic phase transition of Cr 2 O 3 was successfully studied by PTE method by using liquid TE sensor. [ 6 ] The LTE sensor is located between the metal electrode and the sample. A thin layer of silver is deposited on the backside of the sample, forming the second electrode for the PTE signal.…”