METHOD AND DEVICE FOR CAPTURING SIGNAL ARISING FROM NERNST-ETTINGHAUSEN EFFECT IN SUPERCONDUCTOR Russian patent published in 2023 - IPC H01L21/66 

FIELD: measuring equipment.

SUBSTANCE: invention relates to means for measuring the characteristics of semiconductor thermoelectric devices and ceramic high-temperature superconductors using the Nernst-Ettingshausen effect. The sample is placed between heat-conducting blocks on a holder placed inside a hollow body, hermetically sealed at the bottom. A temperature gradient is created by cooling a sample on one side to 77 K with liquid nitrogen poured into a housing placed in a magnetic field between magnets, and heating the sample on the other side to 300 K using an electric heating element. The temperature gradient is measured using a thermocouple. The potential differences arising from the Nernst-Ettingshausen effect are determined automatically in real time after the current supply to the magnet coils is stopped, and are converted into digital signals processed in the microcontroller and control module in real time with the output of time dependencies ∇T(t), u(t) to the interface module for promptly changing the course of measurements. Based on the obtained values ∇T the Nernst-Ettingshausen constant q is calculated and presented as a time dependence on the temperature gradient q(∇T, t).

EFFECT: increase in the accuracy of automatic measurements of the Nernst-Ettingshausen signal.

10 cl, 6 dwg