A thermal radiation detector employing the Nernst effect in Cd3As2-NiAs

Abstract

The material parameters that are important in the detection of thermal radiation by means of the Nernst effect are first considered. Then a simple treatment of the thermomagnetic properties of an aligned two-phase system is given and applied to eutectics based on the semiconductor Cd3As2. The results of experiments on radiation detection using the Cd3As2-NiAs eutectic are reported. These results indicate that the NiAs concentration is too small to have any beneficial effect other than that of giving added mechanical strength. Nevertheless it appears that a Cd3As2-NiAs detector operating at room temperature in a magnetic field of 0·7 tesla is about three times as sensitive as one made from InSb-NiSb having the same electrical resistance and response time.

Cadmium arsenide crystals as nernst radiation detectors

“…D.R. LOVETT Introduction A Cd A s -NiAs eutectic has already been reported as a suitable 3 2 material for u s e in a thermal radiation detector based on the Nernst effect (1).…”

Revealing large room-temperature Nernst coefficients in 2D materials by first-principles modeling

“…While they may exhibit lower performance compared to photoconductors, they operate efficiently across a broad spectrum of wavelengths and do not require refrigeration. 38 The examination of the Nernst effect in 2D materials has predominantly centered on the anomalous Nernst effect. This effect, originating from a charge current propelled by a temperature gradient, serves as a tool to explore the topological characteristics of materials.…”

“…While they may exhibit lower performance compared to photoconductors, they operate efficiently across a broad spectrum of wavelengths and do not require refrigeration. 38…”

Revealing Large Room-Temperature Nernst Coefficients in 2D Materials by First-Principles Modeling

“…Lastly, Nernst thermopiles are frequently employed in thermal radiation detection. While they may exhibit lower performance compared to photoconductors, they operate efficiently across a broad spectrum of wavelengths and do not require refrigeration 35 . The examination of the Nernst effect in 2D materials has predominantly centered on the anomalous Nernst effect.…”