Comment to the paper “A new Hall-effect enabled voltage amplifier device based on magnetic and thermal properties of materials”

Autor(en)

Dieter Suess, Florian Slanovc, Udo Ausserlechner

Abstrakt

In the paper “Abhimanyu Kumar and Souvik Ganguli ‘A new Hall-effect enabled voltage amplifier device based on magnetic and thermal properties of materials.’ Journal of Magnetism and Magnetic Materials 514 (2020): 167054.“ it is claimed that the output voltage Vout of a Hall plate can be larger than its input voltage Vin. This clearly contradicts the well-known “no-voltage amplification property” of Hall plates. Within this comment we proof the no-voltage amplification theorem by simple methods. Hence, the main statement of Kumar et al. is proven to be incorrect. In addition, we give a simple proof that the solution of the governed equation has a unique solution with regards to the current flow. To illustrate the current flow and the obtained output voltage numerical examples using the finite element method are given.

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

Infineon Technologies Austria AG

Journal

Journal of Magnetism and Magnetic Materials

Band

547

Anzahl der Seiten

6

ISSN

0304-8853

DOI

https://doi.org/10.1016/j.jmmm.2021.168942

Publikationsdatum

12-2021

Peer-reviewed

Ja

ÖFOS 2012

103015 Kondensierte Materie

Schlagwörter

ASJC Scopus Sachgebiete

Electronic, Optical and Magnetic Materials, Condensed Matter Physics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/8183d168-78f5-4e78-9210-182f3a4783c2