Comment to the paper “A new Hall-effect enabled voltage amplifier device based on magnetic and thermal properties of materials”
- Author(s)
- Dieter Suess, Florian Slanovc, Udo Ausserlechner
- Abstract
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(s)
- Physics of Functional Materials
- External organisation(s)
- Infineon Technologies Austria AG
- Journal
- Journal of Magnetism and Magnetic Materials
- Volume
- 547
- No. of pages
- 6
- ISSN
- 0304-8853
- DOI
- https://doi.org/10.1016/j.jmmm.2021.168942
- Publication date
- 12-2021
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103015 Condensed matter
- Keywords
- ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials, Condensed Matter Physics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/comment-to-the-paper-a-new-halleffect-enabled-voltage-amplifier-device-based-on-magnetic-and-thermal-properties-of-materials(8183d168-78f5-4e78-9210-182f3a4783c2).html