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Article

Magnetotransport Properties of Semi-Metallic Bismuth Thin Films for Flexible Sensor Applications

Department of Magnetic Materials and Nanostructures, Institute of Nuclear Physics Polish Academy of Sciences, PL-31342 Krakow, Poland
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Author to whom correspondence should be addressed.
Academic Editor: Keith J. Stine
Coatings 2021, 11(2), 175; https://doi.org/10.3390/coatings11020175
Received: 11 January 2021 / Revised: 24 January 2021 / Accepted: 27 January 2021 / Published: 2 February 2021
(This article belongs to the Special Issue Advances in Flexible Films and Coatings)
In this paper we describe characterization of semi-metallic bismuth thin films. We prepared bismuth thin films by a deposition of bismuth through thermal evaporation onto flexible Kapton substrates and annealing at temperatures close to the melting point of Bi. We studied the morphology and transport properties of these films. Immediately after the deposition we observed competition between vanishing of the grain boundaries and elastic strain energy, which stabilized at larger thicknesses leading to the grain size of 140 nm. This effect was accompanied by a continuous decrease of resistivity which, however, was larger than for the bulk bismuth. The film annealing at temperatures close to the melting point of Bi led to a 300% increase of magnetoresistance at room temperature and in the magnetic field of 7 T. The in situ resistance measurements allowed us to determine the permissible temperature at which the annealing does not cause the loss of film continuity. View Full-Text
Keywords: bismuth; flexible sensors; magnetic field sensor; magnetoresistance; Hall effect bismuth; flexible sensors; magnetic field sensor; magnetoresistance; Hall effect
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MDPI and ACS Style

Zabila, Y.; Marszalek, M.; Krupinski, M.; Zarzycki, A.; Perzanowski, M. Magnetotransport Properties of Semi-Metallic Bismuth Thin Films for Flexible Sensor Applications. Coatings 2021, 11, 175. https://doi.org/10.3390/coatings11020175

AMA Style

Zabila Y, Marszalek M, Krupinski M, Zarzycki A, Perzanowski M. Magnetotransport Properties of Semi-Metallic Bismuth Thin Films for Flexible Sensor Applications. Coatings. 2021; 11(2):175. https://doi.org/10.3390/coatings11020175

Chicago/Turabian Style

Zabila, Yevhen, Marta Marszalek, Michal Krupinski, Arkadiusz Zarzycki, and Marcin Perzanowski. 2021. "Magnetotransport Properties of Semi-Metallic Bismuth Thin Films for Flexible Sensor Applications" Coatings 11, no. 2: 175. https://doi.org/10.3390/coatings11020175

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