Abstract
We study the effects of an applied magnetic field on mobile charges in a composite beam of piezoelectric semiconductor and piezomagnetic layers. The macroscopic theory of piezoelectrics/piezomagnetics and the drift–diffusion theory of semiconductors are used. A one-dimensional model for beam bending is derived. An analytical solution is obtained, showing that bending and axial polarization develops in the beam under the applied magnetic field and that the mobile charges move to screen the effective polarization charges. Hence the composite beam exhibits an interaction between the applied magnetic field and semiconduction. The results are useful in piezotronic devices interacting with magnetic fields.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China. Grant Numbers: 11472182 and 11872041.
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Wang, G., Nie, G., Liu, X. et al. Magnetically induced redistribution of mobile charges in bending of composite beams with piezoelectric semiconductor and piezomagnetic layers. Arch Appl Mech 91, 2949–2956 (2021). https://doi.org/10.1007/s00419-021-01954-w
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DOI: https://doi.org/10.1007/s00419-021-01954-w