Origin of the Apparent Electric-Field Dependence of Electrostrictive Coefficients
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866914764442042368 |
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| author | Yu, Jiacheng Zaki, Abdelali Mache, Killian Ibder, Omar Coste, Sandrine Barré, Maud Lacorre, Philippe Janolin, Pierre-Eymeric |
| author_facet | Yu, Jiacheng Zaki, Abdelali Mache, Killian Ibder, Omar Coste, Sandrine Barré, Maud Lacorre, Philippe Janolin, Pierre-Eymeric |
| contents | Electrostrictive materials exhibit a strain that is proportional to the square of the induced polarization. In linear dielectrics where the permittivity is constant, this electromechanical strain is also proportional to the square of the electric field. However, under increasing amplitudes of the driving field, the electromechanical strain sometimes saturates; the electrostrictive coefficients therefore appear to depend on the amplitude of the electric field used to measure them. Here, we present a methodology showing that this apparent field dependence is a consequence of neglecting higher-order electromechanical phenomena. When these are taken into account, not only do the electrostrictive coefficients remain constant but the signs of the high-order coefficients enable the prediction of the saturation behavior from a single measurement. We illustrate this approach on both classical and non-classical (so-called ``giant'') electrostrictors. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2404_14015 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Origin of the Apparent Electric-Field Dependence of Electrostrictive Coefficients Yu, Jiacheng Zaki, Abdelali Mache, Killian Ibder, Omar Coste, Sandrine Barré, Maud Lacorre, Philippe Janolin, Pierre-Eymeric Materials Science Electrostrictive materials exhibit a strain that is proportional to the square of the induced polarization. In linear dielectrics where the permittivity is constant, this electromechanical strain is also proportional to the square of the electric field. However, under increasing amplitudes of the driving field, the electromechanical strain sometimes saturates; the electrostrictive coefficients therefore appear to depend on the amplitude of the electric field used to measure them. Here, we present a methodology showing that this apparent field dependence is a consequence of neglecting higher-order electromechanical phenomena. When these are taken into account, not only do the electrostrictive coefficients remain constant but the signs of the high-order coefficients enable the prediction of the saturation behavior from a single measurement. We illustrate this approach on both classical and non-classical (so-called ``giant'') electrostrictors. |
| title | Origin of the Apparent Electric-Field Dependence of Electrostrictive Coefficients |
| topic | Materials Science |
| url | https://arxiv.org/abs/2404.14015 |