Optimized Voltage-Induced Control of Magnetic Domain-Wall Propagation in Hybrid Piezoelectric/Magnetostrictive Devices
A theory of voltage-induced control of magnetic domain walls propagating along the major axis of a magnetostrictive nanostrip, tightly coupled with a ceramic piezoelectric, is developed in the framework of the Landau–Lifshitz–Gilbert equation. It is assumed that the strains undergone by the piezoele...
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| Format: | Article |
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MDPI AG
2021-06-01
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| Series: | Actuators |
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| Online Access: | https://www.mdpi.com/2076-0825/10/6/134 |
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| author | Giancarlo Consolo Giovanna Valenti |
| author_facet | Giancarlo Consolo Giovanna Valenti |
| author_sort | Giancarlo Consolo |
| collection | DOAJ |
| description | A theory of voltage-induced control of magnetic domain walls propagating along the major axis of a magnetostrictive nanostrip, tightly coupled with a ceramic piezoelectric, is developed in the framework of the Landau–Lifshitz–Gilbert equation. It is assumed that the strains undergone by the piezoelectric actuator, subject to an electric field generated by a dc bias voltage applied through a couple of lateral electrodes, are fully transferred to the magnetostrictive layer. Taking into account these piezo-induced strains and considering a magnetostrictive linear elastic material belonging to the cubic crystal class, the magnetoelastic field is analytically determined. Therefore, by using the classical traveling-wave formalism, the explicit expressions of the most important features characterizing the two dynamical regimes of domain-wall propagation have been deduced, and their dependence on the electric field strength has been highlighted. Moreover, some strategies to optimize such a voltage-induced control, based on the choice of the ceramic piezoelectric material and the orientation of dielectric poling and electric field with respect to the reference axes, have been proposed. |
| first_indexed | 2024-03-10T10:20:23Z |
| format | Article |
| id | doaj.art-594d1e4d20d34aa2bb3be79ea69dc5f0 |
| institution | Directory Open Access Journal |
| issn | 2076-0825 |
| language | English |
| last_indexed | 2024-03-10T10:20:23Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Actuators |
| spelling | doaj.art-594d1e4d20d34aa2bb3be79ea69dc5f02023-11-22T00:28:20ZengMDPI AGActuators2076-08252021-06-0110613410.3390/act10060134Optimized Voltage-Induced Control of Magnetic Domain-Wall Propagation in Hybrid Piezoelectric/Magnetostrictive DevicesGiancarlo Consolo0Giovanna Valenti1Department of Mathematics, Computer, Physical and Earth Sciences, University of Messina, 98166 Messina, ItalyDepartment of Engineering, University of Messina, 98166 Messina, ItalyA theory of voltage-induced control of magnetic domain walls propagating along the major axis of a magnetostrictive nanostrip, tightly coupled with a ceramic piezoelectric, is developed in the framework of the Landau–Lifshitz–Gilbert equation. It is assumed that the strains undergone by the piezoelectric actuator, subject to an electric field generated by a dc bias voltage applied through a couple of lateral electrodes, are fully transferred to the magnetostrictive layer. Taking into account these piezo-induced strains and considering a magnetostrictive linear elastic material belonging to the cubic crystal class, the magnetoelastic field is analytically determined. Therefore, by using the classical traveling-wave formalism, the explicit expressions of the most important features characterizing the two dynamical regimes of domain-wall propagation have been deduced, and their dependence on the electric field strength has been highlighted. Moreover, some strategies to optimize such a voltage-induced control, based on the choice of the ceramic piezoelectric material and the orientation of dielectric poling and electric field with respect to the reference axes, have been proposed.https://www.mdpi.com/2076-0825/10/6/134magnetoelastic effectsdomain wall propagationLandau-Lifshitz-Gilbert equationcubic magnetostrictive materialspiezoelectric ceramics |
| spellingShingle | Giancarlo Consolo Giovanna Valenti Optimized Voltage-Induced Control of Magnetic Domain-Wall Propagation in Hybrid Piezoelectric/Magnetostrictive Devices Actuators magnetoelastic effects domain wall propagation Landau-Lifshitz-Gilbert equation cubic magnetostrictive materials piezoelectric ceramics |
| title | Optimized Voltage-Induced Control of Magnetic Domain-Wall Propagation in Hybrid Piezoelectric/Magnetostrictive Devices |
| title_full | Optimized Voltage-Induced Control of Magnetic Domain-Wall Propagation in Hybrid Piezoelectric/Magnetostrictive Devices |
| title_fullStr | Optimized Voltage-Induced Control of Magnetic Domain-Wall Propagation in Hybrid Piezoelectric/Magnetostrictive Devices |
| title_full_unstemmed | Optimized Voltage-Induced Control of Magnetic Domain-Wall Propagation in Hybrid Piezoelectric/Magnetostrictive Devices |
| title_short | Optimized Voltage-Induced Control of Magnetic Domain-Wall Propagation in Hybrid Piezoelectric/Magnetostrictive Devices |
| title_sort | optimized voltage induced control of magnetic domain wall propagation in hybrid piezoelectric magnetostrictive devices |
| topic | magnetoelastic effects domain wall propagation Landau-Lifshitz-Gilbert equation cubic magnetostrictive materials piezoelectric ceramics |
| url | https://www.mdpi.com/2076-0825/10/6/134 |
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