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Angle selective piezoelectric strain-controlled magnetization switching in artificial spin ice based multiferroic system
Citation
Avinash Chaurasiya, Manish Anand, & Rawat, R. S. (2022). Angle selective piezoelectric strain-controlled magnetization switching in artificial spin ice based multiferroic system. Journal of Applied Physics, 131(18), Article 183901. https://doi.org/10.1063/5.0089902
Abstract
The prospect of electrically controlled writing of ferromagnetic bits is highly desirable for developing scalable and energy-efficient spintronics devices. In this direction, various efforts have been made to achieve electrically controlled magnetization switching utilizing an artificial multiferroic system. To date, the magnetization switching has been realized in a diverse nanopatterned magnetic system. However, the demonstration of electric field-induced strain-controlled magnetization switching in artificial spin ice (ASI) coupled with a piezoelectric material is still unexplored. In the present work, we perform micromagnetic simulations to investigate the electric field-induced strain-mediated magnetization switching in an ASI based multiferroic system. Here, the piezoelectric strain-controlled magnetization switching has been studied by applying the electric-field pulse at different angles with respect to the axes of the system. Remarkably, magnetization switches by 180∘ only if the external electric-field pulse is applied at some specific angles, close to the anisotropy axis of the system (≈30∘–60∘). Our detailed analysis of the demagnetization energy variation reveals that the energy barrier becomes antisymmetric in such cases, facilitating complete magnetization reversal. Moreover, we have also proposed a possible magnetization reversal mechanism with two sequential electric-field pulses of a relatively smaller magnitude. We believe that the present work could pave the way for a future ASI-based multiferroic system for scalable magnetic field-free low power spintronics devices.
Date Issued
2022
Journal
Journal of Applied Physics
DOI
10.1063/5.0089902
Grant ID
MOE2019-T2-1-058
NRF-CRP21-2018-0003
Funding Agency
Ministry of Education, Singapore
National Research Foundation, Singapore