4.4 Article

Straintronic Nanomagnetic Logic Using Self-Biased Dipole Coupled Elliptical Nanomagnets

期刊

IEEE TRANSACTIONS ON MAGNETICS
卷 58, 期 10, 页码 -

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2022.3199589

关键词

Strain; Magnetization; Voltage; Thermal stability; Switches; Perpendicular magnetic anisotropy; Substrates; Dipole coupling; nanomagnetic logic (NML); straintronics

资金

  1. International Bilateral 396 Corporation Division of the Department of Science and Technology (DST), Government of India, through the Indo-Norway [INT/NOR/RCN/NS/P-06/2019]

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This work presents a thermally stable and self-biased straintronic nanomagnetic logic (NML) that utilizes the dipole coupling between nanomagnets. By designing elliptical nanomagnets with fixed aspect ratio within a specific thickness range, and using external voltage and dipole coupling, controlled NML operations can be achieved.
This work delineates the thermally stable, self-biased straintronic nanomagnetic logic (NML) by leveraging the dipole coupling between an array of nanomagnets using only two electrodes that discard the intricate voltage mechanism of multi-electrode systems. For efficient NML operation, the self-biased elliptical nanomagnets with fixed aspect ratio can be designed over a particular thickness range, limited by the thermal stability and shape anisotropy energy. Micromagnetic simulations show that the 180 degrees magnetization switching of the nanomagnet is assisted by an external applied voltage and the dipole coupling, allowing controlled NML operations. The relationship between the critical switching frequency and critical strain is used to select the appropriate nanomagnets for different logic operations.

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