Reconfigurable microwave properties in trapezoid-shaped nanomagnets without bias magnetic field

Begari, Krishna and Haldar, Arabinda (2021) Reconfigurable microwave properties in trapezoid-shaped nanomagnets without bias magnetic field. Journal of Magnetism and Magnetic Materials, 540. p. 168431. ISSN 03048853

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Self-biased nanomagnetic structures with reconfigurable microwave properties are going to play a key role in the miniaturization of microwave devices. However, examples of such nanomagnets are very few. Here, we present a new nanostructure based on trapezoid shape which possesses two different remanent states through a simple sub-ns field initialization process. Different remanent states are associated with distinct microwave properties with a remarkably large shift between their microwave spectra. Other possible sample schemes based on networks, multilayers and arrays of trapezoid nanomagnets have also been discussed for a comprehensive report on this novel design architecture. The underlying physics of tunable microwave properties has been explained analytically using dipolar field driven variation of total effective field landscapes for different remanent states. The results offer a new route for the realization of the on-chip integration of microwave devices without any requirement of a bias magnetic field.

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IITH Creators:
IITH CreatorsORCiD
Begari, KrishnaUNSPECIFIED
Haldar, ArabindaUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: Ferromagnetic resonance; Magnetization dynamics; Microwave properties; Nanomagnetism; OOMMF
Subjects: Physics
Divisions: Department of Physics
Depositing User: . LibTrainee 2021
Date Deposited: 06 Sep 2021 07:58
Last Modified: 06 Sep 2021 07:58
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