Self-Biased Magnetoelectric Ni/LiNbO3/Ni Trilayers for Body-Embedded Electronic Energy Harvesters - Institut des Nanosciences de Paris Access content directly
Journal Articles Physical Review Applied Year : 2023

Self-Biased Magnetoelectric Ni/LiNbO3/Ni Trilayers for Body-Embedded Electronic Energy Harvesters

Abstract

In this study, we present the fabrication and characterization of Ni/LiNbO 3 /Ni trilayers using rf sputtering. These trilayers exhibit thick Ni layers (10 µm) and excellent adherence to the substrate, enabling high magnetoelectric coefficients. By engineering the magnetic anisotropy of nickel through anisotropic thermal residual stress induced during fabrication, and by selecting a carefully chosen cut angle for the LiNbO 3 substrate, we achieved self-biased behavior. We demonstrate that these trilayers can power medical implant devices remotely using excitation by a small ac magnetic field, thereby eliminating the need for a dc magnetic field and bulky magnetic field sources. The results highlight the potential of these trilayers for the wireless and noninvasive powering of medical implants. This work contributes to the advancement of magnetoelectric materials and their applications in healthcare technology.
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Dates and versions

hal-04223308 , version 1 (29-09-2023)

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Tianwen Huang, Loïc Becerra, Aurélie Gensbittel, Yunlin Zheng, Hakeim Talleb, et al.. Self-Biased Magnetoelectric Ni/LiNbO3/Ni Trilayers for Body-Embedded Electronic Energy Harvesters. Physical Review Applied, 2023, 20 (3), pp.034059. ⟨10.1103/PhysRevApplied.20.034059⟩. ⟨hal-04223308⟩
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