  In this study, we present the fabrication and characterization of
Ni/LiNbO3/Ni trilayers using RF sputtering. These trilayers exhibit thick Ni
layers (10 microns) 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 LiNbO3 substrate, we achieved a
self-biased behavior. We demonstrate that these trilayers can power medical
implant devices remotely using a small AC magnetic field excitation, 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
non-invasive powering of medical implants. This work contributes to the
advancement of magnetoelectric materials and their applications in healthcare
technology.
