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arXiv · 2409.10433

Magnetic metamaterials by ion-implantation

Christina Vantaraki·Petter Ström·Tuan T. Tran·Matías P. Grassi·Giovanni Fevola·Michael Foerster·Jerzy T. Sadowski·Daniel Primetzhofer·Vassilios Kapaklis
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Abstract

We present a method for the additive fabrication of planar magnetic nanoarrays with minimal surface roughness. Synthesis is accomplished by combining electron-beam lithography, used to generate nanometric patterned masks, with ion implantation in thin films. By implanting $^{56}$Fe$^{+}$ ions, we are able to introduce magnetic functionality in a controlled manner into continuous Pd thin films, achieving 3D spatial resolution down to a few tens of nanometers. Our results demonstrate the application of this technique in fabricating square artificial spin ice lattices, which exhibit well-defined magnetization textures and interactions among the patterned magnetic elements.

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Christina Vantaraki, Petter Ström, Tuan T. Tran, Matías P. Grassi, Giovanni Fevola, Michael Foerster, Jerzy T. Sadowski, Daniel Primetzhofer, Vassilios Kapaklis. 2024-09-16. Magnetic metamaterials by ion-implantation. https://doi.org/10.1063/5.0239106

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