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Ferromagnetic and superconducting nanostructures grown by Focused Electron/Ion Beam Induced Deposition

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In this contribution, we will show the capabilities of Focused Electron/Ion Beam Induced Deposition (FEBID/FIBID) for the growth of ferromagnetic and superconducting nanostructures. First, the FEBID technique will be introduced and representative examples of the grown ferromagnetic nanostructures [1] will be shown (see Figure 1), which include nanowires for cantilever functionalization, nano-spirals [2], nanowires with changing radius [3], core-shell nanowires [4], nanospheres [5], etc. The magnetic properties of these nanostructures will be addressed, with emphasis in the characterization by Electron Holography [4]. Strategies to improve the ferromagnetic behavior will be shown [6]. Later, the application of FIBID technique, using Ga-based and He-based microscopes, for the growth of superconducting nanowires will be presented [7]. Emphasis will be put on the correlation between the superconducting properties and the microstructure, investigated by TEM . Finally, the mechanical properties of suspended nanowires grown by these techniques, studied by three-point-contact AFM technique, will be presented [8].

[1] J. M. De Teresa et al., J. Phys. D: Appl. Phys., 49, 243003 (2016) [2] A. Fernández-Pacheco et al., Scientific Reports 3, 1492 (2013) [3] J. Pablo-Navarro et al., J. Phys. D: Appl. Phys., 50, 18LT01 (2017) [4] J. Pablo-Navarro et al., Nanotechnology, 27, 285302 (2016) [5] H. Lavenant et al., Nanofabrication 1, 65 (2014) [6] J. Pablo-Navarro et al., manuscript in preparation [7] R. Córdoba et al., manuscript in preparation [8] R. Córdoba et al., manuscript submitted

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