Formation of free-standing magnetic particles by solid-state dewetting of Fe80Pd20 thin films
Barrera, Gabriele (Istituto Nazionale di Ricerca Metrologica)
Celegato, Federica (Istituto Nazionale di Ricerca Metrologica)
Coisson, Marco (Istituto Nazionale di Ricerca Metrologica)
Cialone, Matteo (Istituto Nazionale di Ricerca Metrologica)
Rizzi, Paola (University of Torino)
Tiberto, Paola (Istituto Nazionale di Ricerca Metrologica)

Data:	2018
Resum:	An alternative process to produce magnetic FePd nanoparticles dispersed in liquid solution exploiting a "top-down" strategy is here reported. This process is based on the solid-state dewetting of a Fe80Pd20 thin film to produce magnetic isolated islands array attached on a solid substrate. The subsequent detachment from the substrate offers the possibility to obtain free-standing magnetic nanoparticles for different applications. An adequate choice of the initial thickness of Fe80Pd20 thin film, annealing time and annealing temperature allows to finely tune the final size and shape of free-standing magnetic nanoparticles. A detailed study on the influence of latter parameters on islands morphology is here presented by SEM images analysis whereas the Johnson-Mehl-Avrami model is employed to extract the kinetics parameters of dewetting process. Room-temperature hysteresis loops and first-order reversal curves are measured in order to investigate the evolution of magnetic properties as a function of dewetting stage.
Ajuts:	European Commission 642642
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Solid-state dewetting ; Magnetic nanoparticles ; FePd alloy ; Magnetic thin film
Publicat a:	Journal of alloys and compounds, Vol. 742 (April 2018) , p. 751-758, ISSN 0925-8388

DOI: 10.1016/j.jallcom.2018.01.373

Preprint 16 p, 1.5 MB

Postprint 17 p, 1.1 MB

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Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Grup de nanoenginyeria de materials, nanomagnetisme i nanomecànica (Gnm3)
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