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Tailoring magnetic properties of multicomponent layered structure via current annealing in FePd thin films

Matteo Cialone ; Federica Celegato ; Marco Coisson ; Gabriele Barrera ; Gianluca Fiore ; Ruslan Shvab (Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik) ; Uta Klement (Institutionen för material- och tillverkningsteknik) ; Paola Rizzi ; Paola Tiberto
Scientific Reports (2045-2322). Vol. 7 (2017),
[Artikel, refereegranskad vetenskaplig]

Multicomponent layered systems with tailored magnetic properties were fabricated via current annealing from homogeneous Fe67Pd33 thin films, deposited via radio frequency sputtering on Si/SiO2 substrates from composite target. To promote spontaneous nano-structuring and phase separation, selected samples were subjected to current annealing in vacuum, with a controlled oxygen pressure, using various current densities for a fixed time and, as a consequence, different phases and microstructures were obtained. In particular, the formation of magnetite in different amount was observed beside other iron oxides and metallic phases. Microstructures and magnetic properties evolution as a function of annealing current were studied and interpreted with different techniques. Moreover, the temperature profile across the film thickness was modelled and its role in the selective oxidation of iron was analysed. Results show that is possible to topologically control the phases formation across the film thickness and simultaneously tailor the magnetic properties of the system.



Denna post skapades 2017-12-28. Senast ändrad 2018-01-16.
CPL Pubid: 254120

 

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Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik (2005-2017)
Institutionen för material- och tillverkningsteknik (2005-2017)

Ämnesområden

Hållbar utveckling
Materialteknik

Chalmers infrastruktur