Magnetic properties and L10 phase formation of FePt films prepared by high current-density ion-beam irradiation and rapid thermal annealing methods
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چکیده
منابع مشابه
Effects of ion-beam irradiation on the L10 phase transformation and their magnetic properties of FePt and PtMn films (Invited)
In this paper, we illustrate how to modify the structure and magnetic properties of L10 FePt and PtMn films using ion-beam irradiation. Highly ordered L10 FePt and PtMn phases were achieved directly by using 2 MeV He-ion irradiation without conventional post-annealing. A high ion-beam current density (~μA/cm ) was used to achieve direct beam heating on samples. This irradiation-induced heating ...
متن کاملخواص مغناطیسی بلوری آلیاژ نانوذرات آهن- پلاتین (L10-FePt) در گذار فاز
High magneto- crystalline anisotropy (ku=7×106j/m3) of L10-FePt nanoparticles are an excellent candidate for ultra high-density magnetic recording. The 4 nm FePt nanocrystals were prepared by superhydride reduction of FeCl2·4H2O and Pt(acac)2 precursors in the phenyl ether by reduction of the 1, 2-hexadecanediol and LiBEt3H superhydride. The crystal and magnetic structures were studied by XRD a...
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Magnetic nanoparticles and thin films exhibiting a large magnetic anisotropy energy density (MAE) have attracted enormous attention over the last years due to their potential use in magnetic data storage or sensing applications. FePt alloy nanoparticles and films have a huge MAE in the chemically ordered L10 phase. This ordered phase is typically obtained by annealing the as-prepared chemically...
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Modification of chemical order in epitaxial FePt binary alloy thin films deposited on MgO 100 substrates was induced and investigated in real time using x-ray rapid thermal annealing XRTA . This is possible because synchrotron undulator radiation has sufficient power density to induce significant structural modifications in thin films and its energy can be tuned to optimize absorption in the sa...
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