Influence of the Ag and Cu Intermediate Layers on the Temperature Ranges of Phase Transformations in Pt/Fe Film Compositions

O. S. Neboga, M. O. Pervakov, S. I. Sydorenko, I. A. Vladymyrskyy

National Technical University of Ukraine ‘KPI’, 37 Peremohy Ave., 03056 Kyiv, Ukraine

Received: 18.10.2016. Download: PDF

The article presents results of investigation of the effect of Ag and Cu additional layers on the temperature ranges of phase transformations– formation of disordered magnetically soft $A1$-FePt phase and its subsequent transition to ordered magnetically hard $L1_{0}$-FePt phase–in nanosize Pt(10 nm)/(Ag, Cu)(x nm)/Fe(10 nm) film compositions (where x = 0, 4 nm) on SiO$_{2}$(100 nm)/Si(001) substrates during annealing in a vacuum. As determined, the introduction of Cu and Ag intermediate layers into Pt(10 nm)/Fe(10 nm) film compositions results in the decrease of the disordered and ordered phases’ formation temperatures. In addition, introduction of the additional intermediate layers causes an increase of film-materials’ coercivity after the heat treatment.

Key words: ordered $L1_{0}$-FePt phase, coercivity, phase transformations.



PACS: 64.70.Nd, 64.75.St, 68.55.-a, 73.25.+i, 75.50.Ss, 75.50.Vv, 75.70.Cn, 81.40.Rs

Citation: O. S. Neboga, M. O. Pervakov, S. I. Sydorenko, and I. A. Vladymyrskyy, Influence of the Ag and Cu Intermediate Layers on the Temperature Ranges of Phase Transformations in Pt/Fe Film Compositions, Metallofiz. Noveishie Tekhnol., 38, No. 12: 1599—1609 (2016) (in Ukrainian)

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