Thermally-Induced Phase Transitions and Magnetic Properties of Pt/Fe and Pt/Au/Fe Layered Stacks
І. А. Vladymyrskyi, Y. D. Mamchur, A. P. Burmak, S. М. Voloshko
National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, 37 Peremohy Ave., UA-03056 Kyiv, Ukraine
Received: 10.03.2021. Download: PDF
In this study the regularities of diffusion processes and structural phase transitions in Pt(15 nm)/Fe(15 nm) layered stacks with and without Au intermediate layer during annealing in vacuum in the temperature range of 215–550°C are investigated. The influence of both annealing temperature and the presence of intermediate layer on magnetic properties of the films is analyzed. As found, the diffusion processes in Pt/Au/Fe stack are significantly accelerated compared to Pt/Fe film leading to drastic enhancement of the coercivity up to 20.9 kOe.
Key words: coercivity, L1$_0$-FePt phase, diffusion, thin films.
PACS: 68.35.Ct, 68.35.Dv, 68.35.Fx, 68.55.-a, 75.50.Ss, 75.50.Vv
Citation: І. А. Vladymyrskyi, Y. D. Mamchur, A. P. Burmak, and S. М. Voloshko, Thermally-Induced Phase Transitions and Magnetic Properties of Pt/Fe and Pt/Au/Fe Layered Stacks, Metallofiz. Noveishie Tekhnol., 43, No. 5: 593—611 (2021) (in Ukrainian)