FERROMAGNETISM OF SELF-ORDERED alpha-FESI2 NANORODS ON THE VICINAL SI(111)-4° SURFACE FROM 2K TO 300K
N.G. Galkin1, D.L. Goroshko1, I.A. Tkachenko1,2, K.N. Galkin1
1Institute of Automation and Control Processes, Far East Branch, Russian Academy of Sciences, Vladivostok, Russia
2Institute of Chemistry, Far East Branch, Russian Academy of Sciences, Vladivostok, Russia
Keywords: vicinal silicon surface, self-ordered growth, iron disilicide nanorods, remagnetization loops, soft ferromagnet
Abstract
The emergence of magnetic properties in nano-objects of non-magnetic substances based on silicon and transition metal (iron) is considered. An analysis of the literature showed that, for a monolayer iron coating on a vicinal silicon surface with (111) orientation after solid-phase annealing at 450-550 °C, a system of self-ordered two-dimensional nanorods with the α-FeSi2 structure is formed, which has superparamagnetic properties. In this work, we study the transition to ferromagnetic properties in a system of α-FeSi2 nanorods in the temperature range of 2-300 K with an increase in the iron coverage to 5.22 monolayers, which is important for creating spintronics devices in the framework of the planar silicon technology.
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