This article is cited in 15 papers

CONDENSED MATTER

Phase transformations in Mn/Fe(001) films: Structural and magnetic investigations

V. S. Zhigalov^a, V. G. Myagkov^b, O. A. Bayukov^b, L. E. Bykova^b, G. N. Bondarenko^c, A. A. Matsynin<sup>a

a</sup> M. F. Reshetnev Siberian State Aerospace University
^b L. V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences
^c Institute of Chemistry and Chemical Technology SB RAS

Abstract: The solid-phase synthesis in epitaxial Mn/Fe(001) bilayer film systems with 24 at % of Mn has been shown to start at a temperature of 220°C with the formation of a γ-austenite lattice and the Mn and Fe films react completely under annealing to 600°C. In the sample cooling process after annealing below 220°C, the γ austenite undergoes a martensitic transformation to an oriented ∈(100) martensite. When the annealing temperature is increased above 600°C, Mn atoms migrate from the γ-lattice, which becomes unstable, and the film is partially again transformed to the epitaxial Fe(001) layer. The solid-phase synthesis in Mn/Fe(001) bilayer nanofilms and multilayers is assumingly determined by the inverse ε → γ martensitic transformation in the Mn-Fe system. The existence of a new low-temperature (~220°C) structure transition in the Mn-Fe system with a high iron content is assumed.

PACS: 66.30.Pa, 81.15.Np, 81.20.Ka, 81.30.Bx

Received: 09.04.2009
Revised: 13.05.2009

 English version: Journal of Experimental and Theoretical Physics Letters, 2009, 89:12, 621–625

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