Details

Autor(en) / Beteiligte

• Myagkov, V.G.
• Zhigalov, V.S.
• Bykova, L.E.
• Bondarenko, G.V.
• Bondarenko, G.N.

Titel

Structural and magnetic features of the solid-state synthesis and martensitic transformations in Ni/Fe(0 0 1)/MgO(0 0 1) thin films

Ist Teil von

• Journal of magnetism and magnetic materials, 2007-03, Vol.310 (1), p.126-130

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2007

Link zum Volltext

Quelle

Elsevier ScienceDirect Journals Complete

Beschreibungen/Notizen

• The results of the experimental study of phase transformations occurring in Ni/Fe(0 0 1)/MgO(0 0 1) thin films with 3Fe:1Ni atomic composition during annealing at temperatures up to 650 °C and cooling to liquid nitrogen temperature are presented. Comparative analysis of previous and current results suggests that the paramagnetic phase γ par present in the invar of Ni 1− x Fe x alloys is the γ-Fe 3Ni phase with the lattice parameter a=0.3600 nm. Measurements of magnetization of the samples in dependence of composition allowed one to determine a single-phase region of γ par phase existence in thin films limited by 75 at% Fe. It is shown that the temperature of γ par phase initiation during the solid-state synthesis coincides with the temperature A S of the reverse martensitic α′→γ par transition ( A S= T 0∼550 °C).