Solid state amorphization in magnetic multilayers

• Autorzy: Stobiecki T.
• Konferencja: Korean-Polish Joint Seminar on Physical Properties of Magnetic Materials (3 ; 26-28.08.1997 ; Kraków, Poland)
• Języki publikacji: EN

Abstrakty

EN

The discovery of phase formation by solid-state reaction (SSR) enhanced the interest on a new class of materials, compositionally modulated metal structures. Crystalline metallic layers with layer thicknesses typically from a few atomic planes to a few hundred atomic planes, prepared by sputtering deposition or vacuum evaporation, can be transformed to amorphous alloys by low temperature annealing or ion beam mixing. This phenomenon is explained by fast diffusion in the amorphous phase and by thermodynamical driving forces as a result of the large negative heat of mixing of the elements. The problems of the formation and the distribution of an amorphous phase and metastable crystalline alloy phases of multilayer system (ML) are not at all explained. In the case of late transition metals (LTM: Fe, Co, Ni) and early transition metal (ETM: Zr.Ti) ML the two growth models of amorphous alloy phase have been assumed in order to interpret the structural, electrical transport and magnetic properties of LTM/ETM multilayers in as deposited and annealing state. The first growth model assumes a planar growth of amorphous alloy phase between crystalline sublayers and the second one suggests that an amorphous alloy phase is formed during sputtering deposition in the plane between layers as well as in the grain boundaries. In M L with alternately stacked ultrathin films of Zr and Fe the formation of amorphous Fe structure up to a critical thickness d^crit_Fe < 2 nm was recently observed. [...]

• Wydawca: Institute of Electron Technology
• Czasopismo: Electron Technology
• Rocznik: 1998
• Tom: Vol. 31, No. 1
• Strony: 88--89
• Opis fizyczny: Bibliogr. 12 poz.

Twórcy

autor

Stobiecki T.

• University of Mining and Metallurgy, Electronics Departament 30-059 Kraków al. Mickiewicza 30, Poland,

Uwagi

EN

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