Механизм взаимодействия тонких плёнок группы железа Fe, Co, Ni с подложкой из полиэтилентерефталата

Abstract

Shapoval, K.O., Kasumov, A.M., Lashkaryov, G.V. (2017) Interaction mechanism between thin films of iron group Fe, Co, Ni and polyethyleneterephthalate as substrate, 4(37), doi: 10.26909/csl.4.2017.4 Significant progress in obtaining and investigating thin metallic films, achieved in the late XX century, led to the discovery of a whole series of new phenomena, the study of which remains relevant at the present time. Technology development made it possible to synthesize completely new multicomponent materials with properties. In this case, a number of unique physical phenomena arise, such as a spin-dependent scattering of conduction electrons, an indirect exchange coupling, surface magnetic anisotropy. Transformations of magnetic and magnetoresistive properties in layered structures in are largely due to the indirect exchange relationship that arises between the finer and oscillates with a change in the thickness of the nonmagnetic interlayer.PET (polyethylene terephthalate, better known as PET or lavsan) is a complex thermoplastic polyester of terephthalic acid and ethylene glycol. According to its physical properties, it is a solid. PET has good heat resistance in the temperature range from -40 °C to +200 °C. A small water absorption causes a high stability of properties and sizes of products. Products made of PET are resistant to shock and cracking, and can operate at temperatures up to + 70 °C. PET is resistant to dilute acids, oils, alcohols, mineral salts and most organic compounds, with the exception of strong alkalis and some solvents. PET minimally adsorbs odors and exhibits the properties of a good gas barrier.Interaction mechanisms of thin films ferromagnetic metals (Fe, Co, Ni) with a polyethyleneterephthalate (PET) as subsrate was study based on the analysis of IR absorption spectra.It is shown that between these films and the substrate, both chemical and magnetic interactions occur, leading to a shift and splitting of the IR absorption bands of the polymer. The chemical interaction of metal atoms occurs mainly with carbonyl C = O, carboxylic COOH, hydroxyl OH and C -O molecular groups of the polymer containing oxygen. The magnetic interaction of ferromagnetic metals (Fe, Co, Ni) arises from the diamagnetic properties of PET molecular groups.