Using wideband (0.5–6.5 eV) spectroscopic ellipsometry, we study ultrathin [Bi(0.6–2.5 nm)–FeNi(0.8,1.2 nm)]N multilayer films grown by rf sputtering deposition, where the FeNi layer has a nanoisland structure and its morphology magnetic properties change with decreasing nominal thickness. From model simulations of ellipsometric angles, Ψ(ω) Δ(ω), complex (pseudo)dielectric function spectra Bi ...

In this paper, we explore the suggestions of results experimental studies on low-dimensional layered systems in FeNi/V2O3/FeNi film structures. The multifunctional material V2O3 is used as an interlayer between magnetically active FeNi layers. films were obtained by ultrahigh vacuum magnetron sputtering a glass substrate with base size 10−10 Torr. It has been found that for films, decrease meta...

The reverse co-precipitation method was used for synthesis of the pure phase multiferroic BiFeO3 (BFO) nanoparticles. Influence of different pH values on the microstructure and magnetic properties of the BFO nanopowders was investigated. Thermogravimetric-differential thermal analysis (TG-DTA) technique indicated that the optimal temperature for calcination is 550°C. The phase formation and the...