A way of synthesizing a magnetic fluid based on silicone oil with ferromagnetic nanowires is described, and its magneto-rheological effect is demonstrated. The physical characteristics of the resulting ferrophase are studied by means of optical and scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray phase analysis. The size of the nanowires is measured via dynamic light scattering with ferromagnetic wires stabilized in an aqueous solution by coating with polyvinylpyrrolidone.

The authors describe a way of obtaining iron-nickel nanowires 5 μm long and 100 nm in diameter using template synthesis based on track membranes. The

A method for obtaining iron-nickel nanowires 5 μm in length and 100 nm in diameter using template synthesis based on track membranes is described. The actual length of the obtained FeNi nanowires was estimated by scanning electron microscopy, and their elemental composition and structure were studied. The possibility of using the synthesized nanowires to obtain magnetic polymer gels is described.

Permalloy rod-shaped anisotropic nanoparticles have been used to study orientational relaxation in a polymethylsiloxane magnetic fluid. A magneto-rheological effect has been observed at different magnitudes and frequencies of the impact of a magnetic field, and the time of structural relaxation after removal of the field has been estimated.

It is shown that the empirical Williams-Landel-Ferry (WLF) and Vogel-Fulcher-Tammann (VFT) formulas, as well as the semiempirical formulas of other researchers, for the viscosity η in the glass transition region are, in fact, hyperbolic functions of temperature with corresponding relationships between their parameters. The hyperbolic dependence can be derived from the universal expansion of ln(η) into a Taylor series in a small temperature parameter near the glass transition temperature. The applicability of the principle of corresponding states follows from this expansion. A new two-parameter formula in the form of a second-degree polynomial is proposed for ln(η) in the glass transition region. This formula contains physically significant parameters and adequately describes the available experimental data for individual glass-forming substances.

It is shown that the empirical Williams–Landel–Ferry (WLF) and Vogel–Fulcher–Tammann (VFT) equations, as well as the semiempirical equations of other researchers, for the viscosity η in the glass transition region are, in fact, hyperbolic functions of temperature with corresponding relationships between their parameters. The hyperbolic dependence can be derived from the mathematically common expansion of lnη into a Taylor series in a small temperature parameter near the glass transition temperature, provided that the temperature range satisfies approximately (T − T_g)/T_g ≲ 0.1–0.15). The applicability of the principle of corresponding states for glasses of similar composition follows from this expansion. A new two-parameter equation in the form of a second-degree polynomial is proposed for ln(η) in the glass transition region. This equation contains physically significant parameters and adequately describes the available experimental data for individual glass-forming substances. The temperature range over which the proposed series expansion up to the third (quadratic in the small parameter) term is valid can be determined only experimentally, because the coefficients of the series depend on the nature of the glass. For the specific experimental data we used, the sharp temperature dependence of the viscosity in the glass transition region makes the quadratic polynomial applicable over almost the entire temperature range studied.