AIM To study the ultrastructure and some functional indexes of tumor cells treated with stabilized iron nanoparticles in vitro. METHODS 3-[4,5dimethylthiazol-2-1]-2,5-diphenyltetrazolium bromide (MTT)-test, electron microscopy, polarography with applying of closed Clark's electrode. RESULTS It was shown that cultivation of cells with stabilized Fe(3)O(4) leads to intracellular accumulation ...

We have investigated the static and dynamical response of magnetic clusters in Co0.2Zn0.8Fe1.6Ti0.4O4 spinel oxide, where a sequence of magnetic phase transitions, i.e, paramagnetic(PM) to ferromagnetic (FM) state at TC ≤ 270K and ferromagnetic to canted spin glass (CSG) state at Tf ≤ 125K is observed. The time dependence of remanent magnetization shows a non-equilibrium spin dynamics in the CS...

We theoretically investigate the ground state properties of ferromagnetic metal/conjugated polymer interfaces. The work is partially motivated by recent experiments in which injection of spin polarized electrons from ferro-magnetic contacts into thin films of conjugated polymers was reported. We use a one-dimensional nondegenerate Su-Schrieffer-Heeger (SSH) Hamiltonian to describe the conjugate...

In our manuscript, we assumed, that each substitutional Fe atom and each interstitial Fe atom, which exist with the ratio of 85% and 15% of the doped Fe atoms, respectively, contribute equally to the integrated XAS intensity expressed by equation (1) in the main text. Hereinafter, we call this assumption as assumption A in this Supplemental Information. This was used for deriving the following ...

We report experiments where magnetization in GaMnAs ferromagnetic semiconductor is manipulated via strain or electric current. In both cases, charge carrier holes become partially polarized due to the anisotropic modification of holes spectra caused by spin–orbit interactions, and this polarization exerts spin torque sufficient to rotate ferromagnetic domains. & 2012 Elsevier B.V. All rights re...

We study the quantum 2D anti-ferromagnetic Ising model with Dzyaloshinskii-Moriya (DM) interaction using position space renormalization group (PSRG). In particular, we find that there exist a quantum phase transition between the anti-ferromagnetic phase and the chiral phase, which is the phase dominated by large DM interaction, at a finite value of the DM coupling in both one and two dimensions.

Two Dy(III) ions can be water bridged to form a textbook example of ferromagnetic short-bridged Dy-dimers where strong Ising anisotropy can be evidenced by single-crystal rotating magnetometry. The dimers present both single ion and single molecule magnet behaviour. Magnetic dilution evidences the influence of the ferromagnetic coupling on magnetic relaxation and especially quantum tunnelling.

By means of extensive computer simulations we analyse in detail the twodimensional ±J Ising spin glass with ferromagnetic next-nearest-neighbour interactions. We found a crossover from ferromagnetic to ‘spin glass’-like order both from numerical simulations and analytical arguments. We also present proof of a second crossover from the ‘spin glass’ behaviour to a paramagnetic phase for the large...