Magnetic polarons reach a hundred thousand Bohr magnetons.

The ability of light to manipulate fundamental interactions in a medium is central to research in optomagnetism and applications in electronics. A prospective approach is to create composite quasiparticles, magnetic polarons, highly susceptible to external stimuli. To control magnetic and transport properties by weak magnetic and electric fields, it is important to find materials that support photoinduced magnetic polarons with colossal net magnetic moments.

Femtosecond optical orientation triggering magnetization precession in epitaxial EuO films.

Light-induced magnetization response unfolding on a temporal scale down to femtoseconds presents a way to convey information spin manipulation. The advancement of the field requires exploration of new materials implementing various mechanisms for ultrafast magnetization dynamics. Here, pump-probe measurements of EuO-based ferromagnets by a time-resolved two-colour stroboscopic technique are reported.

[Aspects of morphology of photodynamic destruction].

The results of light and electron microscopic study of the photodynamic destruction of the mouse liver with the use of Russian and imported photosensitizers (PS) at the concentration peak are presented. Considerable differences in the primary targets are noted; the changes correlated at the tissue and ultrastructural level. The use of two PS showed the damage of the soluble part of the cytoplasm: generalized cytoplasm damage with the involvement of main cell organelles in one case and the destruction of the sinusoidal lining and the hepatocyte sinusoidal pole with a diffuse spread of changes beyond the main focus of the damage close to the vascular bed in the other.

[Morphologic diagnosis of myogenous uterine tumors].

102 myogenous tumours and 12 unchanged areas of the uterine wall were studied histologically, morphometrically, stereometrically, microspectrophotometrically and electron microscopically. The differential-diagnostic importance of the mitotic activity, nuclear DNA content, volume proportion of the myofibrillar material in comparison with the cell density and volume proportion of nuclei is shown.