An approach to growth of Fe-Si multilayers with controlled composition profile-a way to exchange coupled thin films.

The growth, composition and structure of sandwich structures (Fe-rich layer/Si-rich layer/Fe-rich silicide layer) grown on a Si(111) surface were studied by a few complementary microscopic and spectroscopic techniques with high spatial resolution. Intermixing at the Fe/Si and Si/Fe interfaces is demonstrated. Fe-rich layers grown directly on the Si(111) surface are crystalline and have abrupt but rough interfaces at both sides. The succeeding layers are disordered and their interfaces are fuzzy. The distributions of Fe and Si within the layers are laterally non-uniform. The reproducible fabrication of thin non-magnetic silicide spacers of predetermined thickness is demonstrated. Sandwich structures with such spacers exhibit exchange coupling between ferromagnetic Fe-rich layers.

[Change in the electrodermal resistance at biologically active points as an index of the functional state of the body in animals]. / Izmenenie élektrokozhnogo soprotivleniia v biologicheski aktivnykh tochkakh kak pokazatel' funktsional'nogo sostoianiia organizma zhivotnykh.

Variations in electrodermal resistance (EDR) at biologically active points were recorded in rat experiments during administration of neurotropic agents. Morphine and aminazine raised while corasole diminished EDR at these points. Variations in EDR at the biologically active points can be regarded as an index of the function of the animal central nervous system.