Multiscale nature of hysteretic phenomena: Application to CoPt-type magnets

We suggest a workable approach for the description of multiscale magnetization reversal phenomena in nanoscale magnets and apply it to CoPt-type alloys. We show that their hysteretic properties are governed by two effects originating at different length scales: a peculiar splitting of domain walls and their strong pinning at antiphase boundaries. We emphasize that such multiscale nature of hysteretic phenomena is a generic feature of nanoscale magnetic materials.Comment: 4 pages (revtex 4), 2 color EPS figure

DIRECTION OF REHABILITATION POLICY ON LIQUIDATION OF CONSEQUENCES OF A RADIATING EXTREME SITUATION IN KURGAN REGION

Radioecological situation in Kurgan region as consequence of activity of the largest nuclear enterprise of the country, presence of the territories which have suffered from radioactive pollution, put enforcement authorities of the region before necessity constantly to react to the extremely adverse ecological conditions. The set of the radiation-ecological factors affecting social and economic development of polluted territories, health and mood of the population, has no analogues in Russia, therefore it is necessary to offer and formulate the basic directions of rehabilitation policy on liquidation of consequences of radiation extreme situation for a conclusion of similar territories from crisis