Razdvajanje faza u sustavu La0.5Sr0.5MnO3

Abstract

Perovskites are investigated as potential working materials in new technologies, such as solid ox - ide fuel cells, thermochemical energy storage, and magnetic refrigerators. They are interesting due to their application properties, such as electrical conductivity, ferromagnetic properties, and reducibility. Properties of perovskites can be improved by doping and the formation of structural defects. The aim of this work was to investigate the possibility of preparing Sr-doped lanthanum manganite with the chemical formula La 0.5 Sr 0.5 MnO 3 by coprecipitation procedure, and to analyse the observed phase separation. The material was prepared by procedure in which sources of metal cations (La 3+ , 2+ phase, especially when in tablet form.