Synthesis and characterization of Sr doped LaMnO₃ electrospun fibers

In this paper, fibers of lanthanum manganite doped with strontium were obtained by electrospinning using lanthanum chloride, manganese nitrate, strontium chloride and polyvinyl butyral as precursors. During the electrospinning process, we studied the influences of parameters such as the concentration of polymer (10 and 15 wt%), the flow, and the distance between the electrodes in the morphologic characteristics of the fibers. After synthesis the fibers were heat treated at different temperatures. Morphological characterization was performed by electron microscopy, thermal analysis was used to evaluate the thermal behavior, and X-ray diffraction to identify the phases present. We observed the formation of micro-and nanostructured fibers consisting mainly of LaMnO₃. (author)