The roles of the monovalent dopant on A-site in terms of enhancement electric and magnetic properties.
X-ray diffraction reveals that La0.90Li0.10-xNaxMnO3 compounds are a single-phase structure with no measurable impurity.
The M (T) plots showed all samples suffer a sharp FM-PM transition, accompanying the metal-semiconductor transition at Tms.
There is on low field MTZFC and MTFC curves which gradual decrease with increasing the doping.