Analysis of the microstructure and chemical elemental composition were conducted using an SEM Hitachi TM3030Plus equipped with EDS

the file is in "tif" format


Samples of BaFe0.6Co0.3Nb0.1O3-x (BFCN) and BaCo0.7Yb0.2Bi0.1O3-x (BCYB) were prepared via the conventional solid-state reaction method. 
Analytical-grade powders BaCO3, Fe2O3, Co3O4, Nb2O5, Yb2O3 and Bi2O3, (commercially available) were initially mixed with a mortar and pestle; 
according to the molar ratios of Ba:Fe:Co:Nb = 1:0.6:0.3:0.1 and Ba:Co:Yb:Bi = 1:0.7:0.2:0.1. 
The obtained mixtures were heated first at 950 then at 1,050oC (BFCN) and 1,100oC (BCYB) for 12 h.

