Thermal expansionc oefficient of Ln0.6Sr0.4Co0.2M0.8O3−δ (Ln=La,Nd,Sm and M=Fe,Ni,Mn) perovskite oxide


1 Ceramic, Material and Energy Research Center

2 ceramic, Material and Energy Research Center

3 Ceramics, Materials & Energy Research Center


In this study, Thermal expansion coefficient (TEC) variation of Ln0.6Sr0.4Co0.2M0.8O3−δ (Ln=La,Nd,Sm and M= Fe,Ni,Mn) perovskite oxide have been evalouated. Different compounds have been prepared and thermal expansion coefficient have been meseaured in different temperature by means of dilatometer analysis. Structural parameters of compounds have been  determined by X-ray diffraction and Field Emission Scanning Electron Microscopy (FE-SEM) has been used for the morphological study. Experimental results have shown TEC decreases favorably with substitution of  Nd3+ and Mn3+ ions in the lattice