Cairo University

MTPR Journal

 

GIANT ENHANCEMENT IN THE PHYSICAL PROPERTIES OF LaFeO3 BY SUBSTITUTION OF DIVALENT IONS

& doi: https://doi.org/10.1142/9789814504898_0023
M. A. AHMED, S. I. DEK and M. M. ARMAN
Material Science Lab (1), Physics Department, Faculty of Science, Cairo University, Giza, Egypt


Vol./Issue: 13 , id: 364

Perovskites with the general formula La1-xMxFeO3, x = 0.0 and x = 0.3, M = Ca2+, Sr2+ and Ba2+ were prepared by the double sintering ceramic technique. The X-ray powder diffraction, IR and TEM were carried out to characterize the samples. The molar magnetic susceptibility (χM) was enhanced by substitution the divalent metal ion (M2+ = Ca2+, Sr2+ and Ba2+) instead of La+3. The saturation magnetization for both Ca2+ and Sr2+ substituted samples is increased up to 10 times its values for the parent which allow to use these samples in many applications. The Ca substitution improves the conductivity by more than 18 times while the Sr enhances it by 25 times.