Abstract
LaCoxMn1-xO3 (x=0.0, 0.1, 0.3, 0.5, 0.7, 0.9, 1.0) compounds were prepared by commercial sintering technique in air and O2 atmospheres at temperatures of 1100 to 1200°C. Magnetic and electric properties of the compounds were measured by means of inductance, vibrating sample magnetometer and four-electrode technique in the temperature range between 298 and 78K, respectively. Saturation magnetization decreased monotonously with increasing the substitutional amount of Co ion for Mn ion. While, coercivity, remanence and Curie temperature increased with increasing Co up to x=0.5, and beyond this region, they decreased reversely with increasing Co substitute. Electric resistivity exponentially increased with lowering temperature, like behavior of semiconductor materials. The logarithmic values of the resistivity obeyed a linear-relation with reciprocal temperature.
