X-ray diffraction, magnetic and magnetocaloric properties of La0.6Ca0.4Mn1−xFexO3 (0 ≤ x ≤ 0.3) manganites prepared by the sol-gel methodAbir Nasri, S. Zouari, M. Ellouze, E. K. Hlil and F. ElhalouaniEur. Phys. J. Plus, 129 8 (2014) 180DOI: https://doi.org/10.1140/epjp/i2014-14180-5