Structural and Magnetic Study of CaMn1−xMoxO3 (x = 0.08, 0.10, 0.12) System

In this paper, we analyze the structural, morphological, and magnetic properties of CaMn 1−x Mo x O 3 (x = 0.08, 0.10, 0.12) system prepared by the usual solid-state reaction method. The results obtained by scanning electron microscopy (SEM) show an appropriate sintering process, and energy dispersive spectroscopy (EDS) shows that there is not a presence of strange elements. The X-ray diffraction analysis (XRD), through the Rietveld method, reveals that samples crystallize in a Pnma (62) orthorhombic structure, with an increase in the unit cell volume as a function of Mo concentration. Curves of magnetization zero field cooling (ZFC)-field cooling (FC) in a temperature range of 50 to 350 K show similar paramagnetic behavior of every applied field above 110 K in each one of the Mo doping. Below this temperature, the magnetic response becomes ferromagnetic. The antiferromagnetic transition was analyzed by fitting of the Curie-Weiss law. An increase in total effective magnetic moment and Neel temperature, ranging from 200 to 295 K, is observed when Mo concentration increases in CaMn 1−x Mo x O 3 (x = 0.08, 0.10, 0.12) system.