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

Autor: G.I. Supelano, D. Martinez Buitrago, L. T. Corredor, A.J. Barón-González, A. Sarmiento Santos, J. Albino Aguiar, C. A. Parra Vargas
Rok vydání: 2014
Předmět:
Zdroj: Journal of Superconductivity and Novel Magnetism. 28:259-264
ISSN: 1557-1947
1557-1939
DOI: 10.1007/s10948-014-2855-y
Popis: In this paper, we analyze the structural, morphological, and magnetic properties of CaMn1−xMoxO3 (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 CaMn1−xMoxO3 (x = 0.08, 0.10, 0.12) system.
Databáze: OpenAIRE
Externí odkaz: