Assessment of the relationship between magnetotransport and magnetocaloric properties in nano-sized La0.7Ca0.3Mn1-xNixO3 manganite

The effect of Ni2+substitution on the magneto-transport properties and the concomitant relationship with the magnetocaloric function of nano-sizedLa0.7Ca0.3Mn1−xNixO3(x = 0, 0.02, 0.07, and 0.10) perovskite manganites are reported. All the samples were synthesized using the auto-combustion method. X-raydiffraction analysis studies confirmed the phase purity of the synthesized samples. The substitution of Mn3+ions with Ni2+ions in the La0.7Ca0.3MnO3lattice wasalso verified using this technique. Rietveld analysis indicated that the volume of the unit cell increased with increasing Ni2+content. Zero-field-cooled andfield-cooled magnetization showed that all samples underwent a paramagnetic-ferromagnetic phase transition, which was concomitant with a metal-insulator transition.

• Autores: Gómez, Adrián; Chavarriaga, Edgar; Izquierdo, J.L.; Prado Gonjal, Jesús; Mompean, F.; Rojas, Nestor; Morán, O.
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2018
• Institución: Pascual Bravo
• Repositorio: Pascual Bravo
• Idioma: eng
• OAI Identifier: oai:repositorio.pascualbravo.edu.co:pascualbravo/72
• Acceso en línea: https://repositorio.pascualbravo.edu.co/handle/pascualbravo/72
• Rights: openAccess
• License: http://purl.org/coar/access_right/c_abf2