Magnetocaloric behaviour of cobalt-doped lanthanum-strontium manganites.
Magnetic refrigeration is one of the technologies with the greatest commercial potential, the application of this technology has not been realized due to the need to have magnetocaloric materials that work at room temperature (300 K) and with low magnetic fields (< 2 T). In this work was anal...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2022 |
| País: | México |
| Institución: | UNIVERSIDAD AUTÓNOMA DEL ESTADO DE HIDALGO |
| Repositorio: | PÄDI Boletín Científico de Ciencias Básicas e Ingeniería del ICBI |
| Idioma: | español |
| OAI Identifier: | oai:repository.uaeh.edu.mx:article/9932 |
| Acceso en línea: | https://repository.uaeh.edu.mx/revistas/index.php/icbi/article/view/9932 |
| Access Level: | acceso abierto |
| Palabra clave: | Magnetic refrigeration magnetocaloric manganite Refrigeración magnética Magnetocalórico Manganita |
| Sumario: | Magnetic refrigeration is one of the technologies with the greatest commercial potential, the application of this technology has not been realized due to the need to have magnetocaloric materials that work at room temperature (300 K) and with low magnetic fields (< 2 T). In this work was analyzed the effect of Co3+ substitution in Mn3+ positions in the lanthanum-strontium manganite, La0.3Sr0.7CoxMn1-xO3 with x from 0.05 to 0.2 mol, with the objective of decreasing the working temperature, keeping the magnetic entropy value above 2.5 J/kg∙K and the cooling capacity higher than 80 J/K. By XRD and its analysis by Rietveld refinement, orthorhombic phases were confirmed for all concentrations. Vibrating sample magnetometry showed ferromagnetic order at room temperature and the Curie temperature decreased to 300 K for the concentration of x= 0.15, this suggests that the material may be a good candidate for magnetic refrigeration applications. |
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