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| Formato: | Artículo científico |
| Idioma: | en |
| Publicado em: |
Universidad Industrial de Santander
2021
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| Acesso em linha: | https://www.redalyc.org/articulo.oa?id=553772639010 https://www.redalyc.org/journal/5537/553772639010/ https://www.redalyc.org/journal/5537/553772639010/html/ https://www.redalyc.org/journal/5537/553772639010/553772639010.epub https://www.redalyc.org/journal/5537/553772639010/movil |
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Sumário:
- A study of the structural, magnetic, and electrical properties of Ba 1-x Na x CoO3 compounds (x = 0.25, 0.5, 0.75) Carlos A. Estrada-Rodríguez Lutiene Fernandes-Lopes Rovan Fernandes-Lopes Fabiano Mesquita Águeda M. Turatti Jorge L. Pimentel-Junior Santiago Sandoval-Gutiérrez Carlos A. Parra-Vargas Ingeniería metal resistivity paramagnetic order magnetic ray diffraction Cobaltite-like materials having metal-insulator transitions are relevant in the consumer electronics market. In this work, we present the structural, magnetic, and electrical properties of Ba1-xNaxCoO3 (with x = 0.25, 0.5, 0.75) cobaltite. All samples were synthesized using a solid-state reaction process. Their crystal structure was determined using X-ray diffraction (XRD) data by the Rietveld method, which showed that all the samples were crystallized in the orthorhombic space group C2221 (N.° 20). The microstructure of the sintered samples was characterized by scanning electron microscopy (SEM). The magnetic susceptibility measurements confirmed a paramagnetic behavior for x ≥ 0.5 in the temperature range that was used. Likewise, a broad peak around 33 K in the sample x = 0.25, and characteristic of antiferromagnetic behaviors were observed. On the other hand, resistivity contributed to determining the insulating behavior of samples where x = 0.5 and x = 0.75. In contrast, at low sodium content (x = 0.25), a metal-insulator transition was observed with transition temperature near 105 K. 2021 artículo científico 1657-4583 https://www.redalyc.org/articulo.oa?id=553772639010 https://www.redalyc.org/journal/5537/553772639010/ https://www.redalyc.org/journal/5537/553772639010/html/ https://www.redalyc.org/journal/5537/553772639010/553772639010.epub https://www.redalyc.org/journal/5537/553772639010/movil 10.18273/revuin.v20n4-2021010 en http://www.redalyc.org/revista.oa?id=5537 Revista UIS Ingenierías application/pdf Universidad Industrial de Santander Revista UIS Ingenierías (Colombia) Num.4 Vol.20