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dc.contributor.author
Alburquenque, D.
dc.contributor.author
Troncoso, L.
dc.contributor.author
Denardin, J.C.
dc.contributor.author
Butera, Alejandro Ricardo
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dc.contributor.author
Padmasree, K. D.
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Ortiz, J.
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Herrera, F.
dc.contributor.author
Marco, J. F.
dc.contributor.author
Gautier, J. L.
dc.date.available
2018-09-17T18:47:05Z
dc.date.issued
2016-02
dc.identifier.citation
Alburquenque, D.; Troncoso, L.; Denardin, J.C.; Butera, Alejandro Ricardo; Padmasree, K. D.; et al.; Structural and physicochemical properties of nickel manganite NiMn2O4-δsynthesized by sol-gel and ultra sound assisted methods; Elsevier Science Sa; Journal of Alloys and Compounds; 672; 2-2016; 307-316
dc.identifier.issn
0925-8388
dc.identifier.uri
http://hdl.handle.net/11336/59932
dc.description.abstract
In this work we present the structural, magnetic and surface characterization of the ceramic nickel manganite oxide NiMn2O4-δsynthesized by two methods: sol-gel and ultrasound-assisted sol-gel using nitrate salts as precursors. We have characterized the non-stoichiometric samples NiMn2O4-δusing different physicochemical analyses. X-ray diffraction and Rietveld refinement of the X-ray data indicated that the samples crystallize in the Fd3m space group characteristic of cubic spinel-related oxides. The specific surface area of the oxides was 1.3 m2/g (SG) and 16.3 m2/g (UASG). SEM results showed particle agglomerates of 1.05 μm (SG) and 0.85 μm (UASG). Temperature dependence magnetization measurements were performed and a ferrimagnetic transition was identified at 103 K and 105 K depending on the preparation method (SG and UASG, respectively). The observed Curie constant was found to vary from 7.4 to 7.7 cm3 K mol−1and hysteretic magnetization vs. applied field curves at different temperatures were obtained. XPS studies of these oxides reveal the presence of Ni2+, Mn2+, Mn3+and Mn4+ions at the surface. A probable ionic distribution as a function of the synthesis method is proposed.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science Sa
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Magnetic Properties
dc.subject
Nickel Manganite
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Spinel Oxides
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X-Ray Diffraction
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Xps
dc.subject.classification
Otras Ciencias Químicas
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dc.subject.classification
Ciencias Químicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Structural and physicochemical properties of nickel manganite NiMn2O4-δsynthesized by sol-gel and ultra sound assisted methods
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-09-14T14:01:45Z
dc.journal.volume
672
dc.journal.pagination
307-316
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Alburquenque, D.. Universidad de Santiago de Chile; Chile
dc.description.fil
Fil: Troncoso, L.. Universidad de Santiago de Chile; Chile
dc.description.fil
Fil: Denardin, J.C.. Universidad de Santiago de Chile; Chile
dc.description.fil
Fil: Butera, Alejandro Ricardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina
dc.description.fil
Fil: Padmasree, K. D.. Consejo Superior de Investigaciones Científicas; España
dc.description.fil
Fil: Ortiz, J.. Universidad de Santiago de Chile; Chile
dc.description.fil
Fil: Herrera, F.. Universidad de Santiago de Chile; Chile
dc.description.fil
Fil: Marco, J. F.. Consejo Superior de Investigaciones Científicas; España
dc.description.fil
Fil: Gautier, J. L.. Universidad de Santiago de Chile; Chile
dc.journal.title
Journal of Alloys and Compounds
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1016/j.jallcom.2016.02.090
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0925838816303590
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