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dc.contributor.author
Basbus, Juan Felipe
dc.contributor.author
Prado, Fernando Daniel
dc.contributor.author
Caneiro, Alberto
dc.contributor.author
Mogni, Liliana Verónica
dc.date.available
2017-12-06T18:54:54Z
dc.date.issued
2014-02
dc.identifier.citation
Basbus, Juan Felipe; Prado, Fernando Daniel; Caneiro, Alberto; Mogni, Liliana Verónica; A comparative study of high temperature properties of cobalt-free perovskites; Springer; Journal Of Electroceramics; 32; 4; 2-2014; 311-318
dc.identifier.issn
1385-3449
dc.identifier.uri
http://hdl.handle.net/11336/29864
dc.description.abstract
Co-free perovskites with chemical composition Ba0.5Sr0.5Fe0.8M0.2O3-δ (M = Ni, Cu, Zn) were synthesized by the modified Pechini method, and their structure and microstructure were characterized by XRD and SEM. Oxygen content, electrical resistivity and Thermal Expansion Coefficient (TEC) were evaluated in air between room temperature and 900 °C. The high-temperature properties of these perovskites were compared with those of Co containing Ba0.5Sr0.5Fe0.8Co0.2O3-δ perovskite. The highest electrical conductivity was obtained for Ba0.5Sr0.5Fe0.8Cu0.2O3-δ, with values of 47.6 Scm−1 at 544 °C. This same composition also exhibits the highest oxygen vacancies concentration: 3-δ = 2.61 at room temperature. In contrast, the Ba0.5Sr0.5Fe0.8Zn0.2O3-δ, showed lower electrical conductivity suggesting that the Zn+2 ions block electron transport. Co-free perovskites seem to be stable at high temperatures for long term periods. However, these compounds suffered degradation at room temperature in samples stored in air.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Cobalt Free Perovskite
dc.subject
High Temperature Properties
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Ba0.5sr0.5fe0.8m0.2o3-Δ (M = Ni, Cu, Zn)
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Resistivity Measurements
dc.subject.classification
Recubrimientos y Películas
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Ingeniería de los Materiales
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
A comparative study of high temperature properties of cobalt-free perovskites
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-12-06T16:47:16Z
dc.identifier.eissn
1573-8663
dc.journal.volume
32
dc.journal.number
4
dc.journal.pagination
311-318
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Basbus, Juan Felipe. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Prado, Fernando Daniel. Universidad Nacional del Sur; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Caneiro, Alberto. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Mogni, Liliana Verónica. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Journal Of Electroceramics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10832-014-9901-9
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007%2Fs10832-014-9901-9


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