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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
dc.subject Ba0.5Sr0.5Fe0.8M0.2O3-δ (M = Ni, Cu, Zn)
dc.subject RESISTIVITY MEASUREMENTS
dc.subject.classification Recubrimientos y Películas
dc.subject.classification Ingeniería de los Materiales
dc.subject.classification 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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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)