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Efeito do dopante Ba sobre as propriedades estruturais e microestruturais de ceramicas Bi0.5Na0.5TiO3
dc.contributor.author | Santos, Valdeci Bosco dos |
dc.contributor.author | Cerdeiras Montero, Elena |
dc.contributor.author | Mestres Vila, Lourdes |
dc.contributor.author | Machado, Rodrigo |
dc.contributor.author | Ochoa Guerrero, Diego A. |
dc.contributor.author | García García, José Eduardo |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física |
dc.date.accessioned | 2016-05-05T18:00:33Z |
dc.date.issued | 2015 |
dc.identifier.citation | Bosco, V., Cerdeiras, E., Mestres, L., Machado, R., Ochoa, D. A., Garcia, J. E. Efeito do dopante Ba sobre as propriedades estruturais e microestruturais de ceramicas Bi0.5Na0.5TiO3. A: Congreso Brasileiro de Cerâmica. "59º Congreso Brasileiro de Cerâmica - Proceeding Book". Aracajú: 2015, p. 1868-1875. |
dc.identifier.uri | http://hdl.handle.net/2117/86661 |
dc.description.abstract | Recently, Bi0,5Na0,5TiO3 (BNT) based ceramics has been widely studied as one promising material lead-free for piezoelectric applications. The Ba addition in BNT ((Bi0,5Na0,5)1-xBaxTiO3 - BNT-xBT) has attracted considerable attention due to the existence of a rhombohedral-tetragonal morphotropic phase boundary (MPB) near x = 0.06, where it shows maximized piezoelectric properties. In this study, BNT-XBT ceramics near the MPB (0.05 = x = 0.07), were prepared by solid-state reaction method. The effect of Ba doping on structure and microstructure of the BNT-xBT ceramics was investigated. The X-ray diffraction results show MPB for 0.06 = x <0.07. Raman spectroscopy suggests tetragonal symmetry, wich presence of the band at 300 cm-1 for composition x = 0.07, confirming the presence of the MPB region below this composition. Scanning electron microscopy images indicate apparent decrease of the grain size with increasing Ba concentration. |
dc.format.extent | 8 p. |
dc.language.iso | por |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Física |
dc.subject.lcsh | Piezoelectric ceramics |
dc.subject.other | piezoelectric ceramics |
dc.subject.other | Ba-doping |
dc.subject.other | Bi0 |
dc.subject.other | 5Na0 |
dc.subject.other | 5TiO3 |
dc.subject.other | structural properties |
dc.title | Efeito do dopante Ba sobre as propriedades estruturais e microestruturais de ceramicas Bi0.5Na0.5TiO3 |
dc.type | Conference report |
dc.subject.lemac | Ceràmica piezoelèctrica |
dc.contributor.group | Universitat Politècnica de Catalunya. CEMAD - Caracterització Elèctrica de Materials i Dispositius |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 17510523 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Bosco, V.; Cerdeiras, E.; Mestres, L.; Machado, R.; Ochoa, D. A.; Garcia, J. E. |
local.citation.contributor | Congreso Brasileiro de Cerâmica |
local.citation.pubplace | Aracajú |
local.citation.publicationName | 59º Congreso Brasileiro de Cerâmica - Proceeding Book |
local.citation.startingPage | 1868 |
local.citation.endingPage | 1875 |