Publicação: Enhanced electrical behavior in Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramics
| dc.contributor.author | Felix, A. A. [UNESP] | |
| dc.contributor.author | Saska, L. A. [UNESP] | |
| dc.contributor.author | Bezzon, V. D.N. | |
| dc.contributor.author | Cilense, M. [UNESP] | |
| dc.contributor.author | Ramirez, M. A. [UNESP] | |
| dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
| dc.contributor.institution | Universidade Federal do ABC (UFABC) | |
| dc.date.accessioned | 2019-10-06T16:27:27Z | |
| dc.date.available | 2019-10-06T16:27:27Z | |
| dc.date.issued | 2019-08-01 | |
| dc.description.abstract | Polycrystalline Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramics were studied as a function of the strontium content in order to understand its effects on the structure, microstructure and electrical characteristics of these compounds. Our results showed that the Sr 2+ cationic substitution into the A sites of the initial CaCu 3 Ti 4 O 12 (CCTO) phase leads to crystalline phases with specific stoichiometry. Although the same space group is observed, the cationic substitution induces larger lattice parameter, phase density, and chemical bonding length when compared to the initial CCTO phase. Microstructure results indicated that the strontium content has a significant influence on sample sinterability leading to changes in grain growth and densification process. The non-ohmic characterization showed that the Ca 0.5 Sr 0.5 Cu 3 Ti 4 O 12 phase exhibits improved breakdown electric field (32 kV/cm), non-linear coefficient (269) and lower leakage current (26 μA), while the SrCu 3 Ti 4 O 12 phase presents permittivity of about 5000 at 1 kHz. | en |
| dc.description.affiliation | Physical Chemistry Department Chemistry Institute São Paulo State University (UNESP) | |
| dc.description.affiliation | São Paulo State University (UNESP) Faculty of Engineering of Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, 12.516-410 | |
| dc.description.affiliation | Center for Natural and Human Sciences (CCNH) Federal University of ABC (UFABC) | |
| dc.description.affiliationUnesp | Physical Chemistry Department Chemistry Institute São Paulo State University (UNESP) | |
| dc.description.affiliationUnesp | São Paulo State University (UNESP) Faculty of Engineering of Guaratinguetá, Av. Dr. Ariberto Pereira da Cunha 333, Portal das Colinas, 12.516-410 | |
| dc.description.sponsorship | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | |
| dc.description.sponsorshipId | CNPq: 165902/2015-9 | |
| dc.format.extent | 14305-14311 | |
| dc.identifier | http://dx.doi.org/10.1016/j.ceramint.2019.04.141 | |
| dc.identifier.citation | Ceramics International, v. 45, n. 11, p. 14305-14311, 2019. | |
| dc.identifier.doi | 10.1016/j.ceramint.2019.04.141 | |
| dc.identifier.issn | 0272-8842 | |
| dc.identifier.scopus | 2-s2.0-85064742324 | |
| dc.identifier.uri | http://hdl.handle.net/11449/189027 | |
| dc.language.iso | eng | |
| dc.relation.ispartof | Ceramics International | |
| dc.rights.accessRights | Acesso aberto | |
| dc.source | Scopus | |
| dc.subject | Ca 1-x Sr x Cu 3 Ti 4 O 12 | |
| dc.subject | Crystalline structure | |
| dc.subject | Dielectric response | |
| dc.subject | Non-ohmic behavior | |
| dc.title | Enhanced electrical behavior in Ca 1-x Sr x Cu 3 Ti 4 O 12 ceramics | en |
| dc.type | Artigo | |
| dspace.entity.type | Publication | |
| unesp.campus | Universidade Estadual Paulista (UNESP), Instituto de Química, Araraquara | pt |
| unesp.department | Físico-Química - IQAR | pt |