Respuesta Ferro-Piezoeléctrica de (K,Na,Li)(Nb,Ta,Sb)O3 Poroso

KNL-NTS powder with (K0.44Na0.52Li 0.04)(Nb0.86Ta0.10Sb0.04)O 3 stoichiometry was prepared following the conventional ceramic method of mixing carbonates and oxides. KNL-NTS powder synthesis is carried out in solid state at 700°C for 3h. To obtain ceramic samples with different porosity the sinterin...

ver descrição completa

Detalhes bibliográficos
Autores: Barolin, Sebastián Andrés, De La Rubia, M. A., Terny, Cintia Soledad, Rubio Marcos, Fernando, de Sanctis, Oscar Alberto, Alonso, Roberto Emilio, Fernández Lozano, José Francisco, Defrutos Vaquerizo, José
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2014
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositório:CONICET Digital (CONICET)
Idioma:espanhol
OAI Identifier:oai:ri.conicet.gov.ar:11336/95926
Acesso em linha:http://hdl.handle.net/11336/95926
Access Level:Acceso aberto
Palavra-chave:FERROELECTRIC PROPERTIES
LEAD FREE PIEZOELECTRIC
POROSITY
https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
Descrição
Resumo:KNL-NTS powder with (K0.44Na0.52Li 0.04)(Nb0.86Ta0.10Sb0.04)O 3 stoichiometry was prepared following the conventional ceramic method of mixing carbonates and oxides. KNL-NTS powder synthesis is carried out in solid state at 700°C for 3h. To obtain ceramic samples with different porosity the sintering of pellets is carried out in air at different temperatures between 1088 and 1125°C for 2h. Structural and microstructural characterizations are performed by XRD and SEM and the degree and type of porosity is determined by mercury intrusion porosimetry. The influence of sintering temperature on the porosity and its consequence on both the ferroelectric hysteresis loops and the piezoelectric response was evaluated. The maximum densification is achieved at 1125°C and the best ferroelectric response is achieved in sintered pellets at 1125°C. Meanwhile, it was observed that pellets sintered in a lower temperature range (1094-1100°C) where porosity reaches values up to 15 % have good ferroelectric piezoelectric response, similar to that found in the sintered pellets to 1125°C.

Registros relacionados