La0.59Li0.24TiO3 ceramics obtained by spark plasma sintering: electric behavior analysis

• Tipo: Artigo em Revista Científica Internacional
• Data: 2019

Autores

Pereira, JS (Autor) Outra; Guerrero, F (Autor) Outra; Romaguera Barcelay, Y (Autor) Outra; Anglada Rivera, J (Autor) Outra; Sales Jr, JCC (Autor) Outra; Silva, RS (Autor) Outra; Zulueta, Y (Autor) Outra; Poyato, R (Autor) Outra; Gallardo, A (Autor) Outra; Almeida, A (Autor) FCUP; Agostinho Moreira, JA (Autor) FCUP; Leyet, Y (Autor) Outra

Revista

Título: Materials Research Express

Vol. 6

Editora: Institute of Physics Publishing

Indexação

ISI Web of Knowledge - 5 Citações

Scopus - 5 Citações

Outras Informações

ID Authenticus: P-00P-R2D

DOI: 10.1088/2053-1591/aae496

Abstract (EN): This work describes the electric study of Lithium lanthanum titanate (La0.59Li0.24TiO3) ceramics performed by Complex Impedance Spectroscopy. The nanoparticle powders have been synthesized through high energy ball milling and sintered via Spark Plasma Sintering technique. The experimental impedance data have been analyzed using the equivalent circuit model, the Extended Jonscher universal law and the derivative method. From these models, we have determined the dielectric response as well as the grain and grain boundary conductivity. The samples show ionic conductivity values between 10(-5) to 10(-4) S cm(-1) in the studied temperature range, and activation energy values 0.24 eV and 0.48 eV for grain and grain boundary, respectively. These results confirm the Li+ ions mobility through the crystalline structure of the material.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7