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

• Type: Article in International Scientific Journal
• Date: 2019

Authors

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

Journal

Title: Materials Research Express

Vol. 6

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 5 Citations

Scopus - 5 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7