| Texto completo | |
| Autor(es): |
Almeida Silva, Igor d'Anciaes
;
Nieto-Munoz, Adriana M.
;
Rodrigues, Ana Candida M.
;
Eckert, Hellmut
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of the American Ceramic Society; v. 103, n. 7, p. 11-pg., 2020-01-25. |
| Resumo | |
This work reports structural and lithium-ion mobility studies in NASICON single- or multiple phase Li1+xMxGe2-x(PO4)(3) (M = Ga3+, Sc3+, Y3+) glass-ceramics using solid-state NMR techniques, X-ray powder diffraction, and impedance spectroscopy. X-ray powder diffraction data show the successful incorporation of Ga3+ and Sc3+ into the Ge4+ octahedral sites of the NASICON structure at the levels of x = 0.5 and 0.4, respectively. The glass-to-crystal transition was further characterized by multinuclear NMR and electrical conductivity measurements. Among the studied samples, the gallium-containing glass-ceramic presented the highest DC conductivity, 1.1 x 10(-4) S/cm at room temperature, whereas for the Sc-containing samples, the maximum room temperature conductivity that could be reached was 4.8 x 10(-6) S/cm. No indications of any substitution of Ge4+ by Y3+ could be found. (AU) | |
| Processo FAPESP: | 13/07793-6 - CEPIV - Centro de Ensino, Pesquisa e Inovação em Vidros |
| Beneficiário: | Edgar Dutra Zanotto |
| Modalidade de apoio: | Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs |