TY - JOUR
T1 - Structural and electrical properties of Li5TlO4
AU - Nagano, M.
AU - Greenblatt, M.
N1 - Funding Information:
We thank Dr. Robert Caracciolo for the XPS measurements, Dr. S.D. Gunapala for the RBS spectra, and Prof. W.H. McCarrol for valuable comments on the first draft of the manuscript. This research was supported part by the Office of Naval Research. The automatic Scintag powder diffractometer was purchased partly from an NSF DMR-8408266 Material Science Division Instrumental grant, and from funds provided by Rutgers University FAS and the Research Council.
PY - 1987/7
Y1 - 1987/7
N2 - The structural and electrical properties of Li5TlO5 were investigated. Li5TlO4 was found to be sensitive to moisture or CO2 in ambient environment. An electronically conducting brown to black thin layer, mainly composed of LiTlO2, was formed on the surface of Li5TlO4 pellets during sintering and impedance measurement. The electronic conduction exceeded ionic conduction below 150°C. Above 150°C, ionic conduction became predominant with a maximum conductivity of 1×10-3 (Ω-cm)-1 at 250°C for one of the samples. This value is high in comparison with the conductivity of other Li5MIIIO4 isomorphs Above 400°C, a large increase in the conductivity, probably due to the presence of LiOH, was observed. Sample-to-sample differences in conductivity and variation during heating-cooling cycles were noted. These results are discussed in relation to the structural and thermal properties.
AB - The structural and electrical properties of Li5TlO5 were investigated. Li5TlO4 was found to be sensitive to moisture or CO2 in ambient environment. An electronically conducting brown to black thin layer, mainly composed of LiTlO2, was formed on the surface of Li5TlO4 pellets during sintering and impedance measurement. The electronic conduction exceeded ionic conduction below 150°C. Above 150°C, ionic conduction became predominant with a maximum conductivity of 1×10-3 (Ω-cm)-1 at 250°C for one of the samples. This value is high in comparison with the conductivity of other Li5MIIIO4 isomorphs Above 400°C, a large increase in the conductivity, probably due to the presence of LiOH, was observed. Sample-to-sample differences in conductivity and variation during heating-cooling cycles were noted. These results are discussed in relation to the structural and thermal properties.
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U2 - 10.1016/0167-2738(87)90025-7
DO - 10.1016/0167-2738(87)90025-7
M3 - Article
AN - SCOPUS:0023382839
SN - 0167-2738
VL - 24
SP - 169
EP - 174
JO - Solid State Ionics
JF - Solid State Ionics
IS - 2
ER -