Structure and broadband impedance spectroscopy of Li1.3AlyYx−yTi1.7(PO4)3 (x=0.3; y=0.1, 0.2) solid electrolyte ceramics
| Autor: | J. Miškinis, V. Kazlauskienė, Z. Kanepe, Tomas Šalkus, J. Ronis, V. Venckutė, Antanas Feliksas Orliukas, Antonija Dindune, A. Lukauskas, A. Kežionis |
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| Rok vydání: | 2012 |
| Předmět: |
Materials science
Analytical chemistry General Chemistry Electrolyte Atmospheric temperature range Condensed Matter Physics Spectral line Dielectric spectroscopy X-ray photoelectron spectroscopy Electrical resistivity and conductivity visual_art visual_art.visual_art_medium General Materials Science Ceramic Stoichiometry |
| Zdroj: | Solid State Ionics. 225:620-625 |
| ISSN: | 0167-2738 |
| DOI: | 10.1016/j.ssi.2012.05.011 |
| Popis: | Li 1.3 Al y Y x − y Ti 1.7 (PO 4 ) 3 (x = 0.3; y = 0.1, 0.2) solid electrolyte compounds were synthesized by solid state reaction and studied by X-ray diffraction. At room temperature the compounds belong to a rhombohedral symmetry (space group R 3 ¯ c) with six formula units in the unit cell. Ti 2p, O 1s, P 2p, Li 1s, Y 3d, and Al 2p core level XP spectra at Li 1.3 Al y Y x − y Ti 1.7 (PO 4 ) 3 (x = 0.3; y = 0.1, 0.2) ceramic surfaces have been determined by XPS. The measurements of the electrical properties of the ceramic samples in the frequency range 10 Hz–1 MHz were carried out by a two probe method and a four probe method. The measurements in the microwave range (3 · 10 5 –3 · 10 9 ) Hz were performed in a coaxial line, the part of the inner conductor which was replaced by the sample. The investigation of the electrical properties of the ceramic samples was carried out in air in the temperature range (300 to 700) K. The increase of the stoichiometric factor y of the compounds leads to the increase in the total and bulk conductivities of ceramics and decreases their activation energies. |
| Databáze: | OpenAIRE |
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