Research Article
Sol-Gel Synthesis, X-Ray Diffraction Studies, and Electric Conductivity of Sodium Europium Silicate
Table 4
DC and AC conductivity and activation energy for the samples.
| Composition | (500°C), | (600°C), | (700°C), | , eV | mScm−1 | mScm−1 | mScm−1 |
| NaEu9(SiO4)6O2 (direct current) | 0.547 | 1.887 | 3.120 | 0.62 | NaEu9(SiO4)6O2 (1000 Hz) | 1.257 | 2.681 | 4.059 | 0.77 | La9.33Si6O26 [3] | 0.023 | — | 0.26 | 0.84 | La9Mg0.5Si6O26 [3] | 0.021 | — | — | 0.98 | La8.67SrSi6O26 [3] | 0.083 | — | — | 0.87 | La8.67CaSi6O26 [3] |
0.058 | — | — | 0.87 |
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