Sol-gel synthesis and characterization of barium titanate powders
| Autor: | Kareiva, A., Tautkus, S., Rapalaviciute, R., Jørgensen, Jens-Erik, Lundtoft, Britta |
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| Jazyk: | angličtina |
| Rok vydání: | 1999 |
| Předmět: | |
| Zdroj: | Kareiva, A, Tautkus, S, Rapalaviciute, R, Jørgensen, J-E & Lundtoft, B 1999, ' Sol-gel synthesis and characterization of barium titanate powders ', Journal of Materials Science, vol. 34, no. 19, pp. 4853-4857 . https://doi.org/10.1023/A:1004615912473 |
| Popis: | A simple aqueous sol-gel route has been refined to prepare yttrium-doped barium titanate powders. Thermal decomposition of the fabricated gel was studied by means of DTA/TGA measurements. The precursor gel was intermediate calcined at 600 degrees C, and the final synthesis products were characterized by IR spectroscopy, X-ray powder diffraction and scanning electron microscopy. The barium titanate obtained from the calcination of the gel at 1300 degrees C was a tetragonal phase, and showed a positive temperature coefficient of resistivity (PTCR) effect which depends on sample cooling rate during the final heat treatment. (C) 1999 Kluwer Academic Publishers. |
| Databáze: | OpenAIRE |
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