Soft chemistry synthesis of the perovskite CaCu3Ti4O12 |
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| Authors: | Loï c Marchin, Sophie Guillemet-Fritsch,Bernard Durand |
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| Affiliation: | aCentre Interuniversitaire de Recherche et d'Ingénierie des Matériaux (CIRIMAT/LCMIE), Université Paul Sabatier, Bât. 2R1, 118 route de Narbonne, 31062 Toulouse Cedex 9, France |
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| Abstract: | The perovskite CaCu3Ti4O12 (CCT) has been obtained after calcination of oxalate precursors at 900–1000 °C in air. Those precursors are prepared using a soft chemistry method, the coprecipitation. The oxalate powders consist of disk-like particles of 2–3 μm diameter and 300–400 nm thickness. By varying the ratio of the initial amounts of metal chlorides, additional phases (CaTiO3, TiO2 and CuO) could be obtained besides CCT. The corresponding multiphased ceramics present improved dielectric properties. |
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| Keywords: | Oxalates Oxides Coprecipitation Chemical synthesis CaCu3Ti4O12 Capacitor |
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