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| Numéro |
J. Phys. IV France
Volume 11, Numéro PR10, Décembre 2001
Journées d'Étude des Équilibres entre Phases
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|---|---|---|
| Page(s) | Pr10-109 - Pr10-113 | |
| DOI | https://doi.org/10.1051/jp4:20011015 | |
Journées d'Étude des Équilibres entre Phases
J. Phys. IV France 11 (2001) Pr10-109-Pr10-113
DOI: 10.1051/jp4:20011015
1 Institute for Technical Physics, Bd. Dimitrie Mangeron 47, Iasi 6600, Romania
2 Technical University Gh. Asachi, Faculty of Industrial Chemistry, Bd. Dimitrie Mangeron 71, Iasi 6600, Romania
© EDP Sciences 2001
J. Phys. IV France 11 (2001) Pr10-109-Pr10-113
DOI: 10.1051/jp4:20011015
On the possible pyrochlore to aurivillius phase transition in the complex oxide CaCd2Bi2Nb4O15
M.L. Craus1, I. Rusu2, A. Rusu2 and N. Apostolescu21 Institute for Technical Physics, Bd. Dimitrie Mangeron 47, Iasi 6600, Romania
2 Technical University Gh. Asachi, Faculty of Industrial Chemistry, Bd. Dimitrie Mangeron 71, Iasi 6600, Romania
Abstract
The sample CaCd2Bi2Nb4O15 was synthesised by the standard ceramic method, starting from a mixture of oxides heated up to 1250°C. The chemical composition indicate that the oxide could have an Aurivillius or a substituted pyrochlore structure. The X-ray diffraction and IR spectra suggest a phase transition from pyrochlore, at -196°C, to Aurivillius at room temperature. The DSC analyses performed in the temperature range 20-400°C did not evidenced major phase transitions for the material.
© EDP Sciences 2001