Preparation and ferroelectric properties of the AIIBi3Ti2NbO12 (AII = Sr, Pb) layered perovskite-like oxides

Preparation and ferroelectric properties of the AIIBi3Ti2NbO12 (AII = Sr, Pb) layered perovskite-like oxides

SrBi3Ti2NbO12 and PbBi3Ti2NbO12 ceramics were prepared by hot pressing. Both oxides were found to have a layered perovskite-like structure(a = b = 3.850 Å,c = 33.21 Å in the former anda = b = 3.865 Å,c = 33.52 Å in the latter) and undergo ferroelectric phase transitions at Tc = 441 and 570 K, respec...

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Veröffentlicht in:Inorganic materials 2000-02, Vol.36 (2), p.183-187
Hauptverfasser: Trifonov, I. A., Geguzina, G. A., Gagarina, E. S., Komarov, V. D., Leyderman, A. V., Shuvaeva, E. T., Shuvaev, A. T., Fesenko, E. G.
Format: Artikel
Sprache:eng
Schlagworte:
Ceramics
Ferroelectric materials
Ferroelectricity
Hot pressing
Perovskite structure
Perovskites
Phase transitions
Room temperature
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Zusammenfassung:SrBi3Ti2NbO12 and PbBi3Ti2NbO12 ceramics were prepared by hot pressing. Both oxides were found to have a layered perovskite-like structure(a = b = 3.850 Å,c = 33.21 Å in the former anda = b = 3.865 Å,c = 33.52 Å in the latter) and undergo ferroelectric phase transitions at Tc = 441 and 570 K, respectively. The dielectric constants of the ceramics are, respectively, 440 and 217 at room temperature and 600 and 870 at Tc.
ISSN:0020-1685
1608-3172
DOI:10.1007/BF02758025