Preparation and characterization of nanosized SrBi2Nb2O9 powder by the combustion synthesis
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/06/2003
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Resumo |
This work presents the preparation of SrBi2Nb2O9 (SBN) directly by the combustion synthesis. Strontium nitrate, niobium ammonium oxalate (NH4H2[NbO-(C2O4)(3)].3H(2)O) and bismuth oxide were used as oxidant reactants and urea as fuel. The influence of the fuel was evaluated by the addition of different fuel amounts (50%, 100%, 200% and 300%), 100% being the stoichiometric proportion. The XRD patterns showed that the SBN perovskite crystallized as the majority phase. The as-synthesized stoichiometric powder presented a specific surface area of around 13 m(2)/g and a mean grain size of around 16 nm. Dilatometric measurements showed that the maximum sintering rate occurs at 1275degreesC. The determination of the ferroparaelectric transition showed a Curie temperature (T-c) of 429degreesC. (C) 2002 Elsevier B.V. B.V. All rights reserved. |
Formato |
2812-2816 |
Identificador |
http://dx.doi.org/10.1016/S0167-577X(02)01380-0 Materials Letters. Amsterdam: Elsevier B.V., v. 57, n. 19, p. 2812-2816, 2003. 0167-577X http://hdl.handle.net/11449/39165 10.1016/S0167-577X(02)01380-0 WOS:000183268500009 |
Idioma(s) |
eng |
Publicador |
Elsevier B.V. |
Relação |
Materials Letters |
Direitos |
closedAccess |
Palavras-Chave | #combustion synthesis #SrBi2Nb2O9 #powder #ferroelectric #bismuth layer |
Tipo |
info:eu-repo/semantics/article |