Preparation and characterization of nanosized SrBi2Nb2O9 powder by the combustion synthesis


Autoria(s): Zanetti, S. M.; Santiago, E. I.; Bulhoes, LOS; Varela, José Arana; Leite, E. R.; Longo, Elson
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/06/2003

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