Crossref journal-article
Wiley
Journal of the American Ceramic Society (311)
Abstract

Pb(Fe1/2Nb1/2)O3(PFN) has been successfully synthesized via a novel mechanical activation of mixed oxides and columbite precursor consisting of lead oxide and FeNbO4. A nanocrystalline perovskite phase 5–15 nm in crystallite size was formed after 30 h of mechanical activation at room temperature for both types of starting materials. However, the nanocrystalline PFN phase derived from the mixed oxides of PbO, Fe2O3, and Nb2O5is unstable, and develops pyrochlore phases when calcined at 500°–900°C, while no pyrochlore phase is observed for the material derived from the columbite precursor consisting of PbO and FeNbO5. Different sintering behavior and dielectric properties were also observed between the two types of PFN. These differences are accounted for by the compositional inhomogeneity in the material derived from the mixed oxides, as was revealed by Raman spectroscopic studies. This suggests that mechanical activation is analogous to thermal activation, where the phase development is strongly dependent on the sequence of combining the constituent oxides.

Bibliography

Gao, X., Xue, J., Wang, J., Yu, T., & Shen, Z. X. (2002). Sequential Combination of Constituent Oxides in the Synthesis of Pb(Fe1/2Nb1/2)O3by Mechanical Activation. Journal of the American Ceramic Society, 85(3), 565–572. Portico.

Authors 5
  1. Xingsen Gao (first)
  2. Junmin Xue (additional)
  3. John Wang (additional)
  4. Ting Yu (additional)
  5. Ze Xiang Shen (additional)
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Dates
Type When
Created 15 years, 1 month ago (July 23, 2010, 7:21 a.m.)
Deposited 1 year, 9 months ago (Nov. 22, 2023, 6:57 p.m.)
Indexed 1 year, 2 months ago (June 27, 2024, 3:48 a.m.)
Issued 23 years, 5 months ago (March 1, 2002)
Published 23 years, 5 months ago (March 1, 2002)
Published Online 20 years, 8 months ago (Dec. 20, 2004)
Published Print 23 years, 5 months ago (March 1, 2002)
Funders 0

None

@article{Gao_2002, title={Sequential Combination of Constituent Oxides in the Synthesis of Pb(Fe1/2Nb1/2)O3by Mechanical Activation}, volume={85}, ISSN={1551-2916}, url={http://dx.doi.org/10.1111/j.1151-2916.2002.tb00133.x}, DOI={10.1111/j.1151-2916.2002.tb00133.x}, number={3}, journal={Journal of the American Ceramic Society}, publisher={Wiley}, author={Gao, Xingsen and Xue, Junmin and Wang, John and Yu, Ting and Shen, Ze Xiang}, year={2002}, month=mar, pages={565–572} }