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PbFe1/2Nb1/2O3 ceramics as a base material for electromechanical transducers

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Języki publikacji
EN
Abstrakty
EN
PbFe1/2Nb1/2O3 (PFN) material of perovskite structure has been rising interest because it connects both ferroelectric and antiferromagnetic properties. The paper presents tests of PFN ceramics obtained as a result of sintering simple oxides. As comparison, the base composition of the ceramics and composition with lithium admixture was synthesized. Densification was carried out using two methods: conventional sintering and hot pressing. XRD patterns, SEM micrographs of fractures surfaces, dielectric and electromechanical properties were performed. Admixing of PFN ceramics with a little amount of lithium allowed obtaining ceramics with better set of parameters from the point of view of their practical usage. The method of densification by hot pressing additionally improves these properties.
Twórcy
autor
autor
  • University of Silesia, Faculty of Computer and Materials Science, Department of Materials Science, Śnieżna 2, 41-200 Sosnowiec, Poland, wawrzala@ultra.cto.us.edu.pl
Bibliografia
  • [1] DAS R. N., PRAMANIK P., Single step chemical synthesis of lead based relaxor ferroelectric niobate fine powders, NanoStructured Materials, 11, 3, 323.330 (1999).
  • [2] GAO X., XUE J., WANG J., Sequential combination of constituent oxides in the synthesis of Pb(Fe1=2Nb1=2)O3 by mechanical activation, J. Am. Ceram. Soc., 85, 565.572 (2002).
  • [3] RAYMOND O., FONT R., SUAREZ N., PORTALLES J., SIQUEIROS J.M., Effects of two kinds of FeNbO4 precursors in the obtainment and dielectric properties of PFN ceramics, Ferroelectrics, 294, 141.154 (2003).
  • [4] SEKAR M.M. A., HALLIYAL A., Low-temperature synthesis, characterization, and properties of lead-based ferroelectric niobates, J. Am. Ceram. Soc., 81, 380.388 (1998).
  • [5] SINGH K., BAND S. A., KINGE W. K., Effect of sintering temperature on dielectric properties of Pb(Fe1=2Nb1=2)O3 perovskite material, Ferroelectrics, 306, 179.185 (2004).
  • [6] UCHINO K., Ferroelectric devices, Marcel Dekker, New York 2000.
  • [7] WANG J. I., MBONYE M. K., ZHANG C., Dielectric, piezoelectric and magnetic properties of ferroelectromagnet Pb(Fe1=2Nb1=2)O3 (PFN) ceramics, International Journal of Modern Physics B, 17, 3732.3737 (2003).
  • [8] WANG J. T., ZHANG C., SHEN Z. X., FENG Y., Magnetic field effect on dielectric properties of Pb(Fe1=2Nb1=2)O3 single crystal, Ceramics International, 30, 1627.1630 (2004).
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BAT8-0003-0050
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