Multilayer Ceramic Capacitors Based on the PMN-PT-PFN Solid Solution

Abstract:

We present the technology of obtaining and the main properties of multilayered ceramic capacitors (MLCC) based on the PMN-PT-PFN solid solution. PMN-PT-PFN is the abbreviation of the material with general formula (1-y)[(1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3]-yPb(Fe1/2Nb1/2)O3. In our work the investigated material was PMN-PT-PFN with x=0.25, y=0.1 i.e. 0.9(0.75PMN-0.25PT)-0.1PFN. The powder of 0.9(0.75PMN-0.25PT)-0.1PFN has been obtained in three steps. In first step we obtained MgNb2O6. In second step FeNbO4 was obtained. In final third step the 0.9(0.75PMN-0.25PT)-0.1PFN was obtained from mixed powders MgNb2O6, FeNbO4, PbO and TiO2. Thick film pastes for obtaining MLCC were prepared by mixing of PMN-PT-PFN powder with organic vehicle and firing in furnace in the temperature range up to 1050°C. Platinum paste has been used as electrodes. The thickness of single layer was about 45 µm (including electrodes). For obtained MLCC XRD investigations were performed as well as investigations of microstructure, EDS and main dielectric properties.

• Periodical: Advances in Science and Technology (Volume 77)
• Pages: 41-46
• DOI: https://doi.org/10.4028/www.scientific.net/AST.77.41
• Online since: September 2012
• Authors: Ryszard Skulski, Paweł Wawrzała, Dariusz Bochenek, Jan Kulawik, Dorota Szwagierczak, Przemysław Niemiec
• Keywords: Lead Magnetoniobate, Multilayer Ceramic Capacitor (MLCC), Relaxor

References

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