MATEC Web Conf.
Volume 242, 2018International Conference on Advanced Functional Materials and Composites (ICAFMC2018)
|Number of page(s)||5|
|Published online||05 December 2018|
Dielectric properties of the PFN ceramics obtained different chemical-wet technology and sintering by hot pressing method
University of Silesia in Katowice, Faculty of Computer Science and Material Science, Institute of Technology and Mechatronics 12, Żytnia St., 41–200, Sosnowiec, Poland
The paper shows three kinds of chemical-wet technology synthesis of the ferroelectric-ferrimagnetic PbFe1/2Nb1/2O3 materials and technology process of the ceramic samples sintered by hot pressing method. In the technological process of the PFN powders were used follows precursors: lead acetate trihydrate and niobium ethoxide while an iron-related components were changed: iron nitrate obtained by first sol-gel technology (PFN-n), iron oxalate obtained by second sol-gel technology (PFN-ox) and iron citrate obtained by third technology (PFN-c). XRD, SEM tests and temperature measurements of dielectric properties of the ceramic samples were carried out. The SEM microstructure tests of the PFN ceramic samples confirm the properly conducted technological processes. The best dielectric properties of the PFN ceramic samples were obtained for third technology using iron citrate precursor. But, this method of the PFN ceramic powder requires minimization of a pyrochlore phase and reduction porosity of the ceramic samples.
© The Authors, published by EDP Sciences, 2018
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