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1
Content available Modelling of Dielectric Properties of BiNbO4-Based Microwave Ceramics
100%
Czekaj D. , Lisińska-Czekaj A. , Garbarz-Glos B. , Bąk W. , Czekaj D. , Lisińska-Czekaj A. , Garbarz-Glos B. , Bąk W.
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nr 3
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Content available Alternative, Direct Synthesis Method of the Ceramic Solid Solutions Based on BaTiO3 Through a High Energy Ball Milling
100%
Bąk W. , Dulian P. , Garbarz-Glos B. , Czekaj D. , Lisińska-Czekaj A. , Bąk W. , Dulian P. , Garbarz-Glos B. , Czekaj D. , Lisińska-Czekaj A.
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nr 2
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Content available X-Ray Diffraction Study of Bismuth Layer-Structured Multiferroic Ceramics
100%
Lisińska-Czekaj A. , Czekaj D. , Garbarz-Glos B. , Bąk W. , Kuźniarska-Biernacka I. , Lisińska-Czekaj A. , Czekaj D. , Garbarz-Glos B. , Bąk W. , Kuźniarska-Biernacka I.
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nr 2
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Content available X-Ray Diffraction Study of Bismuth Layer-Structured Multiferroic Ceramics
99%
Lisińska-Czekaj A. , Czekaj D. , Garbarz-Glos B. , Bąk W. , Kuźniarska-Biernacka I.
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tom Vol. 65, iss. 2
811--815
EN
Goal of the present research was to apply a solid state reaction route to fabricate bismuth layer-structured multiferroic ceramics described with the formula Bi5FeTi3O15 and reveal the influence of processing conditions on its crystal structure and phase composition. Simple oxide powders Bi2O3, TiO2 and Fe2O3 were used to fabricate Aurivillius-type bismuth layer-structured ferroelectrics. Pressureless sintering in ambient air was employed and the sintering temperature was TS = 900°C, TS = 1000°C and TS = 1040°C. The phase composition as well as crystal structure of ceramics sintered at various processing conditions was examined with powder X-ray diffraction method at room temperature. The Rietveld refinement method was applied for analysis of X-ray diffraction data. It was found that ceramics adopted orthorhombic structure Cmc21. The unit cell parameters of bismuth layer-structured multiferroic ceramics increased slightly with an increase in sintering temperature.
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Content available The Application of the Mechanochemical Synthesis for the Preparation of Advanced Ceramics Based on Barium Titanate
85%
Garbarz-Glos B. , Bąk W. , Budziak A. , Dulian P. , Lisińska-Czekaj A. , Czekaj D.
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tom Vol. 65, iss. 4
1391--1396
EN
In the present study, the lead-free BaTi1-x Zrx O3 (for x = 0, 0.05 and 0.15) ceramics were prepared by High-Energy Ball Milling and heat treatments. The performed X-ray, SEM and EDS measurements confirmed high purity, good quality and the expected quantitative composition of the obtained samples. The study of dielectric properties was performed by means of broadband dielectric spectroscopy at the frequency ranging from 0.1 Hz to 10 MHz. The obtained measurement data, analyzed in accordance with the Arrhenius formalism demonstrated the presence of relaxation type dielectric mechanisms. The impedance answer of studied ceramic materials indicated the presence of two relaxation processes: one with a dominant resistive component and the other with a small capacitive component. The observed dielectric relaxation process is temperature dependent and has a “non-Debye” character.
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Content available The application of the Mechanochemical Synthesis for the Preparation of Advanced Ceramics Based on Barium Titanate
80%
Garbarz-Glos B. , Bąk W. , Budziak A. , Dulian P. , Lisińka-Czekaj A. , Czekaj D. , Garbarz-Glos B. , Bąk W. , Budziak A. , Dulian P. , Lisińka-Czekaj A. , Czekaj D.
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nr 4
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Content available Influence of Sn and Pb Ions Substitutions on Dielectric Properties of Barium Titanate
71%
Bąk W. , Kajtoch C. , Ptaszek S. , Lisińska-Czekaj A. , Czekaj D. , Ziętek D. , Glos T. , Garbarz-Glos B.
Archives of Metallurgy and Materials
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2016
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tom Vol. 61, iss. 2A
905--908
EN
The results of the microstructural and dielectric measurements of (Ba1-xPbx)(Ti1-xSnx)O3 (BPTSx) (x = 0, 0.05, 0.10, 0.30) polycrystalline samples are presented. The samples were obtained by means of a high temperature synthesis and their expected stoichiometry was confirmed by energy dispersive spectroscopy (EDS) measurements. The dielectric properties of BPTSx were studied with the use of broadband dielectric spectroscopy. The measurements over a wide range of temperature (from 140 K to 600 K) and frequency (from 0.1 Hz to 10 MHz) were performed. The experimental results indicate an influence of Pb ions in a sublattice A and Sn ions in a sublattice B substitution on paraelectric - ferroelectric phase transition parameters. Diffused phase transitions from a paraelectric to ferroelectric state (for x = 0.10 and x = 0.30) were observed. From the electric modulus measurements in the frequency domain the relaxation times and the activation energy were determined.
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Content available Low Temperature Broad Band Dielectric Spectroscopy of Multiferroic Bi6Fe2Ti3O18 Ceramics
71%
Lisińska-Czekaj A. , Rerak M. , Czekaj D. , Lubina M. , Garbarz-Glos B. , Bąk W.
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