Structural, microstructural and impedance spectroscopy study of functional ferroelectric ceramic materials based on barium titanate

Garbarz-Glos, B.; Bąk, W.; Antonova, M.; Pawlik, M.

doi:10.1088/1757-899x/49/1/012031

Cited by 24 publications

(9 citation statements)

References 12 publications

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“…An observed relaxation phenomenon is the non-Debye type due to the imperfections and inhomogeneity of the Nd 2 NiMnO 6 sample. For the Debye type relaxation, the test and theoretical data can be determined by using the software ZSIMP WIN version 2.0 [38,39]. In temperature range 25-125°C, the identical circuit obtained as the combination of two RQC (Q is a constant phase element) circuit and exhibited by two circles representing the contribution from grain and grain boundary effect.…”

Section: Nyquist Plotsmentioning

confidence: 99%

Structure, dielectric and electrical properties of relaxor lead-free double perovskite: Nd2NiMnO6

Das

Choudhary

2019

PAC

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In this paper, dielectric relaxor, impedance, AC conductivity and electrical modulus of double perovskite Nd 2 NiMnO 6 , prepared by a solid state reaction method and sintered at 1250°C, have been reported in the wide temperature (25-150°C) and frequency (1 kHz-1 MHz) ranges. From the preliminary X-ray structural analysis, it is found that the structure of the material is monoclinic. In the study of the temperature dependence of the dielectric constant, the relaxor behaviour of the material is observed. Such type of behaviour is explained by a modified Curie-Weiss and a Vogel-Fulcher law. By analysing Nyquist plots, the existence of grain and grain boundary effects is established. The non-Debye type of relaxation is investigated by the analysis of complex impedance and the modulus data. From the study of impedance data, it is found that the grain resistance is reduced with the increase in temperature indicating the existence of negative temperature coefficient of resistance (NTCR) behaviour in the material which also matches with temperature versus AC conductivity plots. From these results, it may be concluded that this compound may have extreme potential for different high temperature applications.

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Section: Nyquist Plotsmentioning

confidence: 99%

Structure, dielectric and electrical properties of relaxor lead-free double perovskite: Nd2NiMnO6

Das

Choudhary

2019

PAC

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“…Referring to previous studies [33], an equivalent circuit with three parallel RC elements in series is proposed, assigned to grains, grain boundaries and electrode interface, respectively. In the low frequency and high temperature range, there is an additional short inclined straight line in the impedance plots which is attributed to the electrode interface [34], However, Due to the measured temperature and frequency limit, additional short inclined straight lines are not observed in the impedance plots. Thus the two semicircular arcs of the impedance plot are employed as an equivalent circuit consisting of two parallel RC elements connected in series (Fig.…”

Section: Resultsmentioning

confidence: 89%

Microstructure effect on dielectric Properties of MgO-doped BaTiO3–BiYO3 ceramics

Huang

Liu

Hao

et al. 2015

Ceramics International

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“…The semicircle curve with a center on the real ¢ Z -axis indicates the ideal Debye type relaxation, which is the characteristic of an ideal material with grain homogeneity. But in ceramic materials with an inhomogeneity in the grain size and due to electromagnetic diffusion [27,28], semicircles get depressed and tilted to the real axis indicating the distribution of relaxation time [29]. Figure 6(a) represents the Z′∼Z″ plot for different compositions of x at 350°C.…”

Section: Impedance Spectroscopymentioning

confidence: 99%

Effect of cerium oxide addition on optical, electrical and dielectric characteristics of (Bi_0.5Na_0.5)TiO₃ ceramics

2018

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The composite ceramics, Bi 0.5 Na 0.5 TiO 3 −xCeO 2 (x=0, 0.05, 0.10, 0.15) with a general chemical composition (Bi 0.5 Na 0.5 )(Ti 1−x Ce x )O 3 were fabricated by using a solid state reaction ceramic technology. The detailed structural analysis using x-ray diffraction data exhibits the formation of composites of Bi 0.5 Na 0.5 TiO 3 (BNT) and CeO 2 in rhombohedral and cubic phase respectively. The Fourier transform infrared spectroscopy spectrums confirm the formation of compounds through the occurrence of characteristic peak corresponding to Ce-O, Ti-O and Bi-O bonds. With the increase in CeO 2 content in the composite, the optical band gap decreases from 2.97 eV (for x=0) to 2.45 eV for the sample (for x=0.15). The impedance analysis confirms the contribution of grains only to the polarization and conduction processes. Two phase change corresponding to ferroelectric to antiferroelectric, and then to the paraelectric is observed at around 350°C and 470°C respectively. The addition of CeO 2 in BNT significantly enhances the dielectric and ferroelectric properties with the decrease in loss tangent.

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Structural, microstructural and impedance spectroscopy study of functional ferroelectric ceramic materials based on barium titanate

Cited by 24 publications

References 12 publications

Structure, dielectric and electrical properties of relaxor lead-free double perovskite: Nd2NiMnO6

Structure, dielectric and electrical properties of relaxor lead-free double perovskite: Nd2NiMnO6

Microstructure effect on dielectric Properties of MgO-doped BaTiO3–BiYO3 ceramics

Effect of cerium oxide addition on optical, electrical and dielectric characteristics of (Bi_0.5Na_0.5)TiO₃ ceramics

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Structural, microstructural and impedance spectroscopy study of functional ferroelectric ceramic materials based on barium titanate

Cited by 24 publications

References 12 publications

Structure, dielectric and electrical properties of relaxor lead-free double perovskite: Nd2NiMnO6

Structure, dielectric and electrical properties of relaxor lead-free double perovskite: Nd2NiMnO6

Microstructure effect on dielectric Properties of MgO-doped BaTiO3–BiYO3 ceramics

Effect of cerium oxide addition on optical, electrical and dielectric characteristics of (Bi0.5Na0.5)TiO3 ceramics

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Effect of cerium oxide addition on optical, electrical and dielectric characteristics of (Bi_0.5Na_0.5)TiO₃ ceramics