Study of structural, dielectric and electrical behavior of (1−x)Ba(Fe0.5Nb0.5)O3–xSrTiO3 ceramics

Singh, Narendra Kumar; Kumar, Praveen; Rai, Radheshyam

doi:10.1016/j.jallcom.2010.11.168

Cited by 24 publications

(8 citation statements)

References 36 publications

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“…At high frequencies, however, some of the above-mentioned polarizations may have less or no contribution in e r . This behavior is also found in other compounds studied by us [17][18][19][20][21][22]. The high value of e r in the low-frequency region has been explained using Maxwell-Wagner (MW) polarization effect.…”

Section: Dielectric Analysissupporting

confidence: 70%

Structural and electrical properties of La modified Bi5Ti3FeO15 ceramics

Mohapatra

Das

Choudhary

2015

J Mater Sci: Mater Electron

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The polycrystalline samples of a new bismuth Bi-ferrite, Bi 4 LaTi 3 FeO 15 (i.e., combination of multiferroic BiFeO 3 and ferroelectric Bi 4 Ti 3 O 12 in equal molar ratios) of Aurivillius structural family, were prepared using a hightemperature solid-state reaction method (calcinations/sintering temperature = 900-1,100°C). The X-ray diffraction studies have confirmed the formation of single-phase compounds in orthorhombic crystal system. The scanning electron microscope has provided uniform-grained microstructure and texture with small number of voids. Detailed studies of dielectric and impedance parameters as a function of temperature (30-500°C) in a wide range of frequency (1 kHz-1 MHz) have provided many new and interesting results which will be discussed in details.

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Section: Dielectric Analysissupporting

confidence: 70%

Structural and electrical properties of La modified Bi5Ti3FeO15 ceramics

Mohapatra

Das

Choudhary

2015

J Mater Sci: Mater Electron

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“…It is well known that, ac conductivity depends on the capacitance and thus on the material`s dielectric property. This behavior may be assigned to the space charge polarization present in the material [40]. Consequently, the observed anomalous observed in the dielectric constant (`) vs. temperature relation at different applied frequencies (Fig.…”

Section: Fi Ac-conductivitymentioning

confidence: 88%

Zinc Titanate Nanopowders. Synthesis and Characterization

Gabal

Angari

2021

Preprint

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Zinc titanates nanopowders viz.; Zn2TiO4, ZnTi3O8 and ZnTiO3 were synthesized through the thermal decomposition course of ZnC2O4.2H2O-TiO2 precursor (1:1 mole ratio), prepared via a new co-precipitation method up to 900oC. Thermogravimetric measurement (TG) was utilized to characterize the precursor decomposition while X-ray diffraction (XRD), Fourier transform infra-red (FT-IR) were used to characterize the decomposition products as well as the phase transitions at different temperatures. XRD revealed the starting of titanates formation at 700oC via detecting Zn2TiO4 along with ZnO and TiO2 (anatase) diffraction peaks. By increasing the calcination temperature to 800oC, the ZnO content vanished with the appearing of Zn2Ti3O8 besides ZnTi2O4 and impurities of TiO2 (anatase). Finally at 900oC, the Zn2Ti3O8 content was decomposed into ZnTiO3. Nitrogen adsorption-desorption isotherm of the calcined precursor at 900oC indicated low specific surface area of 7.1 m2 g-1 in accordance with the agglomeration nature estimated via transmission electron microscopy (TEM) study. The conductivity measurements showed semiconducting behavior of the prepared titanates with ferroelectric transition in the range 200-308oC.The obtained low dielectric value suggests the uses of present titanates as a co-fired ceramic or resonator ceramics.

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“…Since BFN ceramics show many interesting electrical properties, many processing methods for production of BFN powders and ceramics have been proposed such as modified solid‐state reaction , sol–gel , and microwave techniques . To improve the dielectric properties, solid‐solutions between BFN and other materials, such as (1– x )BFN– x SrTiO 3 and (1– x )BFN– x BaTiO 3 , have been formed and reported . The effects of doping, such as A‐site doping using La and Na as dopants, on the dielectric properties of BFN have also been investgated .…”

Section: Introductionmentioning

confidence: 99%

Dielectric properties of Ga₂O₃-doped barium iron niobate ceramics

Sanjoom

Pengpat

Eitssayeam

et al. 2014

Phys. Status Solidi A

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Ga-doped BaFe 0.5 Nb 0.5 O 3 (Ba(Fe 1-x Ga x ) 0.5 Nb 0.5 O 3 ) ceramics were fabricated and their properties were investigated. All ceramics showed perovskite structure with cubic symmetry and the solubility of Ga in BFN ceramics had a limit at x ¼ 0.2. Examination of the dielectric spectra indicated that all ceramic samples presented high dielectric constants that were frequency dependent. The x ¼ 0.2 ceramic showed a very high dielectric constant (e r > 240 000 at 1 kHz) while the x ¼ 0.4 sample exhibited high thermal stability of dielectric constant with low loss tangent from room temperature (RT) to 100 8C with e r > 28 000 (at 1 kHz) when compared to other samples. By using a complex impedance analysis technique, bulk grain, grain boundary, and electrode response were found to affect the dielectric behavior that could be related to the Maxwell-Wagner polarization mechanism ß

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Study of structural, dielectric and electrical behavior of (1−x)Ba(Fe0.5Nb0.5)O3–xSrTiO3 ceramics

Cited by 24 publications

References 36 publications

Structural and electrical properties of La modified Bi5Ti3FeO15 ceramics

Structural and electrical properties of La modified Bi5Ti3FeO15 ceramics

Zinc Titanate Nanopowders. Synthesis and Characterization

Dielectric properties of Ga₂O₃-doped barium iron niobate ceramics

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Study of structural, dielectric and electrical behavior of (1−x)Ba(Fe0.5Nb0.5)O3–xSrTiO3 ceramics

Cited by 24 publications

References 36 publications

Structural and electrical properties of La modified Bi5Ti3FeO15 ceramics

Structural and electrical properties of La modified Bi5Ti3FeO15 ceramics

Zinc Titanate Nanopowders. Synthesis and Characterization

Dielectric properties of Ga2O3-doped barium iron niobate ceramics

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Dielectric properties of Ga₂O₃-doped barium iron niobate ceramics