Investigation of structural and dielectric behavior of Eu2(B′0.5 B″0.5)2O7 (B′=Ba; B″=W, Mo) ceramics

Singh, Narendra Kumar; Kumar, Praveen; Roy, O P; Rai, Radheshyam

doi:10.1016/j.jallcom.2010.08.015

Cited by 9 publications

(4 citation statements)

References 27 publications

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“…At very high frequencies (ω>>1/τ), dipoles can no longer follow the field and ε′ ≈ ε ∞ (highfrequency value of ε′) [36]. This behavior is also found in other compounds studied by us [37][38][39][40][41]. Fig.…”

Section: Resultssupporting

confidence: 70%

Structural And Impedance Spectroscopy Analysis Of Ba(Fe0.5Nb0.5)O3-BaTiO3 ceramic System

Singh¹,

Kumar²,

Rai

et al. 2012

Adv. Mater. Lett.

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Polycrystalline samples of BaFe 0.5 Nb 0.5 O 3 and (1-x)Ba(Fe 0.5 Nb 0.5 )O 3 -xBaTiO 3 , [referred as BFN and BFN-BT respectively] (x = 0.00, 0.15 and 0.20) have been synthesized by a high-temperature solid-state reaction technique. The formation of the compound was checked by an X-ray diffraction (XRD) technique. The microstructure analysis was done by scanning electron micrograph. The spectroscopic data presented in impedance plane show the grain and grain boundary contributions towards electrical processes in the form of semi-circular arcs. Detailed studies of dielectric and impedance properties of the materials in a wide range of frequency (100Hz-5MHz) and temperatures (30-282°C) showed that these properties are strongly temperature and frequency dependent.

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Section: Resultssupporting

confidence: 70%

Structural And Impedance Spectroscopy Analysis Of Ba(Fe0.5Nb0.5)O3-BaTiO3 ceramic System

Singh¹,

Kumar²,

Rai

et al. 2012

Adv. Mater. Lett.

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“…At high frequencies, however, some of the above-mentioned polarizations may have less contribution in '. This behavior is also found in other compounds studied by us[17][18][19][20][21][22].…”

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confidence: 81%

Structural and Electrical Characteristics of Ba(Fe0.5Nb0.5)O3-SrTiO3 Ceramic System

Singh¹,

Kumar²,

Sharma³

et al. 2011

MSA

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A complex structure of barium iron niobate, Ba(Fe 0.5 Nb 0.5)O 3 (BFN) and strontium titanate SrTiO 3 (ST) was fabricated by a solid-state reaction method. The phase formation of Ba(Fe 0.5 Nb 0.5)O 3-SrTiO 3 was checked using X-ray diffraction (XRD) technique. The X-ray structural analysis of BFN and BFN-ST ceramics, showed the formation of single-phase compound in the monoclinic system, which is a distorted structure of an ideal cubic perovskite. Careful examination of microstructures of the individual compounds of the system was done by the scanning electron micrograph (SEM), and confirms the polycrystalline nature of the systems. Detailed studies of dielectric and electrical impedance properties of the systems in a wide range of frequency (100 Hz-5 MHz) and different temperatures (30˚C-285˚C) showed that these properties are strongly dependent on temperature and frequency.

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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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Investigation of structural and dielectric behavior of Eu2(B′0.5 B″0.5)2O7 (B′=Ba; B″=W, Mo) ceramics

Cited by 9 publications

References 27 publications

Structural And Impedance Spectroscopy Analysis Of Ba(Fe0.5Nb0.5)O3-BaTiO3 ceramic System

Structural And Impedance Spectroscopy Analysis Of Ba(Fe0.5Nb0.5)O3-BaTiO3 ceramic System

Structural and Electrical Characteristics of Ba(Fe<sub>0.5</sub>Nb<sub>0.5</sub>)O<sub>3</sub>-SrTiO<sub>3</sub> Ceramic System

Structural and electrical properties of La modified Bi5Ti3FeO15 ceramics

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Investigation of structural and dielectric behavior of Eu2(B′0.5 B″0.5)2O7 (B′=Ba; B″=W, Mo) ceramics

Cited by 9 publications

References 27 publications

Structural And Impedance Spectroscopy Analysis Of Ba(Fe0.5Nb0.5)O3-BaTiO3 ceramic System

Structural And Impedance Spectroscopy Analysis Of Ba(Fe0.5Nb0.5)O3-BaTiO3 ceramic System

Structural and Electrical Characteristics of Ba(Fe&lt;sub&gt;0.5&lt;/sub&gt;Nb&lt;sub&gt;0.5&lt;/sub&gt;)O&lt;sub&gt;3&lt;/sub&gt;-SrTiO&lt;sub&gt;3&lt;/sub&gt; Ceramic System

Structural and electrical properties of La modified Bi5Ti3FeO15 ceramics

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Structural and Electrical Characteristics of Ba(Fe<sub>0.5</sub>Nb<sub>0.5</sub>)O<sub>3</sub>-SrTiO<sub>3</sub> Ceramic System