Synthesis, Impedance and Dielectric Studies of Double Doped Strontium Bismuth Niobate Ferroelectric Ceramics

Kumar, B Ravi; Prasad, N. V.; Prasad, G.; Kumar, G. S.

doi:10.1080/0371750x.2019.1610068

Cited by 18 publications

(6 citation statements)

References 23 publications

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“…16 The Bi 3+ ions replaced by Dy 3+ ions have revealed the ferroelectric ordering in SBN. 21 DC conductivity, dielectric, impedance and modulus studies have been presented by double doping A-site with Potassium and Gadolinium in SBN by Ravi Kumar et al 22,23 Barium and Gadolinium are simultaneously substituted at Strontium site of SBN by Sambasiva Rao et al, and found that T c of SBN has increased from 392 °C-470 °C. 24 In view of the study of the above literature, it can be seen that few attempts have been made to study the structural, ferroelectric, dielectric and piezoelectric properties of rare earth double doping (simultaneous doping) at the Bi-site of SBN.…”

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confidence: 99%

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi₂Nb₂O₉ lead Free Ceramics

Nagamani¹,

Kiran²,

Bhimavarapu³

et al. 2021

ECS J. Solid State Sci. Technol.

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Lead free dielectric materials of Strontium Bismuth Niobate SrBi2Nb2O9 (SBN) and rare earth double doped SrBi1.8Pr0.1Gd0.1Nb2O9 (SBPGN), SrBi1.8Pr0.1Y0.1Nb2O9 (SBPYN), SrBi1.8Eu0.1Gd0.1Nb2O9 (SBEGN) and SrBi1.8Eu0.1Y0.1Nb2O9 (SBEYN) were prepared by two-stage solid-state reaction route. The XRD studies have confirmed the formation of single-phase orthorhombic crystal structure. The microstructural analysis showed the formation of plausible needle shaped grains in the prepared ceramics. The FTIR study was used to investigate the effect of preparation and doping processes on the band intensities of the spectra. Mechanical studies showed that SBEGN and SBEYN ceramics exhibited mild wear (<10−6 mm3 Nm−1) compared to others. The low friction coefficient values of SBPYN (0.044), SBEGN (0.058) and SBEYN (0.002) to that of SBN necessitate lattice strain in these materials. The VSM studies on the rare earth double doped SBN ceramic materials confirmed the induction and existence of magnetic order in SBPGN and SBEGN.

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confidence: 99%

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi₂Nb₂O₉ lead Free Ceramics

Nagamani¹,

Kiran²,

Bhimavarapu³

et al. 2021

ECS J. Solid State Sci. Technol.

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“…47 In addition, since the space charge can obtain enough energy to cross the barrier at high temperatures, its fluidity is enhanced, so that the radius of the semicircle of each component decreases with the increase of temperature. The upwarping at the end of the curve is attributed to the electrode's interface effect, 45,46,48 as shown in Fig. 4(a) at 460–500 °C and Fig.…”

Section: Resultsmentioning

confidence: 92%

“…At the same time, from the impedance diagram of the ceramics it can be seen that when x ≤ 0.10, the curve of the imaginary part ( Z ′′) to the real part ( Z ′) can be approximately decomposed into three semicircles. 45 With the increase of the frequency, the electrode diffusion effect, the grain boundary response and the grain response of the ceramics correspondingly increase. 46 When x ≥ 0.13, the electrode diffusion effect of ceramics disappears, and the bulk effect dominates.…”

Section: Resultsmentioning

confidence: 99%

Energy storage performance of NaNbO₃ lead-free dielectric ceramics by doping Sr(Mg_1/3Sb_2/3)O₃

Dong¹,

Nong²,

Yong³

et al. 2023

J. Mater. Chem. C

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“…A little tail appears at the end of the semicircle. This is attributed to the electrode interface effect [29][30][31]. What's more, the diameter of the arc in the high frequency region of the complex spectrum of BLTS15 also represents the charge transfer resistance occurs when electrons move from one state to another.…”

Section: Dielectric and Impedance Propertiesmentioning

confidence: 99%

The defect related energy-storage properties of A-site off-stoichiometry ferroelectric ceramic

Meng

Tang

et al. 2021

Appl. Phys. A

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The Ba 0.985 La 0.015 Ti 0.9 Sn 0.1 O 3 ceramic has been prepared by a cost-effective solid-state reaction method. Preliminary roomtemperature X-ray diffraction indicates that the crystallization of the ceramic is good. Field Emission Scanning Electron Microscopy was used to study the microstructure of ceramic. X-ray photoelectron spectroscopy was used to characterize the oxygen vacancies. Dielectric properties and impedance spectroscopy reflected the characteristic of relaxor-type behavior. Modified Curie-Weiss law was used to evaluate the relaxor behavior. The fitting result of the relaxation parameter λ = 1.4, which verifies their relaxor property. Jonscher's power law was used to analyze the behavior of alternating current conductivity. The Arrhenius law was used to calculate the relaxor activation-energy (E a ) and the conduction activation-energy (E c ). The fitting results show that the E a and E c are 1.1 and 1. 13 eV, respectively. These values demonstrate that the high-temperature relaxor behavior was attributed to the double ionized oxygen vacancies. The electric field versus polarization curve reflects the energy-storage property of it. The maximum recoverable energy-storage density is 2.14 J/cm 3 , and the energy-storage efficiency is 67.65%.

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Synthesis, Impedance and Dielectric Studies of Double Doped Strontium Bismuth Niobate Ferroelectric Ceramics

Cited by 18 publications

References 23 publications

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi₂Nb₂O₉ lead Free Ceramics

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi₂Nb₂O₉ lead Free Ceramics

Energy storage performance of NaNbO₃ lead-free dielectric ceramics by doping Sr(Mg_1/3Sb_2/3)O₃

The defect related energy-storage properties of A-site off-stoichiometry ferroelectric ceramic

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Synthesis, Impedance and Dielectric Studies of Double Doped Strontium Bismuth Niobate Ferroelectric Ceramics

Cited by 18 publications

References 23 publications

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi2Nb2O9 lead Free Ceramics

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi2Nb2O9 lead Free Ceramics

Energy storage performance of NaNbO3 lead-free dielectric ceramics by doping Sr(Mg1/3Sb2/3)O3

The defect related energy-storage properties of A-site off-stoichiometry ferroelectric ceramic

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Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi₂Nb₂O₉ lead Free Ceramics

Structural, Mechanical and Magnetic Characterization of Rare Earth Double Doped SrBi₂Nb₂O₉ lead Free Ceramics

Energy storage performance of NaNbO₃ lead-free dielectric ceramics by doping Sr(Mg_1/3Sb_2/3)O₃