Impedance and modulus spectroscopy studies on Ba0.1Sr0.81La0.06Bi2Nb2O9 ceramic

Rao, K. Sambasiva; Dasari, Madhavaprasad; Krishna, P. Murali; Tilak, B.; Varadarajulu, K.Ch.

doi:10.1016/j.mseb.2006.06.030

Cited by 99 publications

(12 citation statements)

References 32 publications

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“…This type potential effect can be observed by applied bias voltage dependence in detail. 40,54,55 The applied bias voltage evolutions of the resistance, the reactance and the impedance values with different amount NiFe 2 O 4 NPs loaded hydrogels are shown in the right column in Figs. 4d, 4e and 4f with respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The dielectric properties are drastically effected electrode polarization and interface polarization. [3][4][5][6][7]40,47,48,54,57,[65][66][67]69 The high values of ε and ε are attributed to electrode polarization that are directly related to the increases in the mobility of localized free caries at interface structure at low frequency. The highest and lowest values of the ε and ε were determined for 2.5% and 10% depend on applied bias voltage.…”

Section: Discussionmentioning

confidence: 99%

“…[36][37][38] Applied bias voltage evolution of the resistance was originated to the particle distribution of localized interface and interfacial hydrogels channels in the three-dimensional networks of polymer chains. 40,[54][55][56][57] The pit behavior in the electric modulus expressed that NPs loaded hydrogels capacitance shows the relaxation mechanism with the applied bias voltage. This relaxation mechanism can be related to the grains and grain boundaries.…”

Section: Discussionmentioning

confidence: 99%

“…[67][68][69] In addition, the potential well and viscoelastic dynamics for NiFe 2 O 4 NPs loaded hydrogels-based electronic circuit originated from the interaction between NPs and hydrogels, coulomb interaction between NPs and oxygen groups, and the ions-migration in the hydrogels channels. [50][51][52][53][54] The impedance based Cole-Cole plots and their adopted to Smith-Chart were analyzed for the hydrogelsbased equivalent resistance-capacitance (RC) circuits as electronic devices, nanotechnology, optoelectronic, brain electronics and photovoltaic devices by using the charge distribution, electrode polarization, dipolar interactions and electrode interface effects. [59][60][61][62] The increase in the conductivity is related to the increase NPs dose with frequency.…”

Section: Discussionmentioning

confidence: 99%

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Optic and Dielectric Properties of Different Amount NiFe₂O₄Nanoparticles Loaded Hydrogels: Synthetic Circuits Applications

Okutan¹,

Coşkun²,

Öztürk³

et al. 2018

ECS J. Solid State Sci. Technol.

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Loaded hydrogels with different amount (2.5%, 5.0%, 7.5% and 10.0%) NiFe 2 O 4 nanoparticles have been prepared for elastic optoelectronic devices in nano size via the copolymerization technics. All samples have been characterized by the UV-Vis absorption spectroscopy. The resistance changes were analyzed by calculating from the slope of the current-voltage plots. The optical band gaps of the NiFe 2 O 4 nanoparticles loaded hydrogels decreases with increase of loading of nanoparticles amount. At room temperature (RT), frequency and applied bias voltage dependence of complex impedance, electric modulus, tangent factor and ionic conductivity have been studied with the impedance spectroscopy (IS). In addition, frequency and applied bias voltage of dependence on dielectric properties for NiFe 2 O 4 nanoparticles loaded hydrogels were compared with each other. Frequency evolution of the dielectric properties are drastically effected interface and electrode polarization. The lowest and highest values of the ε and ε were determined for 10% and 2.5% loaded NiFe 2 O 4 nanoparticles depend on applied bias voltage. The complex impedance based Cole-Cole diagrams and their adopted to Smith-Chart have been analyzed for synthetic equivalent resistance-capacitance circuits via frequency. The UV-Vis absorption values decreases and the conductivity values increases with increase because of increasing NiFe 2 O 4 nanoparticles amount and the grain size of loaded hydrogels structure in general. Different amount NiFe 2 O 4 nanoparticles loaded hydrogels will provide great benefits for optoelectronics and non-linear optical applications in the nanotechnology and photovoltaic devices. The different amount ionic materials loaded hydrogels can be categorized as non-ionic, ionic, zwitterionic and amphoteric electrolyte according to existence or absence of electrical charge in their chains.2 Especially, the dye ions loaded hydrogels play an important role in many areas in electronic packing, iontronics, enhance organic electronic performance devices, optoelectronics, microelectronics, brain electronics and microbial fuel cells applications.3-7 Furthermore, the applications of nanoparticles loaded materials in the form of powders, tubes, fiber and spheres are receiving a great deal of interest in nanoscience and nanotechnology. 8,9 The nanostructure loaded hydrogels have many applications such as high-efficiency an alkaline phosphatase (ALP) sensor, 10 23 and photoelectric devices 24 due to its high or low dielectric constants. Also, nano particle loaded dielectric materials in the visible spectral region can be made transparent electrically conductive. These materials are used as flat panel displays and the transparent conductive electrodes in solar cells. 25-27The dielectric properties and their technological applications of the NiFe 2 O 4 nanoparticles (NPs) loaded hydrogels have not been detailed examination depending on frequency and bias voltage so far. From hence, as an unlike to our previous study, [3][4][5][6][7] in the aim of pre...

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Optic and Dielectric Properties of Different Amount NiFe₂O₄Nanoparticles Loaded Hydrogels: Synthetic Circuits Applications

Okutan¹,

Coşkun²,

Öztürk³

et al. 2018

ECS J. Solid State Sci. Technol.

View full text Add to dashboard Cite

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“…This behavior confirmed the insulating expression of material at lower rates, while semiconducting trend at higher frequencies. It could also be well-linked to the effectiveness of grain boundaries and attributed to the release of space charges at higher frequencies level [49]. figure 8(b) also demonstrated that no heat loss occurs at higher frequencies owed to resonance phenomena [48].…”

Section: Impedance Spectroscopymentioning

confidence: 86%

Facile synthesis and characterizations of Co²⁺ doped Bi_0.8Ba_0.2FeO₃ nano-crystalline multiferroic ceramics

Awan¹,

Ahmad²,

Waheed³

et al. 2021

Phys. Scr.

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Barium doped BiFeO 3 and Cobalt doped Bi 0.8 Ba 0.2 FeO 3 (BBFO) nanocrystalline multiferroic ceramics were prepared by the sol-gel technique. Rhombohedral symmetry was observed throughout the compositions, and the effect of sintering temperature was observed on volume and grain size of BBFO at (400 °C-700 °C) using x-ray profiles. The final sintering temperature for Cobalt doped (BBFCO) was estimated by using thermal analysis. DC I-V (current-voltage) analysis was used to analyze the leakage current density and conduction mechanism of ceramics. The temperature-dependent electrical resistivity measurements confirmed the metallic behaviour of Co 2+ doped BBFO multiferroics at low temperatures, and transition temperature T MI was also found to be Cobalt concentration-dependent. The dielectric response, electrical impedance, and Modulus of the material were measured in the frequency range 100Hz to 2MHz at room temperature. Trends or occurrences may be attributed to oxygen vacancies arise due to doping content.

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Raman scattering and alternative current conduction mechanism of the high‐temperature phase transition in [(C₄H₉)₄N]₃Bi₂Cl₉

Trigui

Oueslati

Hlel

et al. 2016

J Raman Spectroscopy

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The tri‐tetrabutylammonium nonachlorobibismuthate(III) was found to crystallize in the monoclinic P21/n space group. Two reversible order–disorder phase transitions are observed at 434/430 K and 477/473 K by differential scanning calorimetry technique. The evolution of Raman wavenumber versus temperature shows a remarkable shifting of the bands associated to alkyl chains, suggesting that the phase transition is governed by the reorientational motion of the organic part [(C4H9)4N]+. The analysis of Nyquist plots has revealed the contribution of two electrical active regions corresponding to the bulk mechanism and the distribution of grain boundaries. The AC conductivity is analyzed by different processes: the non‐overlapping small polaron tunneling model proposed as a closely good model for region I and the correlated barrier hopping attributed to the conduction mechanism for region II. Copyright © 2016 John Wiley & Sons, Ltd.

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Impedance and modulus spectroscopy studies on Ba0.1Sr0.81La0.06Bi2Nb2O9 ceramic

Cited by 99 publications

References 32 publications

Optic and Dielectric Properties of Different Amount NiFe₂O₄Nanoparticles Loaded Hydrogels: Synthetic Circuits Applications

Optic and Dielectric Properties of Different Amount NiFe₂O₄Nanoparticles Loaded Hydrogels: Synthetic Circuits Applications

Facile synthesis and characterizations of Co²⁺ doped Bi_0.8Ba_0.2FeO₃ nano-crystalline multiferroic ceramics

Raman scattering and alternative current conduction mechanism of the high‐temperature phase transition in [(C₄H₉)₄N]₃Bi₂Cl₉

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Impedance and modulus spectroscopy studies on Ba0.1Sr0.81La0.06Bi2Nb2O9 ceramic

Cited by 99 publications

References 32 publications

Optic and Dielectric Properties of Different Amount NiFe2O4Nanoparticles Loaded Hydrogels: Synthetic Circuits Applications

Optic and Dielectric Properties of Different Amount NiFe2O4Nanoparticles Loaded Hydrogels: Synthetic Circuits Applications

Facile synthesis and characterizations of Co2+ doped Bi0.8Ba0.2FeO3 nano-crystalline multiferroic ceramics

Raman scattering and alternative current conduction mechanism of the high‐temperature phase transition in [(C4H9)4N]3Bi2Cl9

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Optic and Dielectric Properties of Different Amount NiFe₂O₄Nanoparticles Loaded Hydrogels: Synthetic Circuits Applications

Optic and Dielectric Properties of Different Amount NiFe₂O₄Nanoparticles Loaded Hydrogels: Synthetic Circuits Applications

Facile synthesis and characterizations of Co²⁺ doped Bi_0.8Ba_0.2FeO₃ nano-crystalline multiferroic ceramics

Raman scattering and alternative current conduction mechanism of the high‐temperature phase transition in [(C₄H₉)₄N]₃Bi₂Cl₉