AC impedance spectroscopy and conductivity studies of Dy doped Bi4V2O11 ceramics

Bag, Sasmitarani; Das, Poulomi; Behera, Banarji

doi:10.1007/s40094-017-0246-z

Cited by 33 publications

(7 citation statements)

References 25 publications

(25 reference statements)

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“…This reflects a non-Debye type of relaxation mechanism in these materials [40]. In general, the different regions of the sample can be characterized by means of parallel RC elements [41]. Hence, for the interpretation of data, the complex plots of x = 0.175 were fitted with the help of EIS spectrum analyzer software [42], with an equivalent circuit using depressed semicircle model.…”

Section: Ac Impedance Studiesmentioning

confidence: 99%

Role of Al and Ti doping in modulating electrical properties of BIVOX system

et al. 2019

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The doubly-doped bismuth vanadate with Al and Ti having formula unit, Bi 2 V 1-x Al x/2 Ti x/2 O 5.5-δ (0.10 ≤ x ≤ 0.25) was synthesized. The specimens were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FT-IR), differential scanning calorimetric (DSC), UV-Vis, and electrochemical impedance spectroscopy (EIS) for their structural, thermal, optical, and electrical studies. Influence of both dopant cations (Al and Ti) was observed in the gradual stabilization of the tetragonal phase of Bi 2 VO 5.5-δ with dopant amount. A non-uniform grain growth phenomenon was observed up to x = 0.175, with dopant addition. UV-Vis study revealed the comparatively higher order of oxide ion vacancies for the composition x = 0.175. Impedance spectroscopy measurements indicate a significant decrease of both the grain (R g ) and grain boundary resistances (R gb ) with the rise in temperature and the overall resistance is found to be dominated by the grain interior contribution. Enhancement of ionic conductivity was found in all the compositions in the intermediate temperature range as compared to the parent compound, and the single Al-doped system and the highest value were obtained for x = 0.175. vanadate, Bi 2 VO 5.5-δ (where δ denotes the oxygen-ion vacancy) surfaced in the late eighties is of immense importance because of its visibly good ionic conductivity values at relatively low temperature viz. 0.2 S·cm -1 at ~600 ℃ [6]. However, the problem with this compound is of multiple phase transitions (i.e., α↔β and β↔γ between 420 and 450 ℃ and between 540 and 560 ℃ , respectively) and the highest conductivity is found in tetragonal polymorph known as γ-polymorph or phase [6,7]. Therefore, stabilization of this phase at room temperature is essential. The 490

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Section: Ac Impedance Studiesmentioning

confidence: 99%

Role of Al and Ti doping in modulating electrical properties of BIVOX system

et al. 2019

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“…The frequency versus M ″ curves exhibit a relaxation peak in the low-frequency side, and upon increasing the temperature, the peak shifts toward the high-frequency side, shown in Figure d. This represents non-Debye-type behavior and indicates the thermally monitored dielectric relaxation in this prepared sample …”

Section: Resultsmentioning

confidence: 80%

“…This represents non-Debye-type behavior and indicates the thermally monitored dielectric relaxation in this prepared sample. 70…”

Section: Dsc Analysismentioning

confidence: 99%

One-Pot Hydrothermal Synthesis of SnMnS Nanosheets for Dielectric Energy Storage Applications

Parida¹,

Senapati²,

Samal

et al. 2023

ACS Appl. Nano Mater.

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Recently, dielectric materials with high energy storage capacity, low loss, and good temperature stability are highly desired for the rapidly growing field of power electronics. In the current work, we have investigated the change in electrical, optical, and dielectric properties by varying the concentration of compositional elements Sn and Mn. We have prepared the Sn1–x Mn x S (0.1, 0.3, 0.5, 0.7, and 0.9) matrix by using the simple single-step hydrothermal method. The samples show that the reflectance percentage increased with the increase of the Mn amount in the composition. The samples exhibit narrow band gap values, which further increase with the Mn content. The band gap value increases from 0.43 to 0.56 eV. The structural analysis shows that the prepared samples are polycrystalline in nature, having SnS and MnS phases. Furthermore, the crystallite sizes increase with an increase in Mn addition, whereas dislocation density and strain decrease simultaneously. The refractive index is calculated from optical band gap values by using the Dimitrov and Sakka equation. The morphological study reveals the uniformity in size and shape of the prepared composition throughout the sample. The presence of compositional elements Sn, Mn, and S is confirmed by EDX analysis. The electrical study reveals that the sample shows good electrical properties, which increase with the Mn contents. The dielectric behavior as a function of frequency and temperature was investigated, and the parameters like dielectric constant, AC conductivity, impedance spectroscopy, and electric modulus were deeply analyzed. All the above optical, electrical, and dielectric properties of the SnMnS matrix have potential use in the field of electronic and energy storage device applications.

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“…The presence of a relaxation peak represents the transition from long-range translational motion to the short-range hopping movement of charge carriers. It also supports the non-Debye-type behavior . The hopping of charge carriers based on frequency and temperature defined according to the electric modulus analysis justifies electrical conduction behavior in CNTS samples .…”

Section: Resultsmentioning

confidence: 99%

Optical and Dielectric Characterization of Nanoparticle-Based Cu₂Ni_1+xSn_1–xS₄ Nanosphere Synthesized by Facile Solvothermal Method

Sahoo¹,

Senapati²,

Samal

et al. 2023

ACS Appl. Eng. Mater.

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Here, we have reported an excellent optical, dielectric, and electrical behavior of Cu 2 Ni 1+x Sn 1−x S 4 (CNTS) nanospheres synthesized by the facile solvothermal technique. From its structural analysis, the polycrystalline nature of the material was confirmed due to the presence of the sphalerite phase along with several secondary phases, demonstrating the structural tuning possibilities with a compositional variation. Further analysis of the electronic structure showed the presence of Cu +1 , Ni +2 , Sn +4 , and S −2 valence states in the composition. The nanoflower-like morphology made up of nanospheres remained the same even after the compositional variation and enhanced the light-trapping effect. However, the increase in the optical band gap and decrease in the refractive index showed distinctive properties with the Ni concentration variation. The frequency and temperature-dependent behavior of dielectric parameters, conductivity, impedance, and electric modulus parameters broadened the application possibilities along with the optoelectronic properties. The increase in AC conductivity with temperature enabled the hopping of charge carriers, and properties like an increase in the loss factor at a lower frequency and higher temperature made the nanomaterials favorable for devices based on high-power circuits. The decrease in impedance values indicated less current dissipation in lower-frequency regions, and the electric modulus parameter showed non-Debye-type behavior. The tunable optical, dielectric, and electrical properties of the CNTS materials widen the cutting-edge optoelectronic application possibilities.

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AC impedance spectroscopy and conductivity studies of Dy doped Bi4V2O11 ceramics

Cited by 33 publications

References 25 publications

Role of Al and Ti doping in modulating electrical properties of BIVOX system

Role of Al and Ti doping in modulating electrical properties of BIVOX system

One-Pot Hydrothermal Synthesis of SnMnS Nanosheets for Dielectric Energy Storage Applications

Optical and Dielectric Characterization of Nanoparticle-Based Cu₂Ni_1+xSn_1–xS₄ Nanosphere Synthesized by Facile Solvothermal Method

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AC impedance spectroscopy and conductivity studies of Dy doped Bi4V2O11 ceramics

Cited by 33 publications

References 25 publications

Role of Al and Ti doping in modulating electrical properties of BIVOX system

Role of Al and Ti doping in modulating electrical properties of BIVOX system

One-Pot Hydrothermal Synthesis of SnMnS Nanosheets for Dielectric Energy Storage Applications

Optical and Dielectric Characterization of Nanoparticle-Based Cu2Ni1+xSn1–xS4 Nanosphere Synthesized by Facile Solvothermal Method

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Product

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Optical and Dielectric Characterization of Nanoparticle-Based Cu₂Ni_1+xSn_1–xS₄ Nanosphere Synthesized by Facile Solvothermal Method