Impedance analysis and high temperature conduction mechanism of flux grown Pb(Zn1/3Nb2/3)0.91Ti0.09O3 single crystal

Singh, Budhendra; Kumar, Binay

doi:10.1002/crat.201000287

Cited by 46 publications

(21 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We obtained a gradual decrease in this activation energy from 360 to 213meV when increasing frequency from 100Hz to 1MHz, respectively. A similar kind of behavior has also been reported in the literature [13,15]. Such a decrease can be attributed to the fact that the increase of the applied field enhances the charge carrier's jumps between the localized states [16].…”

Section: Methodssupporting

confidence: 64%

Impedance spectroscopy of Cu2SnS3 material for photovoltaic applications

Essaleh

Chehouani

Belaqziz

et al. 2015

Superlattices and Microstructures

View full text Add to dashboard Cite

Section: Methodssupporting

confidence: 64%

Impedance spectroscopy of Cu2SnS3 material for photovoltaic applications

Essaleh

Chehouani

Belaqziz

et al. 2015

Superlattices and Microstructures

View full text Add to dashboard Cite

“…The values of activation energy are ranging between 0.6 eV and 1.14 eV for the compositions x = 0, 0.05 and 0.10, which is coherent with doubly ionized oxygen vacancies. However, the higher activation energy found for both Rg and Rgb (1.6 eV) in the composition (x = 0.02) can be attributed to the conduction process associate with barium vacancies [42].…”

Section: Impedance Spectroscopymentioning

confidence: 85%

Direct electrocaloric, structural, dielectric, and electric properties of lead-free ferroelectric material Ba0.9Sr0.1Ti1-xSnxO3 synthesized by semi-wet method

Zaitouni

Hajji

Mezzane

et al. 2019

Physica B: Condensed Matter

View full text Add to dashboard Cite

By using the semi-wet synthesis method, lead-free ferroelectric materials Ba0.9Sr0.1Ti1-xSnxO3 with x = 0, 0.02, 0.05, and 0.10 (abbreviated as BSTS) were prepared and their structural, electric and electrocaloric properties were investigated. The X-ray diffraction (XRD) patterns show that the samples calcined at 950°C have well crystallized into perovskite structure suggesting the substitution of Ti 4+ by Sn 4+ in BST lattice. With increasing content of Sn, the enhancement of the dielectric permittivity was observed for (0≤x≤0.05) and the ferroelectric transition temperature (TC) was found to shift towards the room temperature (TC = 20°C for x = 0.10). Direct measurements of the electrocaloric effect (ECE) were performed on all samples by using the highresolution calorimeter. It is found that Ba0.9Sr0.1Ti0.95Sn0.05O3 exhibits a high ECE temperature change of TEC = 0.188 K at an applied electric field of only 7 kV/cm. Impedance spectrum analysis of all the samples performed in the temperature range of 300-360°C reveals the existence of two relaxation contributions related to the grain and grain boundaries that are well separated in frequency. Activation energies of conduction and relaxation processes were deduced for both contributions in order to determine the conduction mechanism of the studied compositions.2

show abstract

“…At low frequency, it decreases with the increase of temperature; at high frequency, it decreases at first and then becomes stable with increasing temperature. A depression of the

M^{'}

modulus with temperature at high frequency is observed, which could be attribute to the conduction mechanism that is due to the short range mobility of charge carriers . From Fig.…”

Section: Resultsmentioning

confidence: 99%

Core‐shell structured Al/PVDF nanocomposites with high dielectric permittivity but low loss and enhanced thermal conductivity

Gong

Zhou

Sui

et al. 2018

Polymer Engineering & Sci

View full text Add to dashboard Cite

Surface modification of core‐shell structured Al (Al@Al2O3) nanoparticles was performed using γ‐(Aminopropyl)‐triethoxysilane (APS) and dopamine (DA), respectively, and the microstructures, dielectric properties and thermal conductivities of the Al/poly(vinylidene fluoride) (PVDF) nanocomposites were investigated. Both DA and APS enhance the interfacial bonding strength between the fillers and the matrix, leading to homogeneous dispersion of Al nanoparticles in PVDF matrix. Compared with raw Al nanoparticles, surface‐treated Al/PVDF exhibit much higher dielectric permittivity due to the enhanced interfacial interactions between the two components, whereas, the dielectric loss and electric conductivity of the nanocomposites still remain at rather low levels owing to the insulating alumina shell preventing effectively core Al from direct contact. The dynamic dielectric properties results reveal that dielectric constant and loss increase with temperature due to the gradually enhanced mobility of molecular chain segments of PVDF for the raw Al/PVDF and treated Al/PVDF nanocomposites. Additionally, the PVDF nanocomposites with Al treated with APS and DA show enhanced thermal conductivities compared with raw Al/PVDF under the same filler loading because of reduced thermal interfacial resistance promoting phonon transfer across the interfaces. POLYM. ENG. SCI., 59:103–111, 2019. © 2018 Society of Plastics Engineers

show abstract

Impedance analysis and high temperature conduction mechanism of flux grown Pb(Zn_1/3Nb_2/3)_0.91Ti_0.09O₃ single crystal

Cited by 46 publications

References 29 publications

Impedance spectroscopy of Cu2SnS3 material for photovoltaic applications

Impedance spectroscopy of Cu2SnS3 material for photovoltaic applications

Direct electrocaloric, structural, dielectric, and electric properties of lead-free ferroelectric material Ba0.9Sr0.1Ti1-xSnxO3 synthesized by semi-wet method

Core‐shell structured Al/PVDF nanocomposites with high dielectric permittivity but low loss and enhanced thermal conductivity

Contact Info

Product

Resources

About