AC Conductivity and dielectric relaxation in Li2O-PbO-As2O3-B2O3 glasses

Kalyani, Birampally; Pujari, Navaneetha; Edukondalu, Avula; Reddy, M. Srinivasa; Vardhani, C. P.

doi:10.1016/j.cjph.2022.07.007

Cited by 4 publications

(3 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Bi 2 O 3 produces a thick liquid phase, which suppresses graingrowing and widens grain boundary, thereby generating a surface tension force in liquid phase and directly affecting grain size and pores. [15] Figure 4 shows the magnetic hysteresis loops of materials with different quantities of Gd 3+ ions, and the inset shows a magnified part of the loops in the magnetic field range of H = 0 kOe-10 kOe. It can be seen that all samples show relatively smooth hysteresis loops and typical soft magnetic performances.…”

Section: Resultsmentioning

confidence: 99%

Tuning magneto-dielectric properties of Co₂Z ferrites via Gd doping for high-frequency applications

Lü

Zhang

et al. 2023

Chinese Phys. B

View full text Add to dashboard Cite

In present study, magneto-dielectric properties of Co2Z ferrite materials are tuned via Gd doping for application in high-frequency antennas and filters. Ba3Co2Fe24-xGdxO41 (x = 0.00, 0.05, 0.10, 0.15, and 0.20) materials are successfully prepared using solid-state method at 925 ℃ for 4 h with 2.5wt% Bi2O3 sintering aids. Different contents of Gd3+ ion affect micromorphology, grain size, bulk density, and magneto-dielectric properties of the ferrite. Upon increasing Gd3+ ion content, saturation magnetization (M S) first increases and then decreases. The maximum value of M S is 44.86 emu/g, which is obtained at x = 0.15. Additionally, sites occupied by Gd3+ ions can change magnetic anisotropy constant of the ferrite. Magnetocrystalline anisotropy constants (K 1) are derived from initial magnetization curve, and it is found that K 1 is related to spin–orbit coupling and intersublattice interactions between metal ions. Real part of magnetic permeability (μ') and real part of dielectric permittivity (ε') are measured in frequency range of 10 MHz–1 GHz. When x = 0.15, materials have excellent magnetodielectric properties (μ' ≈ 12.2 and ε' ≈ 17.61) as well as low magnetic loss (tanδ μ ≈ 0.03 @500 MHz) and dielectric loss (tanδ ε ≈ 0.04 @500 MHz). Results show that Gd-doped Co2Z ferrite materials have broad application prospects for use in multilayer filters and high-frequency antennas.

show abstract

Section: Resultsmentioning

confidence: 99%

Tuning magneto-dielectric properties of Co₂Z ferrites via Gd doping for high-frequency applications

Lü

Zhang

et al. 2023

Chinese Phys. B

View full text Add to dashboard Cite

show abstract

“…The temperature dependence of σ ac ( ω ) is controlled by the thermal activation process according to the Arrhenius equation [ 60 ],

where ∆ E ( ω ) is the activation energy for the electrical conduction. The AC activation energy was calculated for all the investigated frequencies; the frequency dependence of ∆ E ( ω ) for E143 dye is shown in Figure 11 .…”

Section: Resultsmentioning

confidence: 99%

“…This can be ascribed to the increase in carrier mobility according to the thermal activation jumping model. The temperature dependence of σ ac (ω) is controlled by the thermal activation process according to the Arrhenius equation [60],…”

Section: Ac Conductivitymentioning

confidence: 99%

Physical Properties of E143 Food Dye as a New Organic Semiconductor Nanomaterial

Alyami,

Alotibi

2023

Nanomaterials

View full text Add to dashboard Cite

Organic semiconductors (OSCs) have attracted considerable attention for many promising applications, such as organic light-emitting diodes (OLEDs), organic field-effect transistors (OFETs), and organic photovoltaics (OPVs). The present work introduced E143 food dye as a new nanostructured organic semiconductor that has several advantages, such as low cost, easy fabrication, biocompatibility, and unique physical properties. The material was characterized using a transmission electron microscope (TEM), Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), and optical absorption spectroscopy. The study of X-ray diffraction (XRD) showed that E143 dye has a monoclinic polycrystalline structure. Electrical and dielectric properties were performed by impedance spectroscopy at frequencies (20 Hz–1 MHz) in the temperature range (303–473 K). The values of interband transitions and activation energy recommended the application of E143 dye as a new organic semiconductor material with promising stability, especially in the range of hot climates such as KSA.

show abstract

Electrical Conduction and Dielectric Relaxation in Bismuth-Modified Lithium Lead Borate Glasses

Chauhan,

Bala,

Yadav

et al. 2023

J. Electron. Mater.

View full text Add to dashboard Cite

AC Conductivity and dielectric relaxation in Li2O-PbO-As2O3-B2O3 glasses

Cited by 4 publications

References 51 publications

Tuning magneto-dielectric properties of Co₂Z ferrites via Gd doping for high-frequency applications

Tuning magneto-dielectric properties of Co₂Z ferrites via Gd doping for high-frequency applications

Physical Properties of E143 Food Dye as a New Organic Semiconductor Nanomaterial

Electrical Conduction and Dielectric Relaxation in Bismuth-Modified Lithium Lead Borate Glasses

Contact Info

Product

Resources

About

AC Conductivity and dielectric relaxation in Li2O-PbO-As2O3-B2O3 glasses

Cited by 4 publications

References 51 publications

Tuning magneto-dielectric properties of Co2Z ferrites via Gd doping for high-frequency applications

Tuning magneto-dielectric properties of Co2Z ferrites via Gd doping for high-frequency applications

Physical Properties of E143 Food Dye as a New Organic Semiconductor Nanomaterial

Electrical Conduction and Dielectric Relaxation in Bismuth-Modified Lithium Lead Borate Glasses

Contact Info

Product

Resources

About

Tuning magneto-dielectric properties of Co₂Z ferrites via Gd doping for high-frequency applications

Tuning magneto-dielectric properties of Co₂Z ferrites via Gd doping for high-frequency applications