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  Subjects -> ELECTRONICS (Total: 184 journals)
Showing 1 - 200 of 277 Journals sorted alphabetically
Acta Electronica Malaysia     Open Access  
Advances in Biosensors and Bioelectronics     Open Access   (Followers: 7)
Advances in Electrical and Electronic Engineering     Open Access   (Followers: 6)
Advances in Electronics     Open Access   (Followers: 79)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 8)
Advances in Microelectronic Engineering     Open Access   (Followers: 13)
Advances in Power Electronics     Open Access   (Followers: 33)
Advancing Microelectronics     Hybrid Journal  
Aerospace and Electronic Systems, IEEE Transactions on     Hybrid Journal   (Followers: 318)
American Journal of Electrical and Electronic Engineering     Open Access   (Followers: 24)
Annals of Telecommunications     Hybrid Journal   (Followers: 9)
APSIPA Transactions on Signal and Information Processing     Open Access   (Followers: 9)
Archives of Electrical Engineering     Open Access   (Followers: 13)
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 8)
Bell Labs Technical Journal     Hybrid Journal   (Followers: 28)
Bioelectronics in Medicine     Hybrid Journal  
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 19)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 36)
Biomedical Instrumentation & Technology     Hybrid Journal   (Followers: 6)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 12)
BULLETIN of National Technical University of Ukraine. Series RADIOTECHNIQUE. RADIOAPPARATUS BUILDING     Open Access   (Followers: 1)
Bulletin of the Polish Academy of Sciences : Technical Sciences     Open Access   (Followers: 1)
Canadian Journal of Remote Sensing     Full-text available via subscription   (Followers: 47)
China Communications     Full-text available via subscription   (Followers: 8)
Chinese Journal of Electronics     Hybrid Journal  
Circuits and Systems     Open Access   (Followers: 15)
Consumer Electronics Times     Open Access   (Followers: 5)
Control Systems     Hybrid Journal   (Followers: 267)
Edu Elektrika Journal     Open Access   (Followers: 1)
Electrica     Open Access  
Electronic Design     Partially Free   (Followers: 106)
Electronic Markets     Hybrid Journal   (Followers: 7)
Electronic Materials Letters     Hybrid Journal   (Followers: 4)
Electronics     Open Access   (Followers: 86)
Electronics and Communications in Japan     Hybrid Journal   (Followers: 10)
Electronics For You     Partially Free   (Followers: 93)
Electronics Letters     Hybrid Journal   (Followers: 26)
Elkha : Jurnal Teknik Elektro     Open Access  
Embedded Systems Letters, IEEE     Hybrid Journal   (Followers: 51)
Energy Harvesting and Systems     Hybrid Journal   (Followers: 4)
Energy Storage Materials     Full-text available via subscription   (Followers: 3)
EPJ Quantum Technology     Open Access  
EURASIP Journal on Embedded Systems     Open Access   (Followers: 11)
Facta Universitatis, Series : Electronics and Energetics     Open Access  
Foundations and Trends® in Communications and Information Theory     Full-text available via subscription   (Followers: 6)
Foundations and Trends® in Signal Processing     Full-text available via subscription   (Followers: 10)
Frequenz     Hybrid Journal   (Followers: 1)
Frontiers of Optoelectronics     Hybrid Journal   (Followers: 1)
Geoscience and Remote Sensing, IEEE Transactions on     Hybrid Journal   (Followers: 197)
Haptics, IEEE Transactions on     Hybrid Journal   (Followers: 4)
IACR Transactions on Symmetric Cryptology     Open Access  
IEEE Antennas and Propagation Magazine     Hybrid Journal   (Followers: 97)
IEEE Antennas and Wireless Propagation Letters     Hybrid Journal   (Followers: 77)
IEEE Journal of Emerging and Selected Topics in Power Electronics     Hybrid Journal   (Followers: 46)
IEEE Journal of the Electron Devices Society     Open Access   (Followers: 9)
IEEE Journal on Exploratory Solid-State Computational Devices and Circuits     Hybrid Journal   (Followers: 1)
IEEE Power Electronics Magazine     Full-text available via subscription   (Followers: 67)
IEEE Transactions on Antennas and Propagation     Full-text available via subscription   (Followers: 70)
IEEE Transactions on Automatic Control     Hybrid Journal   (Followers: 56)
IEEE Transactions on Circuits and Systems for Video Technology     Hybrid Journal   (Followers: 20)
IEEE Transactions on Consumer Electronics     Hybrid Journal   (Followers: 40)
IEEE Transactions on Electron Devices     Hybrid Journal   (Followers: 19)
IEEE Transactions on Information Theory     Hybrid Journal   (Followers: 26)
IEEE Transactions on Power Electronics     Hybrid Journal   (Followers: 70)
IEEE Transactions on Signal and Information Processing over Networks     Full-text available via subscription   (Followers: 12)
IEICE - Transactions on Electronics     Full-text available via subscription   (Followers: 12)
IEICE - Transactions on Information and Systems     Full-text available via subscription   (Followers: 5)
IET Cyber-Physical Systems : Theory & Applications     Open Access   (Followers: 1)
IET Microwaves, Antennas & Propagation     Hybrid Journal   (Followers: 35)
IET Nanodielectrics     Open Access  
IET Power Electronics     Hybrid Journal   (Followers: 46)
IET Smart Grid     Open Access  
IET Wireless Sensor Systems     Hybrid Journal   (Followers: 18)
IETE Journal of Education     Open Access   (Followers: 4)
IETE Journal of Research     Open Access   (Followers: 11)
IETE Technical Review     Open Access   (Followers: 13)
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems)     Open Access   (Followers: 3)
Industrial Electronics, IEEE Transactions on     Hybrid Journal   (Followers: 58)
Industry Applications, IEEE Transactions on     Hybrid Journal   (Followers: 25)
Informatik-Spektrum     Hybrid Journal   (Followers: 2)
Instabilities in Silicon Devices     Full-text available via subscription   (Followers: 1)
Intelligent Transportation Systems Magazine, IEEE     Full-text available via subscription   (Followers: 13)
International Journal of Advanced Research in Computer Science and Electronics Engineering     Open Access   (Followers: 18)
International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems     Open Access   (Followers: 10)
International Journal of Antennas and Propagation     Open Access   (Followers: 11)
International Journal of Applied Electronics in Physics & Robotics     Open Access   (Followers: 4)
International Journal of Computational Vision and Robotics     Hybrid Journal   (Followers: 6)
International Journal of Control     Hybrid Journal   (Followers: 11)
International Journal of Electronics     Hybrid Journal   (Followers: 7)
International Journal of Electronics and Telecommunications     Open Access   (Followers: 13)
International Journal of Granular Computing, Rough Sets and Intelligent Systems     Hybrid Journal   (Followers: 2)
International Journal of High Speed Electronics and Systems     Hybrid Journal  
International Journal of Hybrid Intelligence     Hybrid Journal  
International Journal of Image, Graphics and Signal Processing     Open Access   (Followers: 14)
International Journal of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 8)
International Journal of Nano Devices, Sensors and Systems     Open Access   (Followers: 12)
International Journal of Nanoscience     Hybrid Journal   (Followers: 1)
International Journal of Numerical Modelling: Electronic Networks, Devices and Fields     Hybrid Journal   (Followers: 4)
International Journal of Power Electronics     Hybrid Journal   (Followers: 24)
International Journal of Review in Electronics & Communication Engineering     Open Access   (Followers: 4)
International Journal of Sensors, Wireless Communications and Control     Hybrid Journal   (Followers: 10)
International Journal of Systems, Control and Communications     Hybrid Journal   (Followers: 4)
International Journal of Wireless and Microwave Technologies     Open Access   (Followers: 6)
International Transaction of Electrical and Computer Engineers System     Open Access   (Followers: 2)
JAREE (Journal on Advanced Research in Electrical Engineering)     Open Access  
Journal of Biosensors & Bioelectronics     Open Access   (Followers: 3)
Journal of Advanced Dielectrics     Open Access   (Followers: 1)
Journal of Artificial Intelligence     Open Access   (Followers: 10)
Journal of Circuits, Systems, and Computers     Hybrid Journal   (Followers: 4)
Journal of Computational Intelligence and Electronic Systems     Full-text available via subscription   (Followers: 1)
Journal of Electrical and Electronics Engineering Research     Open Access   (Followers: 25)
Journal of Electrical Bioimpedance     Open Access  
Journal of Electrical Bioimpedance     Open Access   (Followers: 2)
Journal of Electrical Engineering & Electronic Technology     Hybrid Journal   (Followers: 7)
Journal of Electrical, Electronics and Informatics     Open Access  
Journal of Electromagnetic Analysis and Applications     Open Access   (Followers: 7)
Journal of Electromagnetic Waves and Applications     Hybrid Journal   (Followers: 8)
Journal of Electronic Design Technology     Full-text available via subscription   (Followers: 6)
Journal of Electronics (China)     Hybrid Journal   (Followers: 4)
Journal of Energy Storage     Full-text available via subscription   (Followers: 4)
Journal of Engineered Fibers and Fabrics     Open Access   (Followers: 2)
Journal of Field Robotics     Hybrid Journal   (Followers: 3)
Journal of Guidance, Control, and Dynamics     Hybrid Journal   (Followers: 169)
Journal of Information and Telecommunication     Open Access   (Followers: 1)
Journal of Intelligent Procedures in Electrical Technology     Open Access   (Followers: 3)
Journal of Low Power Electronics     Full-text available via subscription   (Followers: 7)
Journal of Low Power Electronics and Applications     Open Access   (Followers: 9)
Journal of Microelectronics and Electronic Packaging     Hybrid Journal  
Journal of Microwave Power and Electromagnetic Energy     Hybrid Journal  
Journal of Microwaves, Optoelectronics and Electromagnetic Applications     Open Access   (Followers: 10)
Journal of Nuclear Cardiology     Hybrid Journal  
Journal of Optoelectronics Engineering     Open Access   (Followers: 4)
Journal of Physics B: Atomic, Molecular and Optical Physics     Hybrid Journal   (Followers: 29)
Journal of Power Electronics & Power Systems     Full-text available via subscription   (Followers: 11)
Journal of Semiconductors     Full-text available via subscription   (Followers: 5)
Journal of Sensors     Open Access   (Followers: 26)
Journal of Signal and Information Processing     Open Access   (Followers: 9)
Jurnal ELTIKOM : Jurnal Teknik Elektro, Teknologi Informasi dan Komputer     Open Access  
Jurnal Rekayasa Elektrika     Open Access  
Jurnal Teknik Elektro     Open Access  
Jurnal Teknologi Elektro     Open Access  
Kinetik : Game Technology, Information System, Computer Network, Computing, Electronics, and Control     Open Access  
Learning Technologies, IEEE Transactions on     Hybrid Journal   (Followers: 12)
Magnetics Letters, IEEE     Hybrid Journal   (Followers: 7)
Majalah Ilmiah Teknologi Elektro : Journal of Electrical Technology     Open Access   (Followers: 2)
Metrology and Measurement Systems     Open Access   (Followers: 5)
Microelectronics and Solid State Electronics     Open Access   (Followers: 19)
Nanotechnology Magazine, IEEE     Full-text available via subscription   (Followers: 33)
Nanotechnology, Science and Applications     Open Access   (Followers: 6)
Nature Electronics     Hybrid Journal  
Networks: an International Journal     Hybrid Journal   (Followers: 5)
Open Electrical & Electronic Engineering Journal     Open Access  
Open Journal of Antennas and Propagation     Open Access   (Followers: 8)
Optical Communications and Networking, IEEE/OSA Journal of     Full-text available via subscription   (Followers: 15)
Paladyn. Journal of Behavioral Robotics     Open Access   (Followers: 1)
Power Electronics and Drives     Open Access   (Followers: 1)
Problemy Peredachi Informatsii     Full-text available via subscription  
Progress in Quantum Electronics     Full-text available via subscription   (Followers: 7)
Pulse     Full-text available via subscription   (Followers: 5)
Radiophysics and Quantum Electronics     Hybrid Journal   (Followers: 2)
Recent Advances in Communications and Networking Technology     Hybrid Journal   (Followers: 3)
Recent Advances in Electrical & Electronic Engineering     Hybrid Journal   (Followers: 9)
Research & Reviews : Journal of Embedded System & Applications     Full-text available via subscription   (Followers: 5)
Revue Méditerranéenne des Télécommunications     Open Access  
Security and Communication Networks     Hybrid Journal   (Followers: 2)
Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of     Hybrid Journal   (Followers: 54)
Semiconductors and Semimetals     Full-text available via subscription   (Followers: 1)
Sensing and Imaging : An International Journal     Hybrid Journal   (Followers: 2)
Services Computing, IEEE Transactions on     Hybrid Journal   (Followers: 4)
Software Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 75)
Solid-State Circuits Magazine, IEEE     Hybrid Journal   (Followers: 13)
Solid-State Electronics     Hybrid Journal   (Followers: 9)
Superconductor Science and Technology     Hybrid Journal   (Followers: 2)
Synthesis Lectures on Power Electronics     Full-text available via subscription   (Followers: 3)
Technical Report Electronics and Computer Engineering     Open Access  
TELE     Open Access  
Telematique     Open Access  
TELKOMNIKA (Telecommunication, Computing, Electronics and Control)     Open Access   (Followers: 9)
Universal Journal of Electrical and Electronic Engineering     Open Access   (Followers: 6)
Visión Electrónica : algo más que un estado sólido     Open Access   (Followers: 1)
Wireless and Mobile Technologies     Open Access   (Followers: 6)
Wireless Power Transfer     Full-text available via subscription   (Followers: 4)
Women in Engineering Magazine, IEEE     Full-text available via subscription   (Followers: 11)
Електротехніка і Електромеханіка     Open Access  

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Journal Cover
Journal of Advanced Dielectrics
Journal Prestige (SJR): 0.263
Citation Impact (citeScore): 1
Number of Followers: 1  

  This is an Open Access Journal Open Access journal
ISSN (Print) 2010-135X - ISSN (Online) 2010-1368
Published by World Scientific Homepage  [119 journals]
  • Studies of dielectric and piezoelectric properties of PbTi[math]
           Te[math]GdxO3 nano ceramics prepared by high energy ball milling

    • Authors: S. K. Sinha, S. Kumari, R. K. Chaudhary
      Abstract: Journal of Advanced Dielectrics, Volume 09, Issue 02, April 2019.
      Incorporation of Te and Gd were done based on the stoicheometric formula PbTi[math] Te[math]GdxO3 (PTTeG). TG characterization of green powder revealed the completion of solid state reaction at temperature 450∘ C. XRD of modified PTTeG powders milled for 10[math]h was found most suitable as it gives pure single-phase tetragonal structure. Dielectric constant was found as 2543 at curie temperature of 480∘C in the case of 5[math]wt.% of Gd in PTTeG. Piezoelectric Coefficient was found as 241 [math] 10 [math] C/N at 39[math]Kv/cm of poling field. The results obtained were comparable and even better than so far reported in similar kind of materials.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-05-16T06:04:19Z
      DOI: 10.1142/S2010135X19500176
       
  • Comprehensive investigation of structural, dielectric and local
           piezoelectric properties of KNN ceramics

    • Authors: Poonam Kumari, Madan Lal, Sunil Kumar, Radheshyam Rai, Anupinder Singh, D. V. Karpinsky, Igor Bdikin
      Abstract: Journal of Advanced Dielectrics, Volume 09, Issue 02, April 2019.
      In this research paper, we utilized the traditional high-temperature solid-state reaction method to fabricate the K[math]Na[math]NbO3, K[math]Na[math]NbO3 and K[math]Na[math]NbO3 (abbreviated as KNN-1, KNN-2, and KNN-3, respectively) lead-free ion deficient ceramics for understanding the influence of ionic deficiency on the crystalline structure and dielectric/piezoelectric properties of the samples. X-ray diffraction patterns of these samples exhibited a perovskite tetragonal phase. Dielectric anomalies around 287∘C and 471∘C were identified as ferroelectric to ferroelectric and ferroelectric to paraelectric-transition temperatures for KNN-2 at 1[math]kHz. It was found that the composition KNN-2 exhibit relatively high Curie temperature i.e., 471∘C. The conductivity plots confirm that the activation energies are frequency-dependent. The impedance behavior in our ceramic samples can be analyzed with the bulk/grain effect. The slope of [math] with temperature shows negative temperature coefficient of resistance (NTCR) type behavior in proposed KNN ceramics material.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-05-16T06:03:40Z
      DOI: 10.1142/S2010135X19500164
       
  • Dielectric spectroscopy and hydrogen bonding studies of
           1-chloropropane–ethanol mixture using TDR technique

    • Authors: Ravindra V. Shinde, Avadhut R. Deshmukh, Shital A. Ingole, Ashok C. Kumbharkhane
      Abstract: Journal of Advanced Dielectrics, Volume 09, Issue 02, April 2019.
      The time-domain reflectometry technique was exercised to assess the complex permittivities of 1-chloropropane and ethanol along with their binary mixture in the frequency range of 10[math]MHz–50[math]GHz and in the temperature range of 10–[math]C. Dielectric parameters like static dielectric permittivity ([math] and relaxation time ([math] have been acquired by the least-square-fit method. The obtained assessments of static permittivity and relaxation time were used to compute various dielectric parameters like excess dielectric constant, excess relaxation time, Kirkwood correlation factor and thermodynamic parameters. The experimental outcome illustrates the nonlinear variations in dielectric permittivity, relaxation time and authenticates the structural formation due to intermolecular interaction between 1-chloropropane and ethanol. Molecular rotary motion and dipole reorientation movements of these complex systems are presented in agreement with the molar entropy and enthalpy.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-05-16T06:03:28Z
      DOI: 10.1142/S2010135X19500188
       
  • Influence of Ni substitution on structural, morphological, dielectric,
           magnetic and optical properties of Cu–Zn ferrite by double sintering
           sol–gel technique

    • Authors: Mohammad Sajjad Hossain, Yeasmin Akter, Mohammad Shahjahan, Muhammad Shahriar Bashar, Most. Hosney Ara Begum, Md. Moazzem Hossain, Suravi Islam, Nazia Khatun, Md. Al-Mamun
      Abstract: Journal of Advanced Dielectrics, Volume 09, Issue 02, April 2019.
      Polycrystalline NiCuZn ferrite (NixCu[math]Zn[math]Fe2O4; [math], 0.3, 0.4 and 0.5) were prepared through sol–gel auto combustion method applying double sintering technique. Structural, morphological, elemental analyses (EDS), Fourier-transform infrared spectroscopy (FTIR), Direct Current (DC) electrical resistivity, dielectric, magnetic and optical properties of prepared samples were analyzed. XRD profiles reveal the formation of simple cubic spinel structure without any traceable impurity. The average crystallite size lies within the range of 22–29[math]nm. Lattice parameter decreases with increasing Ni concentration. Room temperature DC resistivity was recorded from [math] to [math][math][math][math]cm. Both dielectric constant ([math]) and loss factor (tan[math]) were decreased with increase of frequency while AC conductivity increases. FTIR absorption peak occurred at three different frequency ranges at 570–577[math]cm[math], 1635–1662[math]cm[math] and 3439–3448[math]cm[math]. Magnetic properties were investigated by using vibrating sample magnetometer (VSM). Decreasing trends were observed for saturation magnetization ([math]), magnetic coercivity ([math]) and remanant magnetization ([math]) with the increase of Ni content. Optical band gap ([math]2.70–2.79[math]eV) were calculated from diffuse reflectance data by using Kubelka–Munk function.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-05-16T06:02:57Z
      DOI: 10.1142/S2010135X19500206
       
  • Large electro-strain signal of the BNT–BT–KNN lead-free piezoelectric
           ceramics with CuO doping

    • Authors: Zhi-Hao Zhao, Rui-Fang Ge, Yejing Dai
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      This paper investigates a system of 0.93Bi[math]Na[math]TiO3–0.06BaTiO3–0.01K[math]Na[math]NbO3–[math]CuO (BNT–BT–KNN–[math]CuO, [math][math]mol.%) ceramics, which were fabricated by the conventional solid-state process through the granulation of vacuum freeze drier. The results show that the CuO doping made a significant enhancement on the piezoelectric properties of the BNT–BT–KNN ceramics. With the doping of CuO, the transition temperature between ferroelectric phase and ergodic relaxor state is reduced to near room temperature, resulting in pinched [math]–[math] loops and “sprout” shape [math]–[math] curves. For the composition with [math], a high unipolar strain of 0.39% under 5[math]kV/mm contributes a large [math][math]pm/V at room temperature, which is competitive with the other BNT-based ceramics.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-05-23T08:49:09Z
      DOI: 10.1142/S2010135X1950022X
       
  • Piezo-catalytic degradation of Havriliak–Negami type

    • Authors: C. L. Wang
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      Two sets of experimental data of piezo-catalytic degradations are adapted to fit with three-parameter Mittag–Leffler functions. One set is degradation on methyl orange (MO) using catalysis of nano-sized barium titanates, and another set is on Rhodamine-B (RhB) using molybdenum disulfide nano-flowers as catalysts. The fitting results suggest that these piezo-catalytic degradations can be described either as Davidson–Cole type response function or Havriliak–Negami type of dielectric relaxation. This work confirms completely the universality in chemical reaction kinetics, which can be described by fractional differential equations with Mittag–Leffler functions as their solutions.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-05-21T10:32:50Z
      DOI: 10.1142/S2010135X19500218
       
  • Case study: A simple optical inverse problem from a geometrical optics
           point of view

    • Authors: Anshi Yan, Yangjie Liu, Wenfeng Wang
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      In this paper, we revisit the simple problem of reflection from a dielectric sphere for light rays and define a form of optical inverse problem in the sense of geometrical optics (GO). A general analytic formula is derived to obtain the refraction index of the sphere for any incidence light to emerge in a deflected angle. Numerical wave simulation and ray tracing are performed to verify the inverse formulae derived.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-04-11T08:52:00Z
      DOI: 10.1142/S2010135X1950019X
       
  • Effect of Cl doping amount on the microstructure, photovoltaic properties
           and ferroelectric properties of Bi-based lead-free perovskite

    • Authors: Shilong Zhang, Ruicheng Xu, Zhendong Li, Qianwei Zhang, Li Cheng, Zhenhua Wang, Chunlin Fu
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      Organic–inorganic hybrid perovskites with 3D perovskite structure have gained much attention as light harvesting materials in thin-film photovoltaics. This is because of their outstanding light-absorption characteristics, charge-transport dynamics and their simple processability using lab-scale solution and vapor phase deposition techniques. However, the inherent instability and lead toxicity of lead-based PSCs are the major problems at present. Recent studies have shown that the (CH3NH[math]Bi2I9 (MBI) 0D bismuth-based compound can be used as an optical absorption layer in solar cells. In this paper, the (CH3NH[math]Bi2I9 was doped with Cl− and a series of (CH3NH[math]Bi2I[math]Clx films were prepared. The effects of different doping amounts on the microstructure, photovoltaic properties and ferroelectric properties were systematically investigated. Scanning electron microscope (SEM) and Atomic force microscope (AFM) analysis showed that with the increase of doping content, the density of the films increased and the roughness decreased. The photoelectric conversion efficiency of (CH3NH[math]Bi2I[math]Clx raises with the increase of doping content. For example, the photoelectric conversion efficiency of (CH3NH[math]Bi2I3Cl6 is 0.473%. We find that the leakage current descends into the increase in doping content, which may be due to the increase in the film density and the decrease of porosity. These research results have a positive effect on the development of Bi-based lead-free perovskite.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-03-25T02:08:25Z
      DOI: 10.1142/S2010135X19500139
       
  • Spectroscopic analysis and temperature-dependent dielectric properties of
           bulk Ni–Zn ceramics

    • Authors: Anand Yadav, Pankaj Choudhary, P. Saxena, V. N. Rai, A. Mishra
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      In the present work, series of Zn ion-doped Ni[math]ZnxFe2O4 ([math]) ceramics were prepared by the double sintered solid-state reaction route to find out the influence of Zn[math] ions on the crystal structure, lattice structure and dielectric behavior of parent NiFe2O4. X-ray diffraction (XRD) study favors that all the prepared compounds belong to the cubic spinel structure. Lattice parameters found to have increasing value with increased Zn[math] ion substitution. The Raman scattering measurement discerns optical-active modes with blue shift as the doping increases. The dielectric constant ([math] and dielectric tangent loss (tan [math] decrease with an increase in frequency and at higher frequency, both become constant. Dielectric parameters observe nonlinear behavior with increasing Zn[math] ion substitution. Room temperature dielectric constant of 10% Zn ion-doped NiFe2O4 [Ni[math]Zn[math]Fe2O4] is much higher as compared to other prepared ceramics. The room temperature ac conductivity is found to increase with increase in frequency and temperature-dependent ac conductivity increases with increase in temperature.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-03-25T02:08:24Z
      DOI: 10.1142/S2010135X19500140
       
  • Composition-sensitive electrical properties of charge nonstoichiometric
           0.94Bi[math]Na[math]TiO3–0.06BaTiO3 ceramics

    • Authors: Ji Zhang, Rui-Xue Wang, Ling Li, Lei Sun, Zheng-Bin Gu, Haibo Zhang, Shan-Tao Zhang
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      Charge nonstoichiometric 0.94Bi[math]Na[math]TiO3–0.06BaTiO3 (BNT-BT) ([math]) ceramics were prepared and investigated. The depolarization temperature was dependent on composition and the ferroelectric property of [math] was suppressed more significantly than the [math], indicating the composition-sensitive electrical properties. Furthermore, the [math] was close to the insulator/conductor composition boundary while the [math] was close to the ferroelectrics/relaxor boundary. These results were attributed to the complex effect of donor doping and acceptor doping on depolarization field. This work provides robust clues to tune and/or design electrical property and conductivity of Bi[math]Na[math]TiO3-based materials.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-03-19T01:44:45Z
      DOI: 10.1142/S2010135X19500127
       
  • The nanostructure of barium dititanate prepared by hydrothermal method

    • Authors: Sarah L. Rasheed, Emad K. Al-Shakarchi
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      The dielectric ceramic of barium dititanate compound BaTi2O5 had been prepared through the hydrothermal process by applying different parameters, such as pH-value, reaction time, temperature and pressure. The prepared powders were examined by X-ray diffraction (XRD). The predominant phase was a monoclinic phase with lattice constants ([math], [math], [math] Å), ([math], [math]), and the unit cell volume (527 Å3). The surface morphology was demonstrated by Scanning Electron Microscopy (SEM). It exhibited the grains in spherical and elliptical shapes with high homogeneity. The shapes of nanostructure were analyzed by Transmission Electron Microscopy (TEM). The appearance of nanostructures like the nanoparticles and nano rods were found. The size of nanoparticles was in the range of 9–31[math]nm, and size of nanorods was 32–37[math]nm. The dielectric measurements were done by using LCR meter at different temperature and frequencies (10, 50 and 100[math]kHz). It was clear that the Curie temperature had a high value up to (485∘C). The relative permittivity was partially changed for two prepared samples regarding high pressure and long reaction time, which were the main preparation conditions of hydrothermal method.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-03-04T04:20:08Z
      DOI: 10.1142/S2010135X19500115
       
  • Frequency-dependent scaling behavior of polyvinylidene fluoride/metal
           composites

    • Authors: Maheswar Panda
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      The frequency-dependent percolation and scaling behavior of a variety of polymer/metal composites (PMC), based on polyvinylidene fluoride (PVDF) matrix and various types of fillers such as; metal/alloy particles of different sizes, prepared through cold/hot pressing process conditions have undergone investigation. The universal percolation behavior in the vicinity of percolation threshold ([math]), i.e., [math] and [math] is well satisfied, which suggests [math] to be independent of frequency, where [math] and [math] are the effective ac conductivity and effective dielectric constants of the composite and [math] is the frequency of applied ac signal. The obtained experimental values of the exponents are consistent with the inter-cluster polarization model ([math] and [math]), satisfying [math]. The widely used percolative equations are well fitted with the experimental results of all PMC at all values of the frequency. The value of [math] is found to be independent of frequency of the applied signal, suggesting the studied PMC are real percolating systems. The critical exponents ([math] and [math]) which characterize the divergence of [math] and [math] in the vicinity of [math] are found to decrease with the increase of frequency. The rate of decrease of ‘[math]’ and ‘[math]’ with increase of frequency is attributed to the method of preparation, size of the fillers, adhesiveness of polymer/filler and the rate of decrease of [math] with frequency (due to the absence of different extents of contributions of various types of conventional polarizations).
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-02-26T02:58:10Z
      DOI: 10.1142/S2010135X19500103
       
 
 
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