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  Subjects -> ELECTRONICS (Total: 193 journals)
Showing 1 - 200 of 277 Journals sorted alphabetically
Acta Electronica Malaysia     Open Access  
Advanced Materials Technologies     Hybrid Journal  
Advances in Electrical and Electronic Engineering     Open Access   (Followers: 7)
Advances in Electronics     Open Access   (Followers: 94)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 8)
Advances in Power Electronics     Open Access   (Followers: 39)
Advancing Microelectronics     Hybrid Journal  
Aerospace and Electronic Systems, IEEE Transactions on     Hybrid Journal   (Followers: 349)
American Journal of Electrical and Electronic Engineering     Open Access   (Followers: 26)
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: 14)
Australian Journal of Electrical and Electronics Engineering     Hybrid Journal  
Autonomous Mental Development, IEEE Transactions on     Hybrid Journal   (Followers: 8)
Batteries     Open Access   (Followers: 7)
Batteries & Supercaps     Hybrid Journal  
Bell Labs Technical Journal     Hybrid Journal   (Followers: 30)
Bioelectronics in Medicine     Hybrid Journal  
Biomedical Engineering, IEEE Reviews in     Full-text available via subscription   (Followers: 22)
Biomedical Engineering, IEEE Transactions on     Hybrid Journal   (Followers: 38)
Biomedical Instrumentation & Technology     Hybrid Journal   (Followers: 6)
Broadcasting, IEEE Transactions on     Hybrid Journal   (Followers: 13)
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: 9)
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: 306)
ECTI Transactions on Computer and Information Technology (ECTI-CIT)     Open Access  
ECTI Transactions on Electrical Engineering, Electronics, and Communications     Open Access   (Followers: 1)
Edu Elektrika Journal     Open Access   (Followers: 1)
Electrica     Open Access  
Electronic Design     Partially Free   (Followers: 123)
Electronic Markets     Hybrid Journal   (Followers: 7)
Electronic Materials Letters     Hybrid Journal   (Followers: 4)
Electronics     Open Access   (Followers: 104)
Electronics and Communications in Japan     Hybrid Journal   (Followers: 10)
Electronics For You     Partially Free   (Followers: 103)
Electronics Letters     Hybrid Journal   (Followers: 26)
Elkha : Jurnal Teknik Elektro     Open Access  
Embedded Systems Letters, IEEE     Hybrid Journal   (Followers: 55)
Energy Harvesting and Systems     Hybrid Journal   (Followers: 4)
Energy Storage     Hybrid Journal  
Energy Storage Materials     Full-text available via subscription   (Followers: 3)
EPE Journal : European Power Electronics and Drives     Hybrid Journal  
EPJ Quantum Technology     Open Access   (Followers: 1)
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: 209)
Haptics, IEEE Transactions on     Hybrid Journal   (Followers: 4)
IACR Transactions on Symmetric Cryptology     Open Access  
IEEE Antennas and Propagation Magazine     Hybrid Journal   (Followers: 100)
IEEE Antennas and Wireless Propagation Letters     Hybrid Journal   (Followers: 81)
IEEE Journal of Emerging and Selected Topics in Power Electronics     Hybrid Journal   (Followers: 51)
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: 75)
IEEE Transactions on Antennas and Propagation     Full-text available via subscription   (Followers: 73)
IEEE Transactions on Automatic Control     Hybrid Journal   (Followers: 58)
IEEE Transactions on Circuits and Systems for Video Technology     Hybrid Journal   (Followers: 26)
IEEE Transactions on Consumer Electronics     Hybrid Journal   (Followers: 44)
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: 78)
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 Energy Systems Integration     Open Access  
IET Microwaves, Antennas & Propagation     Hybrid Journal   (Followers: 35)
IET Nanodielectrics     Open Access  
IET Power Electronics     Hybrid Journal   (Followers: 57)
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: 74)
Industrial Technology Research Journal Phranakhon Rajabhat University     Open Access  
Industry Applications, IEEE Transactions on     Hybrid Journal   (Followers: 38)
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: 11)
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: 5)
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: 3)
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: 16)
International Journal of Microwave and Wireless Technologies     Hybrid Journal   (Followers: 10)
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: 25)
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: 4)
Journal of Advanced Dielectrics     Open Access   (Followers: 1)
Journal of Artificial Intelligence     Open Access   (Followers: 11)
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: 35)
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: 8)
Journal of Electromagnetic Waves and Applications     Hybrid Journal   (Followers: 9)
Journal of Electronic Design Technology     Full-text available via subscription   (Followers: 6)
Journal of Electronics (China)     Hybrid Journal   (Followers: 5)
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: 182)
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: 10)
Journal of Low Power Electronics and Applications     Open Access   (Followers: 10)
Journal of Microelectronics and Electronic Packaging     Hybrid Journal  
Journal of Microwave Power and Electromagnetic Energy     Hybrid Journal   (Followers: 3)
Journal of Microwaves, Optoelectronics and Electromagnetic Applications     Open Access   (Followers: 11)
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: 30)
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: 6)
Microelectronics and Solid State Electronics     Open Access   (Followers: 28)
Nanotechnology Magazine, IEEE     Full-text available via subscription   (Followers: 42)
Nanotechnology, Science and Applications     Open Access   (Followers: 6)
Nature Electronics     Hybrid Journal   (Followers: 1)
Networks: an International Journal     Hybrid Journal   (Followers: 5)
Open Electrical & Electronic Engineering Journal     Open Access  
Open Journal of Antennas and Propagation     Open Access   (Followers: 9)
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: 2)
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: 56)
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: 78)
Solid State Electronics Letters     Open Access  
Solid-State Circuits Magazine, IEEE     Hybrid Journal   (Followers: 13)
Solid-State Electronics     Hybrid Journal   (Followers: 9)
Superconductor Science and Technology     Hybrid Journal   (Followers: 3)
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)
Transactions on Electrical and Electronic Materials     Hybrid Journal  
Universal Journal of Electrical and Electronic Engineering     Open Access   (Followers: 6)
Ural Radio Engineering Journal     Open Access  
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]
  • Optical, UV-Vis spectroscopy studies, electrical and dielectric properties
           of transition metal-based of the novel organic–inorganic hybrid
           (C6[math]N2)(Hg2Cl5)2.3H2O

    • Authors: Imen Ben Saad, Najeh Hannachi, Thierry Roisnel, Faouzi Hlel
      Abstract: Journal of Advanced Dielectrics, Volume 09, Issue 05, October 2019.
      In this work, we are interested in the synthesis of new hybrid material (C6[math]N2)(Hg2[math].3H2O grown by hydrothermal methods. X-ray diffraction indicates that this compound crystallizes at 150(2) K in the monoclinic system with [math]/[math] space group, with the following unit cell parameters: [math](15) Å, [math](15) Å, [math](6) Å, [math] and [math]. On the other hand, the optical properties of this compound were studied using ultraviolet-visible (UV-Vis) spectroscopy in the range 200–800[math]nm. Furthermore, the optical absorbances are used to determine the absorption coefficient [math] and the optical band gap [math], so the Tauc model was used to determine the optical gap energy of the compound (C6[math]N2)(Hg2[math].3H2O. The analysis of the results revealed the existence of optical allowed indirect transition mechanisms with the band gap energy equal to (2.37[math]eV) for liquid and (4.33[math]eV) for solid. Impedance measurements indicate that the electrical and dielectric properties are strongly dependent on both temperature and frequency. Nyquist plots ([math] versus [math]) show that the conductivity behavior is accurately represented by an equivalent circuit model which consists of a series combination of bulk and grain boundary. Furthermore, the angular frequency dependence plots of the real and imaginary parts, [math] and [math], of complex dielectric permittivity [math] and tan [math] losses at several temperatures between 303 and 453[math]K were studied for the title compound. Finally, the modulus plots can be characterized by the presence of two relaxation peaks.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-11-28T09:04:02Z
      DOI: 10.1142/S2010135X19500401
       
  • Analysis of porosity influence on the effective moduli of ceramic matrix
           PZT composite using the simplified finite element model

    • Authors: Anna Kudimova, Andrey Nasedkin
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      The problem of determining the effective moduli of a ceramic matrix piezocomposite with respect to multiscale porosity was considered. To solve the homogenization problem, the method of effective moduli in the standard formulation, the finite element method and the ANSYS computational package were used. Various models of two-phase and three-phase composites consisting of a piezoceramic matrix, elastic inclusions of corundum and pores of various sizes have been investigated. Finite element models of representative volumes of 3–0 and 3–0–0 connectivities were developed. The results of computational experiments showed that effective moduli depend quite significantly not only on the volume fractions of inclusions and pores, but also on the structure and size of pores in comparison with the characteristic sizes of inclusions.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-11-14T09:14:16Z
      DOI: 10.1142/S2010135X19500437
       
  • Tuning the ferroelectric, dielectric and photoluminescence properties of
           0.88(Na[math]Bi[math])TiO3-0.12BaTiO3ceramics by Sm ion doping

    • Authors: Yong Li, Jun Zhao, Xinglei Zhang, Qiannan Jia, Xihong Hao
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      Solid solutions of the lead-free 0.88(Na[math]Bi[math]TiO3-0.12(Ba[math]Sm[math]TiO3 (NBT-BT: [math]Sm) ferroelectric ceramics were synthesized by solid state reaction. The doping of Sm promotes the structure of the ceramics to transform toward morphotropic phase boundary, and it decreases the grain size of the ceramics. With the increase of Sm content, the ferroelectric properties are improved gradually, where the ferroelectric polarization increases and the coercive field decreases. Sm doping induces a dielectric anomaly with obvious frequency dispersion at a low temperature, exhibiting the transition from the ferroelectric to relaxor state. Moreover, the photoluminescence spectra of NBT-BT:[math]Sm ceramics exhibit a strong orange emission upon blue light excitation of the 400[math]nm to 500[math]nm. The emission intensities are strongly dependent on the Sm doping concentration, which reached the optimal value as the doping concentration is 0.7%. These results suggest that the NBT-BT:[math]Sm ceramics may have significant technological promise in novel multifunctional devices.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-10-22T08:54:31Z
      DOI: 10.1142/S2010135X19500413
       
  • Pulsed laser deposition of amorphous InGaZnO4 as an electron transport
           layer for perovskite solar cells

    • Authors: Shanming Ke, Bukui Du, Zhenggang Rao, Chun Huang, Peng Lin, Yongming Hu, Longlong Shu
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      Hybrid perovskite solar cells (PSCs) have been intensively studied in recent years because of their high efficiency and low costs. For PSCs, the electron transport layer (ETL) is a key for its photoelectric conversion efficiency. Here we demonstrate the application of amorphous InGaZnO4 thin films as ETL for efficient PSCs by pulsed laser deposition (PLD). The PSC device using such InGaZnO4 amorphous film as ETL has achieved an efficiency of 15.1%. The outstanding performance is attributed to the excellent properties of amorphous InGaZnO4 oxide thin films, including high electron mobility and high transparency, what is more, the electronic properties of the films can be controlled by changing the partial pressure of oxygen in the deposition chamber and post-deposition annealing process. Our result will be helpful for preparation of large area PSCs and other opto-electric devices at low temperature by physical vapor deposition method.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-10-22T08:54:30Z
      DOI: 10.1142/S2010135X19500425
       
  • Abnormal phase transition and polarization mismatch phenomena in
           BaTiO3-based relaxor ferroelectrics

    • Authors: Qingyuan Hu, Xiaoyong Wei
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      Relaxor ferroelectrics have been extensively studied due to their outstanding dielectric, piezoelectric, energy storage, and electro-optical properties. Although various theories were proposed to elaborate on the relaxation phenomena, polar nanoregions formed by disruption of the long-range-order structures are considered to play a key role in relaxor ferroelectrics. Generally, relaxor ferroelectrics are formed by aliovalent substitution or isovalent substitution in normal ferroelectrics, or further combinations of solid solutions. Herein, one category of BaTiO3-based relaxor ferroelectrics with abnormal phase transition and polarization mismatch phenomena is focused. Characteristic parameters of such BaTiO3-based relaxor ferroelectrics, including the Curie temperature, polarization, and lattice parameter, show a typical “U”-shaped variation with compositions. The studied BaTiO3-based relaxor ferroelectrics are mostly solid solutions of [math]-site coupling and [math]-site coupling ferroelectrics, exhibiting polarization mismatch in certain compositions [e.g., 0.9BaTiO3–0.1BiScO3, 0.8BaTiO3–0.2Bi(Mg[math]Ti[math]O3, 0.8BaTiO3–0.2Bi(Mg[math]Nb[math]O3, 0.5BaTiO3–0.5Pb(Mg[math]Nb[math]O3, 0.4BaTiO3–0.6Pb(Zn[math]Nb[math]O3, etc.]. Of particular interest is that excellent electrical properties can be achieved in the studied relaxor ferroelectrics. Therefore, polarization mismatch theory can also provide guidance for the design of new high-performance lead-free relaxor ferroelectrics.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-10-11T03:32:33Z
      DOI: 10.1142/S2010135X19300020
       
  • Raman wavenumbers calculated as a function of pressure from the mode
           Grüneisen parameter of PZT ([math]) ceramic close to the monoclinic-cubic
           transition

    • Authors: A. Kiraci
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      The isothermal mode Grüneisen parameter [math] of some Raman modes in PbZr[math]TixO3 (PZT, [math]) were calculated as a function of pressure by means of the observed pressure-dependent volume data of PZT ([math]) crystal from the literature at room temperature of 298[math]K. Those calculated values of [math] were then used to compute the pressure dependence of the Raman modes in PZT ([math]) ceramic studied here. The observed and calculated values of the Raman wavenumbers in PZT were in good agreement, which indicates that the isothermal mode Grüneisen parameter can also be used to predict the pressure-dependent wavenumbers of some other perovskite-type crystals. Additionally, the pressure dependence of the thermodynamic quantities such as isothermal compressibility [math], thermal expansion [math] and the specific heat [math] of PZT ([math]) ceramic were predicted at constant temperature of 298[math]K. Here, the experimentally measurable thermodynamic quantities calculated for PZT ([math]) ceramics provide theoretically a significant opportunity for testing.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-10-11T03:32:33Z
      DOI: 10.1142/S2010135X19500395
       
  • Dielectric behaviors and relaxor characteristics in
           Bi[math]Na[math]TiO3-BaTiO3 ceramics

    • Authors: Pei Chen, Jun Wang, Weidong Zeng, Changrong Zhou, Yongsheng Zhang, Qingning Li, Jiwen Xu, Guohua Chen, Changlai Yuan
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      Microstructure and dielectric behaviors of heating/cooling and bias-field were investigated in lead-free ceramics ([math])Bi[math]Na[math]TiO[math]BaTiO3 (BNT[math]BT, [math], 0.02, 0.04, 0.06, 0.08 and 0.10). The relaxor characters and the Vogel–Fulcher law of frequency-dependent dielectric properties were analyzed. Three dielectric anomalies with pronounced frequency dispersion at [math], a maximum dielectric with variable frequency-dispersion at [math] and a third Maxwell–Wagner-type relaxation over a wide temperature range in high-temperature region were observed. The significant dielectric thermal hysteresis, low barrier energy, high freezing temperature in heating process and the maximum dielectric tunability appeared in [math] ceramic.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-10-01T06:26:48Z
      DOI: 10.1142/S2010135X19500383
       
  • Eu-doped K[math]Na[math]NbO3-(Ba,Sr)TiO3: A novel lead-free luminescent
           ferroelectric transparent ceramic with reversible photochromism

    • Authors: Jinfeng Lin, Xiao Wu, Cong Lin, Tengfei Lin, Yaojin Wang
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      Photochromic (PC) luminescent ferroelectric materials have aroused great interest because of their potential applications in optical information memories, optical switches and bio-imaging. However, those materials are basically opaque. In this work, we prepared a PC luminescent K[math]Na[math]NbO3-based ferroelectric transparent ceramic by modifying with Eu[math], Ba[math], Ti[math] and Sr[math], which not only have good optical transmittances ([math]60% at 900[math]nm), moderate ferroelectric properties and down-conversion photoluminescence (PL) properties, but also exhibit reversible PC behavior. After the illumination by xenon lamp, the colors of the ceramics change from pale green to gray, and then reversibly recover to their initial state via thermal stimulus (200∘C for 10[math]min). Interestingly, both the optical transmittances and PL intensities can be effectively tailored by controlling the PC reaction process. The results suggest that the ferroelectric transparent ceramics are promising for the modulation of photoenergy and the design of optoelectronic devices.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-09-30T02:33:19Z
      DOI: 10.1142/S2010135X19500371
       
  • Enhanced electrical resistivity and mechanical properties in BCTZ-based
           composite ceramic

    • Authors: Xiaodong Yan, Mupeng Zheng, Mankang Zhu, Yudong Hou
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      Environmental and human health concerns about lead toxicity have prompted the development of lead-free piezoceramics. Among them, (Ba[math]Ca[math](Zr[math]Ti[math]O3 (BCTZ) with excellent piezoelectric properties has the most potential and attracts extensive attention. However, lack of concern toward electrical resistivity and mechanical properties has greatly hindered its practical application. Here, we report the achievement of enhanced insulation characteristics (grain electrical resistivity increased by one order of magnitude) and superior mechanical properties (Vickers hardness value increased by 40%) in Al2O3-added BCTZ composite ceramics. Such improvement can be attributed to specific composite microstructure, where the nonferroelectric second phase dispersed in the grain interior and grain boundary of BCTZ matrix results in blocking effect on the electric current paths as well as propagation of microcracks. These findings will pave a new way for the practical application of BCTZ ceramics.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-09-30T02:33:18Z
      DOI: 10.1142/S2010135X1950036X
       
  • Finite-size-effect on a very large length scale in NBT-based lead-free
           piezoelectrics

    • Authors: Anupam Mishra, Dipak Kumar Khatua, Gobinda Das Adhikary, Naveen Kumar, Uma Shankar, Rajeev Ranjan
      Abstract: Journal of Advanced Dielectrics, Ahead of Print.
      Na[math]Bi[math]TiO3-based lead-free piezoelectrics are considered for potential replacement of the lead-based commercial piezoceramics in high-power transducer applications. We have examined the role of grain size in influencing the structural-polar inhomogeneity of stoichiometric and off-stoichiometric Na[math]Bi[math]TiO3 (NBT), and its morphotropic-phase-boundary (MPB) derivative 0.94Na[math]Bi[math]TiO3-0.06BaTiO3 (NBT-6BT). Our study reveals that size effect comes into play in these systems on a very large length scale (on the scale of microns) considerably affecting its global structure and properties.
      Citation: Journal of Advanced Dielectrics
      PubDate: 2019-09-30T02:33:18Z
      DOI: 10.1142/S2010135X19500358
       
  • 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
       
 
 
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