Results 21 to 30 of about 3,615 (71)

Low temperature sintered giant dielectric permittivity CaCu3Ti4O12 sol-gel synthesized nanoparticle capacitors [PDF]

open access: yesJournal of Advanced Dielectrics, 2017
This paper reports on synthesis of polycrystalline complex perovskite CaCu3Ti4O12 (as CCTO) ceramic powders prepared by a sol–gel auto combustion method at different sintering temperatures and sintering times, respectively.
Venkata Sreenivas Puli   +4 more
doaj   +1 more source

Electromechanical hysteresis and relaxation processes in relaxor piezoceramics

open access: yesJournal of Advanced Dielectrics
This paper studies the relaxation processes and electromechanical hysteresis in relaxor piezoceramics based on the PZT system. Measurements and analysis of the electric displacement and mechanical strain hysteresis loops recorded in bipolar AC electric ...
M. G. Konstantinova   +4 more
doaj   +1 more source

The dielectric and ferroelectric properties of (Ba0.5Sr0.5)TiO3-doped (Bi0.5Na0.5)TiO3 lead-free ceramics [PDF]

open access: yesJournal of Advanced Dielectrics, 2017
This work prepares (Ba0.5Sr0.5)TiO3 (BST)-doped (Bi1∕2Na1∕2)TiO3 (NBT) lead free ceramics through conventional solid reaction method and analyzes the doping effect of BST on phases, microstructure, dielectric and ferroelectric properties.
Guoliang Xue   +7 more
doaj   +1 more source

Reference Question Data Mining [PDF]

open access: yes, 2010
This exploratory study investigated the feasibility of using reference questions as an important tool in the construction of study guides, instructional outreach, and collection development at a small, four-year university in Lake Charles, Louisiana. The
Finnell, Joshua, Fontane, Walt
core   +1 more source

Synthesis and properties of antimony sulfoiodide doped with tin (II) cations

open access: yesJournal of Advanced Dielectrics
Antimony sulfoiodide (SbSI) is a highly efficient energy conversion piezoelectric material. We obtained SbSI doped with tin (II) ions according to the formula Sb[Formula: see text]SnxSI[Formula: see text] ([Formula: see text]–0.1).
D. V. Chirkova, I. V. Lisnevskaya
doaj   +1 more source

Photoluminescence and energy transfer of YAG: Ce3+, Gd3+, Bi3+ [PDF]

open access: yesJournal of Advanced Dielectrics, 2016
In this study, Gd3+ and Bi3+ ions act to redshift the emission band to orange region, and to enhance significantly the maximum emission of YAG: Ce3+. On account that size mismatch between the host and the doped Gd3+ ion, the crystal structure turns soft,
Meidan Que   +4 more
doaj   +1 more source

Self-organized formation of domain arrays in TGS crystal by moving SPM tip

open access: yesJournal of Advanced Dielectrics
In this paper, we studied the formation of self-organized domain arrays created by moving biased tip of scanning probe microscope (SPM) in deuterated TGS crystals.
Anton P. Turygin   +5 more
doaj   +1 more source

Stable dielectric response of low-loss aromatic polythiourea thin films on Pt/SiO2 substrate [PDF]

open access: yesJournal of Advanced Dielectrics, 2016
We have investigated dielectric properties of aromatic polythiourea (ArPTU, a polar polymer containing high dipolar moments with very low defect levels) thin films that were developed on Pt/SiO2 substrate.
A. Eršte   +6 more
doaj   +1 more source

Electro-Thermal Modeling and Thermal Analysis of High-Inertia Synchronous Condenser Converters

open access: yesElectricity
High-inertia energy storage synchronous condenser (HI-ES-SC) is operated through rotor-excited variable-speed mechanisms to provide grid power support. Power devices are exposed to alternating electro-thermal stresses, with significant implications for ...
Jinxin Ouyang   +3 more
doaj   +1 more source

Effects caused by antiferroelectric nanodomains in PZT-based coarse-grained ceramics with compositions from the morphotropic boundary region [PDF]

open access: yesJournal of Advanced Dielectrics, 2017
Presented results demonstrate importance of taking into account such a phenomenon as the solid solution decomposition at the boundaries separating coexisting phases in lead zirconate-titanate-based solid solutions with compositions belonging to the ...
V. M. Ishchuk   +2 more
doaj   +1 more source

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