Results 11 to 20 of about 442,158 (165)

ELECTRIC CONDUCTIVITY AT ROOM TEMPERATURE IN Li0,12Na0,88Ta0,25Nb0,75O3 SYNTHESIZED AT A HIGH PRESSURE

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2020
A ferroelectric solid solution Li0,12Na0,88Ta0,25Nb0,75O3 with a perovskite structure, synthesized under the high pressure and temperature conditions, has been studied by impedance spectroscopy in the temperature range 290-460 K.
V.V. Efremov   +2 more
doaj   +1 more source

Processing and characterization of lead-free ceramics on the base of sodium–potassium niobate [PDF]

open access: yesJournal of Advanced Dielectrics, 2018
Lead-free sodium–potassium niobate-based piezoelectric materials are most intensively studied in order to replace the widely used Pb-based ones. In this work, the effects of modification of compositions by donor and acceptor dopants in the A- and B-sites
E. D. Politova   +8 more
doaj   +1 more source

Criteria influencing the selection and design of HV and UHV DC cables in new network applications

open access: yesHigh Voltage, 2018
This study sets out to discuss the challenges that need to be addressed effectively to facilitate the adoption of long distance high-voltage and ultra-high-voltage direct current (UHVDC) power transmission cables.
Gian Carlo Montanari   +6 more
doaj   +1 more source

New materials based on InP-ZnS system for semiconductor gas analyzers [PDF]

open access: yesОмский научный вестник, 2019
According to the developed methodology, based on the isothermal diffusion of the initial binary compounds (InP, ZnS), their physical and physicochemical properties, solid solutions of different composition ((InP)x (ZnS)1-x) have been obtained. X-ray
I. A. Kirovskaya   +9 more
doaj   +1 more source

Layered Gadolinium-Europium-Terbium Hydroxides Sensitised with 4-Sulfobenzoate as All Solid-State Luminescent Thermometers

open access: yesInorganics, 2022
Ternary layered gadolinium-europium-terbium basic chlorides were synthesised using a facile hydrothermal-microwave technique. A continuous series of solid solutions was obtained in a full range of rare earth concentrations.
Anfisa A. Rodina   +5 more
doaj   +1 more source

Phase Equilibria in the Sn–As–Sb System with Tin Concentrations of Less than 50 mol%

open access: yesКонденсированные среды и межфазные границы, 2020
Tin- and antimony-based alloys, including SnSb and other compounds of the AIVBV type, are used for the production of anodes for Li+- and Na+ion batteries.
Tatiana P. Sushkova   +5 more
doaj   +1 more source

Improvement of Abrasion Resistance of Production Equipment Wear Parts by Hardfacing with Flux-Cored Wires Containing Boron Carbide/Metal Powder Reaction Mixtures

open access: yesManagement Systems in Production Engineering, 2020
In this work was established that serial traditional hardfacing materials based on the Fe-Cr-C system are not effective for improvement of abrasion resistance of elements of equipment for production of bricks, solid fuel briquettes and for restoration of
Ivanov Oleksandr   +4 more
doaj   +1 more source

Influence of Heat Treatment and High-Pressure Torsion on Phase Transformations in TiZrHfMoCr High-Entropy Alloy

open access: yesMetals, 2023
The study focused on a 21.99 at.%Ti–22.49 at.%Zr–20.35 at.%Hf–17.45 at.%Mo–17.73 at.%Cr). Analytical techniques such as X-ray diffraction, scanning electron microscopy as well as X-ray absorption spectroscopy were employed to investigate the alloy’s ...
Alena Gornakova   +7 more
doaj   +1 more source

Electrocaloric Effect in (1−x)(0.8Na0.5Bi0.5TiO3-0.2BaTiO3)−xCaTiO3 Solid Solutions at High Electric Fields

open access: yesCrystals, 2022
Recently, promising results were obtained in studies of the electrocaloric effect in thin films. Therefore, research into this effect at high applied electric field values in bulk ferroelectrics is an important task for those scoping out materials that ...
Ojars Martins Eberlins   +5 more
doaj   +1 more source

Phase Equilibria in the Tl4PbTe3-Tl9SmTe6-Tl9BiTe6 Section of the Tl-Pb-Bi-Sm-Te System

open access: yesActa Chimica Slovenica, 2018
Phase equilibria in the section Tl4PbTe3-Tl9SmTe6-Tl9BiTe6 of the Tl-Pb-Bi-Sm-Te system were determined by combination of differential thermal analysis, powder X-ray diffraction methods as well as microhardness measurements.
Samira Imamaliyeva   +4 more
doaj   +1 more source

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