76 research outputs found
High Dielectric Permittivity in AFeBO Nonferroelectric Perovskite Ceramics (A - Ba, Sr, Ca; B - Nb, Ta, Sb)
AFeBO(A- Ba, Sr, Ca; B-Nb, Ta, Sb) ceramics were
synthesized and temperature dependencies of the dielectric permittivity were
measured at different frequencies. The experimental data obtained show very
high values of the dielectric permittivity in a wide temperature interval that
is inherent to so-called high-k materials. The analyses of these data establish
a Maxwell-Wagner mechanism as a main source for the phenomenon observed.Comment: 6 pages, 7 figure
Defects on the ferroelectric and photocatalytic properties of La3+ ions doped SrBi2Nb2O9 materials
Phase formation and relaxor properties of lead-free perovskite ceramics on the base of sodium-bismuth titanate
The work was supported by the Russian Foundation for Basic Research (Projects 16-53-48009, 17-03-00542)
Study of Acentricity in Complex Perovskites Based on Tellurium Oxide Using Optical Second Harmonic Generation (SHG)
Money Laundering and Terrorist Financing Through the Onion Routing (on the Example of TOR Browser )
This article is devoted to the use of onion routing for AML/CFT and the question of its regulation through various legal acts. The browser TOR is examined as the best implementation of this type of routing. The article describes precedents of TOR misuse
Phase formation, structure and dielectric properties of ceramics (Na0.5Bi0.5)TiO3–(K0.5Na0.5)NbO3–BiFeO3
Influence of BiFeO3 (BF) on phase formation, unit cell parameters, microstructure, dielectric and ferroelectric properties of solid solutions close to the morphotropic phase boundary in the (Na0.5Bi0.5)TiO3–(K0.5Na0.5)NbO3 system additionally modified by the low-melting KCl additives has been studied. The formation of pure perovskite structure samples decrease in the unit cell parameters and increase in the TC value stimulated by the BF addition have been revealed. It was proved that modification of compositions by small amounts of the BF and KCl additives leads to improvement of dielectric parameters
Specific features of the structure and electrical conductivity of the magnetically ordered oxide (La0.9Sr0.1)(Fe0.8Mg0.2)O3−y
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