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Crystallization of Niobium Alkali-Silicate Glasses Under Thermal Poling
Ch. 38. P. 161–163.
Reshetov I., Zhurikhina V. V., Tagantsev D., Kaasik V., Redkov A., Melehin V.
Crystallization of a Na 2 O-K 2 O-Nb 2 O 5 -SiO 2 glass under thermal poling and subsequent annealing was studied by Raman spectroscopy and X-ray diffractometry. It was found that the poling and subsequent thermal treatment lead to partial crystallization of the poled region of the glass, which should be related with watering the glass in the course of the thermal poling.
In book
St. Petersburg: IEEE, 2021.
Smirnov A., Mantsevich V. N., Saitov S. R. et al., Journal of Applied Physics 2026 Vol. 139 Article 185702
This work presents a comprehensive investigation into the temperature-dependent thermally stimulated conductivity and photoconductivity of vacuum-annealed thin films based on core–shell CdSe/CdS nanoplatelets passivated with oleic acid ligands. Controlled thermal annealing under vacuum conditions leads to a substantial increase in both dark and photoinduced conductivity, which is primarily attributed to partial desorption of the ligands. ...
Added: May 18, 2026
M. A. Prosnikov, Pisarev R. V., Christianen P. C., Physical Review B: Condensed Matter and Materials Physics 2026 Vol. 113 No. 9 Article 094423
Rhombohedral CoTiO3 is a Dirac-type antiferromagnet with unique nodal magnetic dynamics, a strong Zeeman-phonon effect, and multiple spin-orbital excitations. The intricate interaction between these excitations makes it difficult to precisely understand its properties. We report the observation of strong spin-phonon coupling for several phonon modes, as well as the Zeeman splitting of the degenerate phonon modes with 𝐸𝑔 symmetry. ...
Added: March 12, 2026
Leon L. Ogorodnikov, Sergey S. Vergeles, Physical Review Fluids 2025 Vol. 10 No. 12 Article 124702
We study the spatial dependence of pair correlation functions of velocity field com ponents in a rotating turbulent fluid on a background of a coherent geostrophic vortex. The statistics of the turbulent pulsations are determined by their dynamics, which is the dynamics of inertial waves affected by the differential rotation in the vortex and a ...
Added: February 24, 2026
Daniil A. Bardonov, Minyaev M. E., Puntus L. et al., MolBank 2025 Vol. 2025 No. 4 Article M2102
A new bis(cyclopentadienyl) terbium(III) complex with 1,2,4-triphenylcyclopentadienyl and 4,4,4-trifluoro-1-phenylbutane-1,3-dionate ligands was synthesized. Single-crystal X-ray analysis revealed a mononuclear bis(cyclopentadienyl) complex with a diketonate ligand in the bisector plane. The compound under study exhibits a ligand ligand charge transfer state (LLCT), according to optical spectroscopy and crystallographic data. ...
Added: February 19, 2026
Tatarin S., Zhuravlev I., Minin M. et al., Inorganic Chemistry 2025 Vol. 64 No. 50 P. 24579–24593
To date, the design of stable panchromatic metal complexes simultaneously exhibiting reversible redox behavior remains a challenging endeavor, underscoring the need for new ligand platforms to expand their absorption spectrum. In this study, we report the synthesis and characterization of octahedral bis-cyclometalated iridium(III) complexes with redox-active o-semiquinone/o-iminosemiquinone ancillary ligands, which exhibit exceptional chemical stability and intense ...
Added: February 17, 2026
Bovkunova A., Bazhina E., Shmelev M. et al., Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya 2025 Vol. 51 No. 6 P. 472–487
The reaction of manganese(II) chloride with the azomethine ligand 4-((1H-pyrrol-2-yl)methylene-amino)-4H-1,2,4-triazole (HPyrtrz) affords crystals of 1D polymeric compound [MnII(HPyrtrz)(H2 O)Cl2]n (I). The addition of the coligand 1,10-phenanthroline (Phen) to the synthesis of compound I results in the sequential crystallization of two products: 1D polymeric compound [MnII(Phen)Cl2]n (II) and mononuclear complex [MnII(Phen)2Cl2]·HPyrtrz (III). Complex III is isolated ...
Added: February 10, 2026
Гречишникова А. А., Трофимчук Е. С., Егоров А. А. et al., Перспективные материалы 2025 № 11 С. 17–28
Composite gels based on polyvinylpyrrolidone (PVP) and alginate (Alg) with carbonate hydroxyapatite (CHA) were obtained. Their kinematic and dynamic viscosities were measured. It has been shown that the introduction of CHA in an amount of up to 40 % by weight of polymers leads to a decrease in kinematic viscosity, and the introduction of 50 ...
Added: November 26, 2025
D. A. Bardonov, K. A. Lysenko, I. E. Nifantiev et al., Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya 2025 Vol. 51 No. 3 P. 211– 217
in the presence of 1,3,5-trimethyl-1,3,5-triazacyclohexane (Me3tach) gives complexes of the
type [Cp'Y(Me3tach)Cl2] (Cp' = Ph2C5H3 (CpPh2) (I), Ph3C5H2 (CpPh3) (II), Ph4C5H (CpPh4) (III). The
molecular structure of complexes I–III was established by X-ray diffraction (CCDC nos. 2406644 (I),
2406645 (II), 2406646 (III)). The main structural parameters of all of the obtained monocyclopentadienyl
complexes were similar, irrespective of the number ...
Added: November 9, 2025
Shavlovich A. V., Reshetov I., Tagantsev D. et al., Journal of Physics: Condensed Matter 2024 Vol. 36 No. 21 Article 21LT01
Two sodium phosphate glasses with different structure (meta- and orthophosphate ones) were thermally poled well below the glass transition temperatures. Glass with an orthophosphate structure (glass LA30) demonstrated a typical behavior of polarization current, that is, monotonic current decrease; however, in glass with a metaphosphate structure (glass LA10) the current first increased for 15–20 min and only then started ...
Added: September 22, 2025
S.A. Scherbak, Terpitskiy А. N., Reshetov I. et al., ACS Photonics 2025 Vol. 12 No. 4 P. 2016–2026
Standard e-beam lithography system is used for writing a set of charged regions in glass, which provide patterned
area possessing electric-field-induced quadratic optical nonlinearity. Patterned glass provides second optical harmonic generation (SHG) under a normal incident fundamental wave. Grating-like regions with periodicity from 2 to 32 μm demonstrate diffractionlike radiation patterns due to the interference of the second harmonic waves in the ...
Added: September 22, 2025
Erzunov D., Alekseeva A., Sarvin I. et al., Journal of Porphyrins and Phthalocyanines 2024 Vol. 28 No. 09n10 P. 701–709
Peripheral phenyl-substituted metal phthalocyanines with thio and oxa substitution in the spacer bridge fragment were obtained in the work. Spectroscopic properties were studied for the obtained complexes, and the main patterns of behavior and characteristics change depending on the solvent and the nature of the spacer atom. It is shown that the replacement of an oxygen ...
Added: September 16, 2025
Санина Н. А., Конюхова А. С., Корчагин Д. В. et al., Журнал неорганической химии 2023 Т. 68 № 9 С. 1165–1180
New neutral binuclear tetranitrosyl iron complexes of the composition [Fe2R2(NO)4] (R = 2,4-difluorothiophenyl(1) and 3,4-difluorothiophenyl(2)), donors of nitrogen oxide (NO), have been synthesized. The complexes were studied by Mossbauer, IR, and EPR spectroscopy, X-ray diffraction, and elemental analysis. The antibacterial activity and cytotoxicity in Vero cells of the complexes 1, 2 and the previously synthesized ...
Added: September 14, 2025
Седов В. С., Мартьянов А. К., Павленко М. И. et al., Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 2023 Vol. 382 No. 2265 Article 20230167
Tin-Vacancy (Sn-V) colour centres in diamond have a spin coherence time in the millisecond range at temperatures of 2 K, so they are promising to be used in diamond-based quantum optical devices. However, the incorporation of large Sn atoms into a dense diamond lattice is a non-trivial problem. The objective of our work is to use ...
Added: April 28, 2025
Ahmad Ostovari Moghaddam, Fereidonnejad R., Shaburova N. et al., Ceramics International 2024 Vol. 50 No. 17, Part A P. 29178–29184
Glass-ceramics have extensive industrial applications owing to their superior mechanical, optical and physicochemical properties compared to either glasses or ceramics. Herein, we leverage the concept of high entropy materials to broaden the available chemical compositions for tailoring the properties of glass-ceramics. Among various compositions explored, the high entropy glass 45SiO2-20Al2O3-15MgO-11Li2O-1.5TiO2-1.5ZrO2-2P2O5-2BaO-SnO2-CaO was identified as particularly promising, ...
Added: January 23, 2025
Аксенов О. И., Fuks A., Абросимова Г. Е. et al., Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques 2023 Vol. 17 No. 5 P. 954–959
Added: May 31, 2024
Седов В. С., Мартьянов А. К., Тяжелов И. А. et al., Diamond and Related Materials 2024 P. 111169
The annealing treatment plays a crucial role in tailoring the properties of synthetic diamond materials, especially those doped with various elements in order to form specific color centers like nitrogen-vacancy (NV), silicon-vacancy (Si-V), germanium-vacancy (Ge-V), etc. This study delves into the annealing of 175 μm-thick Ge-doped polycrystalline diamond (PCD) films grown by microwave plasma-assisted chemical vapor ...
Added: May 16, 2024
Kushnir S., Devyanina N., Roslyakov I. et al., The Journal of Physical Chemistry Letters 2024 Vol. 15 No. 1 P. 298–306
A combination of the unique porous structure and physical and chemical properties of anodic aluminum oxide (AAO) makes it widely used in cutting-edge areas of materials science and nanotechnology. Selenic acid electrolyte provides the ability to obtain AAO with low porosity and high optical transparency and thus is promising for the preparation of AAO photonic ...
Added: April 8, 2024
Дегтярева С. С., Бардонов Д. А., Лысенко К. А. et al., Координационная химия 2023 Т. 49 № 8 С. 504–512
reaction of triphenylcyclopentadienyl potassium with praseodymium and erbium chloride tetrahydrofuranates
gives, depending on the reactant ratio, tetranuclear ate complexes, [{(Ph3C5H2)Pr(THF)}2(μ2-Cl)2(μ3-Cl)3K]2(C7H8)4 (I) and [{(Ph3C5H2)Er(THF)}2(μ2-Cl)2(μ3-Cl)3K(THF)]2 (III), or
binuclear ate complexes [(Ph3C5H2)2LnCl(KCl)]2 Ln = Pr (II), Er (IV) (CCDC no. 2224244 (I),
2224243 (II), 2224245 (III), 2224242 (IV)). The structurally similar complexes I and III are based on the
{[Ln2(μ-Cl)3]2(μ-Cl)2K2} core, and ...
Added: January 28, 2024
Zhukova V., Mizuk R., Adachi I. et al., Journal of High Energy Physics 2023 Vol. 2023 Article 131
We report the first measurement of the inclusive e+e−→bb¯→D±sX and e+e−→bb¯→D0/D¯0X cross sections in the energy range from 10.63 to 11.02. Based on these results, we determine σ(e+e−→B0sB¯0sX) and σ(e+e−→BB¯X) in the same energy range. We measure the fraction of B0s events at Υ(10860) to be fs=(22.0+2.0−2.1)%. We determine also the ratio of the B0s inclusive branching fractions B(B0s→D0/D¯0X)/B(B0s→D±sX)=0.416±0.018±0.092. The results are obtained using the data collected with the Belle detector at the KEKB ...
Added: November 30, 2023
Синицын В. В., Rybchenko O., Ефимов В. Б. et al., Физика твердого тела 2023 Т. 65 № 8 С. 1307–1313
The article presents experimental studies of structural changes that occur during heating of nanosized powders of amorphous ice obtained by decay of a water-helium gel. Thermal annealing of the obtained samples was carried out by short exposures (about 15 minutes) at different temperatures in the range of 110-230K. The behavior of the amorphous phase during ...
Added: October 5, 2023
Valyavin G., Beskin G., Valeev A. et al., Astrophysical Bulletin 2022 Vol. 77 No. 4 P. 495–508
We present a brief description of a joint Russian-Korean project abbreviated as EXPLANATION (EXoPLANet And Transient events InvestigatiON). The project is aimed at a massive photometric, speckle-interferometric, spectral, and radio bolometric search for non-stationary events in the Universe, as well as the study of exoplanets. The core of the project consists of several 0.07–2.5-m optical ...
Added: June 26, 2023