Single-Ion Magnetism of the [DyIII(hfac)4]− Anions in the Crystalline Semiconductor {TSeT1.5}●+[DyIII(hfac)4]− Containing Weakly Dimerized Stacks of Tetraselenatetracene

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Single-Ion Magnetism of the [DyIII(hfac)4]− Anions in the Crystalline Semiconductor {TSeT1.5}●+[DyIII(hfac)4]− Containing Weakly Dimerized Stacks of Tetraselenatetracene

International Journal of Molecular Sciences. 2024. Т. 25. № 25. С. 8068.

Flakina A., Nazarov D., Faraonov M., Yakushev I., Kuzmin A. V., Хасанов С. С., Zverev V., Otsuka A., Yamochi H., Kitagawa H., Konarev D.

The oxidation of tetraselenatetracene (TSeT) by tetracyanoquinodimethane in the presence of dysprosium(III) tris(hexafluoroacetylacetonate), DyIII(hfac)3, produces black crystals of {TSeT1.5}●+[DyIII(hfac)4]− (1) salt, which combines conducting and magnetic sublattices. It contains one-dimensional stacks composed of partially oxidized TSeT molecules (formal averaged charge is +2/3). Dimers and monomers can be outlined within these stacks with charge and spin density redistribution. The spin triplet state of the dimers is populated above 128 K with an estimated singlet-triplet energy gap of 542 K, whereas spins localized on the monomers show paramagnetic behavior. A semiconducting behavior is observed for 1 with the activation energy of 91 meV (measured by the four-probe technique for an oriented single crystal). The DyIII ions coordinate four hfac− anions in [DyIII(hfac)4]−, providing D2d symmetry. Slow magnetic relaxation is observed for DyIII under an applied static magnetic field of 1000 Oe, and 1 is a single-ion magnet (SIM) with spin reversal barrier Ueff = 40.2 K and magnetic hysteresis at 2 K. Contributions from DyIII and TSeT●+ paramagnetic species are seen in EPR. The DyIII ion rarely manifests EPR signals, but such signal is observed in 1. It appears due to narrowing below 30 K and has g4 = 6.1871 and g5 = 2.1778 at 5.4 K.

Research target: Physics Chemistry

Сборник трудов XXXII Международной научно-технической конференции «Радиолокация, навигация, связь»

Воронеж: Издательский дом ВГУ, 2026.

В сборник вошли материалы XXXII Международной научно-технической конференции «Радиолокация, навигация, связь» (RLNC*2026), прошедшие ре цензирование членами программного комитета конференции. Основной целью конференции является организация взаимодействия научных и научно технических коллективов для обмена опытом и новыми творческими успехами. Достижение этой цели также способствует внедрению перспективных разрабо ток, имеющих практическое значение для дальнейшего развития промышленно сти, экономики ...

Added: August 29, 2026

Pyramidal solitons: existence, instability, and interactions

Melnikov I., Pelinovsky E., Nonlinear Dynamics 2026 No. 114 Article 934

Pyramidal solitons (solitons with more than two inflection points) of the generalized Korteweg–de Vries (KdV) equation are investigated. Necessary and sufficient conditions for the existence of such structures are presented. Within the framework of the generalized Gardner equation — the simplest model that admits pyramidal solitons as solutions — it is shown that these solutions ...

Added: August 27, 2026

Non-epitaxial perovskite polariton laser diode operating under direct current

Zhukov A., Kryzhanovskaya N., Moiseev E. et al., Nature 2026 Vol. 656 P. 80–85

Reaching lasing in electrically pumped microdevices based on solution-processed semiconductors poses a substantial scientific and technological challenge. Halide perovskites offer a promising platform for electrical injection1, as their optically excited single-crystal cavities2–4 and predesigned5,6 or postprocessed microstructures7,8 have exhibited low lasing threshold. Indirect electrical pumping of a dual-cavity perovskite laser was recently obtained9, using a well-established technological concept of embedding a ...

Added: August 27, 2026

Monometallic Ln3+ and heterometallic Ln3+–Cd2+ complexes based on pentafluorophenylacetic acid: efficient control of dimension and luminescent properties

Belousov Y., Кискин М. А., Sidoruk A. et al., Australian Journal of Chemistry 2022 Vol. 75 No. 9 P. 572–580

Four new complexes [Ln(pfaa)3(H2O)2]n (Ln = Eu (1), Tb (2)) and [Ln2Cd2(pfaa)10 (phen)2(EtOH)2]·2MeCN (Ln = Eu (3), Tb (4), phen = 1,10-phenanthroline) based on pentaphorphenylacetic acid (Hpfaa) have been prepared and completely investigated. The structures of compounds 1 and 3 were studied by single crystal X-ray diffraction analysis: the isostructural complexes 1 and 2 represent ...

Added: August 26, 2026

Understanding the electric double layer at electrode–electrolyte interfaces, Part III: crystallographic-face dependence of silver capacitance in aqueous NaF solutions

Mazur D., Brandyshev P., Doronin S. V. et al., Electrochimica Acta 2026 Vol. 577 Article 149729

The electric double layer (EDL) at a single-crystal metal surface is controlled not only by the electrolyte composition and the electrode potential, but also by the atomic structure of the surface itself. This makes the Ag(hkl)/NaF interface a stringent test for continuum theories of the EDL. In the third part of our series, we examine ...

Added: August 20, 2026

Giant magnetocaloric effect in the quaternary Fe–Rh–Pd–Ir alloy: Experimental and first-principles study

Gimaev R., Karpenkov A., Shelkovyi F. et al., Journal of Alloys and Compounds 2026 No. 1080 Article 190307

The magnetothermal properties of the quaternary Fe49Rh46.1Pd3.1Ir1.8 alloy are investigated by a combination of first-principles calculations, structural characterization, magnetometry, calorimetry, and direct measurements of the adiabatic temperature change. An exceptional magnetocaloric response is obtained, with ΔTad reaching −11.9 K in a field of 1.85 T under the discontinuous protocol and −8.6 K under the continuous ...

Added: August 18, 2026

Quantum viscosity mechanism of dissipative dynamics in the Dicke model expressed via Lindblad equation of motion

Beck M. E., Seidov S., Mukhin S., Physical Review A: Atomic, Molecular, and Optical physics 2026

Quantum dissipation is studied in the superradiant phase of the extended Dicke model. It is demonstrated analytically by quantum mechanical derivation of the Lindblad equation for the Dicke model in the superradiant state coupled to Caldeira-Leggett thermal bath that the effective viscosity appearing in the semiclassical equations of motion of polaritonic condensate survives in the zero-temperature limit ...

Added: August 13, 2026

Analytical solution of coupled self-consistency and linearized Usadel equations for dirty superconductors near 𝑇𝑐 and with the proximity effect

S. S. Seidov, N. G. Pugach, Physical Review B: Condensed Matter and Materials Physics 2026 Vol. 114 No. 7 Article 074504

In this manuscript we consider a superconducting film in the vicinity of the critical temperature and presence of the proximity effect. We analytically solve the corresponding linearized Usadel equation and the self-consistency equation, defining the critical temperature. This is a system of coupled differential and integral equations for the anomalous Green's function and the order parameter of ...

Added: August 13, 2026

Hadrons in N = 2 supersymmetric QCD from non-Abelian string on 2D black hole

Ievlev E., Marshakov A., Sumbatian G. et al., Physical Review D - Particles, Fields, Gravitation and Cosmology 2026 Vol. 114 Article 046006

We continue the study of non-Abelian vortex string in 4D N =2 supersymmetric QCD (SQCD) as critical superstring, and extend this analysis to UðNÞ gauge theory with arbitrary even N and Nf = 2N number of quarks. We introduce a special mass deformation and show that the SQCD hadron spectrum is still given by the string spectrum on the ...

Added: August 13, 2026

Production of Λ hyperons in 4.0A GeV and 4.5A GeV carbon-nucleus interactions at the Nuclotron

Ratnikov F., Bocharnikov V., Journal of High Energy Physics 2026 Vol. 2026 P. 1–21

The BM@N experiment (Baryonic Matter at the Nuclotron) is the first fixed-target experiment at the JINR NICA accelerator complex. In this work, data on the interactions of a carbon-ion beam with kinetic energies of 4.0A GeV and 4.5A GeV with C, Al, Cu, and Pb targets are used to measure transverse momentum spectra and rapidity ...

Added: August 12, 2026

Hall effect in electrolyte solutions: Self-consistent Debye–Hückel–Onsager theory

Budkov Y., Kalikin N., Journal of Chemical Physics 2026 Vol. 165 Article 064506

A self-consistent statistical-mechanical theory of the Hall effect in electrolyte solutions is developed by extending the self-consistent Debye–Hückel–Onsager (SCDHO) framework to crossed electric and magnetic fields. The theory incorporates non-local ionic charge distributions via Slater-type form factors, regularizing the Coulomb interaction at short range, and accounts for dielectric friction through ion-specific coefficients, employing experimental values ...

Added: August 12, 2026

Charge-controlled binding, alloy synergy, and the copper anomaly in Au–Ag–Cu dimers to clusters: DFT-derived design rules for targeted drug delivery

Novikov A., New Journal of Chemistry 2026 Vol. 50 P. 13931–13957

The rational design of coinage metal nanocarriers requires a mechanistic understanding of metal-drug binding and predictive descriptors that translate molecular interactions into design rules. Using DFT (B3LYP-D3BJ/def2-TZVP, SMD water), we systematically investigated the binding of 5-fluorouracil (5-FU) and levodopa (l-DOPA) to neutral and cationic homo- and heteronuclear dimers of Au, Ag, and Cu (Au2, Ag2, ...

Added: August 12, 2026

Data-Efficient Unsupervised Recalibration of Calorimeter Sensor Arrays Using Wasserstein Adversarial Learning

Ali S., Bocharnikov V., Ratnikov F. et al., Sensors 2026 Vol. 26 No. 16 Article 5024

Large distributed sensor arrays require repeated recalibration as radiation damage, material aging, gain variation, and readout drift alter channel responses. We studied a high-granularity calorimeter as a large sensor array and addressed unsupervised recalibration from two unpaired datasets: a nominal reference response and an aged response with attenuated cell-wise signals. Aging was modeled by a ...

Added: August 11, 2026

The effect of ultra-rapid electron detachment from negative ions on effective attachment coefficient in H2O:O2 and H2O:air mixtures at moderate reduced electric fields

Ponomarev A., Aleksandrov N., Journal of Physics D: Applied Physics 2026 Vol. 59 No. 31 Article 315205

Electron attachment and detachment in H2O:O2 and H2O:air mixtures are theoretically studied at moderate (40–100 Td) reduced electric fields. It is shown that there are two synergistic mechanisms of ultra-rapid electron detachment from negative ions in these mixtures, whereas these detachment channels are absent in pure gases. Effective attachment coefficient calculated with consideration for fast ion–molecule ...

Added: August 6, 2026

Conductance measurements cannot distinguish crossed Andreev reflection from elastic co-tunnelling in normal–superconductor–normal junctions

Khrapai V., Tikhonov E., Nature Physics 2026 P. 1198–1199

Feng et al.1 presented transport measurements of three-terminal normal–superconductor–normal devices based on topological insulator nanowires. They measured the full differential conductance matrix, defined as Gij = ∂Ii /∂Vj , beyond the linear response regime as a function of various control parameters. Here i, j∈ [1, 2] denote normal terminals biased by the voltages V1 and ...

Added: August 5, 2026

Modeling of the Influence of Temperature on Interaction of a Cathode with a Thin Insulating Film and a Glow Gas Discharge Plasma in a Mixture of Argon and Mercury Vapor

G. G. Bondarenko, Kristya V. I., Savichkin D. O. et al., Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques 2026 Vol. 20 No. 2 P. 417–423

A model of a glow gas discharge in a mixture of argon and mercury vapor is formulated in the presence of a thin insulating film on the cathode surface. Dependences of the discharge characteristics on the mixture temperature are calculated in the range of its variation, in which a noticeable contribution to ionization of the working gas is ...

Added: August 1, 2026

Источник одиночных фотонов с использованием коллоидных квантовых точек CdSe/CdS/ZnS на волноводах из нитрида кремния

Касимов Р. Х., Аржанов А. И., Седых К. О. et al., Оптический журнал 2026 Т. 93 № 1 С. 80–86

Предмет исследования. Использование метода капельного нанесения для изготовления источника одиночных фотонов. Цель работы. Разработка технологического процесса изготовления источника одиночных фотонов на коллоидных квантовых точках для использования их в фотон- ных интегральных схемах. Метод. На первом этапе в программе ANSYS Lumerical рассчитыва- ются период и фактор заполнения фокусирующих элементов связи на длинах волн 545 и 600 ...

Added: July 31, 2026

Salts of Tetraselenatetracene and Bis(ethylenedithio)tetrathiafulvalene with Metal Hexafluoroacetylacetonate Anions: MnII(hfac)₃⁻, CoII(hfac)₂Cl⁻, and PrIII(hfac)₄⁻

Kuzmin A. V., Flakina A., Nazarov D. et al., Crystal Growth & Design 2025 Vol. 25 P. 6332 –6344

Oxidation of tetraselenatetracene (TSeT) and bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF) by p-chloranil in the presence of metal hexafluoroacetylacetonates: MnII(hfac)₂, CoII(hfac)₂ and PrIII(hfac)₃ followed by precipitation of crystals by n-hexane produces (TSeT₁.₅)⁺{MnII(hfac)₃⁻} (1), (TSeT₁.₅)⁺{PrIII(hfac)₄⁻} (3), (TSeT₂)⁺{CoII(hfac)₂Cl⁻} (4), and (ET₃)⁺{MnII(hfac)₃⁻} (5). Thioindigo dye is introduced into (TSeT₁.₅)⁺(Thioindigo₁.₅){MnII(hfac)₃⁻} (2) due to the appearance of specific C=O···(Se−Se bond) interactions accompanied by the ...

Added: May 6, 2026

Polymorphism and Crystallization of Sodium Acetate

Kalle P., Bezzubov S., Vener M. et al., Crystal Growth & Design 2025 Vol. 25 No. 20 P. 8658–8664

Sodium acetate (NaOAc), a simple and widely used compound, has been studied structurally in several works; still, uncertainties concerning its polymorphism remain. In the present study, the crystallization conditions of the known polymorphs of anhydrous NaOAc were clarified, whereas their crystal structures were corrected. Two new polymorphs were discovered, one of which (NaOAc II) crystallizes ...

Added: October 15, 2025

Методы детектирования взрывоопасных концентраций водорода: сравнительный анализ и преимущества оптических сенсоров

Кузьминых И. О., Kuzin A., Флоря И. Н. et al., Нано- и микросистемная техника 2025 Т. 27 № 4 С. 184–194

В работе рассмотрены основные варианты детектирования водорода, а также приведены требования, которые предъявляются к сенсорам водорода. Проанализированы преимущества и недостатки существующих решений по детектированию водорода и проведен сравнительный анализ основных метрик коммерчески доступных сенсоров водорода. Было установлено, что оптические сенсоры преодолевают основную проблему существующих сенсоров – использование электрического тока в чувствительной зоне сенсоров. Данная обзорная ...

Added: April 30, 2025

Superconductivity in thin films of RuN

A.S. Ilin, Strugova A. O., I.A. Cohn et al., PHYSICAL REVIEW MATERIALS 2024 Vol. 8 No. 7 Article 074801

Superconductivity has been found in RuN films obtained by reactive magnetron sputtering. This novel member of the metal nitride superconductors family has a critical temperature of the superconducting transition that varies depending on the substrate, ranging from 0.77 K to 1.29 K. The parameters of the crystal lattice of the superconducting films have been determined: ...

Added: February 25, 2025

On the Magnetic Properties of High Entropy Intermetallic Compounds

Ahmad Ostovari Moghaddam, Zaitseva O., Uporov S. et al., Iranian Journal of Materials Science and Engineering 2024 Vol. 21 No. 3 P. 16–22

High entropy intermetallic compounds (HEICs) are an interesting class of materials combining the properties of multicomponent solid solutions and the ordered superlattices in a single material. In this work, microstructural and magnetic properties of (CoCuFeMnNi)Al, (CoCuFeMnNi)Zn3, (FeCoMnNiCr)3Sn2, (FeCoNiMn)3Sn2 and Cu3(InSnSbGaGe) HEICs fabricated by induction melting are studied. The magnetic properties of the HEICs were determined mainly by the nature ...

Added: January 12, 2025

Sodium Cerium Phosphate, (Na,Ce)2Ce(PO4)2 · xH2O, with Mixed Cerium Oxidation States

Alexander E. Baranchikov, Kozlova T., Sergey Ya. Istomin et al., ChemistrySelect 2024 Vol. 9 No. 17 Article e202401010

A previously unknown double ceric sodium phosphate hydrate Na1.97Ce1.03(PO4)2 ⋅ xH2O containing both ceric and cerous cations was obtained by the hydrothermal treatment of amorphous ceric phosphate mixed with a sodium hydroxide aqueous solution. The presence of Ce3+ in the structure was proved by HERFD-XANES and ESR spectroscopy. Iterative transformation factor analysis of HERFD-XANES data allowed estimating ...

Added: December 26, 2024

Expanding the Limits of Organic Energetic Materials: High-Performance Alliance of 1,3,4-Thiadiazole and Furazan Scaffolds

Deltsov I., Ivan V. Ananyev, Meerov D. et al., Journal of Organic Chemistry 2023 Vol. 89 No. 1 P. 174–182

A majority of known and newly synthesized energetic materials comprise polynitrogen or nitrogen–oxygen heterocycles with various explosophores. However, available structural combinations of these organic scaffolds are finite and are about to reach their limits. Herein, we present the design and synthesis of a series of sulfur-containing polyazole structures comprising 1,3,4-thiadiazole and furazan rings linked by ...

Added: June 24, 2024