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Solubility of deuterium and hydrogen in fcc iron at high pressures and temperatures
PHYSICAL REVIEW MATERIALS. 2019. Vol. 3. No. 11. Article 113604.
Antonov V., Gurev V., Kulakov V., Kuzovnikov M., Sholin I., Zuykova V.
An isobar x(T) of deuterium solubility in iron is constructed at P = 6.3 GPa and 100 ≤ T ≤ 800 °C based on the results of thermal desorption analysis of FeDx samples produced by quenching under high D2 pressure to the temperature of liquid nitrogen. The experiment confirms the value of x = 0.64 at T = 715 °C proposed previously in a neutron diffraction work [Machida et al., Nature Commun. 5, 5063 (2014)] for γ iron deuteride under the assumption that deuterium atoms occupy both octa- and tetrahedral interstices in its fcc metal lattice. An estimate of ΔV/x = 2.2 Å3/atom D made in that work for the deuterium-induced volume expansion ΔV(x) of fcc iron is also confirmed. To prove that the absorption of protium leads to a similar volume expansion, we constructed an isotherm x(P) of hydrogen solubility in fcc iron.
Dmitriev A., Kornilov V., Batienkov R., Lecture Notes in Civil Engineering 2026 Vol. 886 P. 249–255
Numerous studies have provided compelling evidence that the probability distribution of avalanche sizes follows a power law, and that 1/f noise is present in the stochastic dynamics of landslides. We present a theoretical explanation of these phenomena within the framework of self-organized criticality theory, proposing a discrete-time model in the form of a sandpile cellular ...
Added: October 13, 2026
Dmitriev A., Shulman I., Lebedev A., Studies in Computational Intelligence 2026 Vol. 1265 P. 266–273
A discrete-time model is presented for the self-organization of the X/Twitter social network to the edge of a phase transition, characterized by avalanche-like propagation of information in the network. The model is based on the analogy between the critical dynamics of the X social network and sandpile cellular automata with Manna rule on the Chung-Lu ...
Added: October 13, 2026
Arutyunov K., Kharitonov I. A., Petrosyants K. O., JETP Letters 2026 Vol. 124 No. 6 P. 1–16
Superconducting properties of metallic micro- and nanowires can be entirely different from those of bulk superconductors. Of particular interest is the nonequilibrium current-induced state of a quasi-one-dimensional superconducting channel. The most interesting phenomenon here is the stepped I–V characteristic, explained by a process known as phase slip center activation. If the origin of such step-like ...
Added: October 13, 2026
Makarov D. M., Kalikin N., Fashchevsky K. A. et al., Electrochimica Acta 2026 Vol. 579 Article 150159
Machine learning (ML) has become a powerful tool for accelerating the development of carbon-based supercapacitors;
however, most published models assume that a single predictive framework can describe both conventional
porous carbons and hybrid carbon electrodes. Here, we test this assumption using a comprehensive
benchmark dataset and an extended literature-curated dataset enriched with synthesis- and electrolyte-related
descriptors. Three ML algorithms ...
Added: October 13, 2026
Махлуф М., Ozhegov R., Elezov M. et al., Фотоника 2026 Vol. 20 No. 6 P. 414–423
This paper compares the ranging precision of direct time-of-flight (dToF) and non-line-of-sight (NLOS) LiDAR architectures, both using a superconducting nanowire single-photon detector (SNSPD). Both systems operate at 1550 nm with a 50 ps pulsed laser and time-correlated single-photon counting (TCSPC). The dToF configuration achieved approximately 100 µm precision at 10 m, while the NLOS configuration achieved 500 µm precision for ...
Added: October 12, 2026
Singapore: Springer, 2026.
This volume presents the Proceedings of the 34th IUPAP Conference on Computational Physics (CCP2023), held in Kobe, Japan on August 4–8, 2023. It offers a collection of peer-reviewed articles that highlight recent developments in computational and simulation research across various areas of physics. Key topics include the use of data science, quantum computing, and machine ...
Added: October 12, 2026
Goncharov A., Chibisov A., Advanced Theory and Simulations 2023 Vol. 12 No. 13 Article 2200816
Designing stable quantum computers with the ability to correct errors responsibly requires a detailed understanding of the physical processes that underlie these devices. In this study, detailed quantum mechanical simulations of the atomic structure, charge distribution of electron density, and distribution and orientation of magnetic and quantum states as a function of applied external pressure ...
Added: October 11, 2026
Chibisov A., Gnidenko A., Chibisova M. et al., FlatChem 2023 Vol. 41 Article 100533
Manufacturing precise quantum computers with small errors in quantum operations, long coherence times, and low power consumption is the most important challenge in modern nanoelectronics. To understand the operating modes of such calculators in detail, both the optimal arrangement of the qubit system within the structure and changes in its magnetic properties must be comprehensively ...
Added: October 11, 2026
P. M. Marychev, A. A. Shanenko, Physical Review B: Condensed Matter and Materials Physics 2026 Vol. 114 No. 7 Article 074509
We investigate the effect of weak interband impurity scattering on the intertype (IT) domain between type-I and type-II superconductivity in diffusive two-band superconductors. Our results show that the significant broadening of the IT domain with increasing band diffusivity ratio, previously established in the absence of interband scattering, persists under weak interband scattering. However, depending on ...
Added: September 7, 2026
Кондрина К. М., Уродкова Е. К., Senchikhin I. et al., Журнал технической физики 2025 Т. 95 № 3 С. 489–497
Изучение свойств водных дисперсий легированных бором наноалмазов показывает их высокую устойчивость к агрегации и выпадению в осадок по сравнению с детонационными наноалмазами. Легированные бором наноалмазы получены пиролизом 9-борабицикло[3.3.1]нонан димера C16H30B2 под давлением 8−9GPa и температурах 1250 ◦C−1300 ◦С. Оцененная из спектров комбинационного рассеяния света концентрация бора синтезированных наноалмазов составила 1021 cm−3, что соответствует сильному легированию. ...
Added: February 19, 2026
Semenok D., Zhou D., Chen W. et al., Annalen der Physik 2025 Vol. 538 No. 1 Article e00467
We review five years of experimental and theoretical attempts (2020–2025) to enhance the superconducting critical temperature (Tc) of hydrogen-rich compounds by alloying binary superhydrides with additional elements. Despite predictions of higher Tc in ternary systems such as La–Y–H, La–Ce–H, and Ca–Mg–H, experiments consistently show that the maximum Tc in disordered ternary superhydrides does not exceed that of the ...
Added: January 24, 2026
Koreyev A. S., P.S. Berezhnoy, Gorbunov A. V. et al., Physical Review B: Condensed Matter and Materials Physics 2024 Vol. 110 No. 16 Article 165417
The phase diagram of the “gas-magnetoexciton condensate” transition of an excited two-dimensional electron
system placed in a quantizing magnetic field has been constructed in the “temperature-laser excitation power
density” coordinates. Based on the experimental data, we can conclude that the condensate is a collective,
incompressible in real space, excited state of a quantum Hall insulator. ...
Added: January 10, 2025
Bunzarova N. Z., Pesheva N. C., Povolotsky A. M., Physical Review E - Statistical, Nonlinear, and Soft Matter Physics 2024 Vol. 109 No. 4 Article 044132
е
The totally asymmetric simple exclusion process with generalized update is a version of the discrete time totally asymmetric exclusion process with an additional interparticle interaction that controls the degree of particle clustering. Though the model was shown to be integrable on the ring and on the infinite lattice, on the open chain it was studied ...
Added: July 9, 2024
Kuzovnikov M., Antonov Vladimir E., Kulakov V. et al., PHYSICAL REVIEW MATERIALS 2023 Vol. 7 No. 2 Article 024803
Zirconium trihydride and, for comparison, trideuteride with hexagonal close-packed (hcp) metal lattices
were synthesized at a hydrogen/deuterium pressure of 9 GPa and a temperature of 873 K using toroid-type
high-pressure chambers. After a rapid cooling (quenching) to 100 K and lowering the pressure to atmospheric,
the quenched sample was removed from the chamber and studied by hot extraction ...
Added: February 13, 2024
Dmitriy S. Shapiro, Sergey V. Remizov, Lebedev A. et al., Physical Review A: Atomic, Molecular, and Optical physics 2022 Vol. 105 No. 2 Article 023321
A dimerized fermion chain, described by Su-Schrieffer-Heeger (SSH) model, is a well-known example of a one-dimensional system with a nontrivial band topology. An interplay of disorder and topological ordering in the SSH model is of great interest owing to experimental advancements in synthesized quantum simulators. In this paper, we investigate a special sort of a ...
Added: July 26, 2023
Tararushkin E., Pisarev V., Kalinichev A. G., Minerals 2023 Vol. 13 No. 3 Article 408
The behavior of brucite over wide ranges of temperatures and pressures is of great interest
for fundamental geochemistry and geophysics. Brucite layers and their octahedral Mg(OH)6 structural
units constitute an important structural part of layered dense magnesium hydrous silicates
(DMHS), which play a major role in mineral equilibria controlling water balance in the subduction
zones of the upper mantle. ...
Added: April 23, 2023
Рыжкин М. И., Рыжкин И. А., Кашин А. М. et al., Письма в Журнал экспериментальной и теоретической физики 2020 Т. 112 № 7-8(10) С. 531–538
The pressure dependence of the proton conductivity of water ice is studied theoretically. It is shown that the decrease in the hydrogen bond length leads to the decrease in the formation energy of ionic defects and to the increase in the formation energy of bond defects. As a result, the partial conductivity of ionic defects, ...
Added: October 31, 2022
Iskrina A., Bobrov A., Spivak A. et al., Journal of Physics and Chemistry of Solids 2022 Vol. 171 Article 111031
Synchrotron-based high-pressure single-crystal X-ray diffraction experiments were conducted on a new CaFe1.2Al0.8O4 phase at ambient temperature and up to a maximum pressure of 61 GPa. Crystals of CaFe1.2Al0.8O4 were synthesized at 24 GPa and 1500 °C. This phase has orthorhombic unit cell parameters (a = 8.9785(1) Å, b = 2.9158(1) Å, c = 10.4253(6) Å, V = 286(3) Å3, Z = 8), crystallizes with a space group Pnma, ...
Added: October 26, 2022
Alexey V. Kuzmin, Meletov K., Salavat S. Khasanov et al., Journal of Physical Chemistry C 2021 Vol. 125 No. 30 P. 16576–16582
The pressure-induced charge transfer in a molecular complex of fullerene with ferrocene, C60·{Fe2+(η5 -C5H5)2•}2, was studied by ab initio calculations, single-crystal X-ray diffraction analysis, and Raman spectroscopy at pressures up to 5.3 GPa. The calculations based on high-pressure crystal structure data, performed by the fragment molecular orbital method and hybrid density functional level chemistry, show ...
Added: October 21, 2022
Alexey V. Kuzmin, Meletov K., Faraonov M., Journal of Physical Chemistry C 2022 Vol. 126 No. 7 P. 3688–3695
X-ray diffraction, optical spectroscopy, and numerical calculations were carried out on pristine ferrocene Fe2+(η5-C5H5)2– single crystals under various pressure/temperature conditions. Structural data were obtained at room temperature and pressures up to 6.5 GPa as well as at ambient pressure and low temperatures up to 100 K. The iron–carbon bond length (l = 2.043 Å under ...
Added: October 21, 2022
Antonov V., Muzalevsky V., Orlov N., International Journal of Hydrogen Energy 2022 Vol. 47 No. 34 P. 15198–15208
It is shown that the T-x projection of the miscibility gap in solid interstitial MeHx solutions
will be symmetric and the pressure vs. temperature dependence of the corresponding
isomorphic phase transformation will be determined by the reaction Me + (z/2)H2 = MeHz
with a fixed z value attained at T -> 0 K, if the mixing Gibbs energy of ...
Added: May 3, 2022
Vagov A., Wolf S., Croitoru M. et al., Communications Physics 2020 Vol. 3 Article 58
Experiments with the crossover superconductors between standard types I and II revealed exotic magnetic flux patterns where Meissner domains coexist with islands of the vortex lattice as well as with vortex clusters and chains. Until now a comprehensive theory for such configurations has not been presented. We solve this old-standing fundamental problem by developing an approach ...
Added: February 24, 2022
V. E. Antonov, Bazhenov A. V., Bashkin I. O. et al., Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques 2020 Vol. 14 No. 5 P. 995–1002
This paper is a brief summary of the results of long-term experimental studies of C60Hx hydrofullerites
with a hydrogen content of up to x ~ 60 or more, obtained by loading C60 fullerites with hydrogen at
pressures up to 9 GPa and temperatures up to 500°C. Basically, this is an overview of already published data.
Some results for ...
Added: November 17, 2021
Антонов В.Е., Баженов А. В., Башкин И. О. et al., Поверхность. Рентгеновские, синхротронные и нейтронные исследования 2020 № 10 С. 3–11
This paper is a brief summary of the results of long-term experimental studies of C60Hx hydrofullerites
with a hydrogen content of up to x ~ 60 or more, obtained by loading C60 fullerites with hydrogen at
pressures up to 9 GPa and temperatures up to 500°C. Basically, this is an overview of already published data.
Some results for ...
Added: October 24, 2021