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The Sm2S3-X-SmS-Sm2O2S refractory system: thermal analysis, phase diagram, and properties of the phases / I. O. Yurev, A. S. Aleksandrovsky, D. N. Kamaev [et al.] // J. Therm. Anal. Calorim. - 2024. - Vol. 149, Is. 5. - P. 2057-2073, DOI 10.1007/s10973-023-12792-z. - Cited References: 90. - The authors thank Prof. P.P. Fedorov, Chief Researcher of Prokhorov Institute of General Physics, Russian Academy of Sciences, for scientific advices. The authors thank N.I. Lozhkin, engineer of the Department of Inorganic and Physical Chemistry, Tyumen State University for the technical support of the visual thermal analysis setup. The authors thank N.A. Shulaev, research engineer of the Center for Nature-Inspired Engineering, Tyumen State University, for determining the elemental composition of samples by scanning electron microscopy. The authors thank I.V. Palamarchuk, research engineer of the Center for Collective Use "Rational Nature Management and Physical and Chemical Research" of the Tyumen State University, for measuring the diffuse reflectance spectra. The authors thank Doctor of Philology O.V. Trofimova, Professor at the Institute of Social Sciences and Humanities of the Tyumen State University, for her advices on academic writing. - This study was funded by the Russian Science Foundation, Project No. 23–23-00488 “Search for EMF generation conditions in gradient ceramics of samarium monosulfide (SmS)” . - ISSN 1388-6150. - ISSN 1588-2926
Кл.слова (ненормированные):
Samarium sulfides -- Refractory system -- Thermal analysis -- Ternary eutectic -- Phase diagram -- Band gap
Аннотация: Samarium monosulfide, a strain gauge and barometric material, exists in equilibrium with Sm3S4 and Sm2O2S in the S-Sm–O system. Therefore, studying phase equilibria in the refractory Sm2S3-X-SmS-Sm2O2S system is a scientifically interesting task. In this system, 49 samples were synthesized and studied by powder XRD, differential scanning calorimetry, visual thermal analysis, and microstructural analysis. Melting points of Sm3S4, SmS, and Sm2O2S compounds were determined. Eutectic diagrams of Sm3S4-Sm2O2S, SmS-Sm2O2S, SmS-Sm3S4 systems were constructed. Temperatures and compositions of the binary eutectic points were determined. Fusion enthalpies for Sm3S4, SmS, and Sm2O2S phases were estimated using the Schröder–Le Chatelier equation. The liquidus lines were calculated using second-degree polynomials and Redlich–Kister model. Coordinates of the ternary eutectic point in the Sm3S4-SmS-Sm2O2S system were calculated using the cutting-plane method and the Scheffé method. The calculated compositions of ternary eutectic points were averaged at one most probable point, in accordance with the data on the samples microstructure. The experimental temperature of the ternary eutectic point coincides with the calculated values within the margin of error. Positions of eutectic valleys and approximate positions of isotherms in the system were established. Thermodynamic parameters of the α-Sm2S3 → γ-Sm2S3 polymorphic transition and the dependence of the Sm2S3-X composition on heat treatment conditions were determined. According to the scanning electron microscopy data, the approximate composition of the crystallized from the melt Sm2S3 sample is Sm2S2.95. The Sm10S14O phase decomposes at 1470 ± 15 °C in the course of a solid-phase reaction. The phase diagram of the Sm2S3-X-Sm2O2S system was revisited. Optical band gaps of Sm10S14O and Sm2O2S phases were determined. The Sm10S14O compound was optically characterized for the first time; its direct and indirect optical bandgaps were found equal to 2.48 and 2.37 eV, respectively. The determined direct and indirect optical bandgaps of Sm2O2S (4.4 eV and 3.95 eV, respectively) agree with the earlier measurements, thus confirming the accuracy of the chosen synthesis procedures.

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Держатели документа:
Institute of Chemistry, Tyumen State University, Volodarsky Str. 6, Tyumen, 625003, Russia
Department of Physical and Applied Chemistry, Kurgan State University, Sovetskaya Str. 63/4, Kurgan, 640020, Russian Federation
Federal Research Center KSC SB RAS, Kirensky Institute of Physics, Akademgorodok Str. 50, Building 38, Krasnoyarsk, 660036, Russia
Siberian Federal University, Svobodnyj Av. 79, Krasnoyarsk, 660079, Russia
Institute of Physical Materials Science, SB RAS, Sakhyanova Str. 6, Ulan-Ude, 670047, Russian Federation
Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences, Pervomaiskaya Str. 91, Yekaterinburg, 620990, Russian Federation

Доп.точки доступа:
Yurev, I. O.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Kamaev, D. N.; Polkovnikov, A. A.; Grigorchenko, V. M.; Yarovenko, A. A.; Zelenaya, A. E.; Parfenova, M. D.; Andreev, O. V.
}
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First-principles calculations to investigate optical, phonon and electronic properties of quaternary sulfides SrRECuS3 (RE = La, Nd, Tm) / V. A. Chernyshev, A. V. Ruseikina, M. V. Grigoriev [et al.] // Inorg. Chem. Commun. - 2024. - Vol. 165. - Ст. 112449, DOI 10.1016/j.inoche.2024.112449. - Cited References: 43. - This work was supported by The Ministry of Science and Higher Education of the Russian Federation (project No. FEUZ-2023-0017) . - ISSN 1387-7003. - ISSN 1879-0259
Кл.слова (ненормированные):
Rare-earth elements -- Quaternary sulfide -- Optical properties -- Ab initio calculations -- Spectroscopy
Аннотация: The structure and properties of three layered heterometallic quaternary sulfides SrLaCuS3, SrNdCuS3 and SrTmCuS3 were studied for the first time using first-principles calculations in the stoichiometric and nonstoichiometric approximations. The applied DFT-based computations were performed using a hybrid functional with the contribution of nonlocal exchange in the Hartree-Fock formalism. It was revealed that the nonstoichiometry of SrLaCuS3 and SrNdCuS3 must be considered for modeling phonon spectra, elastic properties and band gaps. The wavenumbers and types of the Raman and "silent" modes at the Г-point were determined. From the analysis of displacement vectors, the degree of participation of ions in each mode was determined. The elastic constants and elastic moduli of the reported sulfides were calculated.

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Держатели документа:
Institute of Natural Sciences and Mathematics, Ural Federal University named after the First President of Russia B.N. Yeltsin, Ekaterinburg 620002, Russian Federation
University of Tyumen, Tyumen 625003, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russian Federation
Scientific and Educational and Innovation Center for Chemical and Pharmaceutical Technologies, Ural Federal University named after the First President of Russia B.N. Yeltsin, Ekaterinburg 620002, Russian Federation

Доп.точки доступа:
Chernyshev, V. A.; Ruseikina, A. V.; Grigoriev, M. V.; Krylova, S. N.; Крылова, Светлана Николаевна; Safin, D. A.
}
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    Magnetoresistance and magnetoimpedance in holmium manganese sulfides / O. B. Romanova, S. S. Aplesnin, M. N. Sitnikov [et al.] // Appl. Phys. A. - 2022. - Vol. 128, Is. 2. - Ст. 124, DOI 10.1007/s00339-021-05198-x. - Cited References: 46. - Funding was provided by Russian Foundation for Fundamental Investigations (20-42-243002) . - ISSN 0947-8396. - ISSN 1432-0630
   Перевод заглавия: Магнитосопротивление и магнитоимпеданс в гольмиевом сульфиде марганца

РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
PHASE-SEPARATION
IMPEDANCE
Кл.слова (ненормированные):
Sulfides -- I-V characteristics -- Electrical polarization -- Magnetoresistance -- Magnetoimpedance
Аннотация: The structure, transport characteristics, real and imaginary parts of the impedance components and electric polarization of the HoXMn1-XS (X = 0.1 and 0.2) system have been investigated in the temperature range of 80-500 K in magnetic fields of up to 12 kOe. The morphology of synthesized samples has been studied. The influence of the magnetic field on the transport characteristics, on both direct and alternating currents of holmium manganese sulfides, have been established. The negative effects of DC magnetoresistance in the region of the magnetic phase transition and positive AC magnetoimpedance up to 4% in the paramagnetic region have been established. The critical temperatures of the existence of the electric polarization have been determined. At a substitution concentration of X = 0.1, the activation character of the relaxation time versus temperature has been found. The diffusion contribution for the composition with X = 0.2 has been established by the impedance hodograph.

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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660014, Russia.

Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Sitnikov, M. N.; Udod, L. V.; Удод, Любовь Викторовна; Kharkov, A. M.; Russian Foundation for Fundamental InvestigationsRussian Foundation for Basic Research (RFBR) [20-42-243002]
}
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Synthesis, structure, and properties of EuLnCuSe3 (Ln = Nd, Sm, Gd, Er) / O. V. Andreev, V. V. Atuchin, A. S. Aleksandrovsky [et al.] // Crystals. - 2022. - Vol. 12, Is. 1. - Ст. 17, DOI 10.3390/cryst12010017. - Cited References: 60. - The study was funded by the Ministry of Science and Higher Education of the Russian Ferderation (Projects AAAA-A21-121011390011-4 and AAAA-A19-119031890025-9), as well as the Government of the Tyumen Region (grant to non-profit organizations No. 2. 89-don, dated 7 December 2020) . - ISSN 2073-4352

РУБ Crystallography + Materials Science, Multidisciplinary
Рубрики:
RARE-EARTH
   CRYSTAL-STRUCTURE
   MAGNETIC-PROPERTIES
   CHALCOGENIDES
Кл.слова (ненормированные):
rare earth elements -- complex sulfides -- chalcogenides -- crystal structure -- magnetic properties
Аннотация: EuLnCuSe3 (Ln = Nd, Sm, Gd, Er), due to their complex composition, should be considered new materials with the ability to purposefully change the properties. Samples of the EuLnCuSe3 were prepared using Cu, rare earth metal, Se (99.99%) by the ampoule method. The samples were obtained by the crystallization from a melt and annealed at temperatures 1073 and 1273 K. The EuErCuSe3 crystal structure was established using the single-crystal particle. EuErCuSe3 crystallizes in the orthorhombic system, space group Cmcm, KCuZrS3 structure type, with cell parameters a = 4.0555 (3), b = 13.3570 (9), and c = 10.4602 (7) Å, V = 566.62 (6) Å3. In structure EuErCuSe3, erbium ions are coordinated by selenium ions in the octahedral polyhedron, copper ions are in the tetrahedral coordination, europium ions are between copper and erbium polyhedra layers and are coordinated by selenium ions as two-cap trigonal prisms. The optical band gap is 1.79 eV. At 4.7 K, a transition from the ferrimagnetic state to the paramagnetic state was detected in EuErCuSe3. At 85 and 293 K, the compound is in a paramagnetic state. According to XRPD data, EuLnCuSe3 (Ln = Nd, Sm, Gd) compounds have a Pnma orthorhombic space group of the Eu2CuS3 structure type. For EuSmCuSe3, a = 10.75704 (15) Å, b = 4.11120 (5) Å, c = 13.37778 (22) Å. In the series of EuLnCuSe3 compounds, the optical band gap increases 1.58 eV (Nd), 1.58 eV (Sm), 1.72 eV (Gd), 1.79 eV (Er), the microhardness of the 205 (Nd), 210 (Sm), 225 (Gd) 235 ± 4 HV (Er) phases increases, and the thermal stability of the phases increases significantly. According to the measurement data of differential scanning calorimetry, the EuNdCuSe3 decomposes, according to the solid-phase reaction T = 1296 K, ΔH = 8.2 ± 0.8 kJ/mol. EuSmCuSe3 melts incongruently T = 1449 K, ΔH = 18.8 ± 1.9 kJ/mol. For the EuGdCuSe3, two (Tα↔β = 1494 K, ΔHα↔β = 14.8 kJ/mol, Tβ↔γ = 1530 K, ΔHβ↔γ = 4.8 kJ/mol) and for EuErCuSe3 three polymorphic transitions (Tα↔β = 1561 K, ΔHα↔β = 30.3 kJ/mol, Tβ↔γ = 1579 K, ΔHβ↔γ = 4.4 kJ/mol, and Tγ↔δ = 1600 K, ΔHγ↔δ = 10.1 kJ/mol). The compounds melt incongruently at the temperature of 1588 K, ΔHmelt = 17.9 ± 1.8 kJ/mol and 1664 K, ΔHmelt = 25.6 ± 2.5 kJ/mol, respectively. Incongruent melting of the phases proceeds with the formation of a solid solution of EuSe and a liquid phase.

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Держатели документа:
Univ Tyumen, Inst Chem, Tyumen 625003, Russia.
RAS, Inst Semicond Phys, Lab Opt Mat & Struct, SB, Novosibirsk 630090, Russia.
Kemerovo State Univ, Res & Dev Dept, Kemerovo 650000, Russia.
Novosibirsk State Tech Univ, Dept Ind Machinery Design, Novosibirsk 630073, Russia.
RAS, KSC, Fed Res Ctr, Kirensky Inst Phys,SB, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660036, Russia.
Ind Univ Tyumen, Dept Gen & Special Chem, Tyumen 625000, Russia.
RAS, Boreskov Inst Catalysis, SB, Novosibirsk 630090, Russia.
Novosibirsk State Univ, Lab Mol Design & Ecol Safe Technol, Novosibirsk 630090, Russia.
RAS, Inst Solid State Chem, UB, Ekaterinburg 620990, Russia.

Доп.точки доступа:
Andreev, O. V.; Atuchin, V. V.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Denisenko, Y. G.; Zakharov, B. A.; Tyutyunnik, A. P.; Habibullayev, N. N.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Ulybin, D. A.; Shpindyuk, D. D.; Ministry of Science and Higher Education of the Russian Ferderation [AAAA-A21-121011390011-4, AAAA-A19-119031890025-9]; Government of the Tyumen Region [2. 89-don]
}
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A Challenge toward novel quaternary sulfides SrLnCuS3 (Ln = La, Nd, Tm): Unraveling synthetic pathways, structures and properties / A. V. Ruseikina, M. V. Grigoriev, L. A. Solovyov [et al.] // Int. J. Mol. Sci. - 2022. - Vol. 23, Is. 20. - Ст. 12438, DOI 10.3390/ijms232012438. - Cited References: 62. - The research was funded by the Tyumen Oblast Government, as part of the West-Siberian Interregional Science and Education Center’s project No. 89-DON (3). This work was supported by state assignment of the Ministry of Science and Higher Education of the Russian Federation (Project Reg. No. 720000Φ.99.1.Б385AA13000) . - ISSN 1422-0067
Кл.слова (ненормированные):
inorganic materials -- quaternary sulfide -- synthesis -- crystal structure -- ab initio calculations -- magnetic measurements -- spectroscopy
Аннотация: We report on the novel heterometallic quaternary sulfides SrLnCuS3 (Ln = La, Nd, Tm), obtained as both single crystals and powdered samples. The structures of both the single crystal and powdered samples of SrLaCuS3 and SrNdCuS3 belong to the orthorhombic space group Pnma but are of different structural types, while both samples of SrTmCuS3 crystallize in the orthorhombic space group Cmcm with the structural type KZrCuS3. Three-dimensional crystal structures of SrLaCuS3 and SrNdCuS3 are formed from the (Sr/Ln)S7 capped trigonal prisms and CuS4 tetrahedra. In SrLaCuS3, alternating 2D layers are stacked, while the main backbone of the structure of SrNdCuS3 is a polymeric 3D framework [(Sr/Ln)S7]n, strengthened by 1D polymeric chains (CuS4)n with 1D channels, filled by the other Sr2+/Ln3+ cations, which, in turn, form 1D dimeric ribbons. A 3D crystal structure of SrTmCuS3 is constructed from the SrS6 trigonal prisms, TmS6 octahedra and CuS4 tetrahedra. The latter two polyhedra are packed together into 2D layers, which are separated by 1D chains (SrS6)n and 1D free channels. In both crystal structures of SrLaCuS3 obtained in this work, the crystallographic positions of strontium and lanthanum were partially mixed, while only in the structure of SrNdCuS3, solved from the powder X-ray diffraction data, were the crystallographic positions of strontium and neodymium partially mixed. Band gaps of SrLnCuS3 (Ln = La, Nd, Tm) were found to be 1.86, 1.94 and 2.57 eV, respectively. Both SrNdCuS3 and SrTmCuS3 were found to be paramagnetic at 20-300 K, with the experimental magnetic characteristics being in good agreement with the corresponding calculated parameters.

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Держатели документа:
Laboratory of Theory and Optimization of Chemical and Technological Processes, University of Tyumen, Tyumen, 625003, Russian Federation
Federal Research Center KSC SB RAS, Institute of Chemistry and Chemical Technology, Krasnoyarsk, 660036, Russian Federation
Institute of Natural Sciences and Mathematics, Ural Federal University named after the First President of Russia B.N. Yeltsin, Mira Str. 19, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Department of Photonics and Laser Technology, Siberian Federal University, Krasnoyarsk, 660079, Russian Federation
Institute of Physics and Technology, University of Tyumen, Volodarskogo Str. 6, Tyumen, 625003, Russian Federation
Institute of Inorganic Chemistry, University of Stuttgart, Stuttgart, D-70569, Germany
Scientific and Educational and Innovation Center for Chemical and Pharmaceutical Technologies, Ural Federal University named after the First President of Russia B.N. Yeltsin, Mira Str. 19, Russian Federation
«Advanced Materials for Industry and Biomedicine» Laboratory, Kurgan State University, Sovetskaya Str. 63/4, Kurgan, 640020, Russian Federation
University of Tyumen, Volodarskogo Str. 6, Tyumen, 625003, Russian Federation

Доп.точки доступа:
Ruseikina, A. V.; Grigoriev, M. V.; Solovyov, L. A.; Chernyshev, V. A.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Krylov, A. S.; Крылов, Александр Сергеевич; Krylova, S. N.; Крылова, Светлана Николаевна; Shestakov, N. P.; Шестаков, Николай Петрович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Garmonov, A. A.; Matigorov, A. V.; Eberle, M. A.; Schleid, T.; Safin, D. A.
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Magnetotransport effects and electronic phase separation in manganese sulfides with electron-hole doping / O. B. Romanova, S. S. Aplesnin, M. N. Sitnikov, L. V. Udod // J. Exp. Theor. Phys. - 2021. - Vol. 132, Is. 5. - P. 831-842, DOI 10.1134/S106377612103016X. - Cited References: 38. - This study was supported by the Russian Foundation for Basic Research and the Belarussian Republic Foundation for Basic Research (project no. 20-52-00005) . - ISSN 1063-7761. - ISSN 1090-6509

РУБ Physics, Multidisciplinary
Рубрики:
MAGNETIC-PROPERTIES
TRANSITION
MAGNETORESISTANCE
Аннотация: We analyze the effect of electron and hole doping with a low substituent concentration (x = 0.01) on the magnetic and electron subsystems in disordered semiconductors MexMn1-xS (Me = Ag and Tm) in a wide range of temperatures (77–1000 K) and magnetic fields up to 12 kOe. Using magnetic measurements, we have established the domains of ferron (polaron) formation in the vicinity of the magnetic phase transition. We have detected the magnetoimpedance and magnetoresistance, the magnitude and sign of which depend on the electric field, temperature, and the type of the substituent element. We have determined the temperatures of thermopower peaks associated with deformation of the crystalline structure. We have established the phonon and magnon contributions to charge carrier relaxation using the method of impedance spectroscopy and the Jahn–Teller mode of oscillations from the IR spectra for the system containing silver. We have determined the diffusion contribution to the conductivity from the impedance hodograph in TmxMn1-xS semiconductors. The experimental results are described using the models of supermagnetic clusters, ferroelectric domains, and the Debye model.

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Публикация на русском языке Магнитотранспортные эффекты и электронное фазовое расслоение в сульфидах марганца с электронно-дырочным допированием [Текст] / О. Б. Романова, С. С. Аплеснин, М. Н. Ситников, Л. В. Удод // Журн. эксперим. и теор. физ. - 2021. - Т. 159 Вып. 5. - С. 938-951

Держатели документа:
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.

Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Sitnikov, M. N.; Udod, L. V.; Удод, Любовь Викторовна; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Belarussian Republic Foundation for Basic Research [20-52-00005]
}
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    Synthesis, structure, melting and optical properties of three complex orthorhombic sulfides BaDyCuS3, BaHoCuS3 and BaYbCuS3 / N. O. Azarapin, V. V. Atuchin, N. G. Maximov [et al.] // Mater. Res. Bull. - 2021. - Vol. 140. - Ст. 111314, DOI 10.1016/j.materresbull.2021.111314. - Cited References: 60. - This study was supported by the Russian Science Foundation (19-42-02003). The authors would like to thank Alexey A. Lubin for his studies on SEM. The studies were carried out on the basis of laboratory of electron and probe microscopy in REC ‘Nanotechnologies’. This work was partially supported by the DST-RSF project under the India-Russia Programme of Cooperation in Science and Technology (No. DST/ INT/RUS/RSF/P-20 dated May 16, 2019). Shaibal Mukherjee would like to thank MeitY for the YFRF under the Visvesvaraya Ph.D. Scheme for Electronics and IT. This publication is an outcome of the R&D work undertaken in the project under the Visvesvaraya Ph.D. Scheme of MeitY being implemented by Digital India Corporation (formerly Media Lab Asia). We are grateful to the Krasnoyarsk Regional Center of Research Equipment of the Federal Research Center «Krasnoyarsk Science Center SB RAS» for the provided equipment . - ISSN 0025-5408
   Перевод заглавия: Синтез, строение, плавление и оптические свойства трех сложных орторомбических сульфидов BaDyCuS3, BaHoCuS3 и BaYbCuS3
Кл.слова (ненормированные):
Complex sulfides -- Crystal structure -- SEM -- Raman -- Melting point
Аннотация: Complex sulfides BaDyCuS3, BaHoCuS3 and BaYbCuS3 were synthesized in a flow of sulfiding gases (CS2, H2S) at 900°C from standard solutions of lanthanide and copper nitrates, as well as from the same standard Ba(OH)2 solution. The crystal structures of BaDyCuS3, BaHoCuS3 and BaYbCuS3 were obtained by the Rietveld refinement method. All three compounds crystallize in the Cmcm space group (KZrCuS3 structural type) as predicted by the tolerance factor analysis. Their micromorphological, thermal and spectroscopic properties are evaluated. BaDyCuS3 and BaHoCuS3 melt congruently at 1376.5 °C and 1363.8 °C. BaYbCuS3 melts incongruently at 1353.3 °C. The optical band gap is 2.45 eV for BaDyCuS3, 2.37 eV for BaHoCuS3 and 1.82 eV for BaYbCuS3. The low bandgap of BaYbCuS3 is explained by the charge transfer band of Yb at the bottom of conduction band. The vibrational parameters of BaDyCuS3, BaHoCuS3 and BaYbCuS3 crystals were determined with the use of Raman and Infrared spectroscopies.

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Держатели документа:
Institute of Chemistry, Tyumen State University, Tyumen, 625003, Russian Federation
Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk, 630090, Russian Federation
Research and Development Department, Kemerovo State University, Kemerovo, 650000, Russian Federation
Institute of Chemistry and Chemical Technology, Federal Research Center KSC SB RAS, Krasnoyarsk, 660049, Russian Federation
Laboratory of Coherent Optics, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Nanotechnology, Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation
Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Hybrid Nanodevice Research Group (HNRG), Electrical Engineering and Centre for Advanced Electronics (CAE), Indian Institute of Technology IndoreMadhya Pradesh 453552, India
Laboratory of the Chemistry of Rare Earth Compounds, Institute of Solid State Chemistry, UB RAS, Ekaterinburg, 620137, Russian Federation

Доп.точки доступа:
Azarapin, N. O.; Atuchin, V. V.; Maximov, N. G.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Shestakov, N. P.; Шестаков, Николай Петрович; Krylov, A. S.; Крылов, Александр Сергеевич; Burkhanova, T. M.; Mukherjee, S.; Andreev, O. V.
}
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    Романова, Оксана Борисовна.
    Кинетические эффекты в сульфидах марганца замещенных тулием и иттербием / О. Б. Романова, С. С. Аплеснин, Л. В. Удод // Новое в магнетизме и магнитных материалах : сборник трудов XXIV международной конференции / прогр. ком.: Р. С. Исхаков, С. Г. Овчинников. - 2021. - Секция 7: Кинетические эффекты в магнетиках. - С. 17-20. - Библиогр.: 9. - Исследование выполнено при финансовой поддержке РФФИ и БРФФИ в рамках научного проекта No 20-52-00005
   Перевод заглавия: Kinetic effects in manganese sulfides substituted by thulium and ytterbium
Аннотация: Данная работа посвящена изучению кинетических эффектов в сульфидах марганца допированных элементами с переменной валентностью (Yb и Tm с Х≤0.05) измеренных в диапазоне температур (77-400 K) и магнитных полей до 12 кЭ. Из ВАХ определены механизмы проводимости, для системы Yb0.05Mn0.99S преобладает Пула– Френкеля, а для Tm0.01Mn0.99S описывается законом Ома. Обнаружен эффект магнитосопротивления в этих системах. Наблюдаются аномалии на температурной зависимости термоЭДС.
This work is to the study of kinetic effects in manganese sulfides doped with elements with variable valence (Yb and Tm with X≤0.05) measured in the temperature range (77-400 K) and magnetic fields up to 12 kOe. The conduction mechanisms are determined by I – V characteristics: for the Yb0.05Mn0.99S is Poole – Frenkel, and for Tm0.01Mn0.99S it is described by Ohm's law. The effect of magnetoresistance is found in these systems. Anomalies are observed in the temperature dependence of the thermoEMF.

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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Исхаков, Рауф Садыкович \прогр. ком.\; Iskhakov, R. S.; Овчинников, Сергей Геннадьевич \прогр. ком.\; Ovchinnikov, S. G.; Аплеснин, Сергей Степанович; Aplesnin, S. S.; Удод, Любовь Викторовна; Udod, L. V.; Romanova, O. B.; "Новое в магнетизме и магнитных материалах", международная конференция(24 ; 2021 ; 1-8 июля ; Москва); Научный совет по физике конденсированных сред РАН; МИРЭА - Российский технологический университет; Московский государственный университет им. М.В. Ломоносова; Магнитное общество России
}
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Evolution of structural, thermal, optical, and vibrational properties of Sc2S3, ScCuS2, and BaScCuS3 semiconductors / N. O. Azarapin, A. S. Oreshonkov, I. A. Razumkova [et al.] // Eur. J. Inorg. Chem. - 2021. - Vol. 2021, Is. 33. - P. 3355-3366, DOI 10.1002/ejic.202100292. - Cited References: 50. - The work was partially carried out using the resources of the Research Resource Center "Natural Resources Management and Physico-Chemical Research" (Tyumen University) with financial support from the Ministry of Science and Higher Education of the Russian Federation (contract No. 05.594.21.0019, UIN RFMEFI59420X0019). The Raman spectroscopic studies were carried out at the collaborative research center for vibrational spectroscopy at ISSC UB RAS (Ekaterinburg, Russia). I.I.L. would like to acknowledge the support from the Research Program No. AAAA-A19-119031890025-9 (ISSC UB RAS). The use of the equipment of Krasnoyarsk Regional Center of Research Equipment of the Federal Research Center "Krasnoyarsk Science Center SB RAS" is acknowledged." The authors are grateful to Dr. Elena V. Vladimirova (ISSC UB RAS) for technical assistance . - ISSN 1434-1948. - ISSN 1099-0682

РУБ Chemistry, Inorganic & Nuclear
Рубрики:
RARE-EARTH
QUATERNARY CHALCOGENIDES
CRYSTAL-STRUCTURES
Кл.слова (ненормированные):
Complex sulfides -- Density functional calculations -- DTA -- Polychalcogenides -- Rare earths
Аннотация: In the present work, we report on the synthesis of Sc2S3, ScCuS2 and BaScCuS3 powders using a method based on oxides sulfidation and modification of their properties. The crystal structures and morphology of samples are verified by XRD and SEM techniques. Thermal stability has been studied by DTA which has revealed that Sc2S3 decomposes to ScS through melting at 1877 K. ScCuS2 and BaScCuS3 melt incongruently at temperatures of 1618 K and 1535 K, respectively. The electronic structure calculations show that the investigated compounds are semiconductors with indirect band gap (Eg). According to the diffuse reflection spectroscopy, Sc2S3, ScCuS2 and BaScCuS3 are wide-bandgap semiconductors featured the Eg values of 2.53 eV, 2.05 eV and 2.06 eV, respectively. The band gap decreases with the introduction of copper (I) and barium cations into the crystal structure of the compounds. Variation of local structure has been verified by Raman and infrared spectroscopy. The calculated vibrational modes of ScCuS2 correspond to CuS4 and Sc−S layer vibrations, even though ScS6 octahedra-like structural units can be found in the structure.

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Держатели документа:
Tyumen State Univ, Dept Inorgan & Phys Chem, Tyumen 625003, Russia.
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Lab Mol Spect, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Sch Engn & Construct, Krasnoyarsk 660041, Russia.
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Nanotechnol Spect & Quantum Chem, Krasnoyarsk 660041, Russia.
RAS, Fed Res Ctr KSC SB, Inst Chem & Chem Technol, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Ural Branch, Inst Solid State Chem, Ekaterinburg 620990, Russia.

Доп.точки доступа:
Azarapin, N. O.; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Razumkova, I. A.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Maximov, N. G.; Leonidov, I. I.; Shestakov, N. P.; Шестаков, Николай Петрович; Andreev, O. V.; Ministry of Science and Higher Education of the Russian Federation [05.594.21.0019, UIN RFME-FI59420X0019]; ISSC UB RAS [AAAA-A19-119031890025-9]
}
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10.

    Synthesis, structural and spectroscopic properties of orthorhombic compounds BaLnCuS3 (Ln = Pr, Sm) / N. O. Azarapin [et al.] // J. Alloys Compd. - 2020. - Vol. 832. - Ст. 153134, DOI 10.1016/j.jallcom.2019.153134. - Cited References: 68. - This study was supported by the Russian Science Foundation (19-42-02003). Also, this study was supported by RFBR (18-32-20011, 18-03-00750, in part of Raman analysis). This work was partially supported by DST-RSF project under the India-Russia Programme of Cooperation in Science and Technology (No. DST/INT/RUS/RSF/P-20 dated May 16, 2019). Shaibal Mukherjee would like to thank the Ministry of Electronics and Information Technology (MeitY) for the Young Faculty Research Fellowship (YFRF) under Visvesvaraya Ph.D. Scheme for Electronics and IT. This publication is an outcome of the R&D work undertaken in the project under the Visvesvaraya Ph.D. Scheme of MeitY being implemented by Digital India Corporation (formerly Media Lab Asia). SEM investigations were carried out using the equipment of CKP “Nanostructures”, Novosibirsk, Russia. . - ISSN 0925-8388. - ISSN 1873-4669
   Перевод заглавия: Синтез, структурные и спектроскопические свойства ромбических кристаллов BaLnCuS3 (Ln = Pr, Sm)
Кл.слова (ненормированные):
Complex sulfides -- Crystal structure -- SEM -- Raman
Аннотация: Ternary sulfides BaPrCuS3 and BaSmCuS3 are first synthesized by the sulphidation reaction of a mixture of related oxides and metal Cu in a flow of (CS2, H2S) at 1170 K. The crystal structures of BaPrCuS3 and BaSmCuS3 are obtained by Rietveld method. BaPrCuS3 crystallizes in space group Pnma with unit cell parameters a = 10.56074(6), b = 4.11305(2) and c = 13.42845(7) Å, V = 583.289 (5) Å3, Z = 2 (structure type Eu2CuS3). BaSmCuS3 crystallizes in space group Cmcm with unit cell parameters a = 4.07269(4), b = 13.4499(1) and c = 10.3704(1) Å, V = 568.06 (1) Å3, Z = 2 (structure type KZrCuS3). The structural model is proposed for the Cmcm→Pnma transition in ABCX3 (X = S, Se) compounds for the sequence Sm-Pm-Nd-Pr. The dimensionless tolerance factor t = IR(A) × IR(C)/IR(B)2 is suggested to control the boundary between the Cmcm and Pnma structures. The micromorphological, thermal and spectroscopic properties are evaluated for BaPrCuS3. The compound melts incongruently at Tmelt = 1580.9 K. In BaPrCuS3, the band gap is estimated to be 2.1 eV. The vibrational parameters of BaPrCuS3 and BaSmCuS3 are comparatively observed by Raman spectroscopy.

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Держатели документа:
Institute of Chemistry, Tyumen State University, Tyumen, 625003, Russia
Laboratory of Coherent Optics, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia
Department of Photonics and Laser Technologies, Siberian Federal University, Krasnoyarsk, 660041, Russia
Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk, 630090, Russia
Functional Electronics Laboratory, Tomsk State University, Tomsk, 634050, Russia
Research and Development Department, Kemerovo State University, Kemerovo, 650000, Russia
Laboratory of Nanodiagnostics and Nanolithography, Institute of Semiconductor Physics, SB RAS, Novosibirsk, 630090, Russia
Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia
Laboratory of Crystal Physics, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia
Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russia
Siberian Federal University, Krasnoyarsk, 660079, Russia
Hybrid Nanodevice Research Group (HNRG), Electrical Engineering, Indian Institute of Technology Indore, Madhya Pradesh, 453552, India

Доп.точки доступа:
Azarapin, N. O.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Atuchin, V. V.; Gavrilova, T. A.; Krylov, A. S.; Крылов, Александр Сергеевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Mukherjee, S.; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Andreev, O. V.; Андреев О. В.
}
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