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Peculiarities of the transport and magnetic properties of the cation substituted manganese sulphides / Romanova O.B., Ryabinkina L.I. // Ninth International workshop on Non–Crystalline solids, Porto 2008, p. 60

Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Ryabinkina, L. I.; Рябинкина, Людмила Ивановна
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Luminescence of manganese ions in yttrium aluminium borate / Aleksandrovsky A.S., Gudim I.A., Krylov A.S, Temerov V.E. // 15th International Conference on Luminescence and Optical Spectroscopy of Condensed Matter, Lyon, 2008, p.482

Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Gudim, I. A.; Гудим, Ирина, Анатольевна; Krylov, A. S; Temerov, V. E.
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Aplesnin, S. S.
Regulation of the thermopower and ultrasound by magnetic field in manganese sulfide doped with variable-valence ions / S. Aplesnin, A. Kharkov, M. Sitnikov // Eur. Phys. J. Plus. - 2024. - Vol. 139, Is. 3. - Ст. 247, DOI 10.1140/epjp/s13360-024-05032-2. - Cited References: 50. - The study was supported by a grant from the Russian Science Foundation N 23-22-10016, the Krasnoyarsk Regional Science Foundation. The investigation of microstructural properties of the samples was carried out using equipment’s (SEM and TEM) the Krasnoyarsk Regional Center of Research Equipment of Federal Research Center «Krasnoyarsk Science Center SB RAS». The authors are grateful to A.V. Shabanov for the scanning electron microscopy investigations . - ISSN 2190-5444
Аннотация: The effect of cation nonstoichiometry and variable-valence samarium ions on the thermoelectric and structural characteristics of manganese sulfide is studed. Nonstoichiometry leads to a change in the thermopower sign in the antiferromagnetic region in a magnetic field and a decrease in the thermopower in the paramagnetic region. It is shown that the thermopower and Nernst–Ettingshausen coefficient of samarium-substituted manganese sulfide change their signs in the vicinity of structural and electronic transitions established from the thermal expansion coefficient. A decrease in the sound attenuation in a magnetic field is found. A correlation between the temperatures of the change of the sign of the Nernst–Ettingshausen effect and the change in electrosound in a magnetic field is established and explained within the model of carrier diffusion in the phase transition region. The conductivity control by the ultrasound is demonstrated.

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Держатели документа:
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russia

Доп.точки доступа:
Kharkov, A.; Sitnikov, M.; Аплеснин, Сергей Степанович
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Kondo effects in variable-valence manganese-substituted thulium selenide / O. B. Romanova, S. S. Aplesnin, M. N. Sitnikov [et al.] // Ceram. Int. - 2024, DOI 10.1016/j.ceramint.2024.06.171. - Cited References: 31 . - Article in press. - ISSN 0272-8842. - ISSN 1873-3956
Кл.слова (ненормированные):
Impedance -- Magnetic properties -- Thermopower -- Kondo effect
Аннотация: The MnXTm1‒XSe (0 ≤ Х ≤ 0.2) solid solutions have been first synthesized and their structural, magnetic, and transport properties have been studied in the temperature range of 80–1000 K and magnetic fields of up to 12 kOe. The surface morphology of the samples has been examined and the chemical analysis has been carried out. It is shown that the valence change with the increasing substitution concentration is accompanied by a change in the lattice parameter and a decrease in the magnetic moment of the samples. The Kondo temperatures caused by the manganese and thulium subsystem have been found in the low- and room-temperature regions. The temperature of localization of small-radius polarons has been determined. A drastic decrease in the relaxation time in the range of the manganese ion percolation through the lattice in the MnXTm1‒XSe system has been established. The change of the current carrier type upon variation in the temperature and substitution concentration was determined from the Seebeck coefficient. A high-temperature extremum of thermopower was revealed, which is explained within the framework of the Anderson model.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russia
Scientific-Practical Materials Research Center NAS, Minsk, Belarus

Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Sitnikov, M.N.; Udod, L. V.; Удод, Любовь Викторовна; Shabanov, A. V.; Шабанов, Александр Васильевич; Goncharov, V.S.; Zhivulko, A.M.; Yanushkevich, K.I.
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Near-unity PLQY and high anti-thermal quenching red luminescence from one-dimensional hybrid manganese chloride for efficient and stable white light-emitting diodes / B. Su, M. S. Molokeev, R. Chen, T. Zhang // J. Mater. Chem. C. - 2024, DOI 10.1039/D4TC01477D. - Cited References: 46 . - Article in press. - ISSN 2050-7526. - ISSN 2050-7534
Аннотация: The discovery of novel Mn2+-based metal halides with excellent luminescence properties and thermostability is particularly of great importance for solid-state lighting (SSL). Herein, a novel one-dimensional hybrid manganese chloride (TMA)MnCl3 of a hexagonal system with a P63/m space group is synthesized via a simple saturation crystallization method. Under 443 nm excitation, (TMA)MnCl3 single crystals exhibit a strong broad-band red emission peak at 645 nm originating from the 4T1 → 6A1 transition of Mn2+ ions with a full width at half maximum of 99 nm and a photoluminescence quantum yield (PLQY) of 98.6%. Moreover, (TMA)MnCl3 shows a high anti-thermal quenching behavior, and the integrated PL intensity still retains 100% of the initial intensity measured at 300 °C, caused by the high structural rigidity. Benefiting from its strong blue light excitation, high PLQY, and excellent thermal stability, a stable white light-emitting diode device is fabricated by combining a 465 nm blue LED chip, green-emitting Lu3Al5O12:Ce3+ and the (TMA)MnCl3 red phosphor with a high color rendering index of 94.3% and a correlated color temperature of 3995 K. This work develops a novel hybrid manganese chloride red-emitter and paves a new path to explore high-performance phosphors excited by blue light for SSL.

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Держатели документа:
School of Materials Science and Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi, P. R. China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Department of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk 660041, Russia
Research and Development Department, Kemerovo State University, Kemerovo, Russia

Доп.точки доступа:
Su, B.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Chen, R.; Zhang, T.
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    Two organic-inorganic manganese(II) halide hybrids containing protonated N,N’-dialkylthioureas with efficient green-emission / N. N. Golovnev, M. A. Gerasimova, I. A. Ostapenko [et al.] // J. Mol. Struct. - 2023. - Vol. 1277. - Ст. 134851, DOI 10.1016/j.molstruc.2022.134851. - Cited References: 42. - The reported study was funded by RFBR according to the research project № 19-52-80003. X-ray data from single crystals and powders were obtained with the analytical equipment of Krasnoyarsk Center of collective use of SB RAS . - ISSN 0022-2860
   Перевод заглавия: Два металорганических галогенида марганца(II), содержащие протонированные N,N'-диалкилтиомочевины с эффективным зеленым излучением
Кл.слова (ненормированные):
Zero-dimensional hybrid manganese(II) halides -- N,N′-alkylthioureas -- Synthesis -- Structure -- Photoluminescence -- Quantum yield -- X-ray diffraction
Аннотация: Luminescent (C5H13N2S)2[MnBr4] (1) and (C7H17N2S)2[MnBr4] (2) (C5H12N2S = N,N′-diethylthiourea, C7H16N2S = N,N′-diisopropylthiourea) were prepared via solvothermal method, and the structures of these compounds have been resolved using X-ray single crystal diffraction. The structures consist of electrostatically bound MnBr42− anions and organic C5H13N2S+ and C7H17N2S+ cations. The intermolecular N−H···Br and N−H···S hydrogen bonds additionally stabilize crystal structures of 1-2. Upon excitation over broadband covering the range 265 to 515 nm, these compounds show green emission peaking at 526 nm for 1 and 522 nm for 2, which is assigned to the 4T1→ 6A1 electronic transition of Mn2+ from isolated within the crystal structures MnBr42− tetrahedra. The photoluminescence quantum yield (PLQY) of powder 1 is 97 ± 7% for excitation at 440 nm and that of powder 2 is 83 ± 7% for excitation at 365 nm. The high PLQY indicates the absence of noticeable concentration quenching at shortest Mn···Mn distance of 8.11 and 8.73 Å between Mn2+ ions within the structures of 1 and 2. The high-performance photoluminescence of 0D (C5H13N2S)2[MnBr4] and (C7H17N2S)2[MnBr4] compounds demonstrated promising applications in photonics.

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Держатели документа:
Siberian Federal University, Krasnoyarsk 660041, Russia
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Research and Development Department, Kemerovo State University, Kemerovo, 650000, Russia

Доп.точки доступа:
Golovnev, Nicolay N.; Gerasimova, Marina A.; Ostapenko, Ivan A.; Zolotov, Andrey O.; Molokeev, M. S.; Молокеев, Максим Сергеевич
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Manganese luminescent centers of different valence in yttrium aluminum borate crystals / A. Molchanova, K. Boldyrev, N. Kuzmin [et al.] // Materials. - 2023. - Vol. 16, Is. 2. - Ст. 537, DOI 10.3390/ma16020537. - Cited References: 49. - This work was supported in part by the Russian Science Foundation under Grant No. 21-72-00134. K.B. and M.P. acknowledge financial support from the Ministry of Science and Higher Education of Russia under Grant 0039-2019-0004 . - ISSN 1996-1944
Кл.слова (ненормированные):
manganese -- YAl3(BO3)4:Mn crystal -- XANES spectroscopy -- high-resolution optical spectroscopy -- photoluminescence
Аннотация: We present an extensive study of the luminescence characteristics of Mn impurity ions in a YAl3(BO3)4:Mn crystal, in combination with X-ray fluorescence analysis and determination of the valence state of Mn by XANES (X-ray absorption near-edge structure) spectroscopy. The valences of manganese Mn2+(d5) and Mn3+(d4) were determined by the XANES and high-resolution optical spectroscopy methods shown to be complementary. We observe the R1 and R2 luminescence and absorption lines characteristic of the 2E ↔ 4A2 transitions in d3 ions (such as Mn4+ and Cr3+) and show that they arise due to uncontrolled admixture of Cr3+ ions. A broad luminescent band in the green part of the spectrum is attributed to transitions in Mn2+. Narrow zero-phonon infrared luminescence lines near 1060 nm (9400 cm−1) and 760 nm (13,160 cm−1) are associated with spin-forbidden transitions in Mn3+: 1T2 → 3T1 (between excited triplets) and 1T2 → 5E (to the ground state). Spin-allowed 5T2 → 5E Mn3+ transitions show up as a broad band in the orange region of the spectrum. Using the data of optical spectroscopy and Tanabe–Sugano diagrams we estimated the crystal-field parameter Dq and Racah parameter B for Mn3+ in YAB:Mn as Dq = 1785 cm−1 and B = 800 cm−1. Our work can serve as a basis for further study of YAB:Mn for the purposes of luminescent thermometry, as well as other applications.

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Держатели документа:
Institute of Spectroscopy, Russian Academy of Sciences, Troitsk, 108840 Moscow, Russia
Landau Phystech School of Physics and Research, Moscow Institute of Physics and Technology, 141701 Dolgoprudny, Russia
Faculty of Geology, Lomonosov Moscow State University, 119991 Moscow, Russia
National Research Center “Kurchatov Institute”, 123182 Moscow, Russia
Federal Scientific Research Center “Crystallography and Photonics”, Russian Academy of Sciences, 119333 Moscow, Russia
Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 660036 Krasnoyarsk, Russia
Branch “Aprelevka Department of VNIGNI”, Federal State Budgetary Institution “All-Russian Research Geological Oil Institute”, 143360 Aprelevka, Russia

Доп.точки доступа:
Molchanova, Anastasiia; Boldyrev, Kirill; Kuzmin, Nikolai; Veligzhanin, Alexey; Khaydukov, Kirill; Khaydukov, Evgeniy; Kondratev, Oleg; Gudim, I. A.; Гудим, Ирина Анатольевна; Mikliaeva, Elizaveta; Popova, Marina
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Possible noncollinear magnetism and different valence state of manganese ions in quasi-low-dimensional ludwigites of (Ni,Cu,Mn)3BO5 / S. N. Sofronova, A. Veligzhanin, E. Eremin [et al.] // Phys. Status Solidi B. - 2023. - Vol. 260, Is. 5. - Ст. 2200457, DOI 10.1002/pssb.202200457. - Cited References: 30. - The equipment of Krasnoyarsk Regional Center of Research Equipment of Federal Research Center “Krasnoyarsk Science Center SB RAS” was used for measurements in this research. The authors thank E. Moshkina for providing the samples for the study. - Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activity. Grant Number: 20-42-240011 . - ISSN 0370-1972. - ISSN 1521-3951
Кл.слова (ненормированные):
exchange interactions -- ferrimagnetism -- ludwigites -- noncollinear magnetism
Аннотация: The content of transition-metal ions and their valence state for three compositions of NixCuyMn3−x−yBO5 are estimated by the methods of X-ray absorption spectroscopy. In all the three compositions, the copper content does not exceed 0.25. One of the compositions has manganese ions both in the trivalent and bivalent states according to the K-edge position. The calculations of the total energies of various cation-ordered structures using the software package Wien2K show that copper ions predominately occupy one site, namely, 2(2d). The measurements of the magnetic properties show two types of magnetic transitions in all the three compositions, with one of them being in the range of 60–75 K and the other one at 10 K. Based on the exchange interactions calculated in the framework of the empirical model, magnetic ordering temperatures are estimated for two- and three-sublattice structures and the magnetic transition in the range of 60–75 K is supposed to be connected with magnetic moment ordering in sites 2 and 3.

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Держатели документа:
Kirensky Institute of Physics Federal Research Center KSC SB RAS 660036 Krasnoyarsk, Russia
Kurchatov Specialized Source of Synchrotron Radiation “KISI-Kurchatov” National Research Centre “Kurchatov Institute” 123182 Moscow, Russia

Доп.точки доступа:
Sofronova, S. N.; Софронова, Светлана Николаевна; Veligzhanin, Aleksey; Eremin, E. V.; Еремин, Евгений Владимирович; Chernyshev, A. V.; Чернышов, Артем Валерьевич; Kartashev, A. V.; Карташев, Андрей Васильевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич
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Kinetic effects in thulium manganese selenides / O. B. Romanova, S. S. Aplesnin, L. V. Udod [et al.] // X International scientific conference “Actual problems of solid state physics" : Book of abstracts / int. sci. com. S. S. Aplesnin [et al]. - Minsk, 2023. - Sect.: Functional materials and applications. - P. 154. - Cited References: 1 . - ISBN 978-985-7299-65-2

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS
Reshetnev Siberian State University of Science and Technology
Scientific-Practical Materials Research Center NAS, Minsk

Доп.точки доступа:
Aplesnin, S. S. \int. sci. com.\; Аплеснин, Сергей Степанович; Romanova, O. B.; Романова, Оксана Борисовна; Aplesnin, S. S.; Udod, L. V.; Удод, Любовь Викторовна; Galyas, A. I.; Zhivulko, A. M.; Yanushkevich, K. I.; "Actual problems of solid state physics", International scientific conference(10 ; 2023 ; May 22-26 ; Minsk); "Актуальные проблемы физики твердого тела", международная научная конференция(10 ; 2023 ; 22-26 мая ; Минск); Научно-практический центр по материаловедению НАН Беларуси
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10.

Ferromagnetic silicides and germanides epitaxial films and multilayered hybrid structures: Synthesis, magnetic and transport properties / A. S. Tarasov, A. V. Lukyanenko, I. A. Yakovlev [et al.] // Bull. Russ. Acad. Sci.: Phys. - 2023. - Vol. 87, Suppl. 1. - P. S133-S146, DOI 10.1134/S1062873823704518. - Cited References: 54. - The authors thank the laboratory of Magnetic MAX Materials created under Megagrant project (agreement no. 075-15-2019-1886) for providing experimental equipment and the Collective Use Center at the Krasnoyarsk Scientific Center (Siberian Branch, Russian Academy of Sciences) for assistance. The authors also thank Professor B.A. Belyaev for FMR calculations. - Supported by the Russian Science Foundation, grant no. 23-22-10033, https://rscf.ru/project/23-22-10033/, Krasnoyarsk Regional Fund of Science . - ISSN 1062-8738. - ISSN 1934-9432
Кл.слова (ненормированные):
iron silicide -- manganese germanide -- MBE -- FMR -- electronic transport -- spintronics
Аннотация: Planar and vertical hybrid structures, which combine ferromagnetic and semiconductor layers are essential for implementation and study of spin transport phenomena in semiconductors, which is crucial for the advancement and development of spintronics. We have developed approaches for the synthesis of Fe3 + xSi1 – x epitaxial thin films and demonstrated the spin accumulation effect in multiterminal devices based on Fe3 + xSi1 – x/Si. Fe3 + xSi1 – x/Ge/Fe3Si and Fe3 + xSi1 – x/Ge/Mn5Ge3 multilayer hybrid structures were synthesized on a Si(111) substrate, study of their structural, magnetic and transport properties were performed. The effect of synthesis conditions on the growth of epitaxial structures and on their magnetic and transport properties was discussed. The results obtained may prove valuable in the development and fabrication of spintronic devices.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Scientific Center”, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, 660041, Krasnoyarsk, Russia
Federal Research Center “Krasnoyarsk Scientific Center”, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia

Доп.точки доступа:
Tarasov, A. S.; Тарасов, Антон Сергеевич; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Yakovlev, I. A.; Яковлев, Иван Александрович; Tarasov, I. A.; Тарасов, Иван Анатольевич; Bondarev, I. A.; Бондарев, Илья Александрович; Sukhachev, A. L.; Сухачев, Александр Леонидович; Shanidze, L. V.; Шанидзе, Лев Викторович; Smolyakov, D. A.; Смоляков, Дмитрий Александрович; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Volkov, N. V.; Волков, Никита Валентинович
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