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1.


    Zamkova, N. G.
    2D magnetic MXenes (M11–xM2x)3C2 (M1 = V, Cr; M2 = Mn, Cr): The stability, ordering, and magnetic properties / N. G. Zamkova, V. S. Zhandun // Inorg. Chem. - 2024. - Vol. 63, Is. 51. - P. 24295-24305, DOI 10.1021/acs.inorgchem.4c04064. - Cited References: 32. - The research was supported by the Russian Science Foundation Grant No. 23-22-10020 https://rscf.ru/project/23-22-10020/, Krasnoyarsk Regional Science Foundation. The calculations were performed with the computer resources of "Complex modeling and data processing research installations of mega-class" SRC "Kurchatovsky Institute" (http://ckp.urcki.ru). The authors are grateful to Oksana Draganyuk for her assistance in calculating the phonon spectra . - ISSN 0020-1669. - ISSN 1520-510X
Аннотация: Since their discovery in 2011, the MXene family of two-dimensional (2D) materials has attracted much interest due to its unique properties, leading to practical applications. Recently, special attention has been paid to magnetic MXenes. However, despite the great diversity of the chemical composition of MXenes, which opens up prospects for obtaining magnetic 2D materials, only a few MXenes with intrinsic magnetism have been synthesized to date. The main reason for this is the phase instability of both MXenes and their parent MAX phases. Here, we use the first-principles calculations and the cluster expansion (CE) method to analyze the thermodynamic stability of second-order MXenes (M11–x M2x)3C2 and their parent MAX phases with two transition metals (M1 = V, Cr; M2 = Mn, Cr). Our analysis allows us to identify the most stable MXene structures with possible magnetism. In the stable structures found, the electronic and magnetic properties were calculated. The effect of surface functionalization with fluorine and oxygen on the properties of the MXenes was also studied. It was found that the most promising for synthesis is (V1/3Mn2/3)3C2, which is ferromagnetic with a large magnetic moment per cell, both in bare form and with functionalization of its surface with fluorine.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Professor L.F. Voino-Yasenetsky Krasnoyarsk State Medical University, Krasnoyarsk 660022, Russia

Доп.точки доступа:
Zhandun, V. S.; Жандун, Вячеслав Сергеевич; Замкова, Наталья Геннадьевна
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2.


   
    A novel Mn4+-activated fluoride red phosphor Cs30(Nb2O2F9)9(OH)3·H2O:Mn4+ with good waterproof stability for WLEDs / Y. Chen, F. Liu, Z. Zhang [et al.] // J. Mater. Chem. C. - 2022. - Vol. 10, Is. 18. - P. 7049-7057, DOI 10.1039/d2tc00132b. - Cited References: 56. - This work was financially supported by grants from the National Natural Science Foundation of China (NSFC) (No. 51802359), the Joint Funds of NSFC and Yunnan Province (No. U1702254), and Guangdong Basic and Applied Basic Research Foundation (No. 2020A1515010556) . - ISSN 2050-7534
   Перевод заглавия: Новый Mn4+-активированный фторидный красный люминофор Cs30(Nb2O2F9)9(OH)3ћH2O:Mn4+ с хорошей водонепроницаемостью для WLED
Кл.слова (ненормированные):
Crystal structure -- Fluorine compounds -- Gallium alloys -- III-V semiconductors -- Indium alloys -- Light emission -- Light emitting diodes -- Optical properties -- Phosphors -- Precipitation (chemical) -- Waterproofing
Аннотация: Red-light-emitting materials, as pivotal components of warm white light-emitting diodes (WLEDs), have drawn increasing public focus. Among these, Mn4+-doped red light-emitting fluorides have drawn considerable attention when combined with an InGaN chip; however, they suffer from poor water stability under humid conditions. In this work, a novel fluoride red phosphor, Cs30(Nb2O2F9)9(OH)3·H2O:xMn4+ (CNOFM), with good water resistance was synthesized for the first time using a facile co-precipitation method at ambient temperature. Experiments were implemented for the precise analysis of its crystal structure, optical properties, micro-morphology, thermal behavior, and waterproof properties. 6.66% Mn4+-doped CNOFM maintained a stable crystal structure and possessed strong PL intensity located at 633 nm with high color purity of 96%. CNOFM showed better thermal and waterproof stability compared with the commercial K2SiF6:Mn4+ red phosphor. Without any surface modifications, the PL intensity remained at about 83% of the initial value after immersion in water for 60 min, and the mechanism was investigated. Finally, a warm WLED with a CRI of 92.3 and CCT of 3271 K was fabricated using the CNOFM red phosphor.

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Держатели документа:
MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Sun Yat-Sen University, School of Chemistry/School of Marine Sciences, 510275/Zhuhai, Guangzhou, 519082, China
Laboratory of Crystal Physics, Federal Research Center KSC SB RAS, Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation
Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, 141980, Russian Federation
Institute of Resources Utilization and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou, 510650, China

Доп.точки доступа:
Chen, Y.; Liu, F.; Zhang, Z.; Hong, J.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bobrikov, I. A.; Shi, J.; Zhou, J.; Wu, M.
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3.


   
    A novel red-emitting La2CaHfO6:Mn4+ phosphor based on double perovskite structure for pc-WLEDs lighting / G. C. Xing [et al.] // CrystEngComm. - 2019. - Vol. 21, Is. 23. - P. 3605-3612, DOI 10.1039/c9ce00556k. - Cited References: 47. - This work is financially supported by the National Natural Science Foundation of China (NSFC No. 51672259). . - ISSN 1466-8033
   Перевод заглавия: Новый красный люминофор La2CaHfO6: Mn4+ на основе структуры двойного перовскита для светодиодных ламп pc-WLED
РУБ Chemistry, Multidisciplinary + Crystallography
Рубрики:
LUMINESCENCE PROPERTIES
   ELECTRONIC-STRUCTURE

   OPTICAL-PROPERTIES

   SITE

Аннотация: Non-rare earth doped oxides with red emission are one of the current research hotspots for achieving the warm white light range in the phosphor converted white light emitting diodes (pc-WLEDs) field. In the current work, a novel Mn4+-activated La2CaHfO6 red phosphor is reported for the first time and its crystal structure is analyzed by Rietveld refinement. The photoluminescent properties of La2CaHfO6:Mn4+ are investigated in detail with the help of diffuse refletance spectroscopy, photoluminescence spectroscopy, and temperature-dependent PL spectroscopy. Based on the diffuse refletance spectra, the calculated optical band gap for La2CaHfO6 is 4.9 eV, indicating that La2CaHfO6 could be a suitable host for activators' doping. Under 380 nm near-ultraviolet (n-UV) light excitation, the as-prepared La2CaHfO6:Mn4+ displays intense red emission centered at 693 nm. Through an accurate calculation of Dq/B (2.47) and nephelauxetic effect β1 (0.949), the origination of strong crystal field (CF) and deep-red emission is demonstrated. By combining the representative La2CaHfO6:0.002Mn4+, blue BAM:Eu2+, and green (Ba,Sr)2SiO4:Eu2+ phosphors with a 380 nm UV chip to fabricate the pc-WLEDs device, a white light is obtained with low correlated color temperature (CCT = 5165 K) and high color rendering index (Ra = 87.8), demonstrating that the as-prepared La2CaHfO6:Mn4+ phosphors can be used as red-emitting candidate in pc-WLEDs lighting.

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Держатели документа:
China Univ Geosci, Fac Mat Sci & Chem, Minist Educ, Engn Res Ctr Nanogeomat, 388 Lumo Rd, Wuhan 430074, Hubei, Peoples R China.
FRC KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Xing, Gongcheng; Feng, Yuxin; Gao, Zhiyu; Tao, Mengxuan; Wang, Hongquan; Wei, Y.i.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Li, Guogang
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4.


   
    A way for targeted synthesis of higher manganese silicides: a new Mn17Si30 phase and its distinctive features / I. A. Tarasov [et al.] // Nanostructures: physics and technology : proc. 26th Int. symp. - 2018. - P. 209-210. - Cited References: 3 . - ISBN 978-985-7202-35-5

Материалы конференции

Доп.точки доступа:
Tarasov, I. A.; Тарасов, Иван Анатольевич; Visotin, M. A.; Высотин, Максим Александрович; Solovyov, L. A.; Соловьев, Леонид Александрович; Fedorov, A. S.; Федоров, Александр Семенович; Yakovlev, I. A.; Яковлев, Иван Александрович; Tarasov, A. S.; Тарасов, Антон Сергеевич; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Nanostructures: Physics and Technology, International Symposium(26 ; 2018 ; June ; 18-22 ; Minsk, Belarus); Институт физики им. Б. И. Степанова НАН Беларуси; Санкт-Петербургский национальный исследовательский Академический университет Российской академии наук; Физико-технический институт им. А.Ф. Иоффе РАН; Научно-технологический центр микроэлектроники и субмикронных гетероструктур Российской академии наук
}
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5.


   
    A way for targeted synthesis of higher manganese silicides: a new Mn17Si3O phase and its distinctive features / I. A. Tarasov [et al.] // International school/workshop on actual problems of condensed matter physics : Program. Book of abstracts / ed. S. G. Ovchinnikov. - 2018. - P. 14-15 . - ISBN 978-5-904603-08-3

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Доп.точки доступа:
Ovchinnikov, S. G. \ed.\; Овчинников, Сергей Геннадьевич; Tarasov, I. A.; Тарасов, Иван Анатольевич; Visotin, M. A.; Высотин, Максим Александрович; Kuznetsova, T. V.; Solovyov, L. A.; Соловьев, Леонид Александрович; Fedorov, A. S.; Федоров, Александр Семенович; Yakovlev, I. A.; Яковлев, Иван Александрович; Tarasov, A. S.; Тарасов, Антон Сергеевич; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Federal Research Center KSC SB RAS; Kirensky Institute of Physics; Research Institute of Agriculture and Ecology of the Arctic; Siberian Federal Univercity; International school-workshop on actual problems of condensed matter physics(2018 ; April 12-16 ; Norilsk)
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6.


    Zhandun, V. S.
    Ab initio comparative study of the magnetic, electronic and optical properties of AB2O4 (A, B= Mn, Fe) spinels / V. S. Zhandun, A. V. Nemtsev // Mater. Chem. Phys. - 2021. - Vol. 259. - Ст. 124065, DOI 10.1016/j.matchemphys.2020.124065. - Cited References: 32. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project № 19-42-240016: «Control of structural, magnetic, electronic, and optical properties by pressure and intercalation into functional compounds with a spinel structure containing 3d and 4f ions » The calculations were performed with the computer resources of “Complex modeling and data processing research installations of mega-class” SRC “Kurchatovsky Institute” (http://ckp.urcki.ru) . - ISSN 0254-0584. - ISSN 1879-3312
Кл.слова (ненормированные):
Ab initio calculations -- Spinel -- Magnetic and electronic properties -- Optical properties -- Inverse structure -- Manganese and iron oxides
Аннотация: The comparison of the magnetic, electronic, and optical properties of the spinel transition-metal oxides AB2O4 (A, B = Fe, Mn) and their relationship with the structure and composition were studied within DFT-GGA + U approximation. The spinels were considered both in the normal and inverse structure. We have found that regardless of composition and structure, the studied spinels are ferrimagnetic with antiparallel magnetic moments on A- and B-site cations. Electronic and structural properties of spinels depend on the composition: FeMn2O4 has a tetragonal structure and half-metallic properties; however, in the inverse FeMn2O4, the bandgap opens for the spin-up channel. MnFe2O4 is a cubic insulator with a bandgap of about 1.5 eV, which decreases in the inverse structure. The superexchange constants estimate within the simple indirect coupling model and have values close to the experimental ones. The total magnetization of FeMn2O4 is drop-down to zero under hydrostatic pressure above 60 GPa due to the strong dependence of the magnetic moment of octahedral manganese ion on the pressure. The microscopic mechanisms of the relationship between the structure, composition and properties are studied.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center, Krasnoyarsk Science Centre, Siberian Branch of the Russian Academy of Sciences, 660036, Krasnoyarsk, Russia

Доп.точки доступа:
Nemtsev, A. V.; Немцев, А. В.; Жандун, Вячеслав Сергеевич
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7.


    Zhandun, V. S.
    Ab initio investigation of the magnetic and ferroelectric properties of double perovskites LaPbMeSbO6 (Me = Mn, Fe, Co, Ni) / V. S. Zhandun, V. I. Zinenko // Phys. Solid State. - 2015. - Vol. 57, Is. 5. - P. 983-991, DOI 10.1134/S1063783415050340. - Cited References:19. - This study was supported by the Russian Foundation for Basic Research (project no. 12-02-00025-a) and the Council on Grants from the President of the Russian Federation in Support of the Leading Scientific Schools (grant no. NSh-924-2014.2). Calculations were performed on supercomputers of the National Research Centre "Kurchatov Institute" (Moscow, Russia). . - ISSN 1063. - ISSN 1090-6460. -
РУБ Physics, Condensed Matter

Аннотация: The results of ab initio calculations of the ferroelectric and magnetic properties of the recently synthesized double perovskites LaPbMeSbO6 (Me (2+) = Mn2+, Fe2+, Co2+, Ni2+) have been presented. The ordered double perovskites with a layered ordering of cations A and A' and a checkerboard ordering of cations B and B' have been considered. The calculation of the lattice dynamics has revealed instabilities in the phonon spectra of the high-symmetry phase of these compounds. The condensation of unstable modes leads to a stable polar phase P2(1). The spontaneous polarization in this phase is found to be 30 mu C/cm(2). The magnetic ground state is antiferromagnetic with an antiparallel direction of the magnetic moments in adjacent planes along the [001] direction. The N,el temperatures are estimated in the mean field approximation. The presence of the ferroelectric and magnetic order parameters in the structure suggests that the studied double perovskites with the simultaneous ordering of the cations are potential multiferroics.

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Публикация на русском языке Жандун, Вячеслав Сергеевич. Ab initio исследование магнитных и сегнетоэлектрических свойств двойных перовскитов LaPbMeSbO6 (Me=Mn, Fe, Co, Ni) [Текст] / В. С. Жандун, В. И. Зиненко // Физ. тверд. тела. - 2015. - Т. 57 Вып. 5. - С. 970-977


Доп.точки доступа:
Zinenko, V. I.; Зиненко, Виктор Иванович; Жандун, Вячеслав Сергеевич; Russian Foundation for Basic Research [12-02-00025-a]; Russian Federation [NSh-924-2014.2]
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8.


    Nemtsev, A. V.
    Ab initio study of the polarization, electronic, magnetic, and optical properties of perovskite SrMO3 (M = Fe, Mn) crystals and thin films containing magnetic ions / A. V. Nemtsev, V. S. Zhandun, V. I. Zinenko // J. Exp. Theor. Phys. - 2018. - Vol. 126, Is. 4. - P. 497-505, DOI 10.1134/S1063776118030056. - Cited References: 30 . - ISSN 1063-7761
Кл.слова (ненормированные):
Antiferromagnetism -- Density functional theory -- Electronic properties -- Iron compounds -- Manganese compounds -- Optical properties -- Perovskite -- Perovskite solar cells -- Polarization -- Strontium compounds
Аннотация: The magnetic, electronic, and polarization properties of the SrFeO3 and SrMnO3 compounds with a perovskite structure are calculated using the density functional theory in the bulk and thin-film states. A ferroelectric instability is found to be absent in the bulk state, and the polar mode is softened in the thin-film state of SrMnO3 in the presence of tensile stresses in the substrate. As a result, a polar phase with a polarization of 23 μC/cm2 appears, which agrees with experimental data. The study of the magnetic and electronic properties demonstrates the existence of G-type antiferromagnetic ordering in SrMnO3 and the appearance of a dielectric gap of about 1.5 eV in its thin film. A ferromagnetic phase with metallic conduction in both the bulk and thin-film states is detected in SrFeO3.

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Публикация на русском языке Немцев, Андрей В. Исследования ab initio электронных, магнитных и оптических свойств кристаллов и тонких пленок перовскитов SrMeOs (Me = Fe, Mn), содержащих магнитные ионы [Текст] / А. В. Немцев, В. С. Жандун, В. И. Зиненко // Журн. эксперим. и теор. физ. - 2018. - Т. 153 Вып. 4. - С. 605-614

Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Zhandun, V. S.; Жандун, Вячеслав Сергеевич; Zinenko, V. I.; Зиненко, Виктор Иванович; Немцев, Андрей В.
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9.


    Жандун, Вячеслав Сергеевич.
    Ab initio исследование магнитных и сегнетоэлектрических свойств двойных перовскитов LaPbMeSbO6 (Me=Mn, Fe, Co, Ni) / В. С. Жандун, В. И. Зиненко // Физ. тверд. тела. - 2015. - Т. 57, Вып. 5. - С. 970-977. - Библиогр.: 19. - Работа поддержана грантом РФФИ (N 12-02-00025-a) и грантом Президента РФ " Ведущие научные школы" (НШ-924-2014.2). Расчеты проводились с использованием компьютерных ресурсов Курчатовского института. . - ISSN 0367-3294
Аннотация: Приводятся результаты ab initio расчетов сегнетоэлектрических и магнитных свойств недавно синтезированных двойных перовскитов LaPbMeSbO6 (Me2+ = Mn2+, Fe2+, Co2+, Ni2+). Рассмотрены упорядоченные двойные перовскиты со слоистым упорядочением катионов A и A' и шахматным упорядочением катионов B и B'. Расчет динамики решетки показал наличие нестабильностей в фононных спектрах высокосимметричной фазы данных соединений. Конденсация нестабильных мод приводит к полярной стабильной фазе P21. Значение спонтанной поляризации в этой фазе оказалось равным ~30 muC/cm2. Основное магнитное состояние является антиферромагнитным с антипараллельным направлением магнитных моментов в соседних плоскостях вдоль направления [001]. Температуры Нееля оценивались в приближении среднего поля. Наличие сегнетоэлектрического и магнитного параметров порядка позволяет предположить, что исследованные двойные перовскиты с одновременным упорядочением катионов являются потенциальными мультиферроиками.

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Переводная версия Zhandun V. S. Ab initio investigation of the magnetic and ferroelectric properties of double perovskites LaPbMeSbO6 (Me = Mn, Fe, Co, Ni) [Текст] / V. S. Zhandun, V. I. Zinenko // Phys. Solid State. - 2015. - Vol. 57 Is. 5.- P.983-991

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

Доп.точки доступа:
Зиненко, Виктор Иванович; Zinenko, V. I.; Zhandun, V. S.
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10.


   
    Achieving excellent thermostable red emission in singly Mn2+-doped near zero thermal expansion (NZTE) material Li2Zn3(P2O7)2 / Q. Liu, P. Dang, G. Zhang [et al.] // J. Mater. Chem. C. - 2023. - Vol. 11, Is. 31. - P. 10684-10693, DOI 10.1039/D3TC01683H. - Cited References: 62. - This work wasfinancially supported by the National Science and Technology Major Project (2022YFB3503800), the Projects for Science and Technology Development Plan of Jilin Province (20210402046GH), the National Natural Science Foundation of China (NSFC No. 51932009, 51929201, 52072349, 52172166), the Natural Science Foundation of Zhejiang Province (LR22E020004), the Project funded by China Postdoctoral Science Foundation (2022TQ0365), and the Ministry of Science and High Education of Russian Federation (Project No. FSRZ2023-0006), M.S. Molokeev and S.P. Polyutov acknowledge the support by the Ministry of Science and High Education of Russian Federation (Project No. FSRZ-2023-0006) . - ISSN 2050-7526. - ISSN 2050-7534
   Перевод заглавия: Достижение превосходной термостабильной красной эмиссии в однократно легированном Mn2+ материале с почти нулевым тепловым расширением (NZTE) Li2Zn3(P2O7)2
Аннотация: The design of thermostable phosphor is still a pivotal challenge in pc-WLED applications. Herein, an efficient strategy is proposed to design excellent thermostable red emission in singly Mn2+-doped near zero thermal expansion (NZTE) material Li2Zn3(P2O7)2. Under the excitation of 412 nm wavelength, the emission could be tuned from 636 to 672 nm by increasing the Mn2+ doping level via synthetic effect among crystal field, the exchange coupling interaction in Mn-Mn dimers and energy transfer in different luminescence centers. The PL intensity of LZPO:Mn2+ maintains 97% at 150 °C and 94% at 200 °C of initial intensity at the room temperature. During the heat process, the LZPO presents near zero thermal expansion, which contributes to the nearly unaffected PL intensity. The traps assist energy transfer to luminescent center is also compensated for the emission loss. This work not only offers a perspective idea for elucidating the correlation between crystal structure and optical properties, but also opens a new way in line with that of designing excellent thermostable luminescent materials based on NZTE materials in self-reduction system.

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Держатели документа:
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun 130022, P. R. China
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
Faculty of Materials Science and Chemistry, China University of Geoscience, Wuhan 430074, P. R. China
International Research Center of Spectroscopy and Quantum Chemistry — IRC SQC, Siberian Federal University, Krasnoyarsk, 660041, Russia
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russia
Zhejiang Institute, China University of Geosciences, Hangzhou, 311305, P. R. China

Доп.точки доступа:
Liu, Qin; Dang, Peipei; Zhang, Guodong; Molokeev, M. S.; Молокеев, Максим Сергеевич; Polyutov, Sergey; Lian, Hongzhou; Cheng, Ziyong; Li, Guogang; Lin, Jun
}
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11.


   
    An analysis of the mechanism of Kerr effect enhancement in Mn/Dy/Bi / S. G. Ovchinnikov [et al.] // Phys. Solid State. - 1999. - Vol. 41, Is. 1. - P. 80-86, DOI 10.1134/1.1130733. - Cited References: 35 . - ISSN 1063-7834
РУБ Physics, Condensed Matter
Рубрики:
ELECTRONIC-STRUCTURE
   THIN-FILMS

   MAGNETIC-PROPERTIES

   RARE-EARTH

   MAGNETOOPTICAL PROPERTIES

   MNBI FILMS

   STABILITY

   GD

Аннотация: A study is reported of the structural, magnetic, and magneto-optic properties of Mn/Dy/Bi films obtained by multilayer technology. The maximum Kerr rotation angle in such films is shown to be theta(k) = 2.25 degrees. Possible reasons for such a large Kerr effect enhancement are considered, namely, an increase in the 6p - 3d transition probability caused by symmetry distortion, polarization of the Bi6p band, and a change in the density of states near the Fermi level. The latter reason has been analyzed by simulating the electronic structure of Mn/Dy/Bi through superposition of Dy levels on the MnBi band structure. This approach has revealed possible additional transitions which may be induced by the presence of a Dy buffer and could contribute to the Kerr magneto-optic effect. (C) 1999 American Institute of Physics. [S1063=7834(99)02001-8].

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Публикация на русском языке Анализ механизма увеличения эффекта Керра в Mn/Dy/Bi [Текст] / С. Г. Овчинников [и др.] // Физ. тверд. тела. - 1999. - Т. 41 Вып. 1. - С. 91-97

Держатели документа:
Russian Acad Sci, LV Kirenskii Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Burkova, L. V.; Буркова, Людмила Викторовна; Seredkin, V. A.; Середкин, Виталий Александрович; Yakovchuk, V. Y.
}
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12.


   
    Analysis of the exchange magnetic structure in Pb3Mn7O15 / E. V. Eremin [et al.] // J. Exp. Theor. Phys. - 2017. - Vol. 124, Is. 5. - P. 792-804, DOI 10.1134/S1063776117040112. - Cited References: 16 . - ISSN 1063-7761
Кл.слова (ненормированные):
Crystallography -- Magnetic properties -- Magnetic structure -- Magnetism -- Manganese -- Indirect couplings -- Manganese ions -- Structural and magnetic properties -- Single crystals
Аннотация: The indirect-coupling model is used to analyze the exchange magnetic structure of Pb3Mn7O15 in the hexagonal setting. The ratios of manganese ions Mn4+/Mn3+ in each nonequivalent position are determined. Pb3(Mn0.95Ge0.05)7O15 and Pb3(Mn0.95Ga0.05)7O15 single crystals are grown by the solution–melt method in order to test the validity of the proposed model. The structural and magnetic properties of the single crystals are studied. The magnetic properties of the grown single crystals are compared with those of nominally pure Pb3Mn7O15. © 2017, Pleiades Publishing, Inc.

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Публикация на русском языке Анализ обменной магнитной структуры Pb3Mn7O15 [Текст] / Е. В. Еремин [и др.] // Журн. эксперим. и теор. физ. - 2017. - Т. 151 Вып. 5. - С. 930-943

Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrent’eva 3, Novosibirsk, Russian Federation
Novosibirsk State University, ul. Pirogova 2, Novosibirsk, Russian Federation

Доп.точки доступа:
Eremin, E. V.; Еремин, Евгений Владимирович; Volkov, N. V.; Волков, Никита Валентинович; Sablina, K. A.; Саблина, Клара Александровна; Bayukov, O. A.; Баюков, Олег Артемьевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Komarov, V. Y.
}
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13.


   
    Anomalous hall effect in an epitaxial Mn5Ge3 thin film on Si(111) / M. V. Rautskii, I. A. Yakovlev, S. N. Varnakov, A. S. Tarasov // VIII Euro-Asian symposium "Trends in magnetism" (EASTMAG-2022) : Book of abstracts / program com. S. G. Ovchinnikov [et al.]. - 2022. - Vol. 1, Sect. : Spintronics and magnetic nanostructures. - Ст. A.P34. - P. 163-164. - Cited References: 5. - Support by Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory . - ISBN 978-5-94469-051-7

Материалы симпозиума, ,
Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia

Доп.точки доступа:
Ovchinnikov, S. G. \program com.\; Овчинников, Сергей Геннадьевич; Rautskii, M. V.; Рауцкий, Михаил Владимирович; Yakovlev, I. A.; Яковлев, Иван Александрович; Varnakov, S. N.; Варнаков, Сергей Николаевич; Tarasov, A. S.; Тарасов, Антон Сергеевич; Российская академия наук; Физико-технический институт им. Е.К. Завойского ФИЦ Казанского научного центра РАН; Казанский (Приволжский) федеральный университет; Euro-Asian Symposium "Trends in MAGnetism"(8 ; 2022 ; Aug. ; 22-26 ; Kazan); "Trends in MAGnetism", Euro-Asian Symposium(8 ; 2022 ; Aug. ; 22-26 ; Kazan)
}
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14.


   
    Antiferromagnetism of the cation-ordered warwickite system Mn2-xMgxBO4 (x=0.5, 0.6 and 0.7) / N. V. Kazak, N. A. Belskaya, E. M. Moshkina [et al.] // J. Magn. Magn. Mater. - 2020. - Vol. 507. - Ст. 166820, DOI 10.1016/j.jmmm.2020.166820. - Cited References: 39. - The reported study was funded by the Russian Foundation for Basic Research (no. 20-02-00559), Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project. 18-42243007. . - ISSN 0304-8853. - ISSN 1873-4766
РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
SPIN-GLASS BEHAVIOR
   CRYSTAL-STRUCTURES

   SINGLE-CRYSTALS

   INSIGHTS

   MGFEBO4

Кл.слова (ненормированные):
Warwickites -- Antiferromagnet -- Cation ordering -- Jahn-Teller distortions
Аннотация: X-ray diffraction, heat capacity and magnetic measurements are performed on single crystals of Mn2-xMgxBO4 (x = 0.5, 0.6 and 0.7) with the warwickite structure. The monoclinic symmetry is found for all samples with the space group P21/n. The M1 site is occupied by trivalent Mn ions while the M2 site is occupied by a mixture of divalent Mg and Mn ions. Regular cation and charge distributions are observed, which is unusual for heterometallic warwickites. The local octahedral distortions of M1O6 show the monotonic dependence on the Mg content and are in accordance with the Jahn-Teller distortion. All samples are found to undergo long-range antiferromagnetic ordering with rather low transition temperatures of TN = 16, 14 and 13 K for x = 0.5, 0.6, and 0.7, respectively. The ordering of local octahedral distortions, caused by the strong electron-phonon interaction of the trivalent Mn ions, is proposed to stabilise the cationic ordering and, as a result, the long-range magnetic ordering in the material.

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Держатели документа:
FRC SB RAS, Kirensky Inst Phys, Krasnoyarsk, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
RAS, Zavoisky Phys Tech Inst, FRC Kazan Sci Ctr, Kazan, Russia.
Kazan Volga Reg Fed Univ, Kazan, Russia.

Доп.точки доступа:
Kazak, N. V.; Казак, Наталья Валерьевна; Belskaya, N. A.; Moshkina, E. M.; Мошкина, Евгения Михайловна; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Sofronova, S. N.; Софронова, Светлана Николаевна; Eremina, R. M.; Eremin, E. V.; Еремин, Евгений Владимирович; Muftakhutdinov, A. R.; Cherosov, M. A.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [20-02-00559]; Government of Krasnoyarsk Territory; Krasnoyarsk Regional Fund of Science to the research project [18-42243007]
}
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15.


   
    Apatite oxynitride phosphor (Mg,Y)5Si3(O,N)13:Ce3+,Mn2+: A single-phased host with solar-like and efficient emission / Y. Wu, W. Li, Y. Zheng [et al.] // J. Am. Ceram. Soc. - 2023. - Vol. 106, Is. 5. - P. 2985-2996, DOI 10.1111/jace.18981. - Cited References: 35. - This work was supported by the National Natural Science Foundation of China (Project No. 10804099, 21804119), Key projects of Zhejiang Natural Science Foundation (Project No. LZ18B050002), GDAS’ Project of Science and Technology Development (Nos. 2021GDASYL-20210103069, 2021GDASYL-20210103071) . - ISSN 0002-7820. - ISSN 1551-2916
   Перевод заглавия: Люминофор на основе оксинитрида апатита (Mg,Y)5Si3(O,N)13:Ce3+,Mn2+: однофазная матрица с эффективным излучением почти солнечного спектра
Кл.слова (ненормированные):
apatite oxynitride -- color rendering index -- full-color-emitting phosphor -- quantum efficiency -- thermal stability
Аннотация: During pursuing high color rendering index for full-color-emitting phosphor, low quantum efficiency (QE) is usually accompanying. We intend to elevate the luminescence efficiency when realizing a solar-like spectra distribution, by constructing apatite structure oxynitride, inheriting high covalence and rigidity from oxynitride, and suitable multiple cation sites from oxyapatite compounds. Full-color-emitting apatite structure oxynitride phosphor (Mg,Y)5Si3(O,N)13:Ce3+,Mn2+ has been prepared, and the crystal sites’ occupancies of activators in this host were favorable for white emission. (Mg,Y)5Si3(O,N)13:Ce3+,Mn2+ phosphor shows whole visible light with emission wavelength ranging from 370 to 750 nm, matching the spectra of sunlight quite well. The fabricated white light-emitting diode lamp demonstrated the distinctive overall performance of QE and chromaticity properties (Ra and R9). Furthermore, correlated color temperature is tunable from cool nature to warm white. The obtained lamp possesses the feature of less blue light hazard and high saturation of red degree, compared with the commercial YAG-based lamp.

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Держатели документа:
College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China
Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou, China
Institute of Semiconductors, Guangdong Academy of Sciences, Guangzhou, China
School of Applied Physics and Materials, Wuyi University, Jiangmen, Guangdong, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia

Доп.точки доступа:
Wu, Yanzheng; Li, Weiqiang; Zheng, Yifan; Xu, Yiqin; Wen, Dawei; Molokeev, M. S.; Молокеев, Максим Сергеевич; Pan, Zaifa
}
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16.


    Guan, M.
    Atomic deciphering of cation exchange mechanism in upconversion nanoparticles / M. Guan, M. S. Molokeev, J. Zhou // J. Lumin. - 2020. - Vol. 224. - Ст. 117289, DOI 10.1016/j.jlumin.2020.117289. - Cited References: 36. - The authors acknowledge the Science and Technology Innovation Committee of Shenzhen (Grant No. KQTD20170810110913065), Australian Research Council (ARC) Discovery Early Career Researcher Award Scheme (J. Z., DE 180100669), and the China Scholarship Council (Ming Guan, No. 201506400025) . - ISSN 0022-2313
   Перевод заглавия: Атомная расшифровка катионообменного механизма в наночастицах с апконверсией
Кл.слова (ненормированные):
Mn2+ -- β-NaYF4 nanoparticles -- Cation exchange -- Rietveld refinement
Аннотация: Transition metal ion doping in upconversion nanoparticles (UCNPs) provides an effective way to enhance the luminescence for their wide array of applications. However, the doping sites of transition metal ions have not been comprehensively explored, and commonly assumed that transition metal ions replace the trivalent lanthanides within the lattice. Here we report that cation exchange of transition metal (Mn2+) in β-NaYF4:Yb3+/Er3+ UCNPs occurs through alkaline metal (Na+) replacement, via 2Na+ ↔ Mn2+ + Vacancy reaction. This process distorts the LnF9 polyhedrons and tailors the surrounding environment around the trivalent lanthanides, thereby improving the upconversion intensity from active lanthanides. Further confirmed by core-shell design and spectroscopic study, we prove that the transition–alkaline metal exchange enables both the emission enhancement and transition probability variation of activators.

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Держатели документа:
UTS-SUStech Joint Research Centre for Biomedical Materials & Devices, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 79 Svobodny Ave., Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Molokeev, M. S.; Молокеев, Максим Сергеевич; Zhou, J.
}
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17.


   
    Auger electron spectroscopy of the air-exposed (Cr0.5Mn0.5)2GaC MAX film surface / T. A. Andryushchenko, S. A. Lyashchenko, A. V. Lukyanenko [et al.] // Tech. Phys. Lett. - 2023. - Vol. 49, Is. 7. - P. 59-64, DOI 10.61011/TPL.2023.07.56448.19430. - Cited References: 16. - This study was supported by a grant from the Russian Science Foundation, project № 21-12-00226 (http://rscf.ru/project/21-12-00226/) . - ISSN 1063-7850. - ISSN 1090-6533
Кл.слова (ненормированные):
MAX phases -- Auger electron spectroscopy -- epitaxial films -- ion etching
Аннотация: We have analyzed chemical bonding of atmospheric oxygen with chromium and manganese on the epitaxial MAX-phase (Cr0.5Mn0.5)2GaC surface using Auger electron spectroscopy combined with ion etching. It was found that the system has a specific anisotropic oxidation where oxygen atoms bind to chromium and manganese ones more actively at the faces of layered MAX phase crystallites in contrast to the (0001) basal plane. At the same time, the dominance of the Mn–O chemical bonding over Cr–O is observed on the latter.

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Публикация на русском языке Оже-электронная спектроскопия поверхности MAX-пленок (Cr0.5Mn0.5)2GaC, окисленной в результате хранения на воздухе [Текст] / Т. А. Андрющенко, С. А. Лященко, А. В. Лукьяненко [и др.] // Письма в ЖТФ. - 2023. - Т. 49 Вып. 14. - С. 22-27

Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia
Siberian State University, Krasnoyarsk, Russia

Доп.точки доступа:
Andryushchenko, T. A.; Андрющенко, Татьяна Александровна; Lyashchenko, S. A.; Лященко, Сергей Александрович; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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18.


   
    Auger electron spectroscopy of the Cr-Mn base max-phase surface / T. A. Andryushchenko, S. A. Lyashchenko, S. N. Varnakov [et al.] // VIII Euro-Asian symposium "Trends in magnetism" (EASTMAG-2022) : Book of abstracts / program com. S. G. Ovchinnikov [et al.]. - 2022. - Vol. 2, Sect. O : MAX materials. - Ст. O.P1. - P. 482-483. - Cited References: 4. - Sample synthesis was supported by the government of the Russian Federation (agreement No.075-15-2019-1886). Measurements and analysis of samples were supported by the Russian ScienceFoundation (grant #21-12-00226, http://rscf.ru/project/21-12-00226/) . - ISBN 978-5-94469-051-7
   Перевод заглавия: Оже-электронная спектроскопия поверхности МАХ-фазы на основе Cr-Mn

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Faculty of Physics, University of Duisburg-Essen, Duisburg, Germany

Доп.точки доступа:
Andryushchenko, T. A.; Lyashchenko, S. A.; Лященко, Сергей Александрович; Varnakov, S. N.; Варнаков, Сергей Николаевич; Wiedwald, U.; Farle, M.; Фарле М.; Российская академия наук; Физико-технический институт им. Е.К. Завойского ФИЦ Казанского научного центра РАН; Казанский (Приволжский) федеральный университет; Euro-Asian Symposium "Trends in MAGnetism"(8 ; 2022 ; Aug. ; 22-26 ; Kazan); "Trends in MAGnetism", Euro-Asian Symposium(8 ; 2022 ; Aug. ; 22-26 ; Kazan)
}
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19.


   
    Broad luminescence tuning in Mn2+-doped Rb2Zn3(P2O7)2 via doping level control based on multiple synergies / Q. Liu, P. Dang, G. Zhang [et al.] // CrystEngComm. - 2022. - Vol. 24, Is. 31. - P. 5622-5629, DOI 10.1039/d2ce00719c. - Cited References: 31. - We acknowledge the financial support from the National Natural Science Foundation of China (NSFC No. 51932009, 51720105015, 51929201, 52072349, and 52172166), Projects for the Science and Technology Development Plan of Jilin Province (20210402046GH), and the Natural Science Foundation of Zhejiang Province (LR22E020004) . - ISSN 1466-8033
   Перевод заглавия: Широкая перестройка люминесценции в Rb2Zn3(P2O7)2, легированном Mn2+, посредством управления уровнем легирования на основе множественного синергизма
Кл.слова (ненормированные):
Binary alloys -- Color -- Energy transfer -- High temperature applications -- Light emission -- Solid state reactions -- Centrosymmetric structures -- Crystallographic sites -- Doping levels -- Emission color -- Energy-transfer -- High temperature solid-state reaction -- Luminescence tuning -- Multi band -- Non-centrosymmetric -- Orange-red -- Phosphors
Аннотация: Here we constructed a series of novel non-centrosymmetric structure phosphors [Rb2Zn3(P2O7)2:Mn2+] by a high-temperature solid-state reaction. The multiband emission can be designed by Mn2+ preferentially occupying three types of crystallographic sites in Rb2Zn3(P2O7)2:Mn2+. The emission color could be continuously tuned from yellow-green to orange-red via multiple synergies among crystallographic site engineering, energy transfer, and Mn-Mn dimmers alone through the dopant concentration. These color-tunable phosphors have good thermal stability (I150 °C/I25 °C = 91%). The as-prepared pc-WLED has a low corresponding color temperature (CCT = 4820 K) and a high color rendering index (Ra = 90.4) with CIE color coordinates of (0.351, 0.358). These results show that emission-tunable Rb2Zn3(P2O7)2:xMn2+ phosphors are potential candidates for application in n-UV-based pc-WLED devices. This study offers a new insight for wide-range tuning of PL properties by using crystallographic site engineering through changing the doping level in Mn-activated phosphors.

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Держатели документа:
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Science, Changchun, 130022, China
School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei, 230026, China
Faculty of Materials Science and Chemistry, China University of Geoscience, Wuhan, 430074, China
Zhejiang Institute, China University of Geosciences, Hangzhou, 311305, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Department of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation

Доп.точки доступа:
Liu, Q.; Dang, P.; Zhang, G.; Lian, H.; Li, G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Cheng, Z.; Lin, J.
}
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20.


   
    Buffer layer effect on the structure, morphology, and magnetic properties of Mn5Ge3 films synthesized on Si(111) substrates / M. V. Rautskii, A. V. Lukyanenko, S. V. Komogortsev [et al.] // Phys. Met. Metallogr. - 2024. - Vol. 125, Is. 12. - P. 1331-1340, DOI 10.1134/S0031918X24601975. - Cited References: 63. - The work was supported by the Russian Science Foundation, grant no. 23-22-10033, https://rscf.ru/project/23-22-10033/ and by the Krasnoyarsk Regional Science Foundation . - ISSN 0031-918X. - ISSN 1555-6190
Кл.слова (ненормированные):
manganese germanides -- thin films -- magnetic properties -- transport properties
Аннотация: The effect of the MnxGey buffer layer on the morphology, transport and magnetic properties of Mn5Ge3 thin films grown on substrates Si(111) has been studied. Using X-ray diffraction analysis and atomic force microscopy, it has been found that changing the thickness and structure of the buffer layer with a gradient MnxGey composition has made it possible to control the crystalline quality and smoothness of epitaxial films. Changing the microstructure and surface roughness has not affected the temperature of the phase transitions revealed from the temperature dependences of the resistivity and magnetization at 75 and 300 K. It has been shown that the features of the magnetization curve shape for films with different buffer layers have been closely related to the inhomogeneity of the films in thickness and surface roughness while maintaining the micromagnetic constants and orientation of the easy magnetization axis. The value of the change in the magnetic part of entropy ΔS has been calculated to be 2.1 J kg–1 K–1 at 1 T, which is comparable with the effect in gadolinium and exceeds the effect in Mn5Ge3(001) films grown on GaAs substrates.

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Публикация на русском языке Влияние буферного слоя на структуру, морфологию и магнитные свойства пленок Mn5Ge3, синтезированных на подложках Si(111) [Текст] / М. В. Рауцкий, А. В. Лукьяненко, С. В. Комогорцев [и др.] // Физ. металлов и металловед. - 2024. - Т. 125 № 12. - С. 1501-1511

Держатели документа:
Kirensky Institute of Physics, Federal Research Center "Krasnoyarsk Scientific Center", Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036 Russia
Siberian Federal University, Krasnoyarsk, 660041 Russia
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037 Russia
Institute of Chemistry and Chemical Engineering, Federal Research Center "Krasnoyarsk Scientific Center", Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036 Russia

Доп.точки доступа:
Rautskii, M. V.; Рауцкий, Михаил Владимирович; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Sobolev, I. A.; Соболев, Илларион Александрович; Shanidze, L. V.; Шанидзе, Лев Викторович; Bondarev, I. A.; Бондарев, Илья Александрович; Bondarev, M. A.; Бондарев, Михаил Александрович; Eremin, E. V.; Еремин, Евгений Владимирович; Yakovlev, I. A.; Яковлев, Иван Александрович; Sukhachev, A. L.; Сухачев, Александр Леонидович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Solovjov, L. A.; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Volkov, N. V.; Волков, Никита Валентинович; Tarasov, A. S.; Тарасов, Антон Сергеевич
}
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