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    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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    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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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

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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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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. - Norilsk, 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
}
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    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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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. - С.-Петербург, 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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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. : Наука, 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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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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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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10.

    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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11.

Aplesnin, S. S.
Gigantic magnetocapacitive effect into Yb[[d]]x[[/d]]Mn[[d]]1-x[[/d]]S / S. S. Aplesnin, A. A. Khar'kov, V. V. Sokolov // V Euro-Asian simposium "Trend in MAGnetism": Nanomagnetism : abstracts. - Vladivostok : FEFU, 2013. - P33 . - ISBN 978-5-7444-3124-2

Доп.точки доступа:
Khar'kov, A. A.; Харьков, А.А.; Sokolov, V. V.; Аплеснин, Сергей Степанович; Euro-Asian Symposium "Trends in MAGnetism": Nanomagnetism(5 ; 2013 ; Sept. ; 15-21 ; Vladivostok)
}
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12.

Aplesnin, S. S.
Magnetoelectric Effect in a Paramagnetic Region in Gd0.15Mn0.85Se / S. S. Aplesnin, V. V. Kretinin, O. B. Begisheva // Phys. Solid State. - 2019. - Vol. 61, Is. 8. - P. 1379-1382, DOI 10.1134/S1063783419080067. - Cited References: 16. - This work was supported by the Russian foundation for Basic Research, the Government of the Krasnoyarsk region, and Krasnoyarsk Regional Foundation for Science in the framework of the scientific project no. 18-42-240001 "Inversion of the sign of components of the magnetoelectric tensor in temperature in neodymium-substituted bismuth ferrite-garnet films," grant MK 591.2019.2, and state task no. 3.5743.2017/6.7. . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter
Рубрики:
MULTIFERROICS
Кл.слова (ненормированные):
magnetoelectric effect -- migration polarization -- hysteresis -- polarization
Аннотация: The electric polarization in a zero magnetic field and in a magnetic field of 12 kOe is measured in a GdxMn1 – xSe solid solution in the percolation concentration region in the temperature range 80–380 K. For composition x = 0.15, the polarization hysteresis and the dependence of the remanent polarization on magnetic field and temperature are determined. The hysteresis is explained in the model of migration polarization and the magnetoelectric effect is explained in the Maxwell–Wagner model.

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Публикация на русском языке Аплеснин, Сергей Степанович. Магнитоэлектрический эффект в парамагнитной области в Gd0.15Mn0.85Sе [Текст] / С. С. Аплеснин, В. В. Кретинин, О. Б. Бегишева // Физ. тверд. тела. - 2019. - Т. 61 Вып. 8. - С. 1433-1436

Держатели документа:
KSC SB RAS, Independent Subdiv Fed Ctr, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660000, Russia.

Доп.точки доступа:
Kretinin, V. V.; Begisheva, O. B.; Аплеснин, Сергей Степанович; Russian foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of the Krasnoyarsk region; Krasnoyarsk Regional Foundation for Science [18-42-240001, MK 591.2019.2, 3.5743.2017/6.7]
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13.

Aplesnin, S. S.
Simulation of the magnetic properties of manganese oxide Pb3Mn7O15 / S. S. Aplesnin, A. I. Moskvin // Phys. Solid State. - 2009. - Vol. 51, Is. 4. - P. 767-769, DOI 10.1134/S1063783409040209. - Cited References: 7 . - ISSN 1063-7834

РУБ Physics, Condensed Matter

Аннотация: The magnetic susceptibility, heat capacity, and spin-spin correlation functions of manganese oxide Pb3Mn7O15 are calculated by the Monte Carlo method. Two critical temperatures are determined: T (1) a parts per thousand 20 K, above which a modulated structure along the hexagonal axis is formed, and T (2) a parts per thousand 70 K, at which the long-range magnetic order disappears. The antiferromagnetic exchange interaction constant in a hexagonal plane is estimated to be J (1) similar to 7 K, and the antiferromagnetic and ferromagnetic exchange interaction constants between hexagonal planes are calculated to be J (2) similar to 3 K and K similar to 50 K, respectively.

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Держатели документа:
[Aplesnin, S. S.
Moskvin, A. I.] Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
[Aplesnin, S. S.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Reshetnev Siberian State Aerospace University, Krasnoyarsk 660014, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Moskvin, A. I.; Аплеснин, Сергей Степанович
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14.

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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15.

    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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16.

Boldyrev, K. N.
The electronic and magnetic structures of manganese doped copper metaborate Cu0.98Mn0.02B2O4 / K. N. Boldyrev, A. D. Molchanova, E. M. Moshkina // Moscow International Symposium on Magnetism (MISM-2017) : 1-7 July 2017 : book of abstracts. - 2017. - Ст. 4OR-O-11. - P. 752

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Доп.точки доступа:
Molchanova, A. D.; Moshkina, E. M.; Мошкина, Евгения Михайловна; Болдырев, Кирилл Николаевич; Moscow International Symposium on Magnetism(7 ; 2017 ; Jul. ; Moscow); Московский государственный университет им. М.В. Ломоносова; Российский фонд фундаментальных исследований
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17.

    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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18.

    Cation substitution dependent bimodal photoluminescence in whitlockite structural Ca3-xSrx(PO4)2:Eu2+ (0 ≤ x ≤ 2) solid solution phosphors / H. P. Ji [et al.] // Inorg. Chem. - 2014. - Vol. 53, Is. 20. - P. 11119-11124, DOI 10.1021/ic501679f. - Cited References: 37. - This work was supported by the National Natural Science Foundations of China (Grant Nos. 51032007, 51002146, 51272242), the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20130022110006), the Natural Science Foundations of Beijing (2132050), the Program for New Century Excellent Talents in University of Ministry of Education of China (NCET-12-0950), Beijing Nova Program (Z131103000413047), and Beijing Youth Excellent Talent Program (YETP0635). V.V.A. acknowledges the Ministry of Education and Science of the Russian Federation for financial support. . - ISSN 0020-1669. - ISSN 1520-510X
   Перевод заглавия: Катион зависимая бимодальная люминесценция в твердом растворе Ca3-xSrx(PO4)2:Eu2+ (0 ˂ x ˂ 2) со структурой витлокита

РУБ Chemistry, Inorganic & Nuclear
Рубрики:
LIGHT-EMITTING-DIODES
   EFFICIENT ENERGY-TRANSFER
   EMISSION-TUNABLE PHOSPHOR
   EXCITED WHITE LEDS
   CRYSTAL-STRUCTURE
   LUMINESCENCE PROPERTIES
   Mn2+ PHOSPHOR
   COLOR TONE
   PHASE
   Eu2+
Аннотация: Cation substitution dependent tunable bimodal photoluminescence behavior was observed in the Ca3-xSrx(PO4)2:Eu2+ (0 ≤ x ≤ 2) solid solution phosphors. The Rietveld refinements verified the phase purity and whitlockite type crystal structure of the solid solutions. The tunable photoluminescence evolution was studied as a function of strontium content, over the composition range 0.1 ≤ x ≤ 2. In addition to the emission band peak at 416 nm in Ca3(PO4)2:Eu2+, the substitution of Ca2+ by Sr2+ induced the emerging broad-band peak at 493-532 nm. A dramatic red shift of the emission peak located in the green-yellow region was observed on an increase of x in the samples with 0.75 ≤ x ≤ 2.00. The two emission bands could be related to the EuOn-Ca9 and EuOn-Ca9-xSrx emitting blocks, respectively. The values for the two kinds of emitting blocks in the solid solutions can be fitted well with the observed intensity evolution of the two emission peaks.

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Держатели документа:
China Univ Geosci, Sch Mat Sci & Technol, Beijing 100083, Peoples R China
Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
SB RAS, LV Kirensky Phys Inst, Lab Crystal Phys, Krasnoyarsk 660036, Russia
SB RAS, Inst Semicond Phys, Lab Opt Mat & Struct, Novosibirsk 630090, Russia
Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia
Novosibirsk State Univ, Lab Semicond & Dielect Mat, Novosibirsk 630090, Russia
Univ Auckland, Dept Chem & Mat Engn, Auckland 1142, New Zealand

Доп.точки доступа:
Ji, H. P.; Huang, Z. H.; Xia, Zhiguo; Molokeev, M. S.; Молокеев, Максим Сергеевич; Atuchin, V. V.; Атучин, Виктор Валерьевич; Huang, S. F.
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19.

CaY2Al4SiO12:Ce3+,Mn2+: a single component phosphor to produce high color rendering index WLEDs with a blue chip / Q. H. Zhang, J. H. Li, W. Jiang [et al.] // J. Mater. Chem. C. - 2021. - Vol. 9, Is. 34. - P. 11292-11298, DOI 10.1039/d1tc01770e. - Cited References: 35. - This work has been financially supported by the National Nature Science Foundation of China (51902063, 51902354, U1801253), the Science and Technology Project of Guangdong Province (2018A050506061), the Science and Technology Project of Guangzhou City (202007020005, 202007020008) and GDAS' Project of Science and Technology Development (2020GDASYL-20200302010, 2018GDASCX-0110). M. G. Brik also thanks the support from the Chongqing Recruitment Program for 100 Overseas Innovative Talents (Grant No. 2015013), the Program for the Foreign Experts (Grant No. W2017011) and Wenfeng High-End Talents Project (Grant No. W2016-01) offered by Chongqing University of Posts and Telecommunications (CQUPT), Estonian Research Council grant PUT PRG111, European Regional Development Fund (TK141) and NCN project 2018/31/B/ST4/00924 . - ISSN 2050-7526. - ISSN 2050-7534

РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
GARNET PHOSPHOR
   ENERGY-TRANSFER
   RED EMISSION
   LUMINESCENCE PROPERTIES
Аннотация: A high color rendering index white light emitting diode (WLED) is generally produced by combining yellow and red mixed phosphors on a blue chip. Herein we report a single component phosphor based on CaY2Al4SiO12 (CYAS) to achieve warm white light emission with a high color rendering index (Ra), which can be up to 90.5. Ce3+, Mn2+ singly doped and co-doped CYAS phosphors have been synthesized by solid state reactions, respectively, for comparative investigations. The Rietveld X-ray diffraction (XRD) refinements show that the CYAS host crystallizes in a cubic structure with the Ia[3 with combining macron]d space group. The valence states of Ce and Mn inside the CYAS host have been confirmed by XPS and EPR. Ce3+ occupies the Ca2+/Y3+ site and generates a yellow emission band around 543 nm from its characteristic 5d–4f transition. Mn2+ occupies both the dodecahedron Ca2+/Y3+ and octahedral Al3+ sites, emitting red and deep red lights at 616 nm and 750 nm, respectively. These two emission bands are attributed to the 4T1(4G)–6A1(6S) transitions of Mn2+. Upon 460 nm light excitation, both the Ce3+ and Mn2+ characteristic emissions can be obtained, in which the emissions of Mn2+ result from the occurrence of energy transfer from Ce3+ in CYAS. All the results indicate that the prepared CYAS:Ce3+,Mn2+ could be a promising single component phosphor for blue chip WLEDs.

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Держатели документа:
Guangdong Acad Sci, Inst Rare Met, Guangdong Prov Key Lab Rare Earth Dev & Applicat, Guangzhou 510651, Peoples R China.
Chongqing Univ Posts & Telecommun, Coll Sci, Chongqing 400065, Peoples R China.
Chongqing Univ Posts & Telecommun, CQUPT BUL Innovat Inst, Chongqing 400065, Peoples R China.
Univ Tartu, Inst Phys, W Ostwald Str 1, EE-50411 Tartu, Estonia.
Jan Dlugosz Univ, Fac Sci & Technol, Armii Krajowej 13-15, PL-42200 Czestochowa, Poland.
RAS, Fed Res Ctr, KSC SB, Kirensky Inst Phys,Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
Sun Yat Sen Univ, Sch Marine Sci, Zhuhai 510275, Peoples R China.

Доп.точки доступа:
Zhang, Qiuhong; Li, Junhao; Jiang, Wei; Lin, Litian; Ding, Jianhong; Brik, Mikhail G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Ni, Haiyong; Wu, Mingmei
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20.

Charge ordering in Mn2BO4: XRD and XANES studies / N. V. Kazak [et al.] // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. I10.6. - P. 432. - References: 3. - This work has been financed by the Council for Grants of the President of the Russian Federation (SP-938.2015.5), the RFBR (№ 16-32-60049 mol_a_dk, № 16-32-00206 mol_a), SB RAS program № II.2P contract 0358-2015-0005 and by «UMNIK» program. . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
charge ordering -- x-ray spectroscopy -- x-ray diffraction -- phase transitions

Доп.точки доступа:
Kazak, N. V.; Казак, Наталья Валерьевна; Platunov, M. S.; Платунов, Михаил Сергеевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Veligzhanin, A. A.; Велигжанин А. А.; Zubavichus, Y. V.; Зубавичус Я. В.; Trigub, A.; Тригуб А.; Solovyov, L. A.; Соловьев, Леонид Александрович; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН

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