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    Implanted gallium impurity detection in silicon by impedance spectroscopy / D. Tetelbaum, A. Nikolskaya, M. Dorokhin [et al.] // Mater. Lett. - 2022. - Vol. 308, Part B. - Ст. 131244, DOI 10.1016/j.matlet.2021.131244. - Cited References: 11. - This study was supported by the Russian Foundation for Basic Research (grant No. 20-42-243007), Ministry of Science and Higher Education of the Russian Federation (project No. 075-03-2020-191/5), as well as the Government of the Russian Federation within the framework of the Megagrant for the creation of world-class laboratories (No. 075-15-2019-1886) . - ISSN 0167-577X
   Перевод заглавия: Обнаружение имплантированной примеси галлия в кремнии методом импедансной спектроскопии
Кл.слова (ненормированные):
Silicon -- Ion implantation -- Impedance spectroscopy -- Energy levels -- Ion channeling
Аннотация: The results of determining the energy levels of boron-doped silicon implanted with gallium ions by impedance spectroscopy are reported. In the as-implanted sample the boron level remains the same and a second level appears close to the Ga-level reported in literature. In the sample annealed at 1000 °C, two levels are observed neither of which corresponds to the literature values for boron and gallium. It is assumed that in the as-implanted sample this method detects levels of gallium atoms located at a depth where ions penetrate due to the channeling effect, since a large concentration of defects at shallower depths does not allow detection of energy levels due to the Fermi level pinning. Explaining the results for the sample annealed after implantation requires additional research. The main result of this work is to establish the possibility of detecting impurity levels in ion-implanted silicon by impedance spectroscopy even in the absence of subsequent annealing.

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Держатели документа:
Research Institute of Physics and Technology, Lobachevsky University, 23/3 Gagarina Avenue, Nizhny Novgorod, 603022, Russian Federation
Kirensky Institute of Physics, 50 st. Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, 79 Svobodny pr., Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Tetelbaum, D.; Nikolskaya, A.; Dorokhin, M.; Vasiliev, V.; Smolyakov, D. A.; Смоляков, Дмитрий Александрович; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Baron, F. A.; Барон, Филипп Алексеевич; Tarasov, A. S.; Тарасов, Антон Сергеевич
}
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Influence of partial substitution of iron by gallium on optical properties of GdFe3(bo3)4 [Text] / Malakhovskii A.V.Sukhachev A.L.Vasil’ev A.D. [et al.] // Физика диэлектриков (Диэлектрики-2011) : материалы XII Междунарю конф. - СПб. : Изд-во Российского гос. пед. ун-та им. А. И. Герцена, 2011. - Т. 1. - P171-174

Доп.точки доступа:
Malakhovskii, A.V.; Sukhachev, A.L.; Vasil’ev, A.D.; Leont’ev, A.A.; Kartashev, A.V.; Temerov, V.L.; Gudim, I.A.; "Физика диэлектриков", международная конференция(12 ; 2011 ; май ; 23-26 ; Санкт-Петербург)
}
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Research of features magnetic permeability and domain structures in Fe 2O3:GA crystals near the morin transition / A. V. Chzhan [et al.] // Solid State Phenomena. - 2009. - Vol. 152-153. - P29-32, DOI 10.4028/www.scientific.net/SSP.152-153.29 . - ISSN 1012-0394
Кл.слова (ненормированные):
Antiferromagnetic -- Domain structure -- Hematite -- Morin transition -- Weakly ferromagnetic -- Antiferromagnetic materials -- Antiferromagnetism -- Capillarity -- Crystal impurities -- Crystals -- Ferromagnetic materials -- Ferromagnetic resonance -- Ferromagnetism -- Gallium -- Hematite -- Iron ores -- Magnetic permeability -- Oxide minerals -- Permanent magnets -- Antiferromagnetism -- Crystal impurities -- Ferromagnetic materials -- Ferromagnetism -- Gallium -- Hematite -- Iron compounds -- Magnetic materials -- Magnetic permeability -- Magnetism -- AFM -- Antiferromagnetic -- Antiferromagnetic domains -- Antiferromagnetics -- Basal planes -- Domain configurations -- Domain structure -- Morin transitions -- Multi-layered structure -- Weakly ferromagnetic -- Magnetic domains -- Magnetic domains
Аннотация: Specially picked up web-chamber is used for visualization of domain structure in hematite. An analysis of domain configuration shows, that domain structure of hematite in a basal plane represents multilayered structure which contains domains both in paralleled thickness and in the parallel basal planes. The temperature features of magnetic permeability and domain structures in Fe2O3:Ga crystals near the Morin transition are investigated. Observable changes of magnetic permeability and changes in domain structure confirm that transition from AFM to WFM occurs in the hematite with Ga impurity as transition of the first sort. Results of research of antiferromagnetic and weakly ferromagnetic resonances (AFMR and WFMR) in these compounds are presented.

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Держатели документа:
Kirenskii Institute of Physics, Siberian Branch of RAS, Institute of Physics, Krasnoyarsk 660036Academgorodok, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Chzhan, A.V.; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Isaeva, T. N.; Patrin, G. S.; Патрин, Геннадий Семёнович; Moscow International Symposium on Magnetism(4 ; 2008 ; Jun. ; Moscow)
}
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Crystal structure and thermodynamic properties of titanate ErGaTi2O7 / L. T. Denisova, M. S. Molokeev, V. V. Ryabov [et al.] // Russ. J. Inorg. Chem. - 2021. - Vol. 66, Is. 4. - P. 532-537, DOI 10.1134/S0036023621040082. - Cited References: 29 . - ISSN 0036-0236
Кл.слова (ненормированные):
erbium gallium titanate -- solid-state synthesis -- crystal structure -- high-temperature heat capacity -- thermodynamic functions
Аннотация: Erbium gallium titanate was prepared by solid-phase synthesis via the sequential calcination of precursor oxides in an air atmosphere at 1273 and 1573 K. The crystal structure of ErGaTi2O7 was characterized by full-profile analysis for the X-ray diffraction pattern of the synthesized powder sample as follows: space group Pcnb, a = 9.77326(15) Å, b = 13.5170(2) Å, c = 7.33189(11) Å, V = 918.58(3) Å3, ρ = 6.10 g/cm3. The high-temperature heat capacity of erbium gallium titanate was measured by differential scanning calorimetry within a temperature range of 320–1000 K. Based on these data, the basic thermodynamic functions of ErGaTi2O7 were calculated.

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Публикация на русском языке Кристаллическая структура и термодинамические свойства титаната ErGaTi2O7 [Текст] / Л. Т. Денисова, М. С. Молокеев, В. В. Рябов [и др.] // Журн. неорг. химии. - 2021. - Т. 66 № 4. - С. 492-497

Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirenskii Institute of Physics, Federal Research Center “Krasnoyarsk Scientific Center”, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Institute of Metallurgy, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620016, Russian Federation
Baikov Institute of Metallurgy and Material Science, Russian Academy of Sciences, Moscow, 119991, Russian Federation

Доп.точки доступа:
Denisova, L. T.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Ryabov, V. V.; Kargin, Y. F.; Chumilina, L. G.; Denisov, V. M.
}
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Synthesis, Crystal Structure and Thermodynamic Properties of LuGaTi2O7 / L. T. Denisova, M. S. Molokeev, L. G. Chumilina [et al.] // Inorg. Mater. - 2020. - Vol. 56, Is. 12. - P. 1242-1247, DOI 10.1134/S0020168520120055. - Cited References: 25 . - ISSN 0020-1685
Кл.слова (ненормированные):
lutetium gallium titanate -- mixed oxide compounds -- high-temperature heat capacity -- thermodynamic properties
Аннотация: Single-phase LuGaTi2O7 samples have been prepared by solid-state reaction in a starting mixture of Lu2O3, Ga2O3, and TiO2 via sequential firing in air at temperatures of 1273 and 1573 K. The crystal structure of the lutetium gallium dititanate has been determined by the Rietveld method (profile analysis of X-ray diffraction patterns of polycrystalline powders): sp. gr. Pcnb; a = 9.75033(13) Å, b = 13.41425(17) Å, c = 7.29215(9) Å, V = 957.32(2) Å3, d = 6.28 g/cm3. The heat capacity of LuGaTi2O7 has been determined as a function of temperature by differential scanning calorimetry in the range 320–1000 K. The Cp(T) data thus obtained have been used to calculate the principal thermodynamic functions of the oxide compound.

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Публикация на русском языке Синтез, кристаллическая структура и термодинамические свойства LuGaTi2O7 [Текст] / Л. Т. Денисова, М. С. Молокеев, Л. Г. Чумилина [и др.] // Неорган. матер. - 2020. - Т. 56 № 12. - С. 1311-1316

Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Scientific Center (Federal Research Center), Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, 119991, Russian Federation
Institute of Metallurgy, Ural Branch, Russian Academy of Sciences, Yekaterinburg, 620016, Russian Federation

Доп.точки доступа:
Denisova, L. T.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Chumilina, L. G.; Kargin, Y. F.; Denisov, V. M.; Ryabov, V. V.
}
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Coexistence of the electric polarization and conductive current in the bismuth–neodymium ferrite garnet films / S. S. Aplesnin, A. N. Masyugin, M. N. Volochaev, T. Ishibashi // J. Mater. Sci. Mater. Electron. - 2021. - Vol. 32. - P. 3766-3781, DOI 10.1007/s10854-020-05121-9. - Cited References: 42 . - ISSN 0957-4522
Кл.слова (ненормированные):
Bismuth -- Bismuth compounds -- Dielectric materials -- Epitaxial films -- Ferroelectricity -- Gallium compounds -- Garnets -- Hysteresis -- Iron compounds -- Neodymium -- Neodymium compounds -- Piezoelectricity -- Single crystals -- Substrates
Аннотация: The Nd1Bi2Fe5O12/Nd2Bi1Fe4Ga1O12 polycrystalline films on the glass substrate and the Nd0.5Bi2.5Fe5O12 epitaxial films on the single-crystal gadolinium gallium garnet substrate have been investigated by impedance and dielectric spectroscopy. The inductive contribution to the impedance and two relaxation channels related to ferroelectric domains and migration polarization have been established. The magnetocapacitance and magnetoimpedance have been determined. The conductive and polarization currents and the phase difference between them for the films of two types have been determined. The critical temperatures of the polarization disappearance and hysteresis I–V have been found. A model of the polarization caused by the piezoelectric effect and flexoelectric interaction has been proposed. I–V hysteresis is explained by the presence of ferroelectric domains near the interface and is associated with the hysteresis of the electric polarization.

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Держатели документа:
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Department of Materials Science and Technology, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan

Доп.точки доступа:
Aplesnin, S. S.; Masyugin, A. N.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Ishibashi, T.
}
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    Destruction of long-range magnetic order in an external magnetic field and the associated spin dynamics in Cu2GaBO5 and Cu2AlBO5 ludwigites / A. A. Kulbakov, R. Sarkar, O. Janson [et al.] // Phys. Rev. B. - 2021. - Vol. 103, Is. 2. - Ст. 024447, DOI 10.1103/PhysRevB.103.024447. - Cited References: 46. - We thank U. Nitzsche for technical assistance. This project was funded in part by the German Research Foundation (DFG) under Grant IN 209/9-1, via Project C03 of the Collaborative Research Center SFB 1143 (project-id 247310070) at the TU Dresden, and the Würzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter—ct.qmat (EXC 2147, project-id 390858490). O.J. was supported by the Leibniz Association through the Leibniz Competition . - ISSN 2469-9950
   Перевод заглавия: Разрушение дальнего магнитного порядка во внешнем магнитном поле и связанная с ним спиновая динамика в людвигитах Cu2GaBO5 и Cu2AlBO5
Кл.слова (ненормированные):
Aluminum compounds -- Antiferromagnetic materials -- Antiferromagnetism -- Band structure -- Copper compounds -- Crystal structure -- Density functional theory -- Gallium compounds -- Magnetic fields -- Neutron diffraction -- Neutron scattering -- Spin fluctuations -- Spin glass -- Temperature -- Antiferromagnetic exchange -- Antiferromagnetic orderings -- Brillouin zone boundary -- External magnetic field -- Long range magnetic order -- Long-range-ordered state -- Quantum spin systems -- Two-dimensional spin model -- Boron compounds
Аннотация: The quantum spin systems Cu2M′BO5 (M′=Al,Ga) with the ludwigite crystal structure consist of a structurally ordered Cu2+ sublattice in the form of three-leg ladders, interpenetrated by a structurally disordered sublattice with a statistically random site occupation by magnetic Cu2+ and nonmagnetic Ga3+ or Al3+ ions. A microscopic analysis based on density-functional-theory calculations for Cu2GaBO5 reveals a frustrated quasi-two-dimensional spin model featuring five inequivalent antiferromagnetic exchanges. A broad low-temperature 11B nuclear magnetic resonance points to a considerable spin disorder in the system. In zero magnetic field, antiferromagnetic order sets in below TN≈4.1 K and ∼2.4 K for the Ga and Al compounds, respectively. From neutron diffraction, we find that the magnetic propagation vector in Cu2GaBO5 is commensurate and lies on the Brillouin-zone boundary in the (H0L) plane, qm=(0.45,0,−0.7), corresponding to a complex noncollinear long-range ordered structure with a large magnetic unit cell. Muon spin relaxation is monotonic, consisting of a fast static component typical for complex noncollinear spin systems and a slow dynamic component originating from the relaxation on low-energy spin fluctuations. Gapless spin dynamics in the form of a diffuse quasielastic peak is also evidenced by inelastic neutron scattering. Most remarkably, application of a magnetic field above 1 T destroys the static long-range order, which is manifested in the gradual broadening of the magnetic Bragg peaks. We argue that such a crossover from a magnetically long-range ordered state to a spin-glass regime may result from orphan spins on the structurally disordered magnetic sublattice, which are polarized in magnetic field and thus act as a tuning knob for field-controlled magnetic disorder.

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Держатели документа:
Institut fur Festkorper- und Materialphysik, Technische Universitat Dresden, Dresden, 01069, Germany
Wurzburg-Dresden Cluster of Excellence on Complexity and Topology in Quantum Matter - Ct.qmat, TU Dresden, Dresden, 01069, Germany
Institute for Theoretical Solid State Physics, IFW Dresden, Dresden, 01069, Germany
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok 50, Krasnoyarsk, 660036, Russian Federation
Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, Villigen PSI, CH-5232, Switzerland
Institute for Quantum Phenomena in Novel Materials, Helmholtz-Zentrum Berlin fur Materialen und Energie GmbH, Hahn-Meitner-Platz 1, Berlin, 14109, Germany
Max Planck Institute for Chemical Physics of Solids, Nothnitzer Str. 40, Dresden, 01187, Germany
Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS, Sibirsky tract 10/7, Kazan, 420029, Russian Federation
Fakultat Chemie und Lebensmittelchemie, Technische Universitat Dresden, Dresden, 01069, Germany
Julich Center for Neutron Science at MLZ, Forschungszentrum Julich GmbH, Lichtenbergstra?e 1, Garching, 85748, Germany

Доп.точки доступа:
Kulbakov, A. A.; Sarkar, R.; Janson, O.; Dengre, S.; Weinhold, T.; Moshkina, E. M.; Мошкина, Евгения Михайловна; Portnichenko, P. Y.; Luetkens, H.; Yokaichiya, F.; Sukhanov, A. S.; Eremina, R. M.; Schlender, P.; Schneidewind, A.; Klauss, H. -H.; Inosov, D. S.
}
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Unusual Valence States of Manganese Ions in Gadolinium Gallium Aluminum Borate Single Crystals [Text] / A. S. Aleksandrovsky, L. N. Bezmaternykh [et al.] // Известия высших учебных заведений. Физика. - 2008. - Т. 51, № 10/2. - P115-119

Доп.точки доступа:
Aleksandrovsky, A.S.; Bezmaternykh, L.N.; Bovina, A.F.; Gudim, I.A.; Kharlamova, S.A.; Krylov, A.S.; Melnikova, S.V.; Temerov, V.Ye.
}
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Electrically controllable optical switch based on one-dimensional photonic crystal / V. A. Gunyakov [et al.] // Proceedings of CAOL 2008: 4th International Conference on Advanced Optoelectronics and Lasers. - 2008. - 4th International Conference on Advanced Optoelectronics and Lasers, CAOL 2008 (29 September 2008 through 4 October 2008, Alushta, Crimea, ) Conference code: 74830. - P186-188, DOI 10.1109/CAOL.2008.4671886 . - ISBN 9781424419746 (ISBN)
Кл.слова (ненормированные):
Detect mode -- Liquid crystal -- Photonic band gap -- Photonic crystal -- Crossed polarizers -- Detect mode -- Electric-field -- Electrooptical switches -- Light waves -- Spectral ranges -- Crystal atomic structure -- Crystal defects -- Energy gap -- Gallium alloys -- Light sources -- Liquid crystals -- Liquid lasers -- Nematic liquid crystals -- Optical devices -- Photonic crystals -- Photonic band gap
Аннотация: Electrooptical switch within narrow spectral range has been demonstrated. The switch consisting of one-dimensional photonic crystal with a nematic liquid crystal defect layer was placed between two crossed polarizers. Principle of operation is based on the interference of the ordinary and extraordinary light waves passed across the device due to the electric-field induced coincidence of their wavelengths. © 2008 IEEE.

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Держатели документа:
L. V. Kirensky Institute of Physics, Krasnoyarsk Scientific Center, SB RAS
Siberian Federal University, Krasnoyarsk 660041, Russian Federation

Доп.точки доступа:
Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Myslivets, S. A.; Мысливец, Сергей Александрович; Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Shabanov, V. F.; Шабанов, Василий Филиппович; International Conference on Advanced Optoelectronics and Lasers(4th ; 2008 ; Apr. 29 Sep. - 04 Oct. ; Alushta, Crimea)
}
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10.

Defect modes in real photonic crystals / V. G. Arkhipkin [et al.] // Proceedings of CAOL 2008: 4th International Conference on Advanced Optoelectronics and Lasers. - 2008. - 4th International Conference on Advanced Optoelectronics and Lasers, CAOL 2008 (29 September 2008 through 4 October 2008, Alushta, Crimea, ) Conference code: 74830. - P183-185, DOI 10.1109/CAOL.2008.4671857 . - ISBN 9781424419746 (ISBN)
Кл.слова (ненормированные):
Detect mode -- Liquid crystal -- Photonic band gap -- Photonic crystal -- Defect modes -- Detect mode -- Number of layers -- Photonic crystal structures -- Crystal atomic structure -- Crystal structure -- Defects -- Energy gap -- Gallium alloys -- Light sources -- Liquid crystals -- Liquid lasers -- Optical devices -- Photonic band gap -- Silicon on insulator technology -- Photonic crystals
Аннотация: It is demonstrated experimentally that amplitudes of defect modes of one-dimensional photonic crystal have maximal value near edges of the photonic band gap while at the centre of the stop-band they are reduced, moreover than more number of layers in photonic crystal, the less the amplitude of defect mode at the center of the PBG. We explain such behavior of defect modes presence of losses at propagation of light in real photonic crystal structures. © 2008 IEEE.

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Держатели документа:
L.V. Kirensky Institute of Physics, Krasnoyarsk Scientific Center, SB RAS
Siberian Federal University, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Myslivets, S. A.; Мысливец, Сергей Александрович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович; International Conference on Advanced Optoelectronics and Lasers(4th ; 2008 ; Apr. 29 Sep. - 04 Oct. ; Alushta, Crimea)
}
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11.

Optical and Mossbauer Spectroscopy of Europium Gallium Garnet Single Crystals Grown from Fluxes of Different Content / A. S. Aleksandrovsky, V. G. Arkhipkin [et al.] // Известия высших учебных заведений. Физика. - 2008. - Т. 51, № 10/2. - P110-114

Доп.точки доступа:
Aleksandrovsky, A.S.; Arkhipkin, V.G.; Bezmaternykh, L.N.; Gudim, I.A.; Krylov, A.S.; Vagizov, F.
}
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12.

    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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13.

Multicomponent flux growth and composition control of Cu2MnBO5:Ga ludwigites / E. Moshkina, A. Krylov, D. Kokh [et al.] // CrystEngComm. - 2022. - Vol. 24, Is. 19. - P. 3565-3575, DOI 10.1039/d2ce00258b. - Cited References: 26. - This study was supported by the Russian Science Foundation (Grant No. 21-72-00130). The Raman, X-ray, and EDX data were obtained using the analytical equipment of the Krasnoyarsk Regional Center of Research Equipment of the Federal Research Center “Krasnoyarsk Science Center SB RAS” . - ISSN 1466-8033
Кл.слова (ненормированные):
Bismuth compounds -- Boron compounds -- Copper compounds -- Crystal symmetry -- Energy dispersive spectroscopy -- Gallium -- Manganese oxide -- Positive ions -- Sodium compounds
Аннотация: To reach the concentration phase boundary between antiferromagnetic Cu2GaBO5 and ferrimagnetic Cu2MnBO5 ludwigites, solid solutions Cu2Mn1−xGaxBO5 (x = 0.05, 0.1, 0.15, 0.175) were grown by the flux technique using a multi-component solvent based on Bi2Mo3O12 with the addition of Na2B4O7 which significantly influenced the crystal formation and cation composition of the studied compounds. The content of the flux system was corrected taking into account the earlier established relationship of the partition coefficients of Mn2O3 and Ga2O3. The influence of the solvent components on the ludwigite crystallization was analyzed. The maximum size of the grown crystal was 1 × 1 × 4 mm3. The structure and cation composition of the grown compounds were studied using X-ray (X-ray diffraction, EDX (energy-dispersive X-ray spectroscopy)) and vibrational (Raman) spectroscopy techniques. The phase boundary of Cu2MnBO5–Cu2GaBO5 was found to be in the concentration range of x = 0.15–0.175, corresponding to a change in the monoclinic axis direction and a leap in the lattice parameters. The symmetry evolution of metal–oxygen octahedra for four nonequivalent cation positions was analyzed, and the unique crystal structure of Cu2MnBO5 demonstrated high rigidity relative to the introduction of Ga3+ cations. The polarized Raman spectra of monoclinic ludwigites were obtained and studied for the first time. A comparison of the spectra of the studied samples in both phases and orthorhombic ludwigites was made. A number of spectral features due to the monoclinic distortions in the crystal were found. In agreement with the Raman experiment, the concentration phase boundary was close to 0.15.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian State University of Science and Technologies, Krasnoyarsk, 660037, Russian Federation
Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
St Petersburg University, St Petersburg, 199034, Russian Federation

Доп.точки доступа:
Moshkina, E. M.; Мошкина, Евгения Михайловна; Krylov, A. S.; Крылов, Александр Сергеевич; Kokh, D.; Shabanova, K.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bovina, A. F.; Бовина, Ася Федоровна; Plyaskin, M.; Пляскин, Михаил Е.; Rostovtsev, N.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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14.

    Atypical quantum confinement effect in silicon nanowires / P. B. Sorokin [et al.] // J. Phys. Chem. A. - 2008. - Vol. 112, Is. 40. - P9955-9964, DOI 10.1021/jp805069b. - Cited Reference Count: 25. - Гранты: This work was in part partially supported by a CREST (Core Research for Evolutional Science and Technology) grant in the Area of High Performance Computing for Multiscale and Multiphysics Phenomena from the Japan Science and Technology Agency (JST) as well as by Russian Fund of Basic Researches (grant 08-02-01096) (L.A.C.). P.V.A. acknowledges the encouragement of Dr. Keiji Morokuma, Research Leader at Fukui Institute for Fundamental Chemistry. The geometry of all presented structures was visualized by ChemCraft software.SUP25/SUP L.A.C. acknowledges I. V. Stankevich for help and fruitful discussions. P.B.S. is grateful to the Joint Supercomputer Center of the Russian Academy of Sciences for access to a cluster computer for quantum-chemical calculations. - Финансирующая организация: Japan Science and Technology Agency (JST); Russian Fund of Basic Researches [08-02-01096] . - OCT 9. - ISSN 1089-5639
Рубрики:
ELECTRONIC-STRUCTURE
   OPTICAL-PROPERTIES
   SI
   DENSITY
   WIRES
   EXCHANGE
   ATOMS
   DOTS
Кл.слова (ненормированные):
Electric wire -- Energy gap -- Gallium alloys -- Mathematical models -- Nanostructured materials -- Nanostructures -- Nanowires -- Quantum confinement -- Quantum electronics -- Semiconductor quantum dots -- Silicon -- Ami methods -- Band gaps -- Blue shifts -- Dinger equations -- Linear junctions -- Monotonic decreases -- Quantum confinement effects -- Quantum dots -- Semiempirical -- Silicon nanowires -- System sizes -- Theoretical models -- Nanocrystalline silicon -- nanowire -- quantum dot -- silicon -- article -- chemistry -- electron -- quantum theory -- Electrons -- Nanowires -- Quantum Dots -- Quantum Theory -- Silicon
Аннотация: The quantum confinement effect (QCE) of linear junctions of silicon icosahedral quantum dots (IQD) and pentagonal nanowires (PNW) was studied using DFT and semiempirical AM1 methods. The formation of complex IQD/PNW structures leads to the localization of the HOMO and LUMO on different parts of the system and to a pronounced blue shift of the band gap; the typical QCE with a monotonic decrease of the band gap upon the system size breaks down. A simple one-electron one-dimensional Schrodinger equation model is proposed for the description and explanation of the unconventional quantum confinement behavior of silicon IQD/PNW systems. On the basis of the theoretical models, the experimentally discovered deviations from the typical QCE for nanocrystalline silicon are explained.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia
LV Kirenskii Inst Phys, SB RAS, Krasnoyarsk 660036, Russia
RAS, N M Emanuel Inst Biochem Phys, Moscow 119334, Russia
Kyoto Univ, Fukui Inst Fundamental Chem, Kyoto 6068103, Japan
Natl Inst Adv Ind Sci & Technol, Res Inst Computat Sci, Tsukuba, Ibaraki 3058568, Japan

Доп.точки доступа:
Sorokin, P. B.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Avramov, P. V.; Chernozatonskii, L.A.; Fedorov, D.G.
}
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15.

Synthesis, structure, and thermophysical properties of EuGaGe2O7 / L. T. Denisova, M. S. Molokeev, L. A. Irtyugo [et al.] // Inorg. Mater. - 2020. - Vol. 56, Is. 8. - P. 854-858, DOI 10.1134/S002016852008004X. - Cited References: 18 . - ISSN 0020-1685. - ISSN 1608-3172

РУБ Materials Science, Multidisciplinary
Рубрики:
TEMPERATURE HEAT-CAPACITY
THERMODYNAMIC PROPERTIES
CRYSTAL-STRUCTURE
Кл.слова (ненормированные):
europium gallium germanate -- solid-state synthesis -- differential scanning calorimetry -- heat capacity -- structure -- thermodynamic properties
Аннотация: The europium gallium germanate EuGaGe2O7 has been prepared by solid-state reaction in air in the temperature range 1273–1473 K using a stoichiometric mixture of Eu2O3, Ga2O3, and GeO2. Its crystal structure has been determined by X-ray diffraction (sp. gr. P21/c, a = 7.1693(7) Å, b = 6.57008(6) Å, c = 12.7699(1) Å, β = 117.4522(5)°, V = 533.768(8) Å3). The heat capacity of polycrystalline samples has been determined by differential scanning calorimetry in the temperature range 350–1053 K and the experimental data have been used to calculate the thermodynamic properties (enthalpy increment, entropy change, and reduced Gibbs energy change) of EuGaGe2O7.

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Публикация на русском языке Синтез, структура и теплофизические свойства EuGaGe2O7 [Текст] / Л. Т. Денисова, М. С. Молокеев, Л. А. Иртюго [и др.] // Неорган. матер. - 2020. - Т. 56 № 8. - С. 901-905

Держатели документа:
Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Svobodnyi Pr 79, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Fed Res Ctr, Kirensky Inst Phys,Krasnoyarsk Sci Ctr, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Ul Akad Kirenskogo 28-12 B, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Baikov Inst Met & Mat Sci, Leninskii Pr 49, Moscow 119991, Russia.

Доп.точки доступа:
Denisova, L. T.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Irtyugo, L. A.; Beletskii, V. V.; Kargin, Yu. F.; Denisov, V. M.
}
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16.

Ignatchenko, V. A.
High-Frequency Susceptibility of a Superlattice with 2D Inhomogeneities / V. A. Ignatchenko, Y. I. Mankov, D. S. Tsikalov // J. Exp. Theor. Phys. - 2008. - Vol. 107, Is. 4. - P. 603-611, DOI 10.1134/S1063776108100075. - Cited References: 26. - This work was supported in part by grant no. 3818.2008.3 from the President of Russia in accordance with the program supporting leading scientific schools. . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
SPIN-WAVE SUSCEPTIBILITY
   PERIODIC MULTILAYERS
   LOCALIZATION
   SYSTEMS
   SPECTRUM
   DISORDER
   MEDIA
Кл.слова (ненормированные):
Energy conservation -- Energy gap -- Energy management -- Frequency bands -- Gallium alloys -- Green's function -- Probability density function -- Three dimensional -- Band gaps -- Energy conservation laws -- Green functions -- High frequencies -- Imaginary parts -- Magnon crystals -- Scattered waves -- Superlattice layers -- Wave spectrums -- Phase interfaces
Аннотация: We investigate the high-frequency susceptibility (Green function) of an initially sinusoidal 1D superlattice with 2D phase inhomogeneities that model the deformations of the interfaces between the superlattice layers. For waves propagating along the superlattice axis ( the geometry of a photon or magnon crystal), we have found a peculiar behavior of the imaginary part of the Green function that consists in a significant difference between the peaks corresponding to the edges of the band gap in the wave spectrum. The peak corresponding to the lower-frequency band edge remains essentially unchanged as the root-mean-square fluctuation of the 2D inhomogeneities. 2 increases, while the peak corresponding to the higher-frequency band edge broaden and decreases sharply in height until its complete disappearance with increasing gamma(2). This behavior of the peaks corresponds to a band gap closure mechanism that differs from the traditional one characteristic of 1D and 3D inhomogeneities. These effects can be explained by a peculiarity of the energy conservation laws for the incident and scattered waves for 2D inhomogeneities in a 1D superlattice.

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Держатели документа:
[Ignatchenko, V. A.
Mankov, Yu. I.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Mankov, Yu. I.
Tsikalov, D. S.] Siberian Fed Univ, Krasnoyarsk 660062, Russia
ИФ СО РАН
L.V. Kirenskii Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Krasnoyarsk 660062, Russian Federation

Доп.точки доступа:
Mankov, Y. I.; Tsikalov, D. S.; Цикалов, Денис Сергеевич; Игнатченко, Вальтер Алексеевич
}
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17.

Origin of color centers in the flux-grown europium gallium garnet / A. S. Aleksandrovsky [et al.] // J. Appl. Phys. - 2008. - Vol. 103, Is. 8. - Ст. 83102, DOI 10.1063/1.2902365. - Cited References: 7 . - ISSN 0021-8979

РУБ Physics, Applied
Рубрики:
SPECTRA
IONS
Кл.слова (ненормированные):
Absorption -- Europium alloys -- Garnets -- Ultraviolet radiation -- Calcium-free flux -- Flux-grown europium gallium garnet -- Color centers
Аннотация: Europium gallium garnet (EuGG) single crystals were grown from fluxes with various contents. Optical absorption spectra of EuGG grown from a flux containing calcium show an additional band in the ultraviolet and blue regions of the spectra as compared to the case of a calcium-free flux. Mossbauer spectra of the samples grown from the fluxes with different additives show no signs of other valence states of the europium ions except for 3+. However, they indicate changes in the crystal field due to the entrance of additive ions. The nature of the additional absorption must be the same as that for calcium-doped gadolinium gallium garnet, i.e., anion vacancies. Mossbauer isotope shifts and quadrupole splitting for EuGG are determined. (C) 2008 American Institute of Physics.

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Держатели документа:
[Aleksandrovsky, A. S.
Arkhipkin, V. G.
Bezmaternykh, L. N.
Gudim, I. A.
Krylov, A. S.] LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
[Aleksandrovsky, A. S.
Arkhipkin, V. G.
Bezmaternykh, L. N.
Gudim, I. A.
Krylov, A. S.] Siberian Fed Univ, Krasnoyarsk 660079, Russia
[Vagizov, F.] Texas A&M Univ, Dept Phys, College Stn, TX 77840 USA
ИФ СО РАН
L. V. Kirensky Institute of Physics, Siberian Federal University, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Department of Physics, Texas A and M University, College Station, TX 77840, United States

Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Krylov, A. S.; Крылов, Александр Сергеевич; Vagizov, F.
}
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18.

Zeeman effect and stark splitting of the electronic states of the rare-earth ion in the paramagnetic terbium garnets Tb3Ga5O12 and Tb3Al5O12 / U. V. Valiev [et al.] // Phys. Solid State. - 2007. - Vol. 49, Is. 1. - P. 91-98, DOI 10.1134/S1063783407010167. - Cited References: 14 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
YTTRIUM-ALUMINUM-GARNET
   SELECTIVE POLARIZED SPECTROSCOPY
   CRYSTAL-FIELD ANALYSIS
   GALLIUM GARNET
Аннотация: The Zeeman effect in the F-7(6) - D-5(4) absorption band of the Tb3+ ion in the paramagnetic garnets Tb3Ga5O12 and Tb3Al5O12 was Studied. The field dependences of the Zeeman splitting of some absorption lines arc found to exhibit unusual behavior: as the magnetic field increases, the hand splitting decreases rather than increases. Symmetry analysis relates these lines to 4f - 4f electron transitions of the doublet-quasi-doublet or quasi-doublet-doublet type, for which the field dependences of the splitting differ radically from the well-known field dependences of the Zeeman splitting for quasi-doublet-quasi-doublet or quasi-doublet-singlet transitions in a longitudinal magnetic field.

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Держатели документа:
Natl Univ Uzbekistan, Tashkent 700174, Uzbekistan
Univ Texas, San Antonio, TX 78249 USA
ARL, Adelphi Lab Ctr, Adelphi, MD 20783 USA
Natl Acad Sci Ukraine, Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
National University of Uzbekistan, Tashkent 700174, Uzbekistan
University of Texas at San Antonio, San Antonio, TX 78249-0697, United States
ARL, Adelphi Laboratory Center, Adelphi, MD 20783-1197, United States
Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, pr. Lenina 47, Kharkov, 61103, Ukraine
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Valiev, U. V.; Gruber, J. B.; Sardar, D. K.; Zandi, B.; Kachur, I. S.; Mukhammadiev, A. K.; Piryatinskaya, V. G.; Sokolov, V. Y.; Edelman, I. S.; Эдельман, Ирина Самсоновна
}
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19.

Magnetic resonance in a gallium-doped Cu–Cr–S structure / A. M. Vorotynov [et al.] // Phys. Solid State. - 2016. - Vol. 58, Is. 4. - P. 678-681, DOI 10.1134/S1063783416040314. - Cited References: 9 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
Ferromagnetic spinels
Аннотация: A layered Cu–Cr–S structure doped with Ga ions and consisting of single-crystal CuCrS2 layers, embedded with thin plates of spinel phases CuCr2S4 and CuGaxCr2–xS4, has been studied using the magnetic resonance and magnetic susceptibility methods. The Curie temperature and the saturation magnetization of the spinel phases of the samples have been determined. The spinel phase layer thickness has been estimated. © 2016, Pleiades Publishing, Ltd.

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Публикация на русском языке Магнитный резонанс в структуре Cu-Cr-S, допированной галлием [Текст] / А. М. Воротынов [и др.] // Физ. тверд. тела : Физико-технический институт им. А. Ф. Иоффе РАН, 2016. - Т. 58 Вып. 4. - С. 660-663

Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok-50, Building 38, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodny pr. 79, Krasnoyarsk, Russian Federation
Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, ul Akademika Lavrent’eva 3, Novosibirsk, Russian Federation

Доп.точки доступа:
Vorotynov, A. M.; Воротынов, Александр Михайлович; Pankrats, A. I.; Панкрац, Анатолий Иванович; Abramova, G. M.; Абрамова, Галина Михайловна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Bovina, A. F.; Бовина, Ася Федоровна; Sokolov, V. V.; Filatova, I. Y.
}
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20.

Spin-glass state in CuGa2O4 / G. A. Petrakovskii [et al.] // Phys. Rev. B. - 2001. - Vol. 63, Is. 18. - Ст. 184425, DOI 10.1103/PhysRevB.63.184425. - Cited References: 28 . - ISSN 0163-1829

РУБ Physics, Condensed Matter
Рубрики:
TRANSITION
Кл.слова (ненормированные):
copper -- gallium -- glass -- oxygen -- acceleration -- article -- magnetism -- measurement -- molecular dynamics -- phase transition
Аннотация: Magnetic susceptibility, magnetization, specific-heat, and positive muon spin relaxation (?SR) measurements have been used to characterize the magnetic ground state of the spinel compound CuGa2O4. We observe a spin-glass transition of the S = 1/2 Cu2+ spins below Tf = 2.5 K characterized by a cusp in the susceptibility curve which is suppressed when a magnetic field is applied. We show that the magnetization of CuGa2O4 depends on the magnetic history of the sample. Well below Tf, the muon signal resembles the dynamical Kubo-Toyabe expression reflecting that the spin freezing process in CuGa2O4 results in a Gaussian distribution of the magnetic moments. By means of Monte Carlo simulations, we obtain the relevant exchange integrals between the Cu2+ spins in this compound.

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Держатели документа:
Institute of Physics, Academy of Sciences, Siberian Branch, 660036 Krasnoyarsk, Russian Federation
Laboratory for Neutron Scattering, Paul Scherrer Institute, ETH Zurich, CH-5232 Villigen PSI, Switzerland
Laboratory for Muon-Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
Instituto de Ciencia de Materiales de Aragon, CSIC-Universidad de Zaragoza, Ciudad Universitaria, 50009 Zaragoza, Spain
Kamerlingh Onnes Laboratorium, Leiden University, Netherlands

Доп.точки доступа:
Petrakovskii, G. A.; Петраковский, Герман Антонович; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Roessli, B.; Semadeni, F.; Amato, A.; Baines, C.; Bartolome, J.; Evangelisti, M.
}
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