Труды сотрудников института физики

/ V. V. Atuchin [и др.] // J. Alloys Compd. - 2012. - Vol. 515. - P. 119-122, DOI 10.1016/j.jallcom.2011.11.115. - Cited References: 30. - This study was supported by SB RAS (Grant 34) and RFBR Grants 11-02-90706-mob_st and 11-03-00867a. . - ISSN 0925-8388
   Перевод заглавия: Получение и структурные свойства нелинейных оптических боратов K 2(1-x)Rb 2xAl 2B 2O 7, 0 ˂ x ˂ 0.75РУБ Chemistry, Physical + Materials Science, Multidisciplinary + Metallurgy & Metallurgical Engineering + Aluminum + Crystal structure + Nonlinear optics + Rietveld analysis + Rubidium + Solid solutions + Structural properties + X ray powder diffraction

Аннотация: The structures of K 2(1-x)Rb 2xAl 2B 2O 7, x = 0.25, 0.5, 0.75, have been determined in space group P321 through Rietveld analysis of X-ray powder diffraction data. The solubility limit in K 2(1-x)Rb 2xAl 2B 2O 7 crystals has been estimated as x similar to 0.83-0.9. Nonlinear optical properties of KRbAl 2B 2O 7 have been verified by powder Kurtz-Perry method. Mechanisms of structural parameter variation in K 2Al 2B 2O 7 crystal family have been discussed.

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Доп.точки доступа:
Atuchin, V. V.; Bazarov, B. G.; Gavrilova, T. A.; Grossman, V. G.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bazarova, Zh. G.

/ A. S. Aleksandrovsky [et al.] // VI International symposium on modern problems of laser physics (MPLP'2013) : [Proceedings]. - 2013. - Ст. B1. - P. 197


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Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Zaitsev, A. I.; Зайцев, Александр Иванович; Trabs, P.; Noack, F.; Petrov, V.; Slabko, V. V.; Слабко, Виталий Васильевич; Radionov, N. V.; Радионов, Никита Вячеславович; "Modern problems of laser physics", International symposium(6 ; 2013 ; Aug. 25-31 ; Novosibirsk)

/ A. S. Aleksandrovsky [et al.] ; ed.: C. Fabre, V. Zadkov // Proc. of SPIE. - 2011. - Vol. 7993. - Ст. 799302. - P. , DOI 10.1117/12.872943. - Cited References: 9 . - ISSN 0277-786X. - ISSN 978-0-819РУБ Optics

Аннотация: Random quasi-phase-matched frequency doubling of fs pulses to the deep UV was obtained in 1D nonlinear photonic crystal (NPC) of strontium tetraborate. Tuning range of generated radiation is from 187.5 to 215 nm. The spectrum of generated radiation consists from series of peaks with the width of order of 1 angstrom. These peaks are the manifestation of the NPC band structure. Using fs oscillator as the fundamental radiation source, maximum average power of generated radiation is of order 1 mu W, the enhancement factor with respect to monodomain sample being of order of several hundred. The red rotational shift of NPC band structure is experimentally demonstrated.

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Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Ikonnikov, A. A.; Pospelov, G. I.; Slabko, V. V.; Слабко, Виталий Васильевич; Fabre, C. \ed.\; Zadkov, V. \ed.\; International Conference on Coherent and Nonlinear Optics(2010 ; Aug. ; 23-26 ; Kazan, Russia)

/ A. K. Popov [et al.] // Proceedings of SPIE - The International Society for Optical Engineering. - 2013. - Vol. 8725. - Ст. 87252E. - P. , DOI 10.1117/12.2015637 . - ISSN 0277-786X
Аннотация: A concept of a family of unique backward-wave photonic devices, such as frequency up and down converting nonlinear-optical mirrors, sensors, modulators, filters and amplifiers is proposed. Novel materials are considered, which support coexistence of ordinary and backward waves and thus enable enhanced nonlinear-optical frequency-conversion processes. Particular properties of short-pulse regime are investigated. В© 2013 SPIE.

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Доп.точки доступа:
Popov, A. K.; Попов, Александр Кузьмич; Nefedov, I. S.; Myslivets, S. A.; Мысливец, Сергей Александрович; Shalaev, M. I.; Slabko, V. V.; Слабко, Виталий Васильевич; Micro- and Nanotechnology Sensors, Systems, and Applications, Conference(5 ; Baltimore, MD)(29 April 2013 - 3 May 2013)

/ A. V. Malakhovskii [et al.] // Chem. Phys. - 2014. - Vol. 428. - P. 137–143, DOI 10.1016/j.chemphys.2013.11.008. - Cited References: 43. - The work was supported by the Russian Foundation for Basic Researches grant 12-02-00026, by the Russian President Grants SS-1044.2012.2 and 4828.2012.2, by project No 3.9.5 PSB RAS, and by the Ministry of Education and Science of Russian Federation grant 8365 . - ISSN 0301-0104. - ISSN 1873-4421
   Перевод заглавия: Спектроскопические свойства монокристалла ErAl3(BO3)4РУБ Chemistry, Physical + Physics, Atomic, Molecular & Chemical

Аннотация: Single crystal of ErAl3(BO3)4 was grown and its structure was studied. Polarized absorption spectra of ErAl3(BO3)4 single crystal were measured in the spectral range 1670–330 nm (6000–30000 cm−1). The Judd–Ofelt spectroscopic parameters have been determined: Ω2 = 4.87 × 10−20 cm2, Ω4 = 2.49 × 10−20 cm2, Ω6 = 2.72 × 10−20 cm2. These parameters have been used to calculate the radiative transition probabilities, the multiplet luminescence branching ratios and the fluorescence life times of the manifolds. The luminescence spectra due to transitions 2H11/2 → 4I15/2 (526 nm), 4S3/2 → 4I15/2 (548 nm), 4F9/2 → 4I15/2 (662 nm), 2H11/2 → 4I13/2 + 4I9/2 → 4I15/2 (800 nm) and 4S3/2 → 4I13/2 (855 nm) were recorded in α, σ and π polarizations. The most intensive luminescence belonged to 4S3/2 → 4I15/2 transition (548 nm).
Поляризованные спектры поглощения ErAl3 (BO3) 4 монокристалла были измерены в спектральном диапазоне 1670-330 нм (6000-30000 см-1). Спектроскопические параметры Джадда-Офельта были определены как: Ω2 = 4,87 • 10-20 см2, Ω4 = 2.49 • 10-20 см2, Ω6 = 2,72 • 10-20 см2. Параметры были использованы для расчета вероятностей излучающих переходов, мультиплетные отношения люминесценции раскола и времена жизни мультиплетов. Спектры люминесценции за счет переходов 2П11 / 2 → 4I15 / 2 (526 нм), 4S3 / 2 → 4I15 / 2 (548 нм), 4F9 / 2 → 4I15 / 2 (662 нм), 2П11 / 2 → 4I13 / 2 + 4I9 / 2 → 4I15 / 2 (800 нм) и 4S3 / 2 → 4I13 / 2 (855 нм) были записаны в α, σ и π поляризации. Наиболее интенсивное свечение принадлежало переходу 4S3 / 2 → 4I15 / 2 (548 нм).

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Доп.точки доступа:
Malakhovskii, A. V.; Малаховский, Александр Валентинович; Kutsak, T. V.; Куцак, Т. В.; Sukhachev, A. L.; Сухачев, Александр Леонидович; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Krylov, A. S.; Крылов, Александр Сергеевич; Gudim, Irina A.; Гудим, Ирина Анатольевна; Molokeev, M. S.; Молокеев, Максим Сергеевич

/ A. S. Aleksandrovsky [et al.] // Laser Optics 2012. - 2012. - Ст. WeR1-p69. - P. 42

Материалы конференции


Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Pospelov, G. I.; Поспелов Г.И.; Rovsky, V. E.; Ровский В.Е.; Slabko, V. V.; Слабко, Виталий Васильевич; "Laser Optics", International conference (15 ; 2012 ; June ; 25-29 ; St. Petersburg); "Оптика лазеров", Международная конференция (15 ; 2012 ; июнь ; 25-29 ; Санкт-Петербург)

/ A. S. Aleksandrovsky [et al.] // Appl. Phys. Lett. - 2013. - Vol. 103, № 25. - Ст. 251104. - P. DOI 10.1063/1.4852035 . -
Аннотация: Conversion of fs supercontinuum to the ultraviolet (UV) range from 260 to 305 nm in nonlinear photonic crystal of strontium tetraborate is obtained. Spectral shape of generated UV radiation is governed by the shape of supercontinuum spectrum, focusing conditions and phase mismatch in the material of nonlinear photonic crystal. Maximum integral UV power of 2.6 μW was obtained in the case of weaker focusing, and peaks with the spectral width 1–3 nm dominate in the spectrum. Using tight focusing, broadband radiation in the range 265–300 nm was obtained.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660079, Russia

Доп.точки доступа:
Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Zaitsev, A. I.; Зайцев, Александр Иванович; Slabko, V. V.; Слабко, Виталий Васильевич

/ L. Badia-Romano [et al.] // SPIN. - 2014. - Vol. 4, № 1. - P. 1440002DOI 10.1142/S2010324714400025 . -
Аннотация: Diffusion and reaction of elements at the interfaces of nanostructured systems play an important role in controlling their physical and chemical properties for subsequent applications. (Fe/Si) nanolayers were prepared by thermal evaporation under ultrahigh vacuum onto a Si(100) substrate. A morphological characterization of these films was performed by combination of scanning transmission electron microscopy (STEM) and X-ray reflectivity (XRR). The compositional depth profile of the (Fe/Si) structures was obtained by angle resolved X-ray photoelectron spectroscopy (ARXPS) and hard X-ray photoelectron spectroscopy (HAXPES). Moreover, determination of the stable phases formed at the Si on Fe interfaces was performed using conversion electron Mössbauer spectroscopy. The Si/Fe interface thickness and roughness were determined to be 1.4 nm and 0.6 nm, respectively. A large fraction of the interface is composed of c-Fe1-xSi paramagnetic phase, though a minoritary ferromagnetic Fe rich silicide phase is also present.

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Доп.точки доступа:
Badía-Romano, L.; Rubin, J.; Bartolomé, F.; Bartolome, J.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Varnakov, S.N.; Варнаков, Сергей Николаевич; Magen, C.; Rubio-Zuazo, J.; Castro, G. R.

/ V. V. Atuchin [et al.] // Asian J. Chem. - 2014. - Vol. 26, No. 5. - P. 1284-1286, DOI 10.14233/ajchem.2014.17209. - Cited References: 26. - This study is partly supported by by the Ministry of Education and Science of the Russian Federation. . - ISSN 0970-7077
   Перевод заглавия: Синтез и электронные свойства бета-RbNd(MoO4)2РУБ Chemistry, Multidisciplinary

Аннотация: The electronic structure of β-RbNd(MoO4)2 has been evaluated from experimental and theoretical points of view. For the molybdate, X-ray photoelectron valence-band spectra have been measured. The total and partial densities of states of the constituent atoms of β-RbNd(MoO4)2 have been calculated using the FP-LAPW method. The FP-LAPW data reveal that main contributors in the valence-band region of β-RbNd(MoO4)2 are the Rb 4p-, Nd 4f-, Mo 4d- and O 2p-like states.

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Держатели документа:
SB RAS, Lab Opt Mat & Struct, Inst Semicond Phys, Novosibirsk 630090, Russia
Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia
Novosibirsk State Univ, Novosibirsk 630090, Russia
Natl Acad Sci Ukraine, Frantsevich Inst Problems Mat Sci, UA-03142 Kiev, Ukraine
SB RAS, Lab Oxide Syst, Baikal Inst Nat Management, Ulan Ude 670047, Russia
SB RAS, Lab Crystal Phys, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Hanseo Univ, Dept Adv Mat Sci & Engn, Seosan 356706, South Korea

Доп.точки доступа:
Atuchin, V. V.; Bekenev, V. L.; Chimitova, O. D.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Bazarov, B. G.; Базаров Б. Г.; Bazarova, J. G.; Базарова Ж. Г.; Khuzhum, O. Y.; Lim, C. S.

/ G. Li [et al.] // Chem. Mater. - 2014. - Vol. 26, Is. 9. - P. 2991-3001, DOI 10.1021/cm500844v. - Cited References: 62. - The authors would like to thank the Ministry of Science and Technology of Taiwan (Contract No. MOST 101-2113-M-002-014-MY3), the National Synchrotron Radiation Research Center, Taiwan, the National Natural Science Foundation of China (Grant No. NSFC 21301162), and the Fundamental Research Funds for the Central Universities (Grant No. CUG 130402) for financially supporting this research. Victor V. Atuchin gratefully acknowledges the Ministry of Education and Science of the Russian Federation for the financial support. . - ISSN 0897-4756. - ISSN 1520-5002
   Перевод заглавия: Управление фотолюминесценцией посредством замещения катионов в оксонитридосиликатных люминофорах: ТФП вычисления, заселения различных позиций и механизмы люминесценцииРУБ Chemistry, Physical + Materials Science, Multidisciplinary

Аннотация: Tuning and optimizing luminescent properties of oxonitridosilicates phosphors are important for white light-emitting diode (WLED) applications. To improve the color rendering index, correlated color temperature and thermal stability of layer-structured MSi2O2N2:Eu (M = Sr, Ba) phosphors, cation substitutions have been used to adjust their luminescent properties. However, the underlying mechanisms are still unclear. In this research, a series of (Sr1-xBax)Si2O2N2:Eu (0 ≤ x ≤ 1) compounds were prepared by solid-state reaction, after which systematic emission variations were investigated. The crystal structures of (Sr1-xBax)Si2O2N2:Eu (0 ≤ x ≤ 1) are nominally divided into three sections, namely, Phase 1 (0 ≤ x ≤ 0.65), Phase 2 (0.65 x 0.80), and Phase 3 (0.80 ≤ x ≤ 1) based on the X-ray diffraction measurements. These experimental results are further confirmed by optimizing the crystal structure data with first-principle calculations. Continuous luminescence adjustments from green to yellow are observed in Phase 1 with gradual replacement of Sr2+ with Ba2+, and the abnormal redshift is clarified through extended X-ray absorption fine structure analysis. Sr(Eu)-O/N bond length shrinkage in local structure causes the redshift emission, and the corresponding luminescence mechanism is proposed. Controllable luminescence in Phase 2 (from blue to white) and Phase 3 (from cyan to yellowish green) are observed. Based on the high-resolution transmission electron microscopy and selected area electron diffraction analysis, the two kinds of luminescence tuning are attributed to phase segregation. This study serves as a guide in developing oxonitride luminescent materials with controllable optical properties based on variations in local coordination environments through cation substitutions.

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Держатели документа:
Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan
China Univ Geosci, Fac Mat Sci & Chem, Wuhan 430074, Hubei, Peoples R China
SB RAS, Lab Crystal Phys, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
SB RAS, Lab Opt Mat & Struct, Inst Semicond Phys, Novosibirsk 630090, Russia
Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia
Univ St Andrews, Sch Chem, EaSTCHEM, St Andrews KY16 9ST, Fife, Scotland
Natl Cent Univ, Ctr Neutron Beam Applicat, Zhongli 320, Taiwan
Natl Synchrotron Radiat Res Ctr, Hsinchu 300, Taiwan
Chongqing Univ Posts & Telecommun, Coll Math & Phys, Chongqing 400065, Peoples R China
Novosibirsk State Univ, Lab Semicond & Dielect Mat, Novosibirsk 630090, Russia

Доп.точки доступа:
Li, G.; Lin, C. C.; Chen, W.-T.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Atuchin, V. V.; Chiang, C.-Y.; Zhou, W.; Wang, C.-W.; Li, W.-H.; Sheu, H.-S.; Chan, T.-S.; Ma, C.; Liu, R.-S.

/ E. N. Bulgakov [et al.] // J. Opt. Soc. Am. A. - 2014. - Vol. 31, Is. 2. - P. 264-267, DOI 10.1364/JOSAA.31.000264. - Cited References: 8. - This work was partially supported by RFBR grant 13-02-00497, and grants no. 43, 101 and 24.29 of SB RAS, and NSCT-SB RAS. We thank D. N. Maksimov for critical reading of the manuscript. . - ISSN 1084-7529. - ISSN 1520-8532
   Перевод заглавия: Резонансная угловая конверсия в резонаторе Фабри-Перо, содержащегодиэлектрический стерженьРУБ Optics

Аннотация: Light transmission through a Fabry–Perot resonator (FPR) holding a dielectric cylinder rod is considered. For the cylinder parallel to mirrors of the FPR and the mirrors mimicked by the δ functions we present an exact analytical theory. It is shown that light transmits only for resonant incident angles, αm, similar to the empty FPR. However after transmission the light scatters into different resonant angles, αm′ , performing resonant angular conversion. We compare the theory with experiment in the FPR, exploring multilayer films as the mirrors and glass cylinder with diameter coincided with the distance between the FPR mirrors. The measured values of angular light conversion agree qualitatively with the theoretical results.

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Доп.точки доступа:
Bulgakov, E. N.; Булгаков, Евгений Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Gerasimov, V. P.; Герасимов, Виктор Петрович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; RFBR [13-02-00497, 43, 101, 24.29]

/ A. K. Popov, S. A. Myslivets // Proceedings of SPIE - The International Society for Optical Engineering. - 2014. - Vol. 9157. - Ст. 91573B, DOI 10.1117/12.2059728. - Cited References: 15. - This work was supported in parts by the Air Force Office of Scientific Research (Grant No FA950-12-1-298), by the National Science Foundation (Grant No ECCS-1346547) and by the Presidium of the Siberian Branch of the Russian Academy of Sciences (Grants No. 43 and No. 101). . - ISSN 978-16284. - ISSN 0277-786XРУБ Optics + Physics, Applied

Аннотация: A concept of the remotely actuated and interrogated four-wave mixing photonic sensor, which employs the negative-index photonic materials, is described. Unique electromagnetic properties of such a metamaterial enable enhancement of frequency conversion and redirection of the signals which carry important information for environmental probing. Four-wave mixing process allows for independent engineering of resonantly enhanced optical nonlinearities and negative refractive index. © 2014 SPIE.

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Myslivets, S. A.; Мысливец, Сергей Александрович; International Conference on Optical Fibre Sensors (23 ; 2014 ; Jun. ; 2 - 6 ; Santander, Spain); International conference on optical fibre sensors(23 ; 2014 ; Jun. ; 2-6 ; Santander, Spain)

[Текст] / A. M. Vyunishev [и др.] // WE-Heraeus-Seminar: "Light in Disordered Photonic Media", 546. - 2013


Доп.точки доступа:
Vyunishev, A. M.; Вьюнышев, Андрей Михайлович; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Slabko, V. V.; Слабко, Виталий Васильевич; "Light in Disordered Photonic Media", 546. WE-Heraeus-Seminar (546 ; 2013 ; 2-4 dec ; Bad Honnef, Germany)

/ A. V. Malakhovskii [et al.] // J. Magn. Magn. Mater. - 2015. - Vol. 384. - P. 255-265, DOI 10.1016/j.jmmm.2015.02.051. - Cited References: 44. - The work was supported by the Russian Foundation for Basic Researches Grant 12-02-00026 and by the President of Russia Grant no. Nsh-2886.2014.2. . - ISSN 0304-8853. - ISSN 1873-4766РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter

Аннотация: Absorption, magnetic circular dichroism and natural circular dichroism spectra of ErFe3(BO3)4 and ErAl3(BO3)4 single crystals were measured as a function of temperature in the range of 90–293 K. It was found out that magneto-optical activity of the same f–f transitions in the studied crystals substantially differed and their temperature dependences did not follow the Curie–Weiss law in contrast to the properties of allowed transitions. The observed phenomena were accounted for by the nature of f–f transitions allowance. Properties of the transition 4I15/2→4S3/2 were studied in detail. In particular, the Zeeman splitting and the natural optical activity of the absorption lines composed of the transition were determined. The vibronic line with the very large natural optical activity was revealed and identified. Two nonequivalent Er3+ ion positions with the opposite chirality were found out in one of the excited states. Polarization properties of the 4I15/2→4S3/2 transition in the ErFe3(BO3)4 crystal have shown that the local symmetry of Er3+ ion in this crystal in the range of 90–293 K is lower than the D3 one. From the heat capacity measurements it was revealed, that the first order structural phase transition to lower symmetry occurred in ErFe3(BO3)4 at 433–439 K.
Поглощение, магнитный циркулярный дихроизм и спектры природного кругового дихроизма монокристаллов ErFe3(BO3)4 и ErAl3(BO3)4 были измерены в зависимости от температуры в диапазоне 90-293 К. Было обнаружено, что по магнитооптической активности одни и те жеF-F переходы в исследованных кристаллах существенно отличаются и их температурные зависимости не следовать закону Кюри-Вейсса в отличие от свойств разрешенных переходов. Наблюдаемые явления были учтены по характеру F-Fпереходов. Свойства перехода 4I15 / 2 → 4S3 / 2 были детально изучены. В частности, расщепление Зеемана и явление естественной оптической активности линий поглощения, состоящих в переходе были полны решимости. Вибронная линия очень большой естественной оптической активности выявлена и идентифицирована. Две неэквивалентных позиций ионовEr3 + с противоположной хиральности были найдены в одном из возбужденных состояний. Поляризационные свойства 4I15 / 2 → 4S3 / 2 перехода в ErFe3(BO3)4 кристалла показали, что локальная симметрия ионов Er3 + в этом кристалле в диапазоне 90-293 К ниже, чем D3. Из измерений теплоемкости Было обнаружено, что структурный фазовый переход первого типа к более низкой симметрии произошел в ErFe3(BO3) 4 при 433-439 К. Ключевые слова: Магнитный круговой дихроизм; Природные круговой дихроизм; Редкоземельные ферроборатов; Редкоземельныеalumoborates; Электронная структура; 44 источника.

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Malakhovskii, A. V.; Малаховский, Александр Валентинович; Sukhachev, A. L.; Сухачев, Александр Леонидович; Sokolov, V. V.; Соколов В. В.; Kutsak, T. V.; Bondarev, V. S.; Бондарев, Виталий Сергеевич; Gudim, I. A.; Гудим, Ирина Анатольевна; Russian Foundation for Basic Researches [12-02-00026]; President of Russia Grant [Nsh-2886.2014.2]

/ V. G. Arkhipkin, I. V. Timofeev // Phys. Rev. A. - 2006. - Vol. 73, Is. 2. - Ст. 25803, DOI 10.1103/PhysRevA.73.025803. - Cited References: 37 . - ISSN 1050-2947РУБ Optics + Physics, Atomic, Molecular & Chemical

Аннотация: We describe how to control the temporal shape of adiabaton using peculiarities of propagation dynamics under coherent population trapping. Temporal compression is demonstrated as a special case of pulse shaping. The general case of unequal oscillator strengths of two optical transitions in an atom is considered.

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Доп.точки доступа:
Timofeev, I. V.; Тимофеев, Иван Владимирович; Архипкин, Василий Григорьевич

/ M. Guan [et al.] // J. Am. Ceram. Soc. - 2015. - Vol. 98, Is. 4. - P. 1182-1187, DOI 10.1111/jace.13415. - Cited References:26. - This present work was supported by the National Natural Science Foundations of China (grant no. 51202226), the Fundamental Research Funds for the Central Universities (grant nos. 292014125,2652013128, 2652013043), and the Research Fund for the Doctoral Program of Higher Education of China (grant no. 20130022110006). . - ISSN 0002. - ISSN 1551-2916
   Перевод заглавия: Синтез, структура и ап-конверсионная люминесценция SrIn2O4 допированного Yb3+/Er3+РУБ Materials Science, Ceramics

Аннотация: SrIn2O4, which shows lower phonon energy than CaIn2O4, is not only a good photocatalyst but also can be an excellent up-conversion (UC) host to exhibits UC luminescence. In this work, Yb3+ and/or Er3+ doped SrIn2O4 phosphors were synthesized, and their UC luminescence properties were studied and compared with those in the CaIn2O4 host. The structure of SrIn2O4: 0.01Er3+ and SrIn2O4: 0.1Yb3+/0.01Er3+ samples were refined by the Rietveld method and found to that SrIn2O4: 0.1Yb3+/0.01Er3+ showed increasing unit cell parameters and cell volume, indicating In3+ sites were substituted successfully by Yb3+ and/or Er3+ ions. From the UC luminescence spectra and diffuse reflection spectra, Er3+-doped SrIn2O4 showed very weak luminescence due to ground state absorption of Er3+; Yb3+/Er3+ codoped SrIn2O4 presented strong green (550 nm) and red (663 nm) UC emissions which were assigned to energy transfer from Yb3+ transition 2F7/2→2F5/2 to the Er3+ transition 4S3/2 → 4I15/2 and 4F9/2 → 4I15/2. Comparing with CaIn2O4, Yb3+/Er3+ codoped SrIn2O4 showed obvious advantages with higher UC luminescent intensity. The pumping powers study showed that UC emissions in Yb3+/Er3+ codoped SrIn2O4 were attributed to energy transfer of Yb3+→Er3+ with a two-photon process. The possible UC luminescent mechanism of Yb3+/Er3+-doped SrIn2O4 was discussed.

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Держатели документа:
China Univ Geosci, Sch Mat Sci & Technol, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Natl Lab Mineral Mat, Beijing 100083, Peoples R China
SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia
Univ Auckland, Dept Chem & Mat Engn, Auckland 1142, New Zealand

Доп.точки доступа:
Guan, Ming; Zheng, Hong; Mei, Lefu; Molokeev, M. S.; Молокеев, Максим Сергеевич; Xie, Jing; Yang, Tao; Wu, Xiaowen; Huang, Saifang; Huang, Zhaohui

/ A. S. Samardak [et al.] // J. Magn. Magn. Mater. - 2015. - Vol. 383. - P. 94-99, DOI 10.1010/j.jmmm.2014.10.047. - Cited References:24. - This work was supported in part by the Russian Ministry of Education and Science and Far Eastern Federal University. M.N acknowledges the student financial support of Iranian Nanotechnology Initiative Council. . - ISSN 0304. - ISSN 1873-4766
   Перевод заглавия: Конверсия магнитной анизотропии в электроосажденных нанонитях сплава CoNiРУБ Materials Science, Multidisciplinary + Physics, Condensed Matter

Аннотация: In this paper, the influence of alternating current (ac) electrodeposition frequency and waveform is reported on chemical composition, microstructure and consequently magnetic properties of Co-Ni binary alloy nanowire arrays embedded in an alumina template. For sinusoidal and square electrodeposition waveforms the easy axis of magnetization rotates from being parallel to perpendicular orientation to nanowire long axis as the deposition frequency increases from 200 to 800 Hz. The reason for the drastic change of magnetic anisotropy in nanowires is attributed to the increase of cobalt content and the crystal structure phase transformation from fcc-hcp mixture at high Ni content to imp at high Co content. We explain the conversion of magnetic behavior of nanowire arrays in terms of a competition between the shape and magnetocrystalline anisotropies. (C) 2014 Elsevier B.V. All rights reserved.

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Держатели документа:
Far Eastern Fed Univ, Sch Nat Sci, Vladivostok, Russia.
Sahand Univ Technol, Fac Mat Engn, Tabriz, Iran.
SB Russian Acad Sci, Inst Phys, Krasnoyarsk, Russia.

Доп.точки доступа:
Samardak, A. S.; Nasirpouri, F.; Nadi, M.; Sukovatitsina, E. V.; Ognev, A. V.; Chebotkevich, L. A.; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Russian Ministry of Education and Science; Far Eastern Federal University; Iranian Nanotechnology Initiative Council

/ M. Guan [et al.] // RSC Adv. - 2015. - Vol. 5, Is. 73. - P. 59403-59407, DOI 10.1039/c5ra08467a. - Cited References:25. - This present work was supported by the National Natural Science Foundations of China (Grant no. 51202226), the Fundamental Research Funds for the Central Universities (Grant no. 2652014125, 2652013128, 2652013043), and the Research Fund for the Doctoral Program of Higher Education of China (Grant no. 20130022110006). . - ISSN 2046-2069
   Перевод заглавия: Структура зависящая от Ca/Sr соотношения и люминесценция с апконверсией в люминофоре (Ca1-xSrx)In2O4: Yb3+/Ho3+РУБ Chemistry, Multidisciplinary

Аннотация: Up-conversion (UC) phosphors of (Ca1-xSrx)In2O4 : Yb3+/Ho3+ (x = 0, 0.1, 0.3, 0.5, 0.7, 0.9, 1.0) were prepared. Based on the crystal structure evolution of these series solid solution samples, which were characterized by Rietveld refinement, the variation of UC luminescent properties was discussed in detail. Sr and Ca occupied one position and Yb/Ho dissolved in the In ion site in the (Ca1-xSrx)In2O4 lattice. With increasing Sr substituting Ca atoms, the cell parameters and cell volumes of these samples increased linearly, and distortions of (Ca/Sr)O-8 polyhedron were formed. The distortions on crystal structures showed a negative relation with UC luminescent intensities in these series phosphors.

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Держатели документа:
China Univ Geosci, Natl Lab Mineral Mat, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Sch Mat Sci & Technol, Beijing 100083, Peoples R China.
SB RAS, LV Kirensky Phys Inst, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.
Univ Auckland, Dept Chem & Mat Engn, Auckland 1142, New Zealand.

Доп.точки доступа:
Guan, Ming; Zheng, Hong; Huang, Zhaohui; Ma, Bin; Molokeev, M. S.; Молокеев, Максим Сергеевич; Huang, Saifang; Mei, Lefu

/ A. G. Anshits [et al.] // Kinet. Catal. - 2015. - Vol. 56, Is. 4. - P. 523-531, DOI 10.1134/S0023158415040023. - Cited References:37. - This work was supported by the Russian Science Foundation (grant no. 14-13-00289). . - ISSN 0023. - ISSN 1608-3210. - РУБ Chemistry, Physical

Аннотация: The catalytic properties of ferrospheres containing 76–97 wt % Fe2O3 in the oxidative condensation of methane were compared with their phase composition and the distribution of iron cations over the crystallographic positions of iron-containing phases in a steady state. It was established that the reaction route of methane oxidation changed at a Fe2O3 content of 89 wt %. Deep oxidation was the main reaction route on ferrospheres with a Fe2O3 content of <88.8 wt %. At a Fe2O3 content of ≥89 wt %, the yield of C2 hydrocarbons sharply increased and the contribution of deep oxidation decreased. The yield of C2 hydrocarbons correlated with the amount of defects in the structure of iron spinel, which are iron ions with the tetrahedral cation of Ca2+ and the octahedral cation vacancy among the nearest neighbors.

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Доп.точки доступа:
Anshits, A. G.; Аншиц, Александр Георгиевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Anshits, N. N.; Pletnev, O. N.; Плетнев, Олег Николаевич; Rabchevskii, E. V.; Vereshchagin, S. N.; Kondratenko, E. V.; Russian Science Foundation [4-13-00289]; Russian Congress on Catalysis (2 ; 2014 ; Oct. ; 2–5 ; Samara)

/ M. Yin [et al.] // RSC Adv. - 2015. - Vol. 5, Is. 89. - P. 73077-73082, DOI 10.1039/c5ra12959a. - Cited References: 43. - The present work was supported by the National Natural Science Foundations of China (Grant No. 51472223), the Fundamental Research Funds for the Central Universities (Grant No. 2652015008), and New Century Excellent Talents in University of Ministry of Education of China (Grant No. NCET-12-0951). . - ISSN 2046-2069
   Перевод заглавия: Синтез, кристаллическая структура и люминесценция с апконверсией Gd2(WO4)3 содопированного Er3+, Yb3+РУБ Chemistry, Multidisciplinary

Аннотация: Up-conversion (UC) phosphors Gd2(WO4)3:Er3+/Yb3+ were synthesized by a high temperature solid-state reaction method. The crystal structure of Gd2(WO4)3:3% Er3+/10% Yb3+ was refined by Rietveld method and it was showed that Er3+/Yb3+ were successfully doped into the host lattice replacing Gd3+. Under 980 nm laser excitation, intense green and weak red emissions centered at around 532 nm, 553 nm, and 669 nm were observed, which were assigned to the Er3+ ion transitions of 4H11/2 → 4I15/2, 4S3/2 → 4I15/2 and 4F9/2 → 4I15/2, respectively. The optimum Er3+ doping concentration was determined as 3 mol% when the Yb3+ concentration was fixed at 10 mol%. The pump power study indicated that the energy transfer from Yb3+ to Er3+ in Er3+, Yb3+ co-doped Gd2(WO4)3 was a two-photon process, and the related UC mechanism of energy transfer was discussed in detail. This journal is © The Royal Society of Chemistry.

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Держатели документа:
School of Materials Science and Technology, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, China University of GeosciencesBeijing, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Yin, Mengyan; Liu, Yangai; Mei, Lefu; Molokeev, M. S.; Молокеев, Максим Сергеевич; Huang, Zhaohui; Fang, Minghao