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Application of DUT-4 MOF structure switching for optical and electrical humidity sensing / A. S. Krylov, S. A. Shipilovskikh, S. N. Krylova [et al.] // Dalton Trans. - 2024. - Vol. 53, Is. 8. - P. 3459-3464, DOI 10.1039/D4DT00038B. - Cited References: 37. - The authors acknowledge the support by the state assignment of the Kirensky Institute of Physics FRC KSC SB RAS, also this work was financially supported by the RFBR (Russian Foundation for Basic Research), project no. 21-52-12018. S. A. S. acknowledges the financial support by the Russian Science Foundation (chemical part, Grant No. 22-73-10069 "Design and application of flexible metal organic frameworks for photonics devices"). V.A.M. acknowledges the Priority 2030 Federal Academic Leadership Program Ivan Sergeev (student in ITMO Univ.) for supporting in IV curve analysis. Raman, FTIR and SEM experiments were performed in the Center for Common Use of the Krasnoyarsk Scientific Center SB RAS (Krasnoyarsk, Russia) . - ISSN 1477-9226. - ISSN 1477-9234
Аннотация: The threshold structural transformation of the DUT-4 metal–organic framework (MOF) from an ordered to distorted phase during exposure to ambient conditions has been revealed. The in situ X-ray diffraction analysis, in situ Raman and FTIR spectroscopy, scanning electron microscopy and synchronous thermal analysis have been used for investigation. The reversible effect of exposure time and humidity on such a phase transition has been confirmed. We also demonstrated that the observed phase transition correlated well with changes in the optical and electronic properties of DUT-4, paving the way to a new family of MOF-based phase change materials for optoelectronic applications.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
ITMO University, St. Petersburg, Russia
Siberian Federal University, Krasnoyarsk, Russia
South Ural State University, Chelyabinsk, Russia
Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, Akademgorodok 50, 660036 Krasnoyarsk, Russia
Institut Jean Lamour, Universite de Lorraine, UMR CNRS 7198, 54011 Nancy, France

Доп.точки доступа:
Krylov, A. S.; Крылов, Александр Сергеевич; Shipilovskikh, S. A.; Krylova, S. N.; Крылова, Светлана Николаевна; Slyusarenko, N. V.; Timofeeva, M.; Kenzhebayeva, Yu. A.; Bachinin, S. V.; Yushina, I. D.; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Shestakov, N. P.; Шестаков, Николай Петрович; Nemtsev, I. V.; Vtyurin, A. N.; Втюрин, Александр Николаевич; Milichko, V. A.
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Caloric characteristics of PbTiO3 in the temperature range of the ferroelectric phase transition / E. A. Mikhaleva [et al.] // Phys. Solid State. - 2012. - Vol. 54, Is. 9. - P. 1832-1840, DOI 10.1134/S1063783412090181. - Cited References: 31. - This study was supported by the Russian Foundation for Basic Research (project no. 12-08-00079) and the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools of the Russian Federation (grant no. NSh-4828.2012.2). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
SINGLE-CRYSTALS
   LEAD TITANATE
   DIELECTRIC PROPERTIES
   SOLID-SOLUTIONS
   PRESSURE
   PEROVSKITES
   DEPENDENCE
   BEHAVIOR
   HEAT
Аннотация: The heat capacity and thermal expansion of the PbTiO3 ceramic sample have been measured in the temperature range 80–970 K. The electrocaloric and barocaloric efficiencies of lead titanate in the ferroelectric phase transition range have been investigated by analyzing the experimental data in terms of the thermodynamic theory of phase transitions, the electrical equation of state P(T, E), the Pippard equation, and the S(T, p) diagram.

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Публикация на русском языке Калорические характеристики PbTiO3 в области сегнетоэлектрического фазового перехода [Текст] / Е. А. Михалева [и др.] // Физ. тверд. тела : Физико-технический институт им. А.Ф.Иоффе РАН, 2012. - Т. 54 Вып. 9. - С. 1719-1726

Держатели документа:
[Mikhaleva, E. A.
Flerov, I. N.
Gorev, M. V.] Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660074, Russia
[Mikhaleva, E. A.
Flerov, I. N.
Gorev, M. V.
Molokeev, M. S.
Cherepakhin, A. V.
Kartashev, A. V.
Mikhashenok, N. V.
Sablina, K. A.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Flerov, I. N.; Флёров, Игорь Николаевич; Gorev, M. V.; Горев, Михаил Васильевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Kartashev, A. V.; Карташев, Андрей Васильевич; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Sablina, K. A.; Саблина, Клара Александровна
}
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Caloric effects and phase transitions in ferroelectric-ferromagnetic composites (x) La0.7Pb0.3MnO3 – (1-x) PbTiO3 / E. Mikhaleva [et al.] // International Conference “Functional materials and nanotechnologies” FM&NT 2012. - 2012. - P. 82

Материалы конференции

Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Kartashev, A. V.; Карташев, Андрей Васильевич; Gorev, M. V.; Горев, Михаил Васильевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Sablina, K. A.; Саблина, Клара Александровна; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Flerov, I. N.; Флёров, Игорь Николаевич; Functional Materials and Nanotechnologies(2012 ; Apr. ; 17-20 ; Riga, Latvia)
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Caloric effects and phase transitions in ferromagnetic-ferroelectric composites xLa(0.7)Pb(0.3)MnO(3)-(1-x)PbTiO3 / E. A. Mikhaleva [et al.] // J. Mater. Res. - 2013. - Vol. 28, Is. 24. - P. 3322-3331, DOI 10.1557/jmr.2013.360. - Cited References: 24. - This study was supported in parts by The Russian Foundation for Basic Research (Grant No. 12-02-31253-mol-a), Federal Special Program "Scientific and scientific-pedagogical staff of innovative Russia" (N 8379), and Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools (Grant NO. NSh-4828.2012.2). Dr. Maxim S. Molokeev is acknowledged for the x-ray characterization of the samples. . - ISSN 0884-2914. - ISSN 2044-5326

РУБ Materials Science
Рубрики:
PRESSURE
TEMPERATURE
Аннотация: Ceramic volumetric composites xLa(0.7)Pb(0.3)MnO(3)-(1-x)PbTiO3 (x = 0.18 and 0.85) were prepared. X-ray investigations have shown that rather low sintering temperature (800 degrees C) has allowed us to avoid the reaction and interdiffusion between two initial phases. Heat capacity, thermal expansion, and intensive magnetocaloric effect were measured in a wide temperature range. The sample composition has a low influence on temperatures of the ferromagnetic and ferroelectric phase transitions in composites. Electro- and barocaloric effects were determined by analysis in the framework of thermodynamic theory, electric equation of state, Maxwell relationships, and entropy-temperature-pressure phase diagram. Multicaloric efficiency of composites is discussed and compared with that of initial La0.7Pb0.3MnO3 and PbTiO3 compounds. Variation of a relationship between components can significantly increase both barocaloric and magnetocaloric efficiency of compositional material due to the mechanical stress appearing between grains of different ferroic phases under magnetic field.

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660079, Russia

Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Flerov, I. N.; Флёров, Игорь Николаевич; Kartashev, A. V.; Карташев, Андрей Васильевич; Gorev, M. V.; Горев, Михаил Васильевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Sablina, K. A.; Саблина, Клара Александровна; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Volkov, N. V.; Волков, Никита Валентинович; Shabanov, A. V.; Шабанов, Александр Васильевич; Russian Foundation for Basic Research [12-02-31253-mol-a]; Federal Special Program "Scientific and scientific-pedagogical staff of innovative Russia" [N 8379]; Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools [NSh-4828.2012.2]
}
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    Core-shell Nanosize Particles Mg@Ni: Synthesis and Properties / G. N. Churilov [et al.] // J. Sib. Fed. Univ. Math. Phys. - 2019. - Vol. 12, Is. 1. - P. 28-35 ; Журнал СФУ. Математика и физика, DOI 10.17516/1997-1397-2019-12-1-28-35. - Cited References: 12 . - ISSN 1997-1397. - ISSN 2313-6022
   Перевод заглавия: Наночастицы Mg@Ni, их получение и свойства

РУБ Mathematics

Кл.слова (ненормированные):
core-shell -- nanopartials -- nickel-magnesium -- synthesis in plasma -- surface coating -- частицы ядро–оболочка -- наночастицы -- никель-магниевые частицы -- плазмохимический синтез -- покрытие поверхности частицы
Аннотация: In this paper, we study particles with metallic core (magnesium) - metal shell (nickel) structure, synthesized in metal-containing plasma of high frequency arc discharge. X-ray diffraction analysis, X-ray fluorescence analysis and scanning electron microscopy show that the particles have a uniform nickel shell, which is also indirectly confirmed by comparing the results of hydrogenation of Mg and Mg@Ni particles. Measurement of volume magnetization indicates that shell thickness of most particles is not more than 22 nm.
В данной работе исследованы частицы со структурой металлическое ядро (магний) - металлическая оболочка (никель), полученные в металлсодержащей высокочастотной плазме дугового разряда. Методами рентгенофазового анализа, рентгенофлуоресцентного анализа, сканирующей электронной микроскопии показано, что частицы имеют сплошную никелевую оболочку, что также косвенно подтверждается сравнением результатов гидрирования частиц Mg и Mg@Ni. С помощью измерений объемной намагниченности установлено, что наибольшая часть частиц имеет толщину оболочек не более 22 нм.

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Держатели документа:
Siberian Fed Univ, Svobodny 79, Krasnoyarsk 660041, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Akademgorodok 50-38, Krasnoyarsk 660036, Russia.
SB RAS, Krasnoyarsk Sci Ctr, Akademgorodok 50, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Churilov, G. N.; Чурилов, Григорий Николаевич; Nikolaev, N. S.; Николаев, Никита Сергеевич; Osipova, I. V.; Осипова, Ирина Владимировна; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Nemtsev, I. V.; Немцев, Иван Васильевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Andyuseva, V. G.; Андюсева, Валентина Г.

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Decoration of carbon nanomaterial powders with dispersed platinum metal particles / V. G. Isakova [et al.] // Russ. J. Appl. Chem. - 2018. - Vol. 91, Is. 7. - P. 1209-1216, DOI 10.1134/S1070427218070212. - Cited References: 22. - The study was performed with the support and equipment of the Center for Shared Use of the Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences. . - ISSN 1070-4272. - ISSN 1608-3296

РУБ Chemistry, Applied
Рубрики:
NANOPARTICLES
   PALLADIUM
   FULLERENE
   ELECTRODE
   NANOTUBES
   OXIDATION
Кл.слова (ненормированные):
carbon nanomaterials -- platinum metal nanoparticles -- in situ one-step method
Аннотация: Carbon nanomaterials (fullerite, detonation nanodiamonds, Taunit, fullerenol, fullerene-containing black) were decorated with platinum group metal nanoparticles in situ in one step by low-temperature combustion (~250–270°С) of a powdered mixture of platinum metal acetylacetonate [Pt-M(асас)n, Pt-М = Pt(II), Pd(II), Rh(III), Ir(III), acac = CH3COCHCOCH3, n is the oxidation state of Pt-М] with carbon nanomaterials in air. As shown by thermal analysis, the process is based on thermal oxidative degradation of the organometallic complex, catalyzed by carbon nanomaterials, with oxidation (combustion) of the organic moiety and release of the metal into the condensed phase. The thermal process in an open system occurs in the glowing mode (210–250°С); the size of the nanoparticles formed is 7–30 nm. Under the conditions restricting the air access to the reaction mixture and free outflow of gaseous products formed by oxidation of acac ligands, the nanoparticle size decreases to 3–10 nm. The particle size depends on the metal amount in the initial powder mixture and on the support morphology.

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Публикация на русском языке Декорирование порошков углеродных наноматериалов дисперсными частицами платиновых металлов [Текст] : статья / В. Г. Исакова [и др.] // Журн. прикл. химии. - 2018. - Т. 91 № 7. - С. 1040-1048

Держатели документа:
Russian Acad Sci, Kirenksy Inst Phys, Separate Dept, Fed Res Ctr,Krasnoyarsk Sci Ctr,Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Fed Res Ctr, Krasnoyarsk Sci Ctr, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Isakova, V. G.; Исакова, Виктория Гавриловна; Osipova, I. V.; Осипова, Ирина Владимировна; Dudnik, A. I.; Дудник, Александр Иванович; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Zharikova, N. V.; Nemtsev, I. V.; Volochaev, M. N.; Center for Shared Use of the Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences
}
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Effect of magnetic impurities on superconductivity in LaH10 / D. V. Semenok, I. A. Troyan, A. V. Sadakov [et al.] // Adv. Mater. - 2022. - Vol. 34, Is. 42. - Ст. 2204038, DOI 10.1002/adma.202204038. - Cited References: 106. - In situ X-ray diffraction experiments at high pressure were performed on SPring-8, station BL10XU, Sayo, Japan (proposal No. 2020A0576). This work was supported by JSPS KAKENHI Grant Number 20H05644. Low-pressure studies were carried out on a synchrotron source of the Kurchatov institute (KISI-Kurchatov), station RKFM. The high-pressure experiments were supported by the Ministry of Science and Higher Education of the Russian Federation within the state assignment of the FSRC Crystallography and Photonics of the RAS. I.A.T. was supported by the Russian Science Foundation, project No. 22-12-00163. A.R.O. thanks the Russian Science Foundation (grant 19-72-30043). D.V.S. thanks the Russian Foundation for Basic Research (project 20-32-90099). I.A.K. thanks the Russian Science Foundation (grant No. 21-73-10261) for the financial support of the anharmonic phonon density of states calculations and molecular dynamics simulations. SEM, XRF, and XRD studies of the initial alloys were performed using the equipment of the Shared Research Center FSRC Crystallography and Photonics of the RAS. I.A.T. and A.G.I. acknowledge the use of the facilities of the Center for Collective Use “Accelerator Center for Neutron Research of the Structure of Substance and Nuclear Medicine” of the INR RAS for high-pressure cell preparation. The research used resources of the LPI Shared Facility Center. V.M.P acknowledge the support of the state assignment of the Ministry of Science and Higher Education of the Russian Federation (Project No. 0023-2019-0005) and A.V.S. and O.A.S. acknowledge the support of the Russian Science Foundation, grant 22-22-00570. K.S.P. thanks the Russian Foundation for Basic Research (project 19-02-00888). I.A.K. thanks the Russian Science Foundation (grant No. 19-73-00237) for the financial support of the development of T-USPEX method and anharmonic phonon density of states calculation algorithm. S.W.T was supported by NSF Cooperative Agreement No. DMR-1157490/1644779 and by the State of Florida. A.D.G. was supported by T.H. and T.F. funding. The authors acknowledge the support of the HLD at HZDR, member of the European Magnetic Field Laboratory (EMFL). The authors also thank Igor Grishin (Skoltech) for proofreading the manuscript, and Dr. C. Tantardini (University of Tromsø) for calculations using the virtual crystal approximation, and Dr. E. Talantsev (IMP RAS) for useful discussions . - ISSN 0935-9648. - ISSN 1521-4095
Кл.слова (ненормированные):
Anderson's theorem -- high pressure -- hydrides -- superconductivity
Аннотация: Polyhydrides are a novel class of superconducting materials with extremely high critical parameters, which is very promising for sensor applications. On the other hand, a complete experimental study of the best so far known superconductor, lanthanum superhydride LaH10, encounters a serious complication because of the large upper critical magnetic field HC2(0), exceeding 120–160 T. It is found that partial replacement of La atoms by magnetic Nd atoms results in significant suppression of superconductivity in LaH10: each at% of Nd causes a decrease in TC by 10–11 K, helping to control the critical parameters of this compound. Strong pulsed magnetic fields up to 68 T are used to study the Hall effect, magnetoresistance, and the magnetic phase diagram of ternary metal polyhydrides for the first time. Surprisingly, (La,Nd)H10 demonstrates completely linear HC2(T) ∝ |T – TC|, which calls into question the applicability of the Werthamer–Helfand–Hohenberg model for polyhydrides. The suppression of superconductivity in LaH10 by magnetic Nd atoms and the robustness of TC with respect to nonmagnetic impurities (e.g., Y, Al, C) under Anderson's theorem gives new experimental evidence of the isotropic (s-wave) character of conventional electron–phonon pairing in lanthanum decahydride.

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Держатели документа:
Materials Discovery Laboratory, Skolkovo Institute of Science and Technology, Bolshoy Boulevard, 30/1, Moscow, 121205, Russian Federation
Shubnikov Institute of Crystallography, Federal Scientific Research Center “Crystallography and Photonics”, Russian Academy of Sciences, 59 Leninsky Prospekt, Moscow, 119333, Russian Federation
V.L. Ginzburg Center for High-Temperature Superconductivity and Quantum Materials, P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow, 119991, Russian Federation
Center for Fundamental and Applied Research, Dukhov Research Institute of Automatics (VNIIA), st. Sushchevskaya, 22, Moscow, 127055, Russian Federation
Laboratory of Computational Materials Discovery, Moscow Institute of Physics and Technology, 9 Institutsky Lane, Dolgoprudny, 141700, Russian Federation
Crystal Physics Laboratory, NRC “Kurchatov Institute” PNPI, 1, mkr. Orlova roshcha, Gatchina, 188300, Russian Federation
Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50, bld. 38, Krasnoyarsk, 660036, Russian Federation
Synchrotron radiation source “KISI-Kurchatov”, National Research Center “Kurchatov Institute”, Moscow, 123182, Russian Federation
Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Dresden, 01328, Germany
National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, United States
Brazilian Synchrotron Light Laboratory (LNLS/Sirius), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, 13083-100, Brazil
KYOKUGEN, Graduate School of Engineering Science, Osaka University, Machikaneyamacho 1-3, Osaka, Toyonaka, 560-8531, Japan
HSE Tikhonov Moscow Institute of Electronics and Mathematics, National Research University Higher School of Economics, 20 Myasnitskaya ulitsa, Moscow, 101000, Russian Federation

Доп.точки доступа:
Semenok, D. V.; Troyan, I. A.; Sadakov, A. V.; Zhou, D.; Galasso, M.; Kvashnin, A. G.; Ivanova, A. G.; Kruglov, I. A.; Bykov, A. A.; Terent'ev, K. Yu.; Терентьев, Константин Юрьевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Sobolevskiy, O. A.; Pervakov, K. S.; Seregin, A. Y.; Helm, T.; Forster, T.; Grockowiak, A. D.; Tozer, S. W.; Nakamoto, Y.; Shimizu, K.; Pudalov, V. M.; Lyubutin, I. S.; Oganov, A. R.
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Efficiency of high energy impact in synthesis of coal-water suspensions / L. V. Kashkina [et al.] // Mater. Today: Proc. - 2018. - Vol. 5, Is. 12, Pt. 3. - P. 26033-26037, DOI 10.1016/j.matpr.2018.08.024. - Cited References: 18 . - ISSN 2214-7853
Кл.слова (ненормированные):
Coal-water slurry -- Cavitation -- Nanocarbon -- Man-made gas emission
Аннотация: A study of thermophysical and ecological properties of highly loaded (50% mass.) coal-water slurry based on Kansk-Achinsk brown coal and distilled water (coal-water slurry fuel – CWSF) with exposure of used water to cavitation-treatment, microwave processing of coal powder, T-900 nanocarbon additions is presented. The study shows that under the conditions of this experiment the thermal physical properties of CWSF are most affected by the use of cavitation-activated water.

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Держатели документа:
Siberian Federal University, Svobodnyy Ave 79, Krasnoyarsk 660049, Russia
Federal Research Center «Krasnoyarsk Research Center (Russian Academy of Sciences, Siberian Branch») L.V. Kirensky Institute of Physics, SB RAS, Akademgorodok 50 bld. 38, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Kashkina, L. V.; Stebeleva, O. P.; Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Carbon: Fundamental Problem, Material Science, Technology - International Conference(11th ; 29 May - 1 June 2018 ; Troitsk, Moscow)
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Frequency doubling of ultrashort pulses in a nonlinear photonic strontium tetraborate crystal / A. M. V'yunyshev [et al.] // Bull. Lebedev Phys. Inst. - 2010. - Vol. 37, Is. 3. - P. 85-86, DOI 10.3103/S106833561003005X. - Cited References: 6 . - ISSN 1068-3356
Кл.слова (ненормированные):
second harmonic generation -- ultrashort pulses -- nonlinear photonic crystal -- Nonlinear photonic crystal -- Second harmonic generation -- Ultrashort pulses
Аннотация: The second harmonic generation (SHG) of the femtosecond titanium-sapphire laser radiation was experimentally studied in the mode of nonlinear diffraction in the nonlinear photonic strontium tetraborate crystal. The spectrum of reciprocal lattice vectors of domain structures includes components responsible for the efficient frequency-tunable SHG in the spectral range of 355-510 nm. The maximum SHG efficiency was 1.9%. The SHG spectrum narrowing does not exceed 10-20%. The measured spectral dependence of the nonlinear diffraction angle is in good agreement with calculation.

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Публикация на русском языке Удвоение частоты ультракоротких импульсов в нелинейном фотонном кристалле тетрабората стронция [Текст] / А. М. Вьюнышев [и др.] // Кратк. сообщ. по физ. / изд. орг. - 2010. - № 3. - С. 35-38

Доп.точки доступа:
V'yunyshev, A. M.; Aleksandrovskii, A. S.; Александровский, Александр Сергеевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Rovskii, V. E.; Zaitsev, A. I.; Зайцев, Александр Иванович; Zamkov, A. V.; Замков, Анатолий Васильевич; All-Russian Youth School Seminar on Innovative Aspects of Basic Research on Urgent Problems of Physics(3 ; 2009 ; Oct. 25-30 ; Moscow)
}
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10.

    Genesis and conformation of polar twin structures in czochralski grown α-SrB4O7 crystals / N. V. Radionov [и др.] // 3 Int. Conf. “Crystallogenesis and mineralogy” : Abstracts Vol. - Новосибирск : Изд-во СО РАН, 2013. - P47-48 . - ISBN 978-5-7692-1320-5
   Перевод заглавия: Происхождение и формирование полярных двойниковых структур в кристаллах α-SrB4O7, выращенных методом Чехральского

Доп.точки доступа:
Radionov, N. V.; Радионов, Никита Вячеславович; Zaitsev, A. I.; Зайцев, Александр Иванович; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Zamkov, A. V.; Замков, Анатолий Васильевич; International Conference on Crystallogenesis and Mineralogy (3 ; Sept. 27 – Oct. 1, 2013 ; Novosibirsk)
}
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11.

Heat capacity and thermodynamic properties of crystalline SrB4O7 / N. V. Moiseev [et al.] // Inorg. Mater. - 2012. - Vol. 48, Is. 5. - P. 504-507, DOI 10.1134/S0020168512050123. - Cited References: 24. - This work was supported in part by the RF President's Grants Council (grant no. NSh-4645.2010.2), the RF Ministry of Education and Science (analytical departmental targeted program Development of the Scientific Potential of Higher Education Institutions, grant no. RNP 2.1.1/10747), Bryansk State University (project no. 1.1.11), and the Physical Sciences Division of the Russian Academy of Sciences (Physics of Advanced Materials and Structures Program, project no. 2.5.2). . - ISSN 0020-1685

РУБ Materials Science, Multidisciplinary
Рубрики:
STRONTIUM TETRABORATE
SINGLE-CRYSTALS
LUMINESCENCE
Аннотация: The heat capacity of a strontium tetraborate (SrB4O7) single crystal has been determined in the temperature range 55-300 K by adiabatic calorimetry, and its Debye characteristic temperature, entropy change, enthalpy increment, and phonon mean free path have been calculated as functions of temperature.

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Публикация на русском языке Теплоемкость и термодинамические свойства кристаллического SrB4O7 [Текст] / Н. В. Моисеев [и др.] // Неорган. матер. - 2012. - Т. 48 № 5. - С. 588-591

Держатели документа:
[Moiseev, N. V.
Popov, P. A.
Solomennik, V. D.] Petrovskii State Univ, Bryansk 241036, Russia
[Zaitsev, A. I.
Cherepakhin, A. V.] Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Moiseev, N. V.; Popov, P. A.; Solomennik, V. D.; Zaitsev, A. I.; Зайцев, Александр Иванович; Cherepakhin, A. V.; Черепахин, Александр Владимирович
}
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12.

Hydrogenation of the Nanopowders That Form in a Carbon-Helium Plasma Stream during the Introduction of Ni and Mg / G. N. Churilov [et al.] // J. Exp. Theor. Phys. - 2011. - Vol. 113, Is. 6. - P. 1057-1062, DOI 10.1134/S1063776111140135. - Cited References: 9. - This work was supported by the Russian Foundation for Basic Research, project no. 09-03-00383-a. . - ISSN 1063-7761

РУБ Physics, Multidisciplinary

Кл.слова (ненормированные):
Carbon atoms -- Composite nanoparticles -- High temperature -- Hydrogen absorption -- Hydrogen atoms -- Island growth -- Magnesium hydride -- Magnesium surface -- Nano powders -- Nickel atoms -- Plasma streams -- Atoms -- Carbon -- Composite materials -- Density functional theory -- Electron beams -- Helium -- Hydrogen -- Hydrogenation -- Nanoparticles -- Nickel -- Scanning electron microscopy -- Thermogravimetric analysis -- X ray photoelectron spectroscopy -- Magnesium
Аннотация: Composite nanoparticles consisting of magnesium, nickel, and carbon atoms are studied both theoretically and experimentally. The calculations performed in terms of the density functional theory show that the jump frequency of hydrogen atoms in nickel-containing magnesium hydride increases substantially near impurity nickel atoms; as a result, the rate of hydrogen absorption by magnesium also increases. Nickel on the magnesium surface is shown to be absorbed via an island growth mechanism. Composite Mg-C, Ni-C, and Mg-Ni-C powders are produced by plasmachemical synthesis in a carbon-helium plasma stream. Hydrogen is introduced into a chamber during synthesis. It is found by X-ray photoelectron spectroscopy and thermogravimetric analysis that, among these three composites, only Mg-Ni-C contains magnesium fixed in the MgH2 compound. The process of such "ultrarapid" hydrogenation of magnesium, which occurs in the time of formation of composite nanoparticles, can be explained by the catalytic action of nickel, which is enhanced by a high temperature. Scanning electron microscopy micrographs demonstrate the dynamics of the dehydrogenation of Mg-Ni-C composite nanoparticles in heating by an electron beam.

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Держатели документа:
[Churilov, G. N.
Osipova, I. V.
Glushchenko, G. A.
Fedorov, A. S.
Popov, Z. I.
Cherepakhin, A. V.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Tomashevich, Ye. V.
Vereshchagin, S. N.
Zhizhaev, A. M.] Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660049, Russia
[Bulina, N. V.] Russian Acad Sci, Siberian Branch, Inst Solid State Chem & Mechanochem, Novosibirsk 630128, Russia
ИФ СО РАН
ИХХТ СО РАН
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, ul. K. Marksa 42, Krasnoyarsk, 660049, Russian Federation
Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences, ul. Kutateladze 18, Novosibirsk, 630128, Russian Federation

Доп.точки доступа:
Churilov, G. N.; Чурилов, Григорий Николаевич; Osipova, I. V.; Осипова, Ирина Владимировна; Tomashevich, Y. V.; Томашевич, Евгений Владимирович; Glushchenko, G. A.; Глущенко, Гарий Анатольевич; Fedorov, A. S.; Федоров, Александр Семенович; Popov, Z. I.; Попов, Захар Иванович; Bulina, N. V.; Булина, Наталья Васильевна; Vereshchagin, S. N.; Zhizhaev, A. M.; Cherepakhin, A. V.; Черепахин, Александр Владимирович
}
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13.

Methods to determine crystal lattice parameters of opal-like structures / I. V. Nemtsev, O. V. Shabanova, I. A. Tambasov [et al.] // J. Struct. Chem. - 2021. - Vol. 62, Is. 4. - P. 641-650, DOI 10.1134/S0022476621040168. - Cited References: 45. - The research was carried out within the state assignment of the Ministry of Science and Higher Education of the Russian Federation (theme No. AAAA-A18-118041990041-8) . - ISSN 0022-4766
Кл.слова (ненормированные):
opal -- colloidal crystal -- stereoregularity -- poly(methyl methacrylate) -- dispersion medium -- photonic crystal structure -- optical spectroscopy -- Bragg diffraction -- electron microscopy
Аннотация: Series of high-quality spherical poly(methyl methacrylate) particles with a polydispersity less than 5% are prepared by chain-growth emulsifier-free controlled radical emulsion polymerization of methyl methacrylate in water. The average diameters in the series varied from 237 nm to 447 nm. The physico-chemical properties of obtained submicrospheres can be varied to make them more stable and stronger by a modified classical synthesis technology whereby 4-10 vol.% of dispersion medium is replaced by acetone. 2D and 3D photonic crystal structures, opals, are prepared from poly(methyl methacrylate) submicrospheres. The crystal structure of the opals is studied by IR spectroscopy and scanning electron microscopy. According to the spectroscopic data, the poly(methyl methacrylate) particles contain significant amounts of water whose evaporation leads to the shrinkage of the spheres. The stereoregularity of the synthesized polymer is studied, the glass-transition temperatures of obtained samples are determined.

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Публикация на русском языке Методы определения параметров кристаллической решетки опалоподобных структур [Текст] / И. В. Немцев, О. В. Шабанова, И. А. Тамбасов [и др.] // Журн. структ. химии. - 2021. - Т. 62 № 4. - С. 684-693

Держатели документа:
Federal Research Center, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Federal Research Center, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Special Designing and Technological Bureau “Nauka” Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Nemtsev, I. V.; Немцев, Иван Васильевич; Shabanova, O. V.; Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Ivanenko, A. A.; Иваненко, Александр Анатольевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Shestakov, N. P.; Шестаков, Николай Петрович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич
}
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14.

    Morphology of a polar twin structure in Czochralski grown α-SrB4O7 crystals / A. I. Zaitsev [et al.] // 17th Int. Conf. on Crystal Growth and Epitaxy (ICCGE-17) : Book of Abstracts. - 2013. - P. 444-445
   Перевод заглавия: Морфология полярных двойниковых структур в кристаллах α-SrB4O7 выращенных методом Чехральского

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Доп.точки доступа:
Zaitsev, A. I.; Зайцев, Александр Иванович; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Radionov, N. V.; Радионов, Никита Вячеславович; Zamkov, A. V.; Замков, Анатолий Васильевич; International Conference on Crystal Growth and Epitaxy (17 ; 2013 ; Aug. ; 11-16 ; Warsaw, Poland)
}
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15.

Morphology of the polar twin structure in Czochralski grown α-SrB4O7 crystals / A. I. Zaitsev [et al.] // J. Cryst. Growth. - 2015. - Vol. 416. - P. 17-20, DOI 10.1016/j.jcrysgro.2015.01.004. - Cited References:15. - This study is supported by Grant of the President of the Russian Federation for the support of leading scientific schools SS-924.2014.2. . - ISSN 0022. - ISSN 1873-5002. -

РУБ Crystallography + Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
TETRABORATE
STRONTIUM
SRB4O7
Кл.слова (ненормированные):
Optical microscopy -- Czochralski method -- Borates -- Growth twins -- Nonlinear -- optic materials
Аннотация: The arrangement of a polar twin structure in Czochralski grown α-SrB4O7 crystals has been investigated. The transversal twin boundaries are stretched along [ 1 0 1 ] and [ 1 0 0 ] directions. The lateral twin boundaries are parallel to ( 0 1 0 ) plane. The twin structures have an extension up to centimeter size in all directions. Supposedly, they originate from polysynthetic polar microtwins revealed to form in ( 1 0 1 ¯ ) and ( 1 ¯ 0 1 ¯ ) growth pyramids. The dimensions, planarity and thickness stability of each individual twin are favorable for organizing quasi-phase matching conditions for nonlinear optical doubling of high-aperture beams.

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Держатели документа:
SB RAS, LV Kirensky Inst Phys, Akademgorodok 660036, Krasnoyarsk, Russia.
Siberian Fed Univ, Svobodny Prospect, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Zaitsev, A. I.; Зайцев, Александр Иванович; Radionov, N. V.; Радионов, Никита Вячеславович; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Zamkov, A. V.; Замков, Анатолий Васильевич; Grant of the President of the Russian Federation for the support of leading scientific schools [SS-924.2014.2]
}
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16.

Morphology stability of polymethylmethacrylate nanospheres formed in water-acetone dispersion medium / I. V. Nemtsev [et al.] // Appl. Phys. A. - 2019. - Vol. 125, Is. 10. - Ст. 738, DOI 10.1007/s00339-019-3036-4. - Cited References: 93 . - ISSN 0947-8396. - ISSN 1432-0630

РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
OPAL PHOTONIC CRYSTALS
POLY(METHYL METHACRYLATE)
UP-CONVERSION
Аннотация: The aim of this study is to develop a manufacturing technique of polymethylmethacrylate (PMMA) nanospheres to produce a more stable opal template. Water-acetone mixture was used as a dispersion medium to synthesize a PMMA opal structure. Morphology features, IR vibrational spectra and glass transition temperatures of the PMMA nanospheres formed in the water-acetone dispersion medium (nanospheres A) have been studied comparing with the same prepared in distilled water solution without acetone (nanospheres B). A dependence of a shrinkage degree of the nanoparticles on the acetone volume has been investigated. It has been revealed that under an electron beam action the shrinkage degree of the nanospheres A is in the range of 7-16% while the shrinkage of the nanospheres B is 18-25% at the same conditions. The nanospheres A are less flexible and soft as compared to the nanospheres B. Additionally, an ability of the PMMA nanoparticles fabricated in the water-acetone dispersion medium to form the ordered opal structures is demonstrated to be the similar to the nanospheres B.

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Держатели документа:
Russian Acad Sci, Fed Res Ctr, Krasnoyarsk Sci Ctr, Siberian Branch, 50 Akademgorodok, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, 50 Akademgorodok,12 Str, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, 79 Svobodny Pr, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Special Designing & Technol Bur, Nauka Krasnoyarsk Sci Ctr, Siberian Branch, 50 Akademgorodok,45 Str, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Nemtsev, I. V.; Немцев, Иван Васильевич; Shabanova, Olga V.; Shestakov, N. P.; Шестаков, Николай Петрович; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич
}
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17.

Nonlinear photonic crystals of strontium tetraborate: Properties and conversion of radiation / A. S. Aleksandrovsky [et al.] // Proceedings of SPIE - The International Society for Optical Engineering. - 2010. - Vol. 7728: Nonlinear Optics and Applications IV (12 April 2010 through 15 April 2010, Brussels, ) Conference code: 81010, DOI 10.1117/12.853713 . - ISBN 0277786X (ISSN); 9780819482013 (ISBN)
Кл.слова (ненормированные):
nonlinear photonic crystal -- second harmonic generation -- strontium tetraborate -- As-grown -- Average power -- Domain shape -- Efficiency enhancement -- Femtoseconds -- Fourth harmonics -- Nonlinear diffraction -- Nonlinear optical process -- Nonlinear photonic crystals -- Quasi-phase-matched -- Second harmonic generation -- Tetraborate -- Ti: Sapphire laser -- Ti:sapphire oscillators -- Ferroelectricity -- Harmonic analysis -- Nonlinear optics -- Optical materials -- Photonic crystals -- Sapphire -- Strontium -- Harmonic generation
Аннотация: Random nonlinear photonic crystal (NPC) structures formed by as-grown domains in a non-ferroelectric strontium tetraborate (SBO) are investigated. The domain shape and orientation are similar to those in ferroelectric KTP. Nonlinear diffraction is the simplest way to detect, evaluate and characterize these structures. Reciprocal superlattice vectors spectra of NPC in SBO are very wide and enable broadband efficiency enhancement of nonlinear optical processes. Second harmonic (SH) generation of femtosecond Ti:sapphire oscillator radiation with 1.9% efficiency is obtained using nonlinear diffraction geometry. Random quasi phase matched generation at the wavelengths of fourth harmonic of Ti:sapphire laser is obtained with average power up to 1 ?W. © 2010 Copyright SPIE - The International Society for Optical Engineering.

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Держатели документа:
Kirensky Institute of Physics, Akademgorodok 50/38, 660036, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodniy 79, 660041, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Aleksandrovsky, A. S.; Zaitsev, A. I.; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Vyunishev, A. M.; Rovsky, V. E.; Slabko, V. V.
}
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18.

Optical and nonlinear optical properties of orthorhombic BiB3O6 / A. V. Cherepakhin [et al.] // Opt. Mater. - 2012. - Vol. 34, Is. 5. - P. 790-792, DOI 10.1016/j.optmat.2011.11.004. - Cited References: 13. - The work was supported by Ministry of Education and Science of Russian Federation (Contract 16.740.11.0150), Grant of President of Russian Federation for support of leading scientific schools No. SS-4645.2010.2, Grant No. RNP.2.1.1.3455, Project 3.9.1 of PSB RAS, and Projects No. 27.1 and No. 5 of SB RAS. . - ISSN 0925-3467

РУБ Materials Science, Multidisciplinary + Optics
Рубрики:
BISMUTH BORATE BIB3O6
   CRYSTAL
   LASER
   GENERATION
   GROWTH
   BIBO
Кл.слова (ненормированные):
Orthorhombic bismuth triborate delta-BiBO -- Refractive indices -- Nonlinear optical coefficients -- Nonlinear optical materials -- Phase matching
Аннотация: Dispersion of refraction coefficients of orthorhombic BiB3O6 in the wavelength range between 435.8 and 1060 nm is studied, nonlinear optical coefficients are determined, and phase matching angles, angular and spectral bandwidths for second harmonic generation processes are calculated. delta-BiBO may be suitable for doubling of lasers with a wavelength in the 1.3 mu m region as well as the matrix for self-doubling lasing media. (C) 2011 Elsevier B.V. All rights reserved.

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

Доп.точки доступа:
Cherepakhin, A. V.; Черепахин, Александр Владимирович; Zaitsev, A. I.; Зайцев, Александр Иванович; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Zamkov, A. V.; Замков, Анатолий Васильевич
}
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19.

    Cherepakhin, A. V.
    Optical and nonlinear optical properties of α-SrB4O7 / A. V. Cherepakhin, A. I. Zaitsev, A. V. Zamkov // 3 Int. Conf. “Crystallogenesis and mineralogy” : Abstracts Vol. - Новосибирск : Изд-во СО РАН, 2013. - P71-72 . - ISBN 978-5-7692-1320-5
   Перевод заглавия: Оптические и нелинейнооптические свойства α-SrB4O7

Доп.точки доступа:
Zaitsev, A. I.; Зайцев, Александр Иванович; Zamkov, A. V.; Замков, Анатолий Васильевич; Черепахин, Александр Владимирович; International Conference on Crystallogenesis and Mineralogy (3 ; Sept. 27 – Oct. 1, 2013 ; Novosibirsk)
}
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20.

    Optical birefringence of β-SrB4O7 crystals with strontium substitutions / A. I. Zaitsev [et al.] // 17th Int. Conf. on Crystal Growth and Epitaxy (ICCGE-17) : Book of Abstracts. - 2013. - P. 464-465
   Перевод заглавия: Оптическое двупреломление в кристаллах β-SrB4O7 с замещением стронция

Материалы конференции

Доп.точки доступа:
Zaitsev, A. I.; Зайцев, Александр Иванович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Radionov, N. V.; Радионов, Никита Вячеславович; Zamkov, A. V.; Замков, Анатолий Васильевич; International Conference on Crystal Growth and Epitaxy (17 ; 2013 ; Aug. ; 11-16 ; Warsaw, Poland)
}
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