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    The influence of magnetic field on the rate of cathode erosion at vacuum arc spraying / I. V. Karpov [et al.] // IOP Conf. Ser.: Mater. Sci. Eng. - 2017. - Vol. 255, Is. 1. - Ст. 012007, DOI 10.1088/1757-899X/255/1/012007. - Cited References: 27
   Перевод заглавия: Влияние магнитного поля на скорость эрозии катода при дуговом распылении в вакууме
Кл.слова (ненормированные):
Cathodes -- Copper compounds -- Electrodes -- Magnetic fields -- Magnetism -- Metals -- Vacuum applications -- Vacuum technology -- Cathode erosion -- Influence of magnetic field -- Metal oxides -- Nano powders -- Particular condition -- Vacuum arcs -- Magnetoplasma
Аннотация: The influence of the magnetic field in the cathode space on the synthesis of metal oxide nanopowders by vacuum-arc spraying was studied. It was found that, depending on the geometry of the magnetic field and the pressure of gaseous medium in plasma-chemical reactor, particular conditions which enhance the efficiency of CuO synthesis, appear.

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Доп.точки доступа:
Karpov, I. V.; Ushakov, A. V.; Lepeshev, A. A.; Лепешев, Анатолий Александрович; Fedorov, L. Y.; Dorozhkina, E. A.; Karpova, O. N.; Shaikhadinov, A. A.; Demin, V. G.; Bachurina, E. P.; Lichargin, D. V.; Abkaryan, A. K.; Zeer, G. M.; Зеер Г.М.; Zharkov, S. M.; Жарков, Сергей Михайлович; International Scientific Conference Reshetnev Readings(20 ; 2016 ; Nov. 9-12 ; Krasnoyarsk)
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Boldyrev, K. N.
The electronic and magnetic structures of manganese doped copper metaborate Cu0.98Mn0.02B2O4 / K. N. Boldyrev, A. D. Molchanova, E. M. Moshkina // Moscow International Symposium on Magnetism (MISM-2017) : 1-7 July 2017 : book of abstracts. - 2017. - Ст. 4OR-O-11. - P. 752

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Доп.точки доступа:
Molchanova, A. D.; Moshkina, E. M.; Мошкина, Евгения Михайловна; Болдырев, Кирилл Николаевич; Moscow International Symposium on Magnetism(7 ; 2017 ; Jul. ; Moscow); Московский государственный университет им. М.В. Ломоносова; Российский фонд фундаментальных исследований
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The competition between magnetocrystalline and shape anisotropy on the magnetic and magneto-transport properties of crystallographically aligned CuCr2Se4 thin films / I. Edelman [et al.] // J. Magn. Magn. Mater. - 2017. - Vol. 443. - P. 107-115, DOI 10.1016/j.jmmm.2017.07.022. - Cited References: 35. - The work was supported partly by the Grant of the President of the Russian Federation no. NSh-7559.2016.2. M.E. and D.C.J. acknowledge support from the National Science Foundation under grant DMR-1266217. . - ISSN 0304-8853
Кл.слова (ненормированные):
Copper selenide -- CuCr2Se4 films -- Magnetic anisotropy -- Trasnverse kerr effect -- Magnetic resonance -- Magnetoresistance
Аннотация: Crystallographically aligned nanocrystalline films of the ferromagnetic spinel CuCr2Se4 were successfully synthesized and their structure and alignment were confirmed by X-ray diffraction and high-resolution transmission electron microscopy. The average size of the crystallites is about 200–250 nm, and their (1 1 1) crystal planes are parallel to the film plane. A good match of the film’s electronic structure to that of bulk CuCr2Se4 is confirmed by transverse Kerr effect measurements. Four easy 〈1 1 1〉 axes are present in the films. One of these axes is oriented perpendicular and three others are oriented at an angle of 19.5° relative to the film plane. The magnetic properties of the films are determined by a competition between the out-of-plane magnetocrystalline anisotropy and the in-plane shape anisotropy. Magnetic measurements show that the dominating type of anisotropy switches from shape to magnetocrystalline anisotropy near 160 K, which leads to a switch of the effective easy axis from inside the film plane at room temperature to perpendicular to the film plane as the temperature decreases. At last, a moderately large, negative value of the low-temperature magnetoresistance was observed for the first time in CuCr2Se4 films.

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Держатели документа:
Kirensky Institute of Physics, FRC KSC RAS, Krasnoyarsk, Russian Federation
Department of Chemistry, University of Oregon, Eugene, OR, United States
Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Chemistry and Chemical Technology FRC “KSC SB RAS”, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Esters, M.; Johnson, D. C.; Yurkin, G. Yu.; Юркин, Глеб Юрьевич; Tarasov, A. S.; Тарасов, Антон Сергеевич; Rautsky, M. V.; Рауцкий, Михаил Владимирович; Volochaev, M. N.; Волочаев, Михаил Николаевич; Lyashchenko, S. A.; Лященко, Сергей Александрович; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Petrov, D. A.; Петров, Дмитрий Анатольевич; Solovyov, L. A.
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    CsCu5Se3: a copper-rich ternary chalcogenide semiconductor with nearly direct band gap for photovoltaic application / Z. Xia [et al.] // Chem. Mater. - 2018. - Vol. 30, Is. 3. - P. 1121-1126, DOI 10.1021/acs.chemmater.7b05104. - Cited References: 35. - The present work was supported by the National Natural Science Foundation of China (Grants 51722202, 91622125, 51572023, 51672023, 11774239, and U1530401), and Natural Science Foundation of Beijing (Grant 2172036). K.R.P. recognizes that this work was made possible by support from the National Science Foundation (Awards DMR-1608218 and DMR-1307698). X.Z. and S.H.W. acknowledge the support from National Key R&D Program of China (Grant 2016YFB0700700). . - ISSN 0897-4756
   Перевод заглавия: CsCu5Se3: богатый медью тройной халькогенидный полупроводник с почти прямой полосой пропускания для фотовольтаического применения
Кл.слова (ненормированные):
Sulfur compounds
Аннотация: Discovery of new semiconductor candidates with suitable band gaps is a challenge for optoelectronic application. A facile solvothermal synthesis of a new ternary chalcogenide semiconductor CsCu5Se3 is reported. The telluride CsCu5Te3 is also predicted to be stable. CsCu5Se3 is isostructural with CsCu5S3 (space group Pmma). The band gap calculations of these chalcogenide semiconductors using hybrid density functional theory indicate nearly direct band gaps, and their values (about 1.4 eV) were confirmed by the optical absorption spectroscopy. These alkali metal copper chalcogenides are interesting examples of copper-rich structures which are commonly associated with favorable photovoltaic application.

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Держатели документа:
Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing, China
Department of Chemistry, Tsinghua University, Beijing, China
College of Electronic Science and Technology, Shenzhen University, Guangdong, China
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Institut des Materiaux Jean Rouxel (IMN), Universite de Nantes, CNRS, 2 rue de la Houssiniere, Nantes, Cedex, France
Beijing Computational Science Research Center, Beijing, China
Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL, United States

Доп.точки доступа:
Xia, Z.; Fang, H.; Zhang, X.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Gautier, R.; Yan, Q.; Wei, S. -H.; Poeppelmeier, K. R.
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A comparative study of the structure of copper and lead xanthates / S. A. Vorobyev [et al.] // J. Struct. Chem. - 2017. - Vol. 58, Is. 6. - P. 1144-1151, DOI 10.1134/S0022476617060117. - Cited References: 38 . - ISSN 0022-4766
Кл.слова (ненормированные):
copper xanthate -- lead xanthate -- dixanthogen -- structure -- XPS -- EXAFS -- solid state NMR
Аннотация: XPS, PbL3 and CuK EXAFS, solid state NMR, and EPR techniques are used to study insoluble products formed in the interaction of aqueous solutions of lead(II) nitrate and copper (II) sulfate with potassium nbutylxanthate (KX). The XPS spectra of lead xanthates with the composition PbX2 are similar to those of KX, and interatomic distances of 0.279 nm suggest a nearly ionic character of Pb–S bonds. In copper xanthate precipitating together with dixanthogen (approximately 15 wt.%), the Cu(I)–S bond length is smaller (0.229 nm), and copper coordination number of 2.9 in a composite with dixanthogen increases to 3.3 after its removal by washing with acetone. The XPS spectra indicate the covalent character of the bond and non-equivalence of xanthate radicals. Solid state 1H and 13C NMR spectra as well as the actual absence of metal lines under the measurement conditions demonstrate strong disordering of the structure of xanthates, which is stronger for PbX2 and weakest in CuX after the removal of dixanthogen. EPR reveals sulfur-containing radicals and Cu2+ in CuX, however, their amounts are insignificant and decrease after the washing with acetone. The results of the work are significant for the understanding of the reactivity of xanthates, in particular, under the conditions of flotation of base metal ores.

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Публикация на русском языке Сравнительное исследование структуры ксантогенатов меди и свинца [Текст] / C. А. Воробьев [и др.] // Журн. структ. химии. - 2017. - Т. 58 № 6. - С. 1191-1198

Держатели документа:
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russian Federation
Kirensky Insitute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Vorobyev, S. A.; Saikova, S. V.; Erenburg, S. B.; Trubina, S. V.; Ivanov, Y. N.; Иванов, Юрий Николаевич; Maksimov, N. G.; Mikhlin, Y. L.
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    Magnetic phase transitions and linear magnetic dichroism in manganese-doped copper metaborate (Cu,Mn)B2O4 / A. D. Molchanova [et al.] // J. of Phys.: Conf. Ser. : IOP, 2017. - Vol. 917. - Ст. 072003DOI 10.1088/1742-6596/917/7/072003. - Cited References: 10. - This work was supported by the Russian Foundation for Basic Research (Grant No 15-02-07451a) and the President of the Russian Federation (Grant МК-3577.2017.2)
   Перевод заглавия: Магнитные фазовые переходы и линейный магнитный дихроизм в допированном марганцем метаборате меди (Cu,Mn)B2O4
Аннотация: The work presents a study of manganese-doped copper metaborate (Cu,Mn)B2O4 using optical spectroscopy. The temperature of the antiferromagnetic phase transition TN = 19 K has been defined according to the absorption spectra. Polarization studies (Cu,Mn)B2O4 in isotropic ab-plane show the presence of linear antiferromagnetic dichroism in the magnetically ordered state previously observed in pure copper metaborate CuB2O4.This measurement allows to find the magnetic phase transition into an elliptical structure at the temperature T* = 7.0 K.

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Доп.точки доступа:
Molchanova, A. D.; Boldyrev, K. N.; Erofeev, A. S.; Moshkina, E. M.; Мошкина, Евгения Михайловна; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; International School and Conference on Optoelectronics, Photonics, Engineering and Nanostructures(4 ; 2017 ; 3-6 Apr. ; Saint Petersburg)
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    Effects of electron-phonon interaction in strongly correlated copper oxides systems within alternative versions of generalized tight-binding method / E. I. Shneyder [et al.] // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. O2.1. - P. 135. - References: 3. - Authors are thankful to Russian Science Foundation (project No. 14-12-00061) for financial support . - ISBN 978-5-904603-06-9
   Перевод заглавия: Эффекты электрон-фононного взаимодействия в медных оксидах с сильными электронными корреляциями в рамках альтернативных версий обобщенного метода сильной связи
Кл.слова (ненормированные):
electron-phonon interaction -- strongly correlated electron systems

Доп.точки доступа:
Shneyder, E. I.; Шнейдер, Елена Игоревна; Makarov, I. A.; Макаров, Илья Анатольевич; Zotova, M. V.; Зотова, Мария Владимировна; Nikolaev, S. V.; Николаев, Сергей Викторович; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН

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OVCHINNIKOV, S. G.
EFFECT OF ORTHORHOMBIC ILISTORTIONS ON THE X-RAY AND X-RAY ELECTRON-SPECTRA OF COPPER OXIDES / S. G. OVCHINNIKOV // Fiz. Tverd. Tela. - 1993. - Vol. 35, Is. 3. - P. 617-623. - Cited References: 9 . - ISSN 0367-3294

РУБ Physics, Condensed Matter
Рубрики:
HIGH-TC
HOLES

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OVCHINNIKOV, S. G.
DENSITY OF SINGLE-PARTICLE STATES IN STRONGLY CORRELATED ELECTRON-SYSTEMS IN COPPER OXIDES / S. G. OVCHINNIKOV // Zhurnal Eksperimentalnoi Teor. Fiz. - 1993. - Vol. 104, Is. 5. - P. 3719-3734. - Cited References: 24 . - ISSN 0044-4510

РУБ Physics, Multidisciplinary
Рубрики:
DYNAMIC PROPERTIES
   BAND
   SPECTRA
   MODEL

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10.

Valkov, V. V.
Generalized Kondo lattice model and its spin-polaron realization by the projection method for cuprates / V. V. Valkov, D. M. Dzebisashvili, A. F. Barabanov // Theor. Math. Phys. - 2017. - Vol. 191, Is. 2. - P. 752-763, DOI 10.1134/S0040577917050142. - Cited References:35. - This research was supported by the Russian Foundation for Basic Research (Grant No. 16-02-00073, 16-02-00304, and 16-42-240435) and the Siberian Branch of the Russian Academy of Sciences (Complex Program No. II.2P, Grant No. 0358-2015-0005). . - ISSN 0040-5779. - ISSN 1573-9333

РУБ Physics, Multidisciplinary + Physics, Mathematical
Рубрики:
HIGH-TEMPERATURE SUPERCONDUCTIVITY
HIGH-TC SUPERCONDUCTORS
COPPER OXIDES
Кл.слова (ненормированные):
strong electron correlation -- spin-fermion model -- Kondo lattice model -- spin polaron
Аннотация: The spin-fermion model, which is an effective low-energy realization of the three-band Emery model after passing to the Wannier representation for the px and py orbitals of the subsystem of oxygen ions, reduces to the generalized Kondo lattice model. A specific feature of this model is the existence of spin-correlated hoppings of the current carriers between distant cells. Numerical calculations of the spectrum of spin-electron excitations highlight the important role of the long-range spin-correlated hoppings.

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Держатели документа:
RAS, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk, Russia.
Reshetnyov Siberian State Aerosp Univ, Krasnoyarsk, Russia.
RAS, Inst High Pressure Phys, Troitsk, Moscow Oblast, Russia.

Доп.точки доступа:
Dzebisashvili, D. M.; Дзебисашвили, Дмитрий Михайлович; Barabanov, A. F.; Вальков, Валерий Владимирович; Russian Foundation for Basic Research [16-02-00073, 16-02-00304, 16-42-240435]; Siberian Branch of the Russian Academy of Sciences (Complex Program) [II.2P, 0358-2015-0005]
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11.

Plasma-chemical synthesis of copper oxide nanoparticles in a low-pressure arc discharge / A. V. Uschakov [et al.] // Vacuum. - 2016. - Vol. 133. - P. 25-30, DOI 10.1016/j.vacuum.2016.08.007. - Cited References:36. - The work was performed with a support of the grant of the Russian Science Foundation (Project No. 16-19-10054) . - ISSN 0042-207X

РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
VACUUM-ARC
   PLASMACHEMICAL SYNTHESIS
   THIN-FILM
   DEPOSITION
Кл.слова (ненормированные):
Copper oxide nanoparticles -- Low pressure arc discharge -- Plasma-chemical synthesis -- Paschen curve -- Similarity parameter
Аннотация: The influence of a pressure of gas mixture (10 vol% O2 + 90% N2) on an average size of copper oxide nanoparticles, produced in the plasma of low pressure arc discharge, has been studied as a basic process variable. A correlation between the dependence of average particle size on gas mixture pressure and the dependence of discharge gap voltage on product of interelectrode distance by a gas mixture pressure, has been found. The estimation was carried out by means of X-ray diffraction (XRD) and high-resolution transmission electron microscopy (HRTEM). A mathematical model of the cathode region, which shows the applicability of the similarity theory to the low pressure arc discharge, has been represented.

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

Доп.точки доступа:
Uschakov, A. V.; Karpov, I. V.; Lepeshev, A. A.; Petrov, M. I.; Петров, Михаил Иванович; Russian Science Foundation [16-19-10054]
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12.

Investigation of manganese-doped copper metaborate Cu1-xMnxB2O4 by linear antiferromagnetic dichroism / A. D. Molchanova [et al.] // Магнитные материалы. Новые технологии : тез. докл. VII Байкал. Междунар. конф. / Иркутский гос. ун-т. - Иркутск, 2016. - P. 166. - Библиогр.: 4 назв. - This work was supported by the Russian Foundation for Basic Research (Grant No 15-02-07451a) and the President of the Russian Federation (Grant No MK-3521-2015.2) . - ISBN 978-591-345-152-1. - ISBN 978-591-345-152-1

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Доп.точки доступа:
Исхаков, Рауф Садыкович \чл. прогр. ком.\; Iskhakov, R. S.; Аплеснин, Сергей Степанович \чл. прогр. ком.\; Aplesnin, S. S.; Овчинников, Сергей Геннадьевич \чл. прогр. ком.\; Ovchinnikov, S. G.; Molchanova, A. D.; Boldyrev, K. N.; Болдырев, Кирилл Николаевич; Moshkina, E. M.; Мошкина, Евгения Михайловна; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; "Магнитные материалы. Новые технологии", Байкальская международная конференция(7 ; 2016 ; авг. ; 22-26 ; Листвянка, пос. (Иркутская обл.)); "Magnetic materials. New tecnologies", Baikal International Conference(7 ; 2016 ; Aug. ; 22-26 ; Listvyanka, Irkutsk region); Байкальская международная конференция "Магнитные материалы. Новые технологии"(7 ; 2016 ; авг. ; 22-26 ; п. Листвянка, Иркутская обл.); Иркутский государственный университет
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13.

    Transparent heaters based on the copper micromesh passivated by graf(ph)ene oxide / A. S. Voronin [et al.] // Sib. J. Science and Technology. - 2018. - Vol. 19, Is. 4. - P. 660-667 ; Сибирский журнал науки и технологий, DOI 10.31772/2587-6066-2018-19-4-660-667. - Библиогр.: 19 . - ISSN 1816-9724
   Перевод заглавия: Прозрачные нагревательные элементы на основе медной микросетки, пассивированной оксидом графена
Аннотация: The paper presents the results of creating and researching the transparent heaters with enhanced performance characteristics. The heaters are based on a composite coating of a new type by contrast with classical solutions based on transparent conductive oxide films. Such a composite coating is copper micromesh obtained using a self-organized template, stabilized by a thin film of graphene oxide (GO). The micromesh coating is formed by magnetron sputtering of copper onto a template obtained as a result of self-organized cracking of a silica film. Then, a graphene oxide film protecting the micromesh coating from thermal and chemical degradation is applied to the micromesh coating by the spray-method. A composite coating with the surface resistance of 8.9 Ohm/sq is obtained with the transparency of 82.8 % at the wavelength of 550 nm. High uniformity of heating and stability of the composite coating are shown when operating under heating up to 97.2 °C for a long time (24 hours). The composite coating of the GO / Cu micro- mesh on a glass substrate 2 mm thick is characterized by the thermal resistance value of 134.2 °C·cm2·W-1, while the ITO literature sample on an equivalent substrate is characterized by the thermal resistance of 94.04 °C·cm2·W-1, which indicates higher heating efficiency at the same specific power dissipation. This fact opens up prospects for its use as an anti-icing coating in aerospace industry.

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Доп.точки доступа:
Voronin, A. S.; Fadeev, Yu. V.; Ivanchenko, F. S.; Nemtsev, I. V.; Khartov, S. V.

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14.

    Magnetic properties of copper-based ludwigites / T. Gavrilova [и др.] // Internnational conference "Spin physics, spin chemistry, and spin technology" : Book of abstracts. - Novosibirsk, 2018. - P. 94. - Cited References: 1. - This work was supported by the RFBR no 17-02-00953
   Перевод заглавия: Магнитные свойства медь-содержащих людвигитов

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Доп.точки доступа:
Gavrilova, T.; Moshkina, E. M.; Мошкина, Евгения Михайловна; Gilmutdinov, I. F.; Kiiamov, Airat ; Yatsyk, Ivan; Eremina, R. M.; "Spin physics, spin chemistry, and spin technology", Internnational conference(3 ; 2018 ; Sept. ; 10-15 ; Novosibirsk); Институт органической химии им. Н.Н. Ворожцова Сибирского отделения РАН; Институт физики полупроводников им. А.В. Ржанова Сибирского отделения РАН; Институт химической кинетики и горения им. В.В. Воеводского Сибирского отделения РАН; Международный томографический центр Сибирского отделения РАН; Новосибирский государственный университет
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15.

    Crystal structures of [Cu2(2,2′-bipyridine-N,N′)2(H2O)2(μ2-OH)2](barbiturate)2·2H2O and [Cu(2,2′-bipyridine-N,N′)(H2O)(barbiturate-O)Cl]·2H2O / N. N. Golovnev [et al.] // Inorg. Chem. Commun. - 2018. - Vol. 97. - P. 88-92, DOI 10.1016/j.inoche.2018.09.011. - Cited References: 32 . - ISSN 1387-7003
   Перевод заглавия: Кристаллические структуры Cu2(2,2'-бипиридин-N,N')2(H2O)2(mu2-OH)2](барбитурат)2·2H2O и [Cu(2,2'-бипиридин-N,N')(H2O)(барбитурат-O)Cl]·2H2O.
Кл.слова (ненормированные):
Copper(II) -- Barbituric acid -- 2,2′-Bipyridine -- X-ray diffraction -- Thermal stability
Аннотация: Two mixed-ligand Cu(II) complexes [Cu2(Bipy)2(H2O)2(OH)2](Hba)2·2H2O (1) and [Cu(Bipy)(H2O)(Hba)Cl]·2H2O (2) (Bipy = 2,2′-bipyridine and Hba− = barbiturate anion) were synthesized and structurally characterized by single crystal X-ray diffraction. In 1, structural data revealed distorted square-pyramidal geometry for each of two crystallographic independent copper(II) atom with the basal plane formed by two nitrogen atoms of the 2,2′-bipyridine ligand and two oxygen atoms of bridging hydroxo groups. The apical positions are filled by the oxygen atoms from a water molecule. In 2, the Cu atom is also in distorted square pyramidal geometry, where the equatorial sites are occupied by two N atoms of one Bipy ligand, one O atom of the barbiturate ion and one chloride ion and the apical position by one aqua ligand. Numerous intermolecular hydrogen bonds O–H⋯O, N–H⋯O, C–H⋯O in the structures 1–2 and in addition O–H⋯Cl, C–H⋯Cl in the structure 2 form the 3D networks. Topological analysis showed that these H-bonded networks are new. An additional factor that plays a role in the crystal packing of the discussed complexes is the π-π stacking interaction between the aromatic rings of Hba− and Bipy forming infinite chains –Hba–Bipy–Bipy–Hba–. The spectroscopic and thermal properties of compounds were analyzed.

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Держатели документа:
Siberian Federal University, 79 Svobodny Ave., Krasnoyarsk, 660041, Russian Federation
Laboratory of Crystal Physics, Federal Research Center KSC SB RAS, bld. 38 Akademgorodok 50, Krasnoyarsk, 660036, Russian Federation
Department of Physics, Far Eastern State Transport University, 47 Seryshev Str., Khabarovsk, 680021, Russian Federation
Favorsky Institute of Chemistry, Russian Academy of Sciences, Siberian Branch, 1 Favorsky, Irkutsk, 664033, Russian Federation

Доп.точки доступа:
Golovnev, N. N.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Sterkhova, I. V.; Lesnikov, M. K.
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16.

The Influence of CuO Dopant Nanoparticles, Prepared via the Arc Plasma Synthesis Method, on the Critical Current of YBa2Cu3O7–δ Composites / A. V. Ushakov [et al.] // Inorg. Mater.: Appl. Res. - 2019. - Vol. 10, Is. 4. - P. 999-1002, DOI 10.1134/S2075113319040439. - Cited References: 13. - This work was supported by the Russian Science Foundation (project no. 16-19-10054). . - ISSN 2075-1133
Кл.слова (ненормированные):
nanodispersed powder -- high-temperature superconductor -- copper oxide -- vacuum arc
Аннотация: YBa2Cu3O7 – δ–CuO composites with CuO particle contents of 0.5, 1.0, 2.0, 5.0, 10, 15, 20, and 24% were produced via arc plasma synthesis. Their magnetic properties were analyzed in the context of the expanded critical state model. In comparison with a reference sample, the critical current intragranular density increased in composites with CuO concentrations of 0.5, 1, 20, and 24%. The mechanisms of the influence of nanodopants on the change in the critical current density at various volume contents of nano-CuO were proposed as well.

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Публикация на русском языке Влияние добавок наночастиц CuO плазменно-дугового синтеза на критический ток сверхпроводника YBa2Cu3O7-δ [Текст] / А. В. Ушаков [и др.] // Материаловедение. - 2019. - № 2. - С. 34-37

Держатели документа:
Federal Research Center Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Ushakov, A. V.; Karpov, I. V.; Lepeshev, A. A.; Petrov, M. I.; Петров, Михаил Иванович; Fedorov, L. Y.; Gokhfel'd, D. M.; Гохфельд, Денис Михайлович; Zharkov, S. M.; Жарков, Сергей Михайлович; Zeer, G. M.; Demin, V. G.; Abkaryan, A. K.
}
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17.

Investigation of the Magnetic Properties of Ludwigites / R. M. Eremina [et al.] // Bull. Russ. Acad. Sci. Phys. - 2019. - Vol. 83, Is. 7. - P. 912-914, DOI 10.3103/S1062873819070141. - Cited References: 6. - This work was supported by the Russian Foundation for Basic Research, project no. 17-02-00953. . - ISSN 1062-8738
Кл.слова (ненормированные):
Aluminum compounds -- Copper compounds -- Gallium compounds -- Magnetic susceptibility -- Metal ions -- Single crystals -- Temperature distribution -- X ray powder diffraction
Аннотация: Single crystals of Cu2AlBO5 and Cu2GaBO5 copper oxyborates are synthesized via solution-melt crystallization and subjected to X-ray diffraction analysis. Parameters of the crystal lattice and the positions of atoms in a unit cell are determined. Copper ions form a structural chain along axis а in Cu2AlBO5 and Cu2GaBO5. Temperature dependences of the magnetic susceptibility are measured. The obtained curves feature kinks at Т = 2.4 (Cu2AlBO5) and 4.1 K (Cu2GaBO5). © 2019, Allerton Press, Inc.

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Публикация на русском языке Исследование магнитных свойств людвигитов [Текст] / Р. М. Еремина [и др.] // Изв. РАН. Сер. физич. - 2019. - Т. 83 № 7. - С. 999-1002

Держатели документа:
Zavoisky Physical-Technical Institute, Kazan Scientific Center, Russian Academy of Sciences, Kazan, 420029, Russian Federation
Kazan Federal University, Kazan, 420008, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation

Доп.точки доступа:
Eremina, R. M.; Moshkina, E. M.; Мошкина, Евгения Михайловна; Gavrilova, T. P.; Gilmutdinov, I. F.; Sofronova, S. N.; Софронова, Светлана Николаевна; Kiiamov, A. G.
}
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18.

Stress-wave change in the copper structure: Covering magnetic response / N. A. Shepeta [et al.] // IOP Conf. Ser.: Mater. Sci. Eng. - 2019. - Vol. 560: 13th International Conference on Mechanical Engineering, Automation and Control Systems, MEACS 2018 (12 December 2018 through 14 December 2018, ) Conference code: 149903, Is. 1. - Ст. 012158, DOI 10.1088/1757-899X/560/1/012158. - Cited References: 15
Кл.слова (ненормированные):
Copper -- Deformation -- Elastic waves -- Flight control systems -- Magnetism -- Multilayer films -- Multilayers -- Wavefronts
Аннотация: The work presents the results of the investigationof deformation processes occurring in copper after stress-wave influence. Structural changes analysis is carried out by direct research methods (X-ray phase analysis and optical microscopy) along and perpendicular to the spreading direction of the stress wave front in the copper foil plane. For more information, investigations have been conducted by an indirect method using ferromagnetic resonance of magnetic characteristics. As a magnetic covering, Co/Ni-type multilayer films are deposited on the copper foil, which makes it possible to apply magnetic research methods. The magnetic response of the multilayer covering correlates with the modification of the copper structure observed by direct methods. The information obtained in the course of research allows us to conclude that the wave character of the deformation processes occurring in copper is natural. The value and direction of structural modifications vary along the sample length as a function with a long-wave period is about 30 mm, which is consistent with the inhomogeneous distribution model of internal stresses. Throughout the sample length, alternating areas of stretching and compression of copper grains are fixed along the spreading direction of the stress wave front. The greatest stretching of the structural elements is observed at a distance equal to almost half the wavelength of the mechanical deformation field. Thus, the translational (shear) mode of the mechanical field of material plastic flow appears as the results of the investigation. © 2019 Published under licence by IOP Publishing Ltd.

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Держатели документа:
Siberian Federal University, 79, Svobodny Ave., Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 50/38, Academgorodok Str., Krasnoyarsk, 660036, Russian Federation
Institute for Energy Research, Safety Research and Reactor Technology, Forschungszentrum Julich GmbH, Julich, D-52425, Germany
Reshetnev Siberian State University of Science and Technology, 31, Krasnoyarsky Rabochy Ave., Krasnoyarsk, 660037, Russian Federation

Доп.точки доступа:
Shepeta, N. A.; Denisova, E. A.; Денисова, Елена Александровна; Bucaemskii, A. A.; Tynchenko, V. S.; Gorodov, A. A.; International Conference on Mechanical Engineering, Automation and Control Systems(13 ; 2008 ; 12 - 14 Dec. ; Novosibirsk)
}
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19.

Petrova, A. E.
Copper metaborate CuB2O4 phase diagrams bAsed on the results of measuring the magnetic moment / A. E. Petrova, A. I. Pankrats // J. Exp. Theor. Phys. - 2018. - Vol. 126, Is. 4. - P. 506-513, DOI 10.1134/S1063776118030172. - Cited References: 18. - This work was supported in part by the Russian Foundation for Basic Research (project no. 18-02-00183-a) and the program “Condensed Matter Physics and New-Generation Materials” of the Presidium of the Russian Academy of Sciences. . - ISSN 1063-7761
Кл.слова (ненормированные):
Copper metaborate -- Magnetic phase transitions -- Multiferroics
Аннотация: The magnetic phase transitions and the phase diagrams of the CuB2O4 multiferroic are studied. Phase diagrams of copper metaborate in a magnetic field directed along the [100] and [001] axes are plotted using the results of measuring the magnetic moment. Evidences for the existence of polycritical points are obtained.

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Публикация на русском языке Петрова А. Е. Фазовые диаграммы метабората меди CuB2O4 по результатам исследования магнитного момента [Текст] / А. Е. Петрова, А. И. Панкрац // Журн. эксперим. и теор. физ. - 2018. - Т. 153 Вып. 4. - С. 615-624

Держатели документа:
Institute for High Pressure Physics, Russian Academy of Sciences, Troitsk, Moscow, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Science, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Pankrats, A. I.; Панкрац, Анатолий Иванович
}
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20.

Localization and transfer of charge carriers in CuO nanopowder by impedance spectroscopy / A. A. Lepeshev [et al.] // J. Mater. Sci.: Mater. Electron. - 2018. - Vol. 29, Is. 14. - P. 12118–12125, DOI 10.1007/s10854-018-9319-2. - Cited References: 26. - The work was performed with a support of the Grant of the Russian Science Foundation (Project No. 16-19-10054). . - ISSN 0957-4522
Кл.слова (ненормированные):
Copper oxides -- Electric charge -- Electric fields -- Electrodes -- Metal nanoparticles -- Permittivity -- Spectroscopy
Аннотация: Particular electro-physical characteristics of CuO nanopowder were investigated by impedance spectroscopy using a sensor based on interdigitated structure in the frequency range from 1 Hz to 100 MHz. The results of investigation were considered. Simulation of impedance spectra by equivalent electric circuits was carried out for numerical approximations of the frequency dependences of the dielectrical permittivity and conductivity. Electric charge accumulation of on the boundaries of nanoparticles and near the metal electrodes of the sensor was revealed. It was shown that a double electric layer is formed near the electrodes, which leads to the appearance of anomalously large values of dielectrical permittivity and an increase in the conductivity in the low-frequency region. The obtained results can be explained by proton conductivity in the nanopowder caused by moisture which is adsorbed on the surface of the nanoparticles. It was shown that after high-temperature annealing of CuO nanopowders, accumulation of electric charges was not observed. It was established that hopping or polaron conductivity occurs in the annealed CuO samples, which increases with increasing electric field frequency according to the power law with a fractional exponent.

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Держатели документа:
Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Science, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Siberian Branch, Kirensky Institute of Physics, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Lepeshev, A. A.; Drokin, N. A.; Дрокин, Николай Александрович; Ushakov, A. V.; Karpov, I. V.; Fedorov, L. Y.; Bachurina, E. P.
}
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