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Вид документа : Однотомное издание
Шифр издания :
Заглавие : International workshop on actual problems of condensed matter physics : Program. Book of abstracts
Выходные данные : Krasnoyarsk, 2017
Колич.характеристики :30 с
Коллективы : Federal Research Center KSC SB RAS, Kirensky Institute of Physics, Siberian Federal Univercity, International Workshop on Actual Problems of Condensed Matter Physics (27 Mar. - 1 Apr. 2017; Krasnoyarsk/ Cheremushki) :
Содержание : Magnetic and transport properties of the epitaxial Fe3Si film on a Si substrate/ I. A. Bondarev. The magnetic anisotropy of the Fe and Fe(1-x)Si(x) thin films depend on/ I. A. Yakovlev [и др.]. Inverted opals as the Josephson networks of weak links/ S. I. Popkov [и др.]. Electronic structure and Fermi surface within the cluster perturbation theory in X-operators representation/ S. Nikolaev, V. I. Kuz'min, S. G. Ovchinnikov. DFT investigation of electronic and optical magnetic properties of one dimensional transition metal halide structuresTmHaI3/ A. S. Fedorov [и др.]. Effect of interatomic exchange interaction on spin crossover and Mott-Hubbard transition under high pressure and the physical properties of the low Earth’s mantle/ S. G. Ovchinnikov [и др.]. Extremely high magnetic-field sensitivity of charge transport in the Mn/SiO2/p-Si hybrid structure/ I. A. Tarasov [и др.]. Marnetic-field sensitivity of charge transport in silicon-based hybrid structures/ N. V. Volkov [et al.]. Fabrication of multi-terminal planar devices based on epitaxial Fe1-xSix films grown on Si(111)/ A. V. Lukyanenko, A. S. Tarasov, I. A. Tarasov [et al.] ; A. V. Luyanenko [и др.]. Magnetic field-driven lateral photovoltaic effect in the Fe/SiO2/p-Si hibrid structure with the Scottky barrier/ M. V. Rautskii [и др.]. Small angle X-ray scattering and atomic structure of aptamer biomolecules/ R. Moryachkov [и др.]. Iron silicides and pure iron epitaxial and highly-textured nanostructures on silicon: growth and their physical properties/ I. A. Tarasov [и др.]. Magnetic nanoparticles and DNA-aptamers conjugates for diagnostics and therapy of cancer/ A. E. Sokolov [и др.]. The microscopic origin of ferromagnetism in Fe silicides/ I. S. Sandalov [и др.].
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Вид документа : Однотомное издание
Шифр издания :
Автор(ы) : Flerov I. N., Gorev M. V., Molokeev M. S., Laptash N. M.
Заглавие : Ferroelastic and ferroelectric phase transitions in fluoro- and oxyfluorometallates
Место публикации : Photonic and electronic properties of fluoride materials: Elsevier, 2016. - Chapter 16. - P.355-381. - (Progress in fluorine science series). - , DOI 10.1016/B978-0-12-801639-8.00016-7
Примечания : Cited References: 92. - The reported study was partially supported by RFBR, research project No. 15-02-02009 a
Предметные рубрики: ELASTIC NEUTRON-DIFFRACTION
ORIENTATIONAL DISORDER
CRYSTAL-STRUCTURES
THERMODYNAMIC PROPERTIES
NONCRITICAL PARAMETERS
CUBIC PEROVSKITES
RAMAN-SCATTERING
SINGLE-CRYSTALS
A2BX4 STRUCTURE
HIGH-RESOLUTION
Аннотация: Different degree of structural disorder is one of the main features of many fluoro- and oxyfluorometallates crystallizing in high symmetry structures. The comprehensive study of these compounds (perovskites, elpasolites, pyrochlores, etc.) enabled to determine a great effect of the size and shape as well as crystallographic sites of cationic and anionic species on the mechanism of structural ordering. Ferroelastic and ferroelectric phase transitions of different order, type, and succession can be realized as a result of chemical and hydrostatic pressure change. It was found that the substitution of monoatomic cations for tetrahedral ammonium group was accompanied by rather significant change of electron density distribution, entropy, and phase diagrams. Some compounds studied were considered to be promising solid-state refrigerants owing to the pronounced barocaloric effect resulting from large entropy and baric coefficient of phase transitions.
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Вид документа : Однотомное издание
Шифр издания :
Автор(ы) : Ovchinnikov S. G., Makarov I. A., Shneyder E. I., Togushova Yu.N., Gavrichkov V. A., Korshunov M. M.
Заглавие : Magnetic mechanisms of pairing in strongly correlated electron system of copper oxides [Electronic resource]
Место публикации : arXiv. - 2015. - Ст.eprint arXiv:1510.08640
Примечания : Cited References: 214. - The authors acknowledge support from FCP Scientific and Research-and-Educational Personnel of Innovative Russia for 2009-2013 (GK 16.740.12.0731 and GK 16.740.11.0740), RFBR (Grants 12-02-31534 and 12-02-31597), Siberian Federal University (Theme #F-11), Governmental support of leading scientific schools of Russia (NSh-1044.2012.2), Program of SB RAS #44, Presidium of RAS program #20.7. EIS, IAM, and MMK are grateful to The Dynasty Foundation and ICFPM forthe financial supportIn book.: Recent advances in superconductivity research", ed. by C.B. Taylor, 321 p., Nova Science Publishers Inc. New York, 2013 ISBN: 978-1-62618-406-0, Chapter 6
Предметные рубрики: Condensed matter-- Strongly correlated electrons
Superconductivity
Ключевые слова (''Своб.индексиров.''): strong electronic correlations--cuprates--hubbard operators--electronic structure--quantum phase transitions--magnetic mechanism of pairing
Аннотация: The multielectron LDA+GTB approach has been developed to calculate electronic structure of strongly correlated cuprates. At low energies the effective Hamiltonian of the t−t′−t"−t⊥−J∗−J⊥-model has been derived with parameters coming from the ab initio calculation for LSCO. The electronic structure of LSCO has been calculated self-consistently with the short-range antiferromagnetic order for various doping level. Two Lifshitz-type quantum phase transitions with Fermi surface topology changes have been found at dopings xc1=0.15 and xc2=0.24. Its effect on normal and superconducting properties has been calculated. The interatomic exchange parameter and its pressure dependence has been calculated within LDA+GTB scheme. The magnetic mechanisms of d-wave pairing induced by static and dynamical spin correlations are discussed. Simultaneous treatment of magnetic and phonon pairing results in the conclusion that both contributions are of the same order. For two layer cuprates like YBCO the interlayer hopping and exchange effects on the electronic structure and doping dependence of Tc is discussed as well as the Coulomb interaction induced mechanism of pairing.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Krasnov P. O., Milyutina Y. M.
Заглавие : Exited electronic states of porphyrin-fullerene dyads with different type of bonding
Коллективы : "Trends in Nanomechanics and Nanoengineering", workshop, Сибирский федеральный университет, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : Workshop "Trends in Nanomechanics and Nanoengineering" : book of abstracts/ предс. сем. K. S. Aleksandrov ; зам. предс. сем.: G. S. Patrin, S. G. Ovchinnikov ; чл. лок. ком.: N. N. Kosyrev, A. S. Fedorov [et al]. - 2009. - P.34
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Avramov P. V.
Заглавие : The role of interfaces in determination of electronic properties of complex silicon nanoclusters
Коллективы : "Trends in Nanomechanics and Nanoengineering", workshop, Сибирский федеральный университет, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : Workshop "Trends in Nanomechanics and Nanoengineering": book of abstracts/ предс. сем. K. S. Aleksandrov ; зам. предс. сем.: G. S. Patrin, S. G. Ovchinnikov ; чл. лок. ком.: N. N. Kosyrev, A. S. Fedorov [et al]. - 2009. - P.11
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Melchakova I., Kovaleva E. A., Mikhaleva, Natalia S., Tomilin F. N., Ovchinnikov S. G., Kuzubov A. A., Avramov P. V.
Заглавие : External electric field effect on electronic properties and charge transfer in CoI2/NiI2 spinterface
Коллективы : Ministry of Education and Science of the Russian FederationMinistry of Education and Science, Russian Federation [16.1455.2017/PCh]; National Research Foundation of KoreaNational Research Foundation of Korea [NRF-2017R1A2B4004440]; Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [18-43-243011]
Место публикации : Int. J. Quantum Chem. - 2020. - Vol. 120, Is. 3. - Ст.e26092. - ISSN 0020-7608, DOI 10.1002/qua.26092. - ISSN 1097-461X(eISSN)
Примечания : Cited References: 27. - Ministry of Education and Science of the Russian Federation, Grant/Award Number: 16.1455.2017/PCh; National Research Foundation of Korea, Grant/Award Number: NRF-2017R1A2B4004440; Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science, Grant/Award Number: 18-43-243011
Предметные рубрики: MAGNETIC-PROPERTIES
METAL
EDGE
Аннотация: Electronic structure and spin-related properties of CoI2/NiI2 heterostructure were studied by means of density functional theory. It was shown that the electronic structure at the Fermi level can be characterized by a band gap. The effect of the external electric field on charge transfer and electronic properties of the CoI2/NiI2 interface was investigated, and it was found that band gap width depends on the strength of the applied electric field, switching its nature from semiconducting to a half-metallic one. An easy control of the electronic properties and promising spin-polarized nature of the CoI2/NiI2 spinterface allows the heterostructure to be used in spin-related applications.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Kazak N. V., Rudenko V. V., Gromilov S. A., Ovchinnikov S. G., Knyazev Yu. V.
Заглавие : Structural, magnetic and electronic properties of vanadium-substituted iron warwickite
Коллективы : Российская академия наук, Уральское отделение РАН, Институт физики металлов им. М. Н. Михеева Уральского отделения РАН, Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Российский фонд фундаментальных исследований, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Euro-asian symposium "Trends in magnetism" (EASTMAG-2019): Book of abstracts/ чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст.H.P4. - P.79-80. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 4. - Support by the Russian Foundation for Basic Research, Russia (project no. 17-02-00826-a) and Council for Grants of the President of the Russian Federation SP-1334.2019.5 is acknowledged
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Nemtsev I. V., Zhandun V. S.
Заглавие : Ab initio study of the magnetic, optical and electronic properties of spinel Co3O4 within dft and GW approaches
Коллективы : Российская академия наук, Уральское отделение РАН, Институт физики металлов им. М. Н. Михеева Уральского отделения РАН, Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Российский фонд фундаментальных исследований, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Euro-asian symposium "Trends in magnetism" (EASTMAG-2019): Book of abstracts/ чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст.H.P17. - P.99-100. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 5. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project no. 18-42-243019: “Firstprinciples studies of the polarization, magnetic, electronic, and magnetoelectric properties of functional compounds with a spinel structure containing 3d and 4f ions”. This work has been carried out using computing resources of the federal collective usage center Complex for Simulation and Data Processing for Mega-science Facilities at NRC “Kurchatov Institute”, http://ckp.nrcki.ru/
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhandun V. S., Nemtsev A. V.
Заглавие : Ab initio study of the magnetic, optical and electronic properties of spinel Co3O4 within DFT and GW approaches
Место публикации : J. Magn. Magn. Mater. - 2020. - Vol. 499. - Ст.166306. - ISSN 0304-8853, DOI 10.1016/j.jmmm.2019.166306. - ISSN 1873-4766 (eISSN)
Примечания : Cited References: 65. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project № 18-42-243019: «First-principles studies of the polarization, magnetic, electronic, and magnetoelectric properties of functional compounds with a spinel structure containing 3d and 4f ions». The calculations were performed with the computer resources of “Complex modeling and data processing research installations of mega-class ”SRC“ Kurchatovsky Institute” (http://ckp.urcki.ru).
Аннотация: The spinel cobalt oxide Co3O4 is an antiferromagnetic semiconductor containing two non-equivalent Co2+ and Co3+ cobalt ions with different local environments and different magnetic moments. We have performed ab initio study and comparison of the electronic, magnetic and optical properties of Co3O4 within GGA, GGA + U, and G0W0 approximations. GGA correctly predicts Co3O4 to be a semiconductor, but severely underestimates the bandgap. G0W0 approximations increase the bandgap indicating a better description of the cobalt localized d-states. The spectral weights of the bands near Fermi energy are about 0.5. Ab initio calculations confirm that the low-spin state of Co3+ ion arises due to the local environment and the crystal effect field. The investigation of the pressure dependencies of magnetic properties revealed the appearance of Co3+ ion abrupt transition from low-spin state to high-spin state under tensile pressure. This allows manipulating the spin state of Co3+ ions through the pressure or strain.
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Demin V. A., Sorokin P. B., Avramov P. V., Chernozatonskii L. A.
Заглавие : Atomic structure and electronic properties of beta-phase silicon nanowires
Коллективы : "Trends in Nanomechanics and Nanoengineering", workshop, Сибирский федеральный университет, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : Workshop "Trends in Nanomechanics and Nanoengineering" : book of abstracts/ предс. сем. K. S. Aleksandrov ; зам. предс. сем.: G. S. Patrin, S. G. Ovchinnikov ; чл. лок. ком.: N. N. Kosyrev, A. S. Fedorov [et al]. - 2009. - P.36
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bezotosnyi P. I., Dmitrieva K. A., Sadakov A. V., Pervakov K. S., Muratov A. V., Usoltsev A. S., Tsvetkov, A. Yu., Gavrilkin, S. Yu., Pavlov N. S., Slobodchikov A. A., Vilkov, O. Yu., Rybkin A. G., Nekrasov I. A., Pudalov V. M.
Заглавие : Electronic band structure and superconducting properties of SnAs
Коллективы : Russian Foundation for Basic Research (RFBR)Russian Foundation for Basic Research (RFBR) [16-29-03330, 17-02-00015, 19-32-50001]; Ministry of Science and Higher Education of the Russian Federation [0023-2019-0005]; Saint Petersburg State University [40990069]; Presidium of RASRussian Academy of Sciences [12]; [MK-1683.2019.2]
Место публикации : Phys. Rev. B. - 2019. - Vol. 100, Is. 18. - Ст.184514. - ISSN 2469-9950, DOI 10.1103/PhysRevB.100.184514. - ISSN 2469-9969(eISSN)
Примечания : Cited References: 45. - The authors thank E. Z. Kuchinskii and M. V. Sadovskii for valuable discussions. This work was performed using equipment of the LPI Shared Facility Center and the resource center "Physical methods of surface investigation" (PMSI) of the Research park of Saint Petersburg State University. V.M.P. acknowledges Russian Foundation for Basic Research (RFBR) Grant No. 16-29-03330. P.I.B., K.A.D., A.V.S., K.S.P., A.V.M., A.S.U., A.Y.T., and S.Y.G. were supported within the state assignment of the Ministry of Science and Higher Education of the Russian Federation (Project No. 0023-2019-0005). A.G.R. acknowledges Saint Petersburg State University for research Grant No. 40990069. I.A.N., A.A.S., and N.S.P. acknowledge Russian Foundation for Basic Research (RFBR) Grants No. 17-02-00015 and No. 19-32-50001, the Program No. 12 of Fundamental Research of the Presidium of RAS. N.S.P. was also supported in part by the President of Russia grant for young scientists No. MK-1683.2019.2.
Предметные рубрики: TOPOLOGICAL CRYSTALLINE INSULATOR
GAP STRUCTURE
SPECTROSCOPY
Аннотация: We report a comprehensive study of physical properties of the binary superconductor compound SnAs. The electronic band structure of SnAs was investigated using both angle-resolved photoemission spectroscopy (ARPES) in a wide binding energy range and density functional theory (DFT) within generalized gradient approximation (GGA). The DFT/GGA calculations were done including spin-orbit coupling for both bulk and (111) slab crystal structures. Comparison of the DFT/GGA band dispersions with ARPES data shows that the spectrum for the (111) slab much better describes ARPES data than that for the bulk. In addition, we studied experimentally superconducting properties of SnAs by specific heat, magnetic susceptibility, magnetotransport measurements, and Andreev reflection spectroscopy. Temperature dependencies of the superconducting gap and of the specific heat were found to be well consistent with those expected for the single band BCS superconductors with an isotropic s-wave order parameter. Despite spin-orbit coupling present in SnAs, our data show no signatures of a potential unconventional superconductivity, and the characteristic BCS ratio 2Δ/Tc=3.48–3.73 is very close to the BCS value in the weak coupling limit.
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12.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Makarov I. A., Gavrichkov V. A., Shneider E. I., Nekrasov I. A., Slobodchikov A. A., Ovchinnikov S. G., Bianconi A.
Заглавие : Influence of CuO2 lattice strain on the electronic structure of high-Tc cuprate family
Коллективы : Российская академия наук, Уральское отделение РАН, Институт физики металлов им. М. Н. Михеева Уральского отделения РАН, Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Российский фонд фундаментальных исследований, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Euro-asian symposium "Trends in magnetism" (EASTMAG-2019): Book of abstracts/ чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст.I.P12. - P.157-158. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 4. - We thank the Presidium RAS program No.12 for the financial support under the project 0356-2018-0063. The reported study was funded by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory and Krasnoyarsk Regional Fund of Science according to the research project:”Features of electron-phonon coupling in high-temperature superconductors with strong electronic correlations” No. 18-42-240017. This work was done under the State contract (FASO) No. 0389-2014-0001 and supported in part by RFBR grants No. 17-02-00015 and 18-02-00281
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13.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Govorun I. V., Leksikov A. A.
Заглавие : New method for observation ferromagnetic resonance spectra
Коллективы : International Scientific-Technical Conference on Actual Problems of Electronic Instrument Engineering, Institute of Electrical and Electronics Engineers
Место публикации : 14th International Scientific-Technical Conference on Actual Problems of Electronic Instrument Engineering, APEIE 2018: Proceedings. - 2018. - P.41-44. - ISBN 9781538670545, DOI 10.1109/APEIE.2018.8545359
Примечания : Cited References: 8
Предметные рубрики: Magnetomechanical effects
Magnetic films
Magnetic fields
Ключевые слова (''Своб.индексиров.''): microstrip resonator--coupling coefficient--ferromagnetic resonance--damping pole
Аннотация: A new method for observation of ferromagnetic resonance spectra is demonstrated. Its operation based on the registering a damping pole in the frequency response of two-resonator microstrip structure containing a sample under investigation. A damping pole arises due to mutual compensation of capacitive (electric) and inductive (magnetic) interactions between the resonators and this compensation get broken in the ferromagnetic resonance.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Krinitsin, Pavel, Yelisseyev, Alexander, Jiang, Xingxing, Isaenko, Lyudmila, Molokeev M. S., Lin, Zheshuai, Pugachev, Alexey
Заглавие : Growth, Structure, and Optical Properties of Nonlinear LiGa0.55In0.45Te2 Single Crystals
Коллективы : Russian Foundation of Basic Research [15-02-03408a, 17-45-540775r_a, 17-52-53031]; national scientific foundations of China [11474292, 51702330, 11611530680, 91622118, 91622124]; special foundation of the director of Technical Institute of Physics and Chemistry (TIPC); China "863" project [2015AA034203]; Youth Innovation Promotion Association, CAS [2017035]; [0330-2016-0008]
Место публикации : Cryst. Growth Des. - 2019. - Vol. 19, Is. 3. - P.1805-1814. - ISSN 1528-7483, DOI 10.1021/acs.cgd.8b01788. - ISSN 1528-7505(eISSN)
Примечания : Cited References: 43. - This work was supported by state assignment project #0330-2016-0008 and partially by the Russian Foundation of Basic Research (Grant Nos. 15-02-03408a, 17-45-540775r_a, and 17-52-53031), national scientific foundations of China (Grant Nos. 11474292, 51702330, 11611530680, 91622118, and 91622124), the special foundation of the director of Technical Institute of Physics and Chemistry (TIPC), the China "863" project (No. 2015AA034203) and the Youth Innovation Promotion Association, CAS (outstanding member for Z.L. and Grant 2017035 for X.J.). Some part of the experiments was performed in the multiple-access center "High-Resolution Spectroscopy of Gases and Condensed Matter" at the IA&E SBRAS (Novosibirsk, Russia). The authors are grateful to N. F. Beisel from the Analytical laboratory of the Nikolaev Institute of Inorganic Chemistry SB RAS for atomic-emission spectral analysis of the studied crystals.
Предметные рубрики: PHASE-MATCHING PROPERTIES
ELECTRONIC-STRUCTURE
MID-IR
Аннотация: In search of new nonlinear optical crystals for the mid-IR range, we grew single crystals of LiGa0.55In0.45Te2 (LGITe) of optical quality; its structure was established, and the spectroscopic properties were studied. LGITe crystallizes in a tetragonal chalcopyrite-like (I4̅2d) structure at 667 ± 5 °C. Crystals are transparent in the 0.76–14.8 μm spectral region with some absorption bands related to OH/H2O and Ge–O vibrations. Analysis of the Tauc plots showed that LGITe is a direct band gap semiconductor with the band gap Eg = 1.837 eV at 300 K. The Raman spectrum for LGITe is very similar to that for LiGaTe2: the most intense band A1 near 120 cm–1 corresponds to the Li–Te vibration. DFT calculations were carried out for the first time to simulate the energy band structure (band gap ∼1.67 eV), density of states (DOS), birefringence (0.049 at 2 μm), and nonlinear susceptibility (d14 = d36 = −48.73 pm/V). For ternary LiInTe2 these parameters are Δn = 0.007 and d14 = d36 = −61.4 pm/V, respectively. The calculated optical properties indicate that LiGa0.55In0.45Te2 is a promising mid-IR nonlinear optical crystal with nonlinear parameters higher than those of LiGaTe2.
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Samoshkina Yu. E., Edelman I. S., Rautskii M. V., Molokeev M. S.
Заглавие : Correlation between magneto-optical and transport properties of Sr doped manganite films
Место публикации : J. Alloys Compd. - 2019. - Vol. 782. - P.334-342. - ISSN 09258388 (ISSN) , DOI 10.1016/j.jallcom.2018.12.158
Примечания : Cited References: 51. - The authors are grateful to A.V. Malakhovskii (Kirensky Institute of Physics, Federal Research Center KSC SB RAS) for fruitful discussions of the magneto-optics data and V.I. Chichkov and N.V. Andreev (National University of Science and Technology MISiS) for the preparation of the manganite films. The work was supported partly by Russian Academy of Sciences , [grant number 0356-2017-0030 ], and the Russian Foundation for Basic Research , [grant number 16-32-00209 ].
Ключевые слова (''Своб.индексиров.''): thin films--manganites--crystal structure--electrical transport--electronic properties--magnetic circular dichroism
Аннотация: The features of electronic structure of La0.7Sr0.3MnO3 Pr0.8Sr0.2MnO3, and Pr0.6Sr0.4MnO3 polycrystalline films of different thickness have been investigated using magnetic circular dichroism (MCD) in the range of 1.1–4.2 eV. The temperature behavior of the samples electrical resistance were also has been studied. It was found that films with high Sr content (0.3 and 0.4) act as high-temperature semiconductors, while the maximum in the temperature dependences of resistivity these films indicates the transition of the samples to the metallic state at some temperature TM-S, which is different for different sample thickness. The films with the lower Sr content (0.2) act as insulators in the used temperature range. The MCD spectra have been decomposed to the Gaussian-shaped lines, and the temperature dependence of intensity of each line has been analyzed in comparison with temperature dependence of the films magnetization and with their electric conductivity type. Different temperature behavior of the intensity of four specified Gaussian-lines was revealed for semiconductor films. In the case of insulating Pr0.8Sr0.2MnO3 samples, the intensity of three specified Gaussian lines changes with the temperature in the same way as the magnetization changed. It was established that the lanthanide (La, Pr) type does not affect the MCD spectra shape for the films with the same electrical conductivity type. Besides, the correlation between the MCD data of the films and their conductivity type was revealed. Due to the detailed analysis of the specified Gaussian lines with taking into account the well-known in the literature absorption bands, lying outside the studied spectral region, the MCD bands for the studied manganite films have been identified with electronic transitions of a different nature.
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16.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Nemtsev I. V., Zhandun V. S., Zinenko V. I.
Заглавие : First-principle calculations of electronic, magnetic and optical properties of spinels MnFe2O4 and FeMn2O4
Коллективы : International Seminar on Ferroelastic Physics, Международный семинар по физике сегнетоэластиков, Российская академия наук, Воронежский государственный технический университет
Место публикации : Ninth international seminar on ferroelastic physics (ISFP-9): book of abstracts/ org. com. I. N. Flerov [et al.] ; progr. com. V. I. Zinenko [et al.]. - 2018. - P.84
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17.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Knyazev Yu. V., Dudnikov V. A., Kazak N. V., Platunov M. S., Solovyov L. A., Verechschagin S. N., Burkov A. T., Novikov S. V.
Заглавие : Electronic states of the iron ions in the oxygen deficient perovskite Gd0.2Sr0.8FeO3-δ
Коллективы : Мёссбауэровская спектроскопия и её применения, международная конференция, Mössbauer Spectroscopy and Applications, International Conference, Южный федеральный университет, МИРЭА-Российский технологический университет, Российская академия наук, Институт кристаллографии им. А.В. Шубникова РАН, Федеральный научно-исследовательский центр "Кристаллография и фотоника" РАН, Московский государственный университет им. М.В. Ломоносова
Место публикации : Мёссбауэровская спектроскопия и её применения: сб. материалов XV международной конференции. - Ростов-на-Дону, 2018. - С. 45. - ISBN 978-5-9275-2831-8
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Xing, Gongcheng, Feng, Yuxin, Gao, Zhiyu, Tao, Mengxuan, Wang, Hongquan, Wei, Y.i., Molokeev M. S., Li, Guogang
Заглавие : A novel red-emitting La2CaHfO6:Mn4+ phosphor based on double perovskite structure for pc-WLEDs lighting
Место публикации : CrystEngComm. - 2019. - Vol. 21, Is. 23. - P.3605-3612. - ISSN 1466-8033, DOI 10.1039/c9ce00556k
Примечания : Cited References: 47. - This work is financially supported by the National Natural Science Foundation of China (NSFC No. 51672259).
Предметные рубрики: LUMINESCENCE PROPERTIES
ELECTRONIC-STRUCTURE
OPTICAL-PROPERTIES
SITE
Аннотация: Non-rare earth doped oxides with red emission are one of the current research hotspots for achieving the warm white light range in the phosphor converted white light emitting diodes (pc-WLEDs) field. In the current work, a novel Mn4+-activated La2CaHfO6 red phosphor is reported for the first time and its crystal structure is analyzed by Rietveld refinement. The photoluminescent properties of La2CaHfO6:Mn4+ are investigated in detail with the help of diffuse refletance spectroscopy, photoluminescence spectroscopy, and temperature-dependent PL spectroscopy. Based on the diffuse refletance spectra, the calculated optical band gap for La2CaHfO6 is 4.9 eV, indicating that La2CaHfO6 could be a suitable host for activators' doping. Under 380 nm near-ultraviolet (n-UV) light excitation, the as-prepared La2CaHfO6:Mn4+ displays intense red emission centered at 693 nm. Through an accurate calculation of Dq/B (2.47) and nephelauxetic effect β1 (0.949), the origination of strong crystal field (CF) and deep-red emission is demonstrated. By combining the representative La2CaHfO6:0.002Mn4+, blue BAM:Eu2+, and green (Ba,Sr)2SiO4:Eu2+ phosphors with a 380 nm UV chip to fabricate the pc-WLEDs device, a white light is obtained with low correlated color temperature (CCT = 5165 K) and high color rendering index (Ra = 87.8), demonstrating that the as-prepared La2CaHfO6:Mn4+ phosphors can be used as red-emitting candidate in pc-WLEDs lighting.
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19.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Nemtsev I. V., Zhandun V. S.
Заглавие : Ab initio study of the magnetic, optical and electronic properties of spinel Co3O4 within DFT and GW approaches
Коллективы : Российская академия наук, Уральское отделение РАН, Институт физики металлов им. М. Н. Михеева Уральского отделения РАН, Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Российский фонд фундаментальных исследований, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Euro-asian symposium "Trends in magnetism" (EASTMAG-2019): Book of abstracts/ чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.]; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст.H.P17. - P.99-101. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 3. - This work was supported by the “BASIS” Foundation for Development of Theoretical Physics and Mathematics, and the Krasnoyarsk Regional Fund of Science and Technology Support according to the participation in the VII Euro-Asian Symposium “Trends in Magnetism”: EASTMAG-2019
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20.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Makarov I. A., Gavrichkov V. A., Shneider E. I., Nekrasov I. A., Pavlov N. S., Ovchinnikov S. G., Bianconi A.
Заглавие : Influence of orthorhombic deformations in CuO2 plane on the electronic structure of high-Tc cuprate family
Коллективы : Российская академия наук, Уральское отделение РАН, Институт физики металлов им. М. Н. Михеева Уральского отделения РАН, Уральский федеральный университет им. первого Президента России Б.Н. Ельцина, Российский фонд фундаментальных исследований, Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : Euro-asian symposium "Trends in magnetism" (EASTMAG-2019): Book of abstracts/ чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст.I.O1. - P.114-115. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 4
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