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    Val'kov, V. V.
    The modification of low-temperature magnetic properties of the Fe-based double-zigzag single-chain magnet under irradiation / V. V. Val'kov, M. S. Shustin // J. Magn. Magn. Mater. - 2017. - Vol. 440. - P. 19-22, DOI 10.1016/j.jmmm.2016.12.100. - Cited References: 14. - This study was supported by the Presidium of the Russian Academy of Sciences, program Actual problems of low temperature physics (project 0358-2015-0005); the Russian Foundation for Basic Research, projects nos. 16-42-243057 (partly with Government of Krasnoyarsk Territory) and 15-42-04372; Technology Support Fund to the research project nos. 14/16. The work of M.S.S. was supported by grant of the President of the Russian Federation (project MK-1398.2017.2). . - ISSN 0304-8853
   Перевод заглавия: Модификация низкотемпературных свойств железо содержащего одноцепочечного магнетика с магнитной топологией двойного зигзага

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
SPIN-CROSSOVER
MODEL
Кл.слова (ненормированные):
Single-chain magnets -- Light-induced spin crossover -- Magnetic susceptibility -- Quantum phase transitions
Аннотация: An exact solution for a generalized Ising model describing single-chain magnet {[FeIII(Tp*)(CN)3]2FeII(bpmh)}·2H2O with alternating high-spin and low-spin iron ions and double-zigzag magnetic topology has been calculated making use of the transfer-matrix technique. The introduction of a statistical ensemble taking into account the presence of iron ions with high-spin (HS) and low-spin (LS) states made it possible to describe the modification of magnetic susceptibility under optical irradiation. It has been shown that joint implementation of iron ions with photoinduced magnetic states and non-magnetic intersite repulsion ions of these states is caused by the difference of the ionic radii of HSFeIIHSFeII and LSFeIILSFeII leads to the quantum phase transitions in the system.

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Доп.точки доступа:
Shustin, M. S.; Шустин, Максим Сергеевич; Вальков, Валерий Владимирович; 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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    Val'kov, V. V.
    Quantum theory of strongly anisotropic two- and four-sublattice single-chain magnets / V. V. Val'kov, M. S. Shustin // J. Low Temp. Phys. - 2016. - Vol. 185, Is. 5-6. - P. 564-570, DOI 10.1007/s10909-015-1457-9. - Cited References:17. - This study was supported by the Presidium of the Russian Academy of Sciences, program "Actual problems of low temperature physics"; the Russian Foundation for Basic Research, Projects Nos. 13-02-00523, 14-02-31280 and 15-42-04372. . - ISSN 0022-2291. - ISSN 1573-7357
   Перевод заглавия: Квантовая теория сильно анизотропных двух- и четырехподрешеточных одноцепочечных магнетиков

РУБ Physics, Applied + Physics, Condensed Matter

Кл.слова (ненормированные):
Quantum magnets -- Spin wave theory -- Strong single-ion anisotropy
Аннотация: We have developed the spin wave theory of Heisenberg magnets with strong single-ion anisotropy of arbitrary symmetry with two and more sublattices. Using this approach, the low-temperature magnetic properties of the single-chain magnet catena- [FeII(ClO4)2FeIII(bpca)2](ClO4) with four sublattices and twisting mutually orthogonal easy plane have been calculated. It has been shown that the modulation of the easy planes directions creates on the one hand the low-temperature excitation spectrum similar to the one of the Ising models, and on the other hand strong spin fluctuations.

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Держатели документа:
LV Kirenskii Inst Phys, Theoret Phys Lab, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Dept Theoret Phys & Wave Phenomena, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Shustin, M. S.; Вальков, Валерий Владимирович; Presidium of the Russian Academy of Sciences, program "Actual problems of low temperature physics"; Russian Foundation for Basic Research [13-02-00523, 14-02-31280, 15-42-04372]
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Komogortsev, S. V.
Law of approach to magnetic saturation in nanocrystalline and amorphous ferromagnets with improved transition behavior between power-law regimes / S. V. Komogortsev, R. S. Iskhakov // J. Magn. Magn. Mater. - 2017. - Vol. 440. - P. 213-216, DOI 10.1016/j.jmmm.2016.12.145. - Cited References: 41. - The work has been supported by Russian Foundation for Basic Research, Grant nos. 16-03-00256, 15-08-06673 and RFBR-KRFS 15–42-04171. . - ISSN 0304-8853
Кл.слова (ненормированные):
Ferromagnetic materials -- Ferromagnetism -- Magnetic anisotropy -- Magnetism -- Magnets -- Nanocrystals -- Perturbation techniques -- Asymptotic regimes -- Law of approaches -- Nanocrystalline and amorphous -- Perturbation theory -- Power law regime -- Random magnetic anisotropies -- Transition behavior -- Transition modes -- Saturation magnetization
Аннотация: New law of the approach to magnetic saturation is proposed based on scaling in ferromagnets with random magnetic anisotropy. This law is consistent with the known laws derived within perturbation theory in extreme cases, but it describes the transition mode between the power-low asymptotic regimes better. The improved law is proper for reliable fitting the approach magnetization to saturation in nanocrystalline and amorphous ferromagnets. © 2017 Elsevier B.V.

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Доп.точки доступа:
Iskhakov, R. S.; Исхаков, Рауф Садыкович; Комогорцев, Сергей Викторович; 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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Structure and magnetic properties of (Sm0.9Zr0.1)Fe11Ti alloys with ThMn12-type structure / D. S. Neznakhin [et al.] // J. Magn. Magn. Mater. - 2019. - Vol. 484. - P. 212-217, DOI 10.1016/j.jmmm.2019.04.030. - Cited References: 40. - This work was supported by MES of RF (contract No. 3.6121.2017/8.9) and by Act 211 Government of RF (agreement No. 02.A03.21.0006). TEM was performed in the Center for Shared Use of Federal Research Center KSC SB RAS. . - ISSN 0304-8853
Кл.слова (ненормированные):
ThMn 12 -type phase -- Permanent magnets -- Rare earth-lean magnets
Аннотация: Rapidly increasing demand for high-energy permanent magnets and volatility of the rear-earth market encourage a search of hard magnetic materials that can compete with those based on the Nd2Fe14B phase. Sm-Fe compounds with the ThMn12-type crystal structure are considered as promising candidates for it. However, their synthesis and achievement of theoretically predicted magnetic properties are still challenging tasks that have not been solved yet. This paper addresses this problem. Its aim was to synthesize and to study magnetic properties of the (Sm0.9Zr0.1)Fe11Ti compound with ThMn12-type structure. Initially amorphous alloy was obtained by melt spinning and its subsequent heat treatments were performed. Structural and phase transformations of the (Sm0.9Zr0.1)Fe11Ti alloy with annealing temperatures were studied along with magnetic properties. For the optimally annealed alloy features of magnetization reversal were discussed and temperature dependences of coercivity and maximum energy product were obtained.

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Держатели документа:
Ural Federal University, Yekaterinburg, 620002, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Neznakhin, D. S.; Andreev, S. V.; Semkin, M. A.; Selezneva, N. V.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Bolyachkin, A. S.; Kudrevatykh, N. V.; Volegov, A. S.
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    Superconducting YBCO Foams as Trapped Field Magnets / M. R. Koblischka [et al.] // Materials. - 2019. - Vol. 12, Is. 6. - Ст. 853, DOI 10.3390/ma12060853. - Cited References: 62. - This work is part of the SUPERFOAM international project funded by ANR and DFG under the references ANR-17-CE05-0030 and DFG-ANR Ko2323-10, respectively. Further funding by a SIT start-up grant is also gratefully acknowledged. . - ISSN 1996-1944
   Перевод заглавия: Сверхпроводящие YBCO пены в качестве магнитов, действующих благодаря захваченному полю

РУБ Materials Science, Multidisciplinary
Рубрики:
CRITICAL CURRENT-DENSITY
   TRANSPORT-PROPERTIES
   SINGLE-GRAIN
   BULK
Кл.слова (ненормированные):
High-Tc superconductors -- YBCO -- foam -- trapped fields -- current flow
Аннотация: Superconducting foams of YBa2Cu3Oy (YBCO) are proposed as trapped field magnets or supermagnets. The foams with an open-porous structure are light-weight, mechanically strong and can be prepared in large sample sizes. The trapped field distributions were measured using a scanning Hall probe on various sides of an YBCO foam sample after field-cooling in a magnetic field of 0.5 T produced by a square Nd-Fe-B permanent magnet. The maximum trapped field (TF) measured is about 400 G (77 K) at the bottom of the sample. Several details of the TF distribution, the current flow and possible applicatons of such superconducting foam samples in space applications, e.g., as active elements in flux-pinning docking interfaces (FPDI) or as portable strong magnets to collect debris in space, are outlined.

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Держатели документа:
Shibaura Inst Technol, Dept Mat Sci & Engn, Superconducting Mat Lab, Tokyo 1358548, Japan.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
ACCESS, Intzestr 5, D-52072 Aachen, Germany.
Natl Inst Adv Ind Sci & Technol, Elect & Photon Res Inst, Superconducting Elect Grp, 1-1-1 Cent 2, Tsukuba, Ibaraki 3058568, Japan.
Raychem RPG Pvt Ltd, Aga Abbas Ali Rd Off Halasur Rd, Bangalore 560042, Karnataka, India.

Доп.точки доступа:
Koblischka, Michael R.; Naik, Sugali Pavan Kumar; Koblischka-Veneva, Anjela; Murakami, Masato; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Reddy, Eddula Sudhakar; Schmitz, Georg J.; ANR [ANR-17-CE05-0030]; DFG [DFG-ANR Ko2323-10]; SIT start-up grant
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Losses of magnetite iron in wet separation / E. K. Yakubailik [et al.] // Steel Transl. - 2016. - Vol. 46, Is. 6. - P. 390-394, DOI 10.3103/S0967091216060115. - Cited References: 15 . - ISSN 0967-0912
Кл.слова (ненормированные):
high-power magnets -- iron losses -- magnetic parameters -- magnetite iron -- tailings -- wet separation
Аннотация: Samples of all the tailings from enrichment processes at the Abagur plant operated by OAO Evrazruda are studied. The tailings are subjected to magnetic and chemical analysis, and the magnetic characteristics of the products are measured. The mean magnetite iron content in the tailings was about 0.9% in 2013. Experiments confirm that the main magnetite losses are associated with small classes and their poor magnetic properties. The losses of magnetite are reduced as the separation field is increased. At the plant, 45% of the barium–ferrite magnetic systems in the PBM 90/250 separators have been replaced by a system based on neodymium–iron–boron composites, with increase in the field from 111 to 175 kA/m. Modernization of the magnetic systems in all the separators at the Abagur plant is recommended. In thickening, the installation of separators for regeneration of the suspensions, with a field of 190 kA/m, is recommended. After reconstruction, the losses of magnetite iron at the plant may be reduced to 0.45–0.55%. © 2016, Allerton Press, Inc.

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Публикация на русском языке Уровень потерь магнетитового железа при мокрой сепарации [Текст] / Э. К. Якубайлик [и др.] // Изв. вузов. Черн. металлургия. - Москва : Национальный исследовательский технологический университет «МИСиС», 2016. - Т. 59 № 6. - С. 397-401

Держатели документа:
Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
OAO Evrazruda, Novokuznetsk, Russian Federation
ZAO GMK Kazakhaltyn, Stepnogorsk, Kazakhstan

Доп.точки доступа:
Yakubailik, E. K.; Якубайлик, Эдуард Константинович; Ganzhenko, I. M.; Butov, P. Y.; Kilin, V. I.
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MARTYNOV, S. N.
CORRELATION-FUNCTIONS AND ELECTRON-SPIN-RESONANCE LINEWIDTH OF TWO-DIMENSIONAL HEISENBERG MAGNETS / S. N. MARTYNOV // Fiz. Tverd. Tela. - 1986. - Vol. 28, Is. 10. - P. 3006-3011. - Cited References: 15 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

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PETRAKOVSKII, G. A.
MONTE-CARLO STUDY OF DILUTE QUASI-2-DIMENSIONAL MAGNETS WITH RANDOM INTERACTIONS / G. A. PETRAKOVSKII, S. S. APLESNIN // Fiz. Tverd. Tela. - 1987. - Vol. 29, Is. 2. - P. 515-522. - Cited References: 16 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

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Доп.точки доступа:
APLESNIN, S. S.
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APLESNIN, S. S.
CRITICAL-BEHAVIOR OF DILUTED ISING MAGNETS WITH ANISOTROPIC EXCHANGE INTERACTION DISTRIBUTION / S. S. APLESNIN // Fiz. Tverd. Tela. - 1984. - Vol. 26, Is. 11. - P. 3355-3361. - Cited References: 19 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

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10.

Val'kov, V. V.
Modification of magnetic properties of the single-chain magnet [FeIII(Tp*)(CN)3]2FeII(bpmh)·2H2O under irradiation / V. V. Val'kov, M. S. Shustin // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. P10.43. - P. 512. - References: 1 . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
single-chain magnets -- spin-crossover -- light irradiation -- quantum phase transition

Доп.точки доступа:
Shustin, M. S.; Шустин, Максим Сергеевич; Вальков, Валерий Владимирович; 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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