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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 : Статья из журнала
Шифр издания :
Автор(ы) : Pankrats A. I., Kolkov M. I., Balaev A. D., Shabanov A. V., Vasiliev A. D.
Заглавие : Forming a ferrimagnetic-like structure in the PbMn1−xFexBO4 (x ≈ 0.1) single crystal upon partial substitution
Место публикации : J. Magn. Magn. Mater. - 2020. - Vol. 497. - Ст.165997. - ISSN 03048853 (ISSN), DOI 10.1016/j.jmmm.2019.165997
Примечания : Cited References: 25. - The authors are grateful to S. Nikitin for help in the specific heat measurements in a magnetic field and S. Martynov for fruitful discussions. This study was funded by RFBR and the Government of Krasnoyarsk Territory , Krasnoyarsk Regional Fund of Science , to the research project no. 18-42-240008 “Effect of Magnetic Structure on the Magnetodielectric Properties of Oxide Crystals Containing Stereoactive Ions Pb 2+ and Bi 3+”.
Аннотация: The PbMn1−xFexBO4 (x ≈ 0.1) orthoborate single crystals have been grown for the first time by spontaneous crystallization and their magnetic and resonance properties and specific heat have been examined. It has been established that partial substitution of iron ions for manganese ones leads to an increase in the Curie temperature to 34.2 K from its value of 30.3 K in the unsubstituted crystal, enhances the magnetic anisotropy, and reduces the saturation magnetization. The magnetization drop is explained in the framework of the model of a ferrimagnetic-like structure, in which the magnetic moments of iron and manganese ions form ferromagnetic subsystems coupled by the antiferromagnetic exchange. It has been found that under magnetization along the rhombic b axis the magnetic moments switch stepwise to the magnetic field direction in a certain critical field. The spin-reorientation transition is the first-order one. This feature of the crystal magnetization does not allow the experimental ferromagnetic resonance frequency-field dependence for the rhombic b axis to be described using the calculation for a simple rhombic ferromagnet. It has been established that the increase in the magnetic anisotropy of the crystal upon substitution leads to an increase in the energy gap in the ferromagnetic resonance spectrum to 121.5 GHz at T = 4.2 K.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Korshunov M. M., Shestakov V. A., Togushova Yu. N.
Заглавие : Magnetic interactions, superconductivity, and spin-resonance peak in iron-based materials
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.I1. - P.108. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 14. - Support by Presidium of RAS Program for the Fundamental Studies #12 “BASIS” Foundation for Development of Theoretical Physics and Mathematics is acknowledged
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kuz'min V. I., Orlov Yu. S., Zarubin A. E., Ovchinnikova T. M., Ovchinnikov S. G.
Заглавие : Magnetism in spin crossover systems: Short-range order and effects beyond the Heisenberg model
Коллективы : Russian Scientific FoundationRussian Science Foundation (RSF) [18-12-00022]
Место публикации : Phys. Rev. B. - 2019. - Vol. 100, Is. 14. - Ст.144429. - ISSN 2469-9950, DOI 10.1103/PhysRevB.100.144429. - ISSN 2469-9969(eISSN)
Примечания : Cited References: 72. - The authors thank the Russian Scientific Foundation for the financial support under Grant No. 18-12-00022.
Предметные рубрики: LOWER-MANTLE
STATE
TRANSITION
PRESSURE
IRON
SUSCEPTIBILITY
Аннотация: To study non-Heisenberg effects in the vicinity of spin crossover in strongly correlated electron systems we derive an effective low-energy Hamiltonian for the two-band Kanamori model. It contains a Heisenberg high-spin term proportional to exchange constant as well as a low-spin term proportional to spin gap parameter ɛs. Using cluster mean field theory we obtain several non-Heisenberg effects. Near the critical value of spin gap ɛcs there is a magnetic phase transition of first order. In the vicinity of ɛcs in the paramagnetic phase we observe nontrivial behavior of the Curie constant in the paramagnetic susceptibility in the wide range of temperature. Reentrant temperature behavior of nearest-neighbor spin-spin correlations is observed at ɛsɛcs. Finally, the pressure-temperature magnetic phase diagram for ferroperriclase is obtained using the effective Hamiltonian.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stolyar S. V., Bayukov O. A., Yaroslavtsev R. N., Knyazev Yu. V., Ladygina V. P., Gerasimova Y. V., Iskhakov R. S.
Заглавие : Ion reduction in iron oxide and oxyhydroxide nanoparticles during ultrasonic treatment
Место публикации : Adv. Powder Technol. - 2019. - Vol. 30, Is. 11. - P.2620-2625. - ISSN 09218831 (ISSN), DOI 10.1016/j.apt.2019.08.009
Примечания : Cited References: 30. - The reported study was carried out with the financial support of the Russian Foundation for Fundamental Research , the Government of the Krasnoyarsk Territory , the Krasnoyarsk Territory Fund for Support of Scientific and Technical Activity in the framework of scientific Projects No. 18-43-243003 and No. 18-42-243011 . The work is supported by the Special Program of the Ministry of Education and Science of the Russian Federation for the Siberian Federal University.
Аннотация: The effect of ultrasonic treatment of iron oxide and iron oxyhydroxide nanoparticles (ferrihydrite nanoparticles synthesized by Klebsiella oxytoca microorganisms, ferrihydrite nanoparticles synthesized by a chemical method and hematite nanoparticles) is studied. Samples of nanoparticles were investigated using transmission electron microscopy, Mossbauer spectroscopy and X-ray diffraction methods. The formation of the ?-Fe metal phase from nanoparticles of iron oxides and iron oxyhydroxides was detected. The metal phase is formed as a result of the reduction of iron ions during cavitation treatment. According to the experimental results, the presence of a protein or a polysaccharide component is necessary for the course of this reaction.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aplesnin S. S., Masyugin A. N., Sitnikov M. N., Ishibashi T.
Заглавие : Effect of a Substrate on the Magnetoelectric Effect in Rare-Earth-Doped Bismuth Iron Garnet
Место публикации : JETP Letters. - 2019. - Vol. 110, Is. 3. - P.223-230. - ISSN 00213640 (ISSN), DOI 10.1134/S0021364019150074
Примечания : Cited References: 29. - This work was supported jointly by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, and the Krasnoyarsk Science Foundation (project no. 18-42-240001 “Temperature-Induced Reversal of the Sign of Magnetoelectric Tensor Components in Neodymium-Doped Bismuth Iron Garnet”), as well as in part by the Russian Foundation for Basic Research (project nos. 18-32-00079_mol_a and 18-52-00009_bel_a) and by the Russian Ministry of Science and Higher Education (state contract no. 3.5743.2017/6.7).
Аннотация: The mechanism of relaxation of the electric polarization in thin films of rare-earth-doped bismuth iron garnet on glass and gallium gadolinium garnet substrates is determined in magnetic fields of 0 and 12 kOe in the temperature range of 80–380 K. The change in the sign of the residual electric polarization after switching off the electric field and the magnetic-field-induced shift of the hysteresis loop in the applied magnetic field are found. Linear and quadratic magnetoelectric effects with the tensor components depending on the substrate type are observed. The linear magnetoelectric effect is related to the spin–orbit coupling of electrons at the film–substrate interface, whereas the quadratic one is determined by the exchange–striction mechanism.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Korshunov M. M., Shestakov V. A., Togushova Yu. N.
Заглавие : Spin resonance peak in the superconducting state of iron-based material
Коллективы : Superstripes, International conference
Место публикации : Superstripes 2019 - Quantum Complex Matter: Book of abstracts of the int. conf. - 2019. - P.50-51. - ISBN 978-88-6683-099-3
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Верпекин, Виктор Васильевич, Васильев, Александр Дмитриевич, Павленко, Нина Ивановна, Семейкин О. В., Крейндлин А. З.
Заглавие : Синтез алкинильных комплексов циклопентадиенилдикарконил железа в условиях реакций pd/cu-катализируемого m-c сочетания
Коллективы : Полифункциональные химические материалы и технологии, Томский государственный университет
Место публикации : Полифункциональные химические материалы и технологии: матер. междунар. науч. конф. : в 2-х т. - 2019. - Т. 1. - С. 174-175. - ISBN 978-5-6042143-9-8
Примечания : Исследование выполнено за счет гранта Российского научного фонда (проект № 18-73-00150)
Аннотация: Reactions between cyclopentadienyliron dicarbonyl iodide and terminal alkynes containing such substituents as ortho-, meta-, para-pyrydyl, 2-thiophenyl, 2,1,3-benzothiadiazole in condition of Pd/Cu-catalyzed cross-coupling are studied. New synthetic methods for о-alkynyl iron complexes are developed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stolyar S. V., Chekanova L. A., Yaroslavtsev R. N., Komogortsev S. V., Gerasimova Yu. V., Bayukov O. A., Volochaev M. N., Iskhakov R. S., Garanzha I. V., Kolovskaya O. S., Bairmani M. Sh., Zamay T. N.
Заглавие : Magnetic nanoconstructions of iron oxides coated with arabinogalactan functionalized with DNA aptamer
Коллективы : International Scientific Conference "Conference on Applied Physics, Information Technologies and Engineering"
Место публикации : J. Phys. Conf. Ser. - 2019. - Vol. 1399. - Ст.022026. - ISSN 1742-6588, DOI 10.1088/1742-6596/1399/2/022026. - ISSN 1742-6596 (eISSN)
Примечания : Cited References: 6
Предметные рубрики: Applied Physics
Аннотация: New composite nanoparticles for biomedical applications have been manufactured. The particles consist of an anisomeric magnetite core coated with arabinogalactan and are functionalized with cameras for As-14 ascites cells (Ehrlich carcinoma). The binding of ascitic Ehrlich carcinoma cells to magnetic nanoparticles was evaluated using fluorescence microscopy.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yurkin G. Yu., Patrin G. S., Yarikov S. A.
Заглавие : Magnetic Properties of Fe1-xCoxSi Single Crystals at Low Co Impurity Concentrations
Место публикации : J. Sib. Fed. Univ. Math. Phys. - 2019. - Vol. 12, Is. 6. - P.756-771. - ISSN 1997-1397, DOI 10.17516/1997-1397-2019-12-1-1-6; Журн. СФУ. Матем. и физика. - ISSN 2313-6022 (eISSN)
Примечания : Cited References: 17
Аннотация: Velocity of bulk acoustic waves in base and rotated cuts have been measured by the ultrasonic pulse-echo method and values of CE ijkl and eijk in single crystals YAl3(BO3)4 have been calculated. The value of dijk piezoelectric modulus of these single crystals have been determined by quasistatic measurements, and εσ ij dielectric constants have been determined by the flat capacitor method. Experimental values of material constants have been applied for the study of Magnetostatic properties of FeSi and Fe0;98Co0;02Si single crystals have been studied. It has been found that the temperature and field dependences of the magnetization of monocrystal FeSi are strongly affected by introduction of a small amount of Co (2 %). A description of the results were provided by a model accounting for the formation of superparamagnetic iron clusters, as well as Fe-Co complexes. It is assumed that Fe-Co complexes form a ferromagnetic phase, which is approximately 0.6% of the Fe0;98Co0;02Si sample weightВ работе представлено исследование магнитостатических характеристик образцов FeSi и Fe0;98Co0;02Si. Обнаружено, что внесение небольшого количества примести Co (2 %) значительно влияет на температурные и полевые зависимости намагниченности монокристалла FeSi. Результаты обрабобтаны в рамках модели, учетывающей образование суперпарамагнитных кластеров железа, а также комплексов Fe-Co. Предполагается, что комплексы Fe-Co образуют ферромагнитную фазу, которая составляет примерно 0,6 % от массы образца Fe0;98Co0;02Si.
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