Библиотека института физики им. Л.В. Киренского СО РАН

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Каталог книг и брошюр библиотеки ИФ СО РАН

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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sun S.-J., Hsu, Hua-Shu, Ovchinnikov S. G., Chen G.-L.
Заглавие : Theoretical investigation of magnetic properties in interfaces of magnetic nanoparticles and amorphous carbons
Место публикации : J. Magn. Magn. Mater.: Elsevier, 2017. - Vol. 432. - P.102-105. - ISSN 03048853 (ISSN), DOI 10.1016/j.jmmm.2017.02.001
Примечания : Cited References: 21. - We would like to thank the Ministry of Science and Technology, Taiwan, for the Grant No. MOST 104-2112-M-390-001 and 104-2923-M-390-001-MY3 (Shih-Jye Sun). The work is supported also by the President of Russia program of the leading scientific schools, Grant NSh-7559.2016.2.
Ключевые слова (''Своб.индексиров.''): antiferroelectricity--antiferromagnetism--ferromagnetism--molecular dynamics--nanomagnetics--nanoparticles--spin waves--antiferro-magnetic interactions--antiferromagnetics--kondo interactions--magnetic nano-particles--molecular dynamics simulations--spinwave excitation--theoretical investigations--theoretical modeling--amorphous carbon
Аннотация: Based on the experimental finding of the exchange bias in amorphous carbon samples with embedded Co nanoparticles and on the graphited character of the amorphous carbon interface confirmed by molecular dynamics simulations we have proposed the interface of graphited carbon to be antiferromagnetic. A theoretical model, which comprises the Kondo interactions in the interfaces of Co nanoparticles and the induced antiferromagnetic interactions in the graphited carbons, is employed to evaluate the ferromagnetism of the interfaces of Co nanoparticles. We have shown that the ferromagnetism of interfaces of Co nanoparticles will be enhanced by the increase of antiferromagnetic interaction as well as the increase of electron density in the graphited carbons. In particular, we found that the antiferromagnetic interactions in graphited carbons will change the spin-wave excitation in interfaces of Co nanoparticles from the quasiacoustic mode to the quasioptical one. © 2017 Elsevier B.V.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Korshunov M. M., Zakharova E. V., Nekrasov I. A., Pchelkina Z. V., Ovchinnikov S. G.
Заглавие : The Fermi surface and the role of electronic correlations in Sm2-xCexCuO4
Коллективы :
Разночтения заглавия :авие SCOPUS: The Fermi surface and the role of electronic correlations in Sm 2-xCexCuO4
Место публикации : J. Phys.: Condens. Matter: IOP PUBLISHING LTD, 2010. - Vol. 22, Is. 1. - Ст.15701. - ISSN 0953-8984, DOI 10.1088/0953-8984/22/1/015701
Примечания : Cited References: 35. - We would like to thank A A Kordyuk and I Eremin for useful discussions. The authors acknowledge support from RFBR (grants 08-02-00021, 10-02-00662, 08-02-91200 and 07-02-00226), the RAS programs on 'Low temperature quantum phenomena', 'Quantum physics of condensed matter' and 'Strongly correlated electrons solids', President of Russia (grants MK-614.2009.2 (IN) and MK-3227.2008.2 (ZP)), Scientific School (grant SS-1929.2008.2), Interdisciplinary UB-SB RAS project, Dynasty Foundation (ZP) and Russian Science Support Foundation (IN).
Предметные рубрики: T-C SUPERCONDUCTOR
IN-GAP STATES
SPIN CORRELATIONS
BAND
LA2-XSRXCUO4
EXCITATIONS
TRANSITION
EVOLUTION
SM2CUO4
OXIDES
Ключевые слова (''Своб.индексиров.''): antiferromagnetics--doping evolution--electron-doped--electronic correlation--emery model--experimental data--generalized tight bindings--high-t--hybrid scheme--magnetic orders--spin-liquid--tight binding model--two-regime--antiferromagnetism--cerium--cerium compounds--copper oxides--corundum--doping (additives)--fermi surface--fermions--tin--surfaces
Аннотация: Using a LDA + GTB (local density approximation + generalized tight-binding) hybrid scheme we investigate the band structure of the electron-doped high-T-c material Sm2-xCexCuO4. Parameters of the minimal tight-binding model for this system (the so-called three-band Emery model) were obtained within the NMTO (Nth-order muffin-tin orbital) method. The doping evolution of the dispersion and the Fermi surface in the presence of electronic correlations was investigated in two regimes of magnetic order: short-range (spin-liquid) and long-range (antiferromagnetic metal). Each regime is characterized by the specific topologies of the Fermi surfaces and we discuss their relation to recent experimental data.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kurilova A. V., Sokolov A. Е., Sukhachev A. L., Ivanova O. S., Bogdanov K. V., Baranov M. A., Dubavik A. Y.
Заглавие : Synthesizing antiferromagnetic α-Fe2O3–rGO discs: Their magnetic and magneto-optical properties
Место публикации : Bull. Russ. Acad. Sci. Phys. - 2022. - Vol. 86, Is. 5. - P.610-613. - ISSN 10628738 (ISSN), DOI 10.3103/S106287382205015X
Примечания : Cited References: 26
Аннотация: A comprehensive study is performed of the properties of hybrid structures of iron oxide and reduced graphene oxide α-Fe2O3/rGO synthesized via “wet mixing.” It is shown that hematite nanoparticles with a comparatively uniform distribution can be encapsulated in graphene layers, and the way of preparing precursors is of critical importance in shaping the magneto-optical properties of α-Fe2O3/rGO hybrid structures.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : BAYUKOV O. A., RUDENKO V. V.
Заглавие : SINGLE-ION-ANISOTROPY INDUCED BY EXCHANGE-TYPE COVALENCE EFFECTS IN RHOMBOHEDRAL ANTIFERROMAGNETICS WITH S-IONS
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1992. - Vol. 34, Is. 8. - P2665-2667. - ISSN 0367-3294
Примечания : Cited References: 15
Предметные рубрики: RESONANCE
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chzhan A.V., Vasiliev A. D., Isaeva T. N., Patrin G. S.
Заглавие : Research of features magnetic permeability and domain structures in Fe 2O3:GA crystals near the morin transition
Коллективы : Moscow International Symposium on Magnetism
Место публикации : Solid State Phenomena. - 2009. - Vol. 152-153. - С. 29-32. - ISSN 10120394 (ISSN); 390845168X (ISBN); 9783908451686 (ISBN), DOI 10.4028/www.scientific.net/SSP.152-153.29
Ключевые слова (''Своб.индексиров.''): antiferromagnetic--domain structure--hematite--morin transition--weakly ferromagnetic--antiferromagnetic materials--antiferromagnetism--capillarity--crystal impurities--crystals--ferromagnetic materials--ferromagnetic resonance--ferromagnetism--gallium--hematite--iron ores--magnetic permeability--oxide minerals--permanent magnets--antiferromagnetism--crystal impurities--ferromagnetic materials--ferromagnetism--gallium--hematite--iron compounds--magnetic materials--magnetic permeability--magnetism--afm--antiferromagnetic--antiferromagnetic domains--antiferromagnetics--basal planes--domain configurations--domain structure--morin transitions--multi-layered structure--weakly ferromagnetic--magnetic domains--magnetic domains
Аннотация: Specially picked up web-chamber is used for visualization of domain structure in hematite. An analysis of domain configuration shows, that domain structure of hematite in a basal plane represents multilayered structure which contains domains both in paralleled thickness and in the parallel basal planes. The temperature features of magnetic permeability and domain structures in Fe2O3:Ga crystals near the Morin transition are investigated. Observable changes of magnetic permeability and changes in domain structure confirm that transition from AFM to WFM occurs in the hematite with Ga impurity as transition of the first sort. Results of research of antiferromagnetic and weakly ferromagnetic resonances (AFMR and WFMR) in these compounds are presented.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Platunov M. S., Kazak N. V., Dudnikov V. A., Wilhelm F., Hen A., Diadkin V., Dovgaliuk I., Bosak A., Temerov V. L., Gudim I. A., Knyazev Yu. V., Gavrilkin S. Yu., Rogalev A., Ovchinnikov S. G.
Заглавие : Probing magnetic sublattices in multiferroic Ho0.5Nd0.5Fe3(BO3)4 single crystal using X-ray magnetic circular dichroism
Место публикации : ArXiv. - 2018. - Ст.1804.07057
Примечания : Cited References: 28. - The study was supported in part by the grants of the Russian Foundation for Basic Research (project nos. 16-32-60049, 17-02-00826) and the Foundation for Assistance to Small Innovative Enterprises (FASIE, UMNIK program). The authors thank the BM01A/ID28/ID12 beamlines staffs for help during the experiment and also gratefully acknowledge the beamtime provision (proposal HC-1804) by the ESRF.
Предметные рубрики: Antiferromagnetics
Magnetic anisotropy
Magnetoelectric effects, multiferroics
Аннотация: Using element-specific X-ray magnetic circular dichroism (XMCD) technique we have studied different magnetic sublattices in a multiferroic Ho0.5Nd0.5Fe3(BO3)4 single crystal. The XMCD measurements at the L2,3-edges of Ho and Nd, and at the Fe \emph{K}-edge have been performed at T=2K under a magnetic field up to 17 T applied along the trigonal c-axis as well as in the basal ab-plane. All three magnetic sublattices are shown to undergo a spin-reorientation transition under magnetic field applied along the c-axis. On the contrary, when magnetic field is applied in the ab-plane only the holmium atoms exhibit a magnetization jump. Thus, the element-specific magnetization curves revealed the Ho sublattice to be much stronger coupled to the Fe one than the Nd sublattice. The results demonstrate that the Ho3+ subsystem plays even more dominant role in magnetic behavior of Ho0.5Nd0.5Fe3(BO3)4 crystal than in pure HoFe3(BO3)4 crystal.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : GEKHT R. S., GRISHIN V. V.
Заглавие : ON MAGNETIC STATES IN STRONGLY FRUSTRATED 2-DIMENSIONAL ANTIFERROMAGNETICS
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1992. - Vol. 34, Is. 11. - P3557-3559. - ISSN 0367-3294
Примечания : Cited References: 5
Предметные рубрики: PHASE-TRANSITIONS
LATTICE
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : APLESNIN S. S.
Заглавие : NONPERIODIC STRUCTURES WITH A MULTICOMPONENT ORDER-PARAMETER IN FRUSTRATED ANISOTROPIC HEXAGONAL ANTIFERROMAGNETICS
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1992. - Vol. 34, Is. 12. - P3691-3694. - ISSN 0367-3294
Примечания : Cited References: 7
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Drokina T. V., Petrakovskii G. A., Keller L., Schefer J., Balaev A. D., Kartashev A. V., Ivanov D. A.
Заглавие : Modulated magnetic structure in quasi-one-dimensional clinopyroxene NaFeGe2O6
Место публикации : J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 112, Is. 1. - P121-126. - ISSN 1063-7761, DOI 10.1134/S1063776110061093
Примечания : Cited References: 18
Ключевые слова (''Своб.индексиров.''): antiferromagnetics--clinopyroxenes--field dependence--helical modulation--incommensurate magnetic structures--magnetic phase transitions--monoclinic compound--order-disorder--orientation phase transitions--quasi-one-dimensional--temperature behavior--temperature dependence--wave vector--antiferromagnetism--magnetic devices--magnetic structure--phase transitions--crystallography
Аннотация: The magnetic structure of the NaFeGe2O6 monoclinic compound has been experimentally investigated using the elastic scattering of neutrons. At a temperature of 1.6 K, an incommensurate magnetic structure has been observed in the form of an antiferromagnetic helix formed by a pairs of the spins of the Fe3+ ions with helical modulation in the ac plane of the crystal lattice. The wave vector of the magnetic structure has been determined and its temperature behavior has been studied. The analysis of the temperature dependences of the specific heat and susceptibility, as well as the isotherms of the field dependence of the magnetization, has revealed the existence of not only the order-disorder magnetic phase transition at the point T (N) = 13 K, but also an additional magnetic phase transition at the point T (c) = 11.5 K, which is assumingly an orientation phase transition.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : APLESNIN S. S.
Заглавие : MAGNETIC-PROPERTIES OF ANTIFERROMAGNETICS WITH FLUCTUATIONALLY INTERACTING PLANES
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1993. - Vol. 35, Is. 8. - P2105-2109. - ISSN 0367-3294
Примечания : Cited References: 5
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