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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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Cherkasskii, M.
Nutation resonance in ferromagnets / M. Cherkasskii, M. Farle, A. Semisalova // Phys. Rev. B. - 2020. - Vol. 102, Is. 18. - Ст. 184432, DOI 10.1103/PhysRevB.102.184432. - Cited References: 42. - We thank Benjamin Zingsem for helpful discussions. In part funded by Research Grant No. 075-15-2019-1886 from the Government of the Russian Federation, the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation), Projects No. 405553726 (CRC/TRR 270) and No. 392402498 (SE 2853/1-1) . - ISSN 2469-9950
Кл.слова (ненормированные):
Ferromagnetism -- Magnets -- Resonance -- Analytical expressions -- Applied magnetic fields -- Ferromagnets -- Frequency dependent susceptibility -- Inertial dynamics -- Landau-Lifshitz-Gilbert equations -- Microwave excitations -- Ferromagnetic materials
Аннотация: The inertial dynamics of magnetization in a ferromagnet is investigated theoretically. The analytically derived dynamic response upon microwave excitation shows two peaks: ferromagnetic and nutation resonances. The exact analytical expressions of frequency and linewidth of the magnetic nutation resonance are deduced from the frequency-dependent susceptibility determined by the inertial Landau-Lifshitz-Gilbert equation. The study shows that the dependence of nutation linewidth on the Gilbert precession damping has a minimum, which becomes more expressive with increase of the applied magnetic field.

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Держатели документа:
Department of General Physics 1, St. Petersburg State University, St. Petersburg, 199034, Russian Federation
Faculty of Physics and Center of Nanointegration (CENIDE), University of Duisburg-Essen, Duisburg, 47057, Germany
Kirensky Institute of Physics, Federal Research Center, Ksc Sb Ras, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Farle, M.; Фарле, Михаель; Semisalova, A.
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Commensurate spin density wave in LaFeAsO: A local probe study / H. H. Klauss [et al.] // Phys. Rev. Lett. - 2008. - Vol. 101, Is. 7. - Ст. 77005, DOI 10.1103/PhysRevLett.101.077005. - Cited References: 28 . - ISSN 0031-9007

РУБ Physics, Multidisciplinary
Рубрики:
LAYERED QUATERNARY COMPOUND
SUPERCONDUCTIVITY
Кл.слова (ненормированные):
Arsenic compounds -- Chlorine compounds -- Ferromagnetism -- Magnetic materials -- Magnetic properties -- Magnetization -- Magnets -- Molybdenum -- Phase transitions -- Spin density waves -- Commensurate spin density wave -- External fields -- Magnetic orders -- Muon spin relaxations -- Order parameter -- Ordered moments -- Probe measurements -- Ssbauer spectroscopy -- Structural phase transition -- Sublattice magnetizations -- Temperature dependences -- Spin dynamics
Аннотация: We present a detailed study on the magnetic order in the undoped mother compound LaFeAsO of the recently discovered Fe-based superconductor LaFeAsO(1-x)F(x). In particular, we present local probe measurements of the magnetic properties of LaFeAsO by means of (57)Fe Mossbauer spectroscopy and muon-spin relaxation in zero external field along with magnetization and resistivity studies. These experiments prove a commensurate static magnetic order with a strongly reduced ordered moment of 0.25(5)mu(B) at the iron site below T(N)=138 K, well separated from a structural phase transition at T(S)=156 K. The temperature dependence of the sublattice magnetization is determined and compared to theory. Using a four-band spin density wave model both, the size of the order parameter and the quick saturation below T(N) are reproduced.

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Держатели документа:
[Klauss, H. -H.] Tech Univ Dresden, Inst Festkorperphys, D-01069 Dresden, Germany
Amato, A.] Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland
Buechner, B.] Leibniz Inst Festkorper & Weskstoffforsch IFW, D-01171 Dresden, Germany
Kraken, M.] Tech Univ Carolo Wilhelmina Braunschweig, Inst Phys Kondensierten Mat, D-38106 Braunschweig, Germany
Eremin, I.] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
[Korshunov, M. M.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Eremin, I.] Tech Univ Carolo Wilhelmina Braunschweig, Inst Math Phys, D-38106 Braunschweig, Germany
Institut fur Festkorperphysik, TU Dresden, D-01069 Dresden, Germany
Laboratory for Muon-Spin Spectroscopy, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
Leibniz-Institut fur Festkorper- und Werkstoffforschung (IFW) Dresden, D-01171 Dresden, Germany
Institut fur Physik der Kondensierten Materie, TU Braunschweig, D-38106 Braunschweig, Germany
Max-Planck-Institut fur Physik Komplexer Systeme, D-01187 Dresden, Germany
L.V. Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russian Federation
Institut fur Mathematische Physik, TU Braunschweig, D-38106 Braunschweig, Germany

Доп.точки доступа:
Klauss, H. H.; Luetkens, H.; Klingeler, R.; Hess, C.; Litterst, F. J.; Kraken, M.; Korshunov, M. M.; Коршунов, Максим Михайлович; Eremin, I.; Drechsler, S. L.; Khasanov, R.; Amato, A.; Hamann-Borrero, J. E.; Leps, N.; Kondrat, A.; Behr, G.; Werner, J.; Buchner, B.
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Edelman, I.
Oxide glasses with magnetic nanoparticles: transparent magnets (Faraday rotation and electron magnetic resonance studies) / I. . Edelman, J. . Kliava // Phys. Status Solidi B. - 2009. - Vol. 246, Is. 10. - P. 2216-2231, DOI 10.1002/pssb.200945169. - Cited References: 87. - This work is supported in part by RFBR-CNRS joint project, grant No 07-02-92174. We are grateful to E. Petrakovskaja and O. Ivanova for measuring and discussing, respectively, the EMR spectra in thermally treated samples and the FR spectral and magnetic field dependences. . - ISSN 0370-1972

РУБ Physics, Condensed Matter
Рубрики:
SPIN-HAMILTONIAN PARAMETERS
   SINGLE-DOMAIN PARTICLES
   SUPERPARAMAGNETIC RESONANCE
   CRYSTALLIZATION BEHAVIOR
   FERRIMAGNETIC RESONANCE
   PARAMAGNETIC-RESONANCE
   TEMPERATURE-DEPENDENCE
   COMPUTER-SIMULATIONS
   FINE PARTICLES
   BORATE GLASSES
Аннотация: In the first part of this paper we outline the state of the art in the field of magnetic nanoparticles in oxide glasses. We describe the theoretical background of two complementary techniques used for the studies of the state of paramagnetic ions, clusters and magnetic particles in a diamagnetic matrix, viz., magnetooptical Faraday rotation (FR) and electron magnetic resonance (EMIR) and we overview previous results obtained with these techniques for several glass systems. In the second part, we highlight the case of potassium-alumina-borate glasses - a glassy system where doping with paramagnetic oxides results in formation of magnetic particles at very low contents of paramagnetic additions: Fe(2)O(3) and MnO. In the special case when the ratio of the iron and manganese oxides in the charge is 3/2, magnetic nanoparticles with characteristics close to those of manganese ferrite are formed already at the first stage of the glass preparation. After thermal treatment all glasses show FR and EMR spectra attesting to the presence of superparamagnetic nanoparticles, characterized by relatively broad size and shape distributions. The formation of magnetic nanoparticles confers to these glasses magnetic and magnetooptical properties typical of magnetically ordered substances. At the same time, the glasses remain transparent in a part of the visible and near infrared spectral range and display a high FR value. Such properties make them particularly interesting for use as new media for various magneto-optical devices. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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Держатели документа:
[Edelman, Irina] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Kliava, Janis] Univ Bordeaux 1, Ctr Phys Mol Opt & Hertzienne, CNRS, UMR 5798, F-33405 Talence, France
ИФ СО РАН
L.V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 38, 660036 Krasnoyarsk, Russian Federation
Centre de Physique Moleculaire Optique et Hertzienne, Universite Bordeaux1-CNRS, UMR 5798, 351 cours de la Liberation, 33405 Talence cedex, France

Доп.точки доступа:
Kliava, J.; RFBR-CNRS [07-02-92174]
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Effect of copper on the properties of Pr-Dy-Fe-Co-B sintered magnets / E. N. Kablov [et al.] // Russ. Metall. (Metally). - 2014. - Vol. 2014, Is. 1. - P. 55-59, DOI 10.1134/S0036029514010078. - Cited References: 15 . - ISSN 0036-0295. - ISSN 1555-6255
Аннотация: The effect of copper on the properties of magnets (Pr0.52Dy0.48)13(Fe65Co0.35)80.3 - xCuxB6.7 (x = 0-10) has been studied. Alloying with copper is shown to decrease the sintering temperature and to increase the content of the principal (Pr,Dy)2(Fe,Co)14B magnetic phase. For compositions with x = 1.3-3.3, copper is found to affect the value and sign of the temperature induction coefficient (TIC). It is shown that the effect of copper on the TIC is determined by the substitution of copper ions for iron ions in lattice sites, which are coupled via an antiferromagnetic exchange interaction. © 2014 Pleiades Publishing, Ltd.

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Публикация на русском языке Влияние меди на свойства спеченных магнитов Pr-Dy-Fe-Co-B [Текст] / Е. Н. Каблов [и др.] // Металлы : НПП "ЭЛИЗ", 2014. - № 1. - С. 65-69

Держатели документа:
All-Russia Scientific Research Institute of Aviation Materials, ul. Radio 17, Moscow, 105005, Russian Federation
Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, bld. 38, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Kablov, E. N.; Piskorskii, V. P.; Valeev, R. A.; Volkov, N. V.; Волков, Никита Валентинович; Davydova, E. A.; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Balaev, D. A.; Балаев, Дмитрий Александрович; Semenov, S. V.; Семёнов, Сергей Васильевич
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Effective easy-axis anisotropy of the two-sublattice single-chain magnet with twisted easy planes / M. S. Shustin, M. N. Potkina // Nanosyst. - Phys. Chem. Math. - 2020. - Vol. 11, Is. 6. - P. 659-665 ; Наносистемы: физ., хим., матем., DOI 10.17586/2220-8054-2020-11-6-659-665. - Cited References: 15. - S. M. S. expresses deep gratitude to V. V. Val'kov. The main results of this work were with substantial use of the theory developed by him (see for example articles [10], [12] and references given in them), as well as on his previous advice. S. M. S. and M. N. P. acknowledges the support from the Foundation for the Advancement of Theoretical Physics and Mathematics "BASIS" (Grants No. 20-1-4-25-1 and 19-1-1-12-2, respectively) . - ISSN 2220-8054. - ISSN 2305-7971

РУБ Nanoscience & Nanotechnology

Кл.слова (ненормированные):
single-chain magnets -- magnonic spectrum -- strong single-ion anisotropy
Аннотация: An analytical solution for the spin-wave spectrum of the two-sublattice 1D magnet with SA = SB = 1 and twisting easy planes has been obtained. Such planes are mutually twisted by an angle φ relative to each other. For the case of mutually orthogonal easy planes φ = π/2, the spectrum vs. quasi-momentum dependence has been compared with that of an easy-axis magnet with the easy axis aligned along the line of intersection of the planes. An analogy of the spectra of the models has been shown, indicating the possibility of the effective easy axis anisotropy in easy-plane two-sublattice single-chain magnets.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia.
ITMO Univ, Kronverkskiy 49, St Petersburg 197101, Russia.
St Petersburg State Univ, St Petersburg 198504, Russia.
Univ Iceland, Sci Inst, IS-107 Reykjavik, Iceland.
Univ Iceland, Fac Phys Sci, IS-107 Reykjavik, Iceland.

Доп.точки доступа:
Shustin, M. S.; Шустин, Максим Сергеевич; Potkina, M. N.; Foundation for the Advancement of Theoretical Physics and Mathematics "BASIS" [20-1-4-25-1, 19-1-1-12-2]

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Effects of correlated inhomogeneities of the spectral properties of disordered ferro magnets and superlattices [Text] / V. A. Ignatchenko // IV Euro-Asian Symposium "Trends in MAGnetism" Nanospintronics (EASTMAG-2010). School for young scientist "Spintronics" : June 28 - Lule 2, 2010"Book of abstracts. - Ekaterinburg, 2010. - P. 300 (Invited)

РИНЦ

Доп.точки доступа:
Ignatchenko, V.A.; Euro-Asian Symposium "Trends in MAGnetism"(4 ; 2010 ; Jun.-Jul. ; Ekaterinburg)"Trends in MAGnetism", Euro-Asian Symposium(4 ; 2010 ; Jun.-Jul. ; Ekaterinburg); Уральское отделение РАН
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Flux pinning docking interfaces in satellites using superconducting foams as trapped field magnets / M. R. Koblischka, A. Koblischka-Veneva, D. Gokhfeld [et al.] // IEEE Trans. Appl. Supercond. - 2022. - Vol. 32, Is. 4. - Ст. 4900105, DOI 10.1109/TASC.2022.3147734. - Cited References: 44. - This work was supported in part by SUPERFOAM international project funded by ANR and DFG under Grants ANR-17-CE05-0030 and DFG-ANR Ko2323-10. . - ISSN 1051-8223. - ISSN 1558-2515

РУБ Engineering, Electrical & Electronic + Physics, Applied
Рубрики:
BULK
RECONFIGURATION
MAGNETIZATION
Кл.слова (ненормированные):
Superconducting magnets -- Satellites -- Yttrium barium copper oxide -- Magnetomechanical effects -- Magnetic fields -- Superconducting coils -- Magnetometers -- Flux-pinning docking interface -- Foams -- Trapped field magnets -- YBCO
Аннотация: Flux-Pinning Docking Interfaces (FPDI) in satellite systems were developed using bulk superconductors and permanent magnets in previous works. However, such FPDIs have limited magnetic field strength, consist of heavy-weight material, and can only be used with a single purpose, i.e., as chasing or docking satellite. Replacing the magnetic material in the FPDI by a trapped field (TF)-magnet would enable the interface to operate for both purposes, i.e., generating a (stronger) magnetic field and trapping it. We show the requirements for such a system and discuss the possible gains when using a TF-FPDI in satellites. To reduce the system weight, the use of superconducting foams as superconducting material is discussed in detail. Furthermore, the use of superconducting foams, the size of which can be easily upscaled, may also comprise the function of the damping material, so even more weight could be saved for the payload.

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Держатели документа:
Saarland Univ, Dept Expt Phys, D-66041 Saarbrucken, Germany.
Shibaura Inst Technol, Tokyo 1358548, Japan.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Tokyo Univ Sci, Dept Phys, Tokyo 1628601, Japan.
Univ Lorraine, GREEN, F-54000 Nancy, France.

Доп.точки доступа:
Koblischka, Michael R.; Koblischka-Veneva, Anjela; Gokhfeld, D. M.; Гохфельд, Денис Михайлович; Naik, S. Pavan Kumar; Nouailhetas, Quentin; Berger, Kevin; Douine, Bruno; ANRFrench National Research Agency (ANR); DFGGerman Research Foundation (DFG)European Commission [ANR-17-CE05-0030, DFG-ANR Ko2323-10]
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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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10.

Kuzmin, E. V.
Ground-state and excitation spectrum of disordered heisenberg magnets / E. V. Kuzmin // Zhurnal Eksperimentalnoi Teor. Fiz. - 1984. - Vol. 86, Is. 3. - P. 981-994. - Cited References: 21 . - ISSN 0044-4510

РУБ Physics, Multidisciplinary

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Доп.точки доступа:
Кузьмин, Евгений Всеволодович
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