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Общее количество найденных документов : 45
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1.


   
    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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2.


    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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3.


    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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4.


   
    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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5.


    Valkov, V. V.
    EFFECT OF STRONG CRYSTALLINE FIELD ON THE SPECTRAL PROPERTIES OF MAGNETS WITH BIQUADRATIC EXCHANGE / V. V. VALKOV, G. N. MATSULEVA, S. G. OVCHINNIKOV // Fiz. Tverd. Tela. - 1989. - Vol. 31, Is. 6. - P. 60-68. - Cited References: 29 . - ISSN 0367-3294
РУБ Physics, Condensed Matter


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Доп.точки доступа:
MATSULEVA, G. N.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Val'kov, V. V.
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6.


   
    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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7.


   
    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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8.


   
    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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9.


    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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10.


    VALKOV, V. V.
    HUBBARD OPERATORS AND SPIN-WAVE THEORY OF HEISENBERG MAGNETS WITH ARBITRARY SPIN / V. V. VALKOV, S. G. OVCHINNIKOV // Theor. Math. Phys. - 1982. - Vol. 50, Is. 3. - P. 306-313, DOI 10.1007/BF01016463. - Cited References: 32 . - ISSN 0040-5779
РУБ Physics, Multidisciplinary + Physics, Mathematical


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Доп.точки доступа:
OVCHINNIKOV, S. G.; Овчинников, Сергей Геннадьевич; Val'kov, V. V.
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