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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Klauss H. H., Luetkens H., Klingeler R., Hess C., Litterst F. J., Kraken M., Korshunov M. M., Eremin I., Drechsler S. L., Khasanov R., Amato A., Hamann-Borrero J. E., Leps N., Kondrat A., Behr G., Werner J., Buchner B.
Заглавие : Commensurate spin density wave in LaFeAsO: A local probe study
Место публикации : Phys. Rev. Lett.: AMER PHYSICAL SOC, 2008. - Vol. 101, Is. 7. - Ст.77005. - ISSN 0031-9007, DOI 10.1103/PhysRevLett.101.077005
Примечания : Cited References: 28
Предметные рубрики: LAYERED QUATERNARY COMPOUND
SUPERCONDUCTIVITY
Ключевые слова (''Своб.индексиров.''): 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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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : MARTYNOV S. N.
Заглавие : CORRELATION-FUNCTIONS AND ELECTRON-SPIN-RESONANCE LINEWIDTH OF TWO-DIMENSIONAL HEISENBERG MAGNETS
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1986. - Vol. 28, Is. 10. - P3006-3011. - ISSN 0367-3294
Примечания : Cited References: 15
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : APLESNIN S. S.
Заглавие : CRITICAL-BEHAVIOR OF DILUTED ISING MAGNETS WITH ANISOTROPIC EXCHANGE INTERACTION DISTRIBUTION
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1984. - Vol. 26, Is. 11. - P3355-3361. - ISSN 0367-3294
Примечания : Cited References: 19
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kablov E. N., Piskorskii V. P., Valeev R. A., Volkov N. V., Davydova E. A., Shaikhutdinov K. A., Balaev D. A., Semenov S. V.
Заглавие : Effect of copper on the properties of Pr-Dy-Fe-Co-B sintered magnets
Место публикации : Russ. Metall. (Metally): Pleiades Publishing, 2014. - Vol. 2014, Is. 1. - P.55-59. - ISSN 0036-0295, DOI 10.1134/S0036029514010078. - ISSN 1555-6255
Примечания : Cited References: 15
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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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Valkov V. V., MATSULEVA G. N., Ovchinnikov S. G.
Заглавие : EFFECT OF STRONG CRYSTALLINE FIELD ON THE SPECTRAL PROPERTIES OF MAGNETS WITH BIQUADRATIC EXCHANGE
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1989. - Vol. 31, Is. 6. - P60-68. - ISSN 0367-3294
Примечания : Cited References: 29
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shustin M. S., Potkina M. N.
Заглавие : Effective easy-axis anisotropy of the two-sublattice single-chain magnet with twisted easy planes
Коллективы : Foundation for the Advancement of Theoretical Physics and Mathematics "BASIS" [20-1-4-25-1, 19-1-1-12-2]
Место публикации : Nanosyst. - Phys. Chem. Math. - 2020. - Vol. 11, Is. 6. - P.659-665. - ISSN 2220-8054, DOI 10.17586/2220-8054-2020-11-6-659-665; Наносистемы: физ., хим., матем. - ISSN 2305-7971(eISSN)
Примечания : 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)
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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7.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Ignatchenko V.A.
Заглавие : Effects of correlated inhomogeneities of the spectral properties of disordered ferro magnets and superlattices
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium, Уральское отделение РАН
Место публикации : 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)
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Koblischka, Michael R., Koblischka-Veneva, Anjela, Gokhfeld D. M., Naik, S. Pavan Kumar, Nouailhetas, Quentin, Berger, Kevin, Douine, Bruno
Заглавие : Flux pinning docking interfaces in satellites using superconducting foams as trapped field magnets
Коллективы : ANRFrench National Research Agency (ANR); DFGGerman Research Foundation (DFG)European Commission [ANR-17-CE05-0030, DFG-ANR Ko2323-10]
Место публикации : IEEE Trans. Appl. Supercond. - 2022. - Vol. 32, Is. 4. - Ст.4900105. - ISSN 1051-8223, DOI 10.1109/TASC.2022.3147734. - ISSN 1558-2515(eISSN)
Примечания : 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.
Предметные рубрики: BULK
RECONFIGURATION
MAGNETIZATION
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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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kuzmin E. V.
Заглавие : Ground-state and excitation spectrum of disordered heisenberg magnets
Место публикации : Zhurnal Eksperimentalnoi Teor. Fiz. - 1984. - Vol. 86, Is. 3. - P.981-994. - ISSN 0044-4510
Примечания : Cited References: 21
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : VALKOV V. V., OVCHINNIKOV S. G.
Заглавие : HUBBARD OPERATORS AND SPIN-WAVE THEORY OF HEISENBERG MAGNETS WITH ARBITRARY SPIN
Место публикации : Theor. Math. Phys.: PLENUM PUBL CORP, 1982. - Vol. 50, Is. 3. - P306-313. - ISSN 0040-5779, DOI 10.1007/BF01016463
Примечания : Cited References: 32
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