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A neutron scattering and mu SR investigation of the magnetic phase transitions of CuB2O4 / M. . Boehm [et al.] // Physica B. - 2002. - Vol. 318: 6th Patras-University Euroconference on Properties of Condensed Matter Probed with X-Ray Scattering-Electron Correlations and Magnetism (SEP 21-25, 2001, PATRAS, GREECE), Is. 4. - P. 277-281, DOI 10.1016/S0921-4526(02)00788-3. - Cited References: 8 . - ISSN 0921-4526

РУБ Physics, Condensed Matter
Рубрики:
COPPER METABORATE
Кл.слова (ненормированные):
magnetic soliton lattice -- Dzyaloshinskii-Moriya interaction -- neutron diffraction -- mu SR
Аннотация: We have investigated the magnetic ground state in CuB2O4, copper metaborate, by means of neutron diffraction and muSR measurements. At T-N = 21 K CuB2O4 undergoes a second-order phase transition from a paramagnetic to an antiferromagnetic commensurate state followed by a second transition at T* = 10 K where the two magnetic sublattices form a soliton lattice, as reported earlier. We give a detailed analysis of the magnetic structure in the commensurate phase which is found to be different from the one published recently. New experimental results are presented which show the existence of a third transition below T approximate to 1.8 K. The magnetic structure remains incommensurate at very low temperatures, but a re-distribution of the magnetic intensities is observed in the neutron diffraction data set which suggests that the phases between the Cu2+ spins are changed. (C) 2002 Elsevier Science B.V. All rights reserved.

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Держатели документа:
Inst Laue Langevin, F-38042 Grenoble 9, France
Swiss Fed Inst Technol, Lab Neutron Scattering, CH-5232 Villigen, Switzerland
Paul Scherrer Inst, CH-5232 Villigen, Switzerland
Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland
Paul Scherrer Inst, Swiss Light Source, CH-5232 Villigen, Switzerland
RAS, Inst Phys SB, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Boehm, M.; Roessli, B.; Schefer, J.; Ouladdiaf, B.; Amato, A.; Baines, C.; Staub, U.; Petrakovskii, G. A.; Петраковский, Герман Антонович
}
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    An effect of reduced S-rich fluids on diamond formation under mantle-slab interaction / Y. V. Bataleva [et al.] // Lithos. - 2019. - Vol. 336-337. - P. 27-39, DOI 10.1016/j.lithos.2019.03.027. - Cited References: 73. - This work was supported by the Russian Science Foundation under Grant No. 14-27-00054 and a state assignment of IGM SB RAS. The authors thank S. Ovchinnikov for his assistance in implementation of the Mossbauer spectroscopy measurements. . - ISSN 0024-4937
   Перевод заглавия: Влияние восстановленных S-обогащенных флюидов на образование алмаза при взаимодействии мантиевых плит
Кл.слова (ненормированные):
Sulfur-rich fluid -- Iron carbide -- Diamond -- Mantle sulfides -- High-pressure experiment
Аннотация: Experimental study, dedicated to understanding the effect of S-rich reduced fluids on the diamond-forming processes under subduction settings, was performed using a multi-anvil high-pressure split-sphere apparatus in Fe3C-(Mg,Ca)CO3-S and Fe0-(Mg,Ca)CO3-S systems at the pressure of 6.3 GPa, temperatures in the range of 900–1600 °C and run time of 18–60 h. At the temperatures of 900 and 1000 °C in the carbide-carbonate-sulfur system, extraction of carbon from cohenite through the interaction with S-rich reduced fluid, as well as C0-producing redox reactions of carbonate with carbide were realized. As a result, graphite formation in assemblage with magnesiowüstite, cohenite and pyrrhotite (±aragonite) was established. At higher temperatures (≥1100 °C) formation of assemblage of Fe3+-magnesiowüstite and graphite was accompanied by generation of fO2-contrasting melts - metal-sulfide with dissolved carbon (Fe-S-C) and sulfide-oxide (Fe-S-O). In the temperature range of 1400–1600 °C spontaneous diamond nucleation was found to occur via redox interactions of carbide or iron with carbonate. It was established, that interactions of Fe-S-C and Fe-S-O melts as well as of Fe-S-C melt and magnesiowüstite, were С0-forming processes, accompanied by disproportionation of Fe. These resulted in the crystallization of Fe3+-magnesiowüstite+graphite assemblage and growth of diamond. We show that a participation of sulfur in subduction-related elemental carbon-forming processes results in sharp decrease of partial melting temperatures (~300 °C), reducting the reactivity of the Fe-S-C melt relatively to FeC melt with respect to graphite and diamond crystallization and decrease of diamond growth rate.

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Держатели документа:
Sobolev Institute of Geology and Mineralogy, Mineralogy Siberian Branch of the Russian Academy of Sciences, Academican Koptyug Ave., 3, Novosibirsk, 630090, Russian Federation
Novosibirsk State University, Pirogova str., 2, Novosibirsk, 630090, Russian Federation
Kirensky Institute of Physics, Siberian Branch of Russian Academy of Sciences, Akademgorodok 50, bld. 38, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Bataleva, Y. V.; Palyanov, Y. N.; Borzdov, Y. M.; Novoselov, I. D.; Bayukov, O. A.; Баюков, Олег Артемьевич
}
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Analysis of interaction of laser-radiation pulses with metal magnetostrictive film / G. P. Berman [et al.] // Solid State Commun. - 1988. - Vol. 67, Is. 12. - P. 1203-1207, DOI 10.1016/0038-1098(88)91084-8. - Cited References: 12 . - ISSN 0038-1098

РУБ Physics, Condensed Matter

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
ИФ СО РАН
Доп.точки доступа:
Berman, G. P.; Frolov, G. I.; Фролов, Георгий Иванович; Seredkin, V. A.; Середкин, Виталий Александрович; Yakovchuk, V. Yu.; Яковчук, Виктор Юрьевич
}
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Aplesnin, S. S.
Anomalies in magnetoresistance and in the bulk modulus for ferromagnetics with four-spin exchange interaction on the Kondo lattice / S. S. Aplesnin, N. I. Piskunova // J. Phys.: Condens. Matter. - 2006. - Vol. 18, Is. 29. - P. 6859-6868, DOI 10.1088/0953-8984/18/29/023. - Cited References: 29 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
MIXED-VALENCE MANGANITES
   PHASE-SEPARATION
   LA1-XSRXMNO3
   BEHAVIOR
   PECULIARITIES
   TRANSITION
Кл.слова (ненормированные):
Elastic moduli -- Electric resistance -- Ferromagnetism -- Function evaluation -- Paramagnetism -- Transceivers -- Adiabatic approximation -- Kondo lattice -- Paramagnetic state -- Ring exchange -- Magnetoresistance
Аннотация: The temperature dependence of resistivity and the bulk modulus are calculated on the Kondo lattice, with ring exchange between localized spins, using the spin-polaron and adiabatic approximation. Peak and zero values of the bulk modulus as functions of temperature and concentration are determined below the temperature of the transition to the paramagnetic state. The effects of the nearest order between transverse spin components and a value of the ring exchange between localized spins on magnetoresistivity are estimated.

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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
MF Reshetneva Aircosm Siberian State Univ, Krasnoyarsk 660014, Russia
ИФ СО РАН
L v Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
M F Reshetneva Aircosmic Siberian State University, Krasnoyarsk, 660014, Russian Federation

Доп.точки доступа:
Piskunova, N. I.; Аплеснин, Сергей Степанович
}
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Valkov, V. V.
Anomalies in the quantum excitation spectrum of a magnetic material with a strong quasi-particle interaction / V. V. Valkov, T. A. Valkova // JETP Letters. - 1990. - Vol. 52, Is. 11. - P. 589-592. - Cited References: 6 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
SUPERCONDUCTIVITY
Аннотация: It is shown in a nonlinear theory that the quantum spectrum of excitations becomes analogous to the spectrum of excitations of a quantum Bose liquid in the case of a highly anisotropic ferromagnet, with a large number of interacting quasiparticles.

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Доп.точки доступа:
Valkova, T. A.; Val'kov, V. V.
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B-11-NMR study of low-temperature phase transition in CuB2O4 / Y. . Yasuda [et al.] // J. Phys.: Condens. Matter. - 2007. - Vol. 19: International Conference on Highly Frustrated Magnetism (AUG 15-19, 2006, Osaka, JAPAN), Is. 14. - Ст. 145277, DOI 10.1088/0953-8984/19/14/145277. - Cited References: 10 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
COPPER METABORATE
Кл.слова (ненормированные):
Copper compounds -- Low temperature effects -- Magnetic field effects -- Nuclear magnetic resonance -- B T phase diagram -- Dzialoshinskii Moriya interaction -- Phase transitions
Аннотация: The material CuB2O4 presents a variety of phases in the B - T phase diagram, caused by the frustration and the Dzialoshinskii - Moriya interaction. In order to investigate the nature of the phase transitions, a B-11- NMR experiment on CuB2O4 has been performed under an applied magnetic field along the a- axis down to 0.4 K. A new incommensurate - incommensurate phase transition has been found at 0.8 K under a field of 0.5 T. Further, another phase transition has been observed at 4.7 K under a field of about 2 T, which is consistent with the transition reported by the neutron diffraction experiment.

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Держатели документа:
Univ Fukui, Dept Appl Phys, Fukui 9108507, Japan
Japan Adv Inst Sci & Technol, Ishikawa 9231292, Japan
RAS, SB, Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Department of Applied Physics, University of Fukui, Fukui 910-8507, Japan
Japan Advanced Institute of Science and Technology, Ishikawa 923-1292, Japan
Institute of Physics, SB RAS, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Yasuda, Y.; Nakamura, H.; Fujii, Y.; Kikuchi, H.; Chiba, M.; Yamamoto, Y.; Hori, H.; Petrakovskii, G. A.; Петраковский, Герман Антонович; Popov, M. A.; Bezmaternykh, L. N.
}
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Biomedical application of biogenic ferrihydrite nanoparticles / C. G. Chilom [et al.] // Rom. J. Phys. - 2017. - Vol. 62, Is. 3-4. - Ст. 701. - P. - Cited References: 13. - The work was accomplished with the financial support of the IUNC Structural and spectrophotometric characterization of biogenic systems, Grants 4-1069-2009/2014 and 04-4-1121-2015/2017. Biological studies were accomplished with the financial support of Romanian National Authority for Scientific Research, CNDI-UEFISCDI, Project number: PN 16 42 02 03. The authors are very much indebted to Virginia Dincă and Gabriel Prodan for TEM images and to Gabriel Socol for FT-IR spectra. . - ISSN 1221-146X
Кл.слова (ненормированные):
Bacterial nanoparticles -- Albumins-ferrihydrite nanoparticles interaction -- Cell lines -- Cytotoxicity -- Hemolytic effect
Аннотация: Spectroscopic properties of biogenic ferrihydrite nanoparticles, produced by Klebsiella oxytoca, were investigated. Their interaction with two serum albumins was moderate. A very weak stabilization of protein structure to denaturation, in the presence of nanoparticles, was put in evidence. Nanoparticle cytotoxicity and their hemolytic effect were studied on healthy and tumour cells.

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Держатели документа:
Department of Electricity, Physics of Solid and Biophysics, Faculty of Physics, University of Bucharest, Romania
Joint Institute for Nuclear Research Dubna, Russian Federation
Department of Nuclear Physics, National Research Institute for Physics and Nuclear Engineering Horia Hulubei (IFIN-HH), Bucharest, Romania
Department of Life and Environmental Physics, National Research Institute for Physics and Nuclear Engineering Horia Hulubei (IFIN-HH), Bucharest, Romania
Siberian Federal University, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Chilom, C. G.; Gazdaru, D. M.; Balasoiu, M.; Bacalum, M.; Stolyar, S. V.; Столяр, Сергей Викторович; Popescu, A. I.
}
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Breaking of the Selection Rules for Optical Transitions in the Dielectric PrFe3(BO3)(4) Crystal by a Praseodymium-Iron Exchange Interaction / M. N. Popova [et al.] // Phys. Rev. Lett. - 2009. - Vol. 102, Is. 18. - Ст. 187403, DOI 10.1103/PhysRevLett.102.187403. - Cited References: 26. - This work was supported in part by the RFBR under Grants No. 07-02-01185 and No. 07-02-00704 and by the Russian Academy of Sciences under the Programs for Basic Research. . - ISSN 0031-9007

РУБ Physics, Multidisciplinary
Рубрики:
SINGLE-CRYSTAL
   GDFE3(BO3)(4)
   PHASE
   DYFE3(BO3)(4)
   SPECTRUM
   LINES
Кл.слова (ненормированные):
Magnetic ordering temperatures -- Optical spectrum -- Order parameters -- Point symmetries -- Selection rules -- Exchange interactions -- Neon -- Praseodymium -- Single crystals -- Crystal symmetry
Аннотация: We report on the emergence of new lines in the optical spectrum of the PrFe3(BO3)(4) single crystal at the magnetic ordering temperature. The transitions between singlet crystal-field sublevels of Pr3+ ion with the same transformational properties, strictly forbidden for the trigonal D-3 point symmetry of this ion in PrFe3(BO3)(4), appear below the Neel temperature and grow in intensity as a square of the order parameter. We show that the phenomenon originates from the mixing of wave functions of different Pr3+ sublevels by the Pr-Fe exchange interaction.

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Держатели документа:
[Popova, M. N.
Stanislavchuk, T. N.] Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Region, Russia
[Malkin, B. Z.] Kazan VI Lenin State Univ, Kazan 420008, Russia
[Bezmaternykh, L. N.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute of Spectroscopy, Russian Academy of Sciences, 142190 Troitsk, Moscow region, Russian Federation
Kazan State University, 420008 Kazan, Russian Federation
L.V. Kirensky Institute of Physics, Siberian Branch, RAS, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Popova, M. N.; Stanislavchuk, T. N.; Malkin, B. Z.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; RFBR [07-02-01185, 07-02-00704]; Russian Academy of Sciences
}
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Brownian dynamics of the self-assembly of complex nanostructures in the field of quasi-resonant laser radiation / V. S. Kornienko [et al.] // Photonics Nanostruc. Fundam. Appl. - 2019. - Vol. 35. - Ст. 100707, DOI 10.1016/j.photonics.2019.100707. - Cited References: 32. - The reported study was funded by Russian Science Foundation (Grant 18-72-00003 ). V.V. Slabko is grateful for the support from the Ministry of Education and Science of the Russian Federation (Grant 3.6341.2017/VU ). . - ISSN 1569-4410
Кл.слова (ненормированные):
Dipole-dipole interaction -- Laser field -- Brownian dynamics -- Self-assembly of nanostructures -- Colloidal crystals
Аннотация: Self-assembly of nanoparticles under the action of laser field can be an universal method for the formation of nanostructures with specific properties for application in sensorics and nanophotonics. For prognosis of the self-assembly processes, the model of movement of an ensemble of nanoparticles in a viscous media under the action of laser radiation with the account for interaction of laser-induced polarizations and Brownian dynamics is developed. This model is applied to the investigation of the self-assembly process of a triple of nanoparticles into three-particle structure with a predetermined geometry.Two specific cases of formation of nanostructure from a preliminarily formed pair of particles are studied: either for the pair fixed in space or from the unfixed pair of nanoparticles. The geometry of resulting nanostructures is shown to be determined by the polarization direction of laser radiation and the laser wavelength. Under proper choice of these parameters the formation of structures is shown to be highly efficient. E. g., maximum probability of structures formation is as hig as 36–46% per single laser pulse of 10 ns duration. © 2019 Elsevier B.V.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
Department of Computational Mathematics, Institute of Computational Modeling of Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Laboratory of Coherent Optics, Kirensky Institute of Physics Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Kornienko, V. S.; Tsipotan, A. S.; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Slabko, V. V.
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10.

ZAMKOVA, N. G.
CALCULATION OF BX4 INTERACTION CONSTANTS IN K2SO4-TYPE CRYSTALS / N. G. ZAMKOVA, V. I. ZINENKO // Fiz. Tverd. Tela. - 1992. - Vol. 34, Is. 9. - P. 2735-2747. - Cited References: 29 . - ISSN 0367-3294

РУБ Physics, Condensed Matter
Рубрики:
SUCCESSIVE PHASE-TRANSITIONS
K2COBR4
K2SEO4

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Доп.точки доступа:
ZINENKO, V. I.
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