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

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

в найденном

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>A=Popov, M. A.$<.>)

Общее количество найденных документов : 41
Показаны документы с 1 по 20

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.

WOS,
Scopus,
Читать в сети ИФ
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.
}
Найти похожие

Calculation of the energy of binding of titanium and scandium complexes to the surface of carbon nanotubes / A. A. Kuzubov [et al.] // Russ. J. Phys. Chem. B. - 2009. - Vol. 3, Is. 4. - P. 679-683, DOI 10.1134/S1990793109040289. - Cited References: 27. - This work was supported by the analytical departmental program "Development of Higher Education Potential (2009-2100)" (grant 2.1.1/2584) and by the Russian Foundation for Basic Research, project no. 09-02-00324-a. . - ISSN 1990-7931

РУБ Physics, Atomic, Molecular & Chemical
Рубрики:
MOLECULAR-HYDROGEN COMPLEXES
   STORAGE
   TEMPERATURE
   TRANSITION
   DYNAMICS
   METALS
Аннотация: Complexes of zigzag-type carbon nanotubes (CNTs) with transition metal atoms, scandium and titanium, were studied. It was demonstrated that the energy of binding of both atoms with a carbon surface decreases whereas the rate of diffusion along the surface increases with increasing nanotube diameter. The rate constant of migration of scandium atoms over a CNT surface are several orders of magnitude higher than that for titanium atoms, because the CNT surface-Sc atom binding energy is substantially lower.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
Institute of Natural and Humanitarian Sciences, Siberian Federal University, Krasnoyarsk 660041, Russian Federation
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Siberian State Technological University, Krasnoyarsk 660049, Russian Federation

Доп.точки доступа:
Kuzubov, A. A.; Кузубов, Александр Александрович; Krasnov, P. O.; Краснов, Павел Олегович; Kozhevnikov, T. A.; Popov, M. A.; Analytical departmental program "Development of Higher Education Potential" [2.1.1/2584]; Russian Foundation for Basic Research [09-02-00324-a]
}
Найти похожие

Incommensurate magnetic structure in copper metaborate / G. A. Petrakovskii [et al.] // J. Exp. Theor. Phys. - 2001. - Vol. 93, Is. 4. - P. 809-814, DOI 10.1134/1.1420450. - Cited References: 10 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
CUB2O4
Аннотация: Based on the experimental data on copper metaborate single crystals obtained in X-ray and neutron diffraction studies and heat capacity, magnetic susceptibility, and muon spin relaxation measurements, a phenomenological theory of the incommensurate magnetic structure of this crystal was developed. Considering the space group of the crystal, I (4) over bar 2d, Lifshits invariants were included into its thermodynamic potential. An analysis showed that magnetic structure formation at 10-20 K was dominated by the subsystem of copper spins in 4b unit cell sites. Below 10 K, the role played by the magnetic subsystem of copper spins in 8d unit cell sites in the formation of the magnetic structure of copper metaborate substantially increased. This caused a sharp increase in the wave vector of the incommensurate structure as temperature lowered. Numerical simulation of the temperature dependence of the wave vector of the helix and the heat capacity of the crystal gave a satisfactory description of the experimental data. This simulation was used to estimate the parameters of the phenomenological thermodynamic potential of the magnetic system of copper metaborate. (C) 2001 MAIK "Nauka/Interperiodica".

WOS,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, Siberian Div, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
ETH Zurich, Neutron Scattering Lab, CH-5232 Villigen, Switzerland
Paul Scherrer Inst, CH-5232 Villigen, Switzerland
Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France
ИФ СО РАН

Доп.точки доступа:
Petrakovskii, G. A.; Петраковский, Герман Антонович; Popov, M. A.; Roessli, B.; Ouladdiaf, B.
}
Найти похожие

Kubarev, Y. G.
Microscopic mechanism for spin-lattice relaxation in the region of ferroelectric phase-transitions / Y. G. Kubarev, M. A. Popov // Izvestiya Akademii nauk SSSR Seriya Fizicheskaya. - 1984. - Vol. 48, Is. 6. - P. 1073-1076. - Cited References: 15 . - ISSN 0367-6765

РУБ Physics, Multidisciplinary

WOS
Доп.точки доступа:
Popov, M. A.
}
Найти похожие

Magnetic properties of copper metaborate CuB2O4 / G. A. Petrakovskii [et al.] // Low Temp. Phys. - 2002. - Vol. 28, Is. 8-9. - P. 606-612 ; Физика низких температур, DOI 10.1063/1.1511704. - Cited References: 17 . - ISSN 1063-777X

РУБ Physics, Applied
Рубрики:
SINGLE-CRYSTALS
RESONANCE
STATE
Аннотация: The results of experimental research on the magnetic and resonance properties, heat capacity, muon spin relaxation, and neutron scattering of single-crystal copper metaborate CuB2O4 are reviewed. The results of a symmetry analysis and of modeling by the method of the phenomenological thermodynamic potential are presented. The magnetic structure of the crystal in various temperature intervals of the magnetic ordering region is discussed. (C) 2002 American Institute of Physics.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Paul Scherrer Inst, CH-6232 Villigen, Switzerland
Swiss Fed Inst Technol, Lab Neutron Scattering, CH-6232 Villigen, Switzerland
Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France
ИФ СО РАН
L. V. Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, 660036 Krasnoyarsk, Russian Federation
Laboratory for Neutron Scattering, ETH Zurich, Paul Scherrer Institute, CH-6232 Villigen PSI, Switzerland
Institut Laue-Langevin, 38042 Grenoble, Cedex 9, France

Доп.точки доступа:
Petrakovskii, G. A.; Петраковский, Герман Антонович; Pankrats, A. I.; Панкрац, Анатолий Иванович; Popov, M. A.; Balaev, A. D.; Балаев, Александр Дмитриевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Vorotynov, A. M.; Воротынов, Александр Михайлович; Sablina, K. A.; Саблина, Клара Александровна; Roessli, B.; Schefer, J.; Amato, A.; Staub, U.; Boehm, M.; Ouladdiaf, B.

}
Найти похожие

Magnetic properties of Pb2Fe2Ge2O9 single crystals / G. A. Petrakovskii [et al.] // Phys. Solid State. - 2009. - Vol. 51, Is. 9. - P. 1853-1858, DOI 10.1134/S1063783409090145. - Cited References: 10 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
MULTIFERROICS
Аннотация: Single crystals of Pb2Fe2Ge2O9 have been grown. They were subjected to X-ray diffraction, magnetic, neutron diffraction, Mossbauer and spin resonance studies. It has been established that Pb2Fe2Ge2O9 is a weak ferromagnet with a N,el temperature T (N) = 46 K, and the exchange and spin-flop transition fields have been estimated. It has been demonstrated that the weak ferromagnetic moment is actually the result of the single-ion anisotropy axes for the magnetic moments of different magnetic sublattices being not collinear.

WOS,
Читать в сети ИФ
Держатели документа:
[Petrakovskii, G. A.
Popov, M. A.
Balaev, A. D.
Sablina, K. A.
Bayukov, O. A.
Velikanov, D. A.
Vorotynov, A. M.
Bovina, A. F.
Vasil'ev, A. D.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Petrakovskii, G. A.
Popov, M. A.
Bayukov, O. A.
Vasil'ev, A. D.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Boehm, M.] Inst Laue Langevin, F-38042 Grenoble 9, France
ИФ СО РАН

Доп.точки доступа:
Petrakovskii, G. A.; Петраковский, Герман Антонович; Popov, M. A.; Balaev, A. D.; Балаев, Александр Дмитриевич; Sablina, K. A.; Саблина, Клара Александровна; Bayukov, O. A.; Баюков, Олег Артемьевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Vorotynov, A. M.; Воротынов, Александр Михайлович; Bovina, A. F.; Бовина, Ася Федоровна; Vasil'ev, A. D.; Васильев, Александр Дмитриевич; Boehm, M.
}
Найти похожие

Magnetic resonance in FexMn1-xS single crystals / A. M. Vorotynov [et al.] // J. Appl. Phys. - 2009. - Vol. 106, Is. 7. - Ст. 73909, DOI 10.1063/1.3234402. - Cited References: 11. - This study was supported by the SB RAS-INTAS (Grant No. 06-1000013-9002) and the JSPS KAKENHI (Grant No. 18540317). . - ISSN 0021-8979

РУБ Physics, Applied

Кл.слова (ненормированные):
Experimental studies -- Ferromagnetic particles -- First-order -- Iron nanoparticles -- Manganese sulfide -- Mean diameter -- Randomly distributed -- Resonance spectrum -- S-matrix -- Superparamagnetics -- Computer simulation -- Manganese -- Manganese compounds -- Resonance -- Superparamagnetism -- Single crystals
Аннотация: The results of the experimental study and computer simulation of the resonance spectra of a single crystal of the iron-manganese sulfide FexMn1-xS (0 <=x <=0.29) are presented. The resonance properties of the concentrated solid solutions are explained by the formation of a homogeneous FexMn1-xS matrix with randomly distributed superparamagnetic iron nanoparticles. The mean diameter (< D > = 6.19 nm at T=250 K) and the axial first-order anisotropy constant (K-1 = 4.08 erg/cm(3) at T=250 K) of the ferromagnetic particles are determined. The volume fraction of the iron phase is estimated. (C) 2009 American Institute of Physics. [doi:10.1063/1.3234402]

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
Bovina, A. F.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Sokolov, V. V.] Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Branch, Novosibirsk 630090, Russia
[Mita, E.] Osaka Univ, Toyonaka, Osaka 5608531, Japan
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation
Nikolaev Institute of Inorganic Chemistry, Russian Academy of Sciences, Siberian Branch, Novosibirsk, 630090, Russian Federation
Osaka University, Toyonaka 560-8531, Japan

Доп.точки доступа:
Vorotynov, A. M.; Воротынов, Александр Михайлович; Abramova, G. M.; Абрамова, Галина Михайловна; Popov, M. A.; Petrakovskii, G. A.; Петраковский, Герман Антонович; Bovina, A. F.; Бовина, Ася Федоровна; Sokolov, V. V.; Mita, E.; SB RAS-INTAS [06-1000013-9002]; JSPS KAKENHI [18540317]
}
Найти похожие

Magnetic structure and magnetic excitations in the two-dimensional spin system of the Cu3B2O6 compound / G. A. Petrakovskii [et al.] // Phys. Solid State. - 2007. - Vol. 49, Is. 7. - P. 1315-1320, DOI 10.1134/S1063783407070207. - Cited References: 21 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
LONG-RANGE ORDER
   HEISENBERG-MODEL
   GROUND-STATE
   GAP
   ANTIFERROMAGNET
   SRCU2(BO3)(2)
   CUGEO3
   CHAINS
   CAV4O9
Аннотация: This paper reports on the results of measurements of the magnetic susceptibility, heat capacity, neutron scattering, muon spin relaxation, and electron paramagnetic resonance in Cu3B2O6 for the study of the ground state of the spin system of this compound. The results obtained suggest that, at a temperature of 10 K, the spin subsystem of the crystal, which consists of single spins and clusters of pairs and fours of spins interacting with one another, undergoes a transition to a state representing a superposition of the singlet (for clusters) and magnetically ordered (for single spins) states.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
LV Kirenskii Inst Phys, Siberian Div, Russian Acad Sci, Krasnoyarsk 660036, Russia
Paul Scherrer Inst, Villigen, Switzerland
Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Paul-Scherrer Institute, Villigen, Switzerland
Institute of Physics, Polish Academy of Sciences, Warsaw 02-668, Poland

Доп.точки доступа:
Petrakovskii, G. A.; Петраковский, Герман Антонович; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Popov, M. A.; Schefer, J.; Neidermayer, C.; Aleshkevich, P.; Szymczak, R.
}
Найти похожие

Mode splitting in 37-42 GHz barium hexaferrite resonator: Theory and device applications / M. A. Popov [et al.] // IEEE Trans. Magn. - 2014. - Vol. 50, Is. 6. - Ст. 4004507, DOI 10.1109/TMAG.2014.2298498. - Cited References: 34 . - ISSN 0018-9464. - ISSN 1941-0069

РУБ Engineering, Electrical & Electronic + Physics, Applied
Рубрики:
MILLIMETER-WAVE APPLICATIONS
   GUIDE JUNCTION CIRCULATORS
   FERRITE
   MICROWAVE
   PROPAGATION
   CYLINDERS
Кл.слова (ненормированные):
Dielectric resonance -- ferromagnetic resonance (FMR) -- hexagonal ferrite -- isolator -- phase shifter
Аннотация: Dielectric resonances in the 37-42 GHz frequency band in the single crystal barium hexaferrite that occur well below the ferromagnetic resonance (FMR) have been investigated. Sample dimensions have been chosen so that the mode frequency is lower than the spin-wave excitation (in this case, the natural domain resonance) frequency. Such dielectric mode frequencies, being a function of both permittivity and permeability, are magnetic field H tunable. Here, we report on below-FMR magnetodielectric resonance (MDR) axially magnetized barium hexaferrites and their H-tuning characteristics. Our studies reveal H-tuning by up to 2.5 GHz and the tuning is the largest when the ferrite is in a magnetically unsaturated state. A theory for the MDR is presented and a fairly good agreement between experimental data and theory has been obtained. Tunable millimeter wave phase shifters and isolators utilizing the below-FMR dielectric resonances have been demonstrated.

Смотреть статью,
WOS,
WOS,
Читать в сети ИФ
Держатели документа:
Taras Shevchenko Natl Univ Kyiv, Radiophys Dept, UA-01601 Kiev, Ukraine
Oakland Univ, Dept Phys, Rochester, MI 48309 USA
Russian Acad Sci, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Popov, M. A.; Zavislyak, I. V.; Movchan, N. N.; Gudim, I. A.; Гудим, Ирина Анатольевна; Srinivasan, G.
}
Найти похожие

10.

New magnetic states in copper metaborate CuB2O4 / A. I. Pankrats [et al.] // JETP Letters. - 2003. - Vol. 78, Is. 9. - P. 569-573, DOI 10.1134/1.1641486. - Cited References: 15 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
SOLITON LATTICE
FIELD
Аннотация: The static and resonance properties of copper metaborate CuB2O4 were experimentally studied in a magnetic field applied in the crystal tetragonal plane. The field-induced second-order phase transition to a weakly ferromagnetic state was observed in the temperature range 10-20 K. The low-field state is characterized by the absence of spontaneous moment, and it represents, presumably, a long-period helicoid. At temperatures below 2 K, two sequential first-order phase transitions were observed. They were accompanied by jumps in resonance absorption with a hysteresis upon changing field-scan direction. These transitions can be caused by the transformation of the incommensurate spin structure into the helicoidal states with periods commensurate with the lattice translation period. (C) 2003 MAIK "Nauka / Interperiodica".

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
Russian Acad Sci, PL Kapitza Phys Problems Inst, Moscow 117334, Russia
Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok, 660036, Russian Federation
Kapitza Institute for Physical Problems, Russian Academy of Sciences, ul. Kosygina 2, Moscow, 117334, Russian Federation
Institute of Physics, Polish Academy of Sciences, 02-668 Warsaw, Poland

Доп.точки доступа:
Pankrats, A. I.; Панкрац, Анатолий Иванович; Petrakovskii, G. A.; Петраковский, Герман Антонович; Popov, M. A.; Sablina, K. A.; Саблина, Клара Александровна; Prozorova, L. A.; Sosin, S. S.; Szimczak, G.; Szimczak, R.; Baran, M.
}
Найти похожие

11.

NMR study of successive phase transition in CuB2O4 / H. Nakamura, Y. Fujii, H. Kikuchi [et al.] // EASTMAG-2004 : abstract book / org. com. K. S. Aleksandrov [et al.]. - Krasnoyarsk, 2004. - Sect.: Fundamental magnetic properties. - P. 51. - Cited References: 1

Держатели документа:
Kirensky Institute of Physics
University of Fukui, Japan
School of Materials Sciences, JAIST, Inshikawa, Japan

Доп.точки доступа:
Aleksandrov, K. S. \org. com.\; Александров, Кирилл Сергеевич; Nakamura, H.; Fujii, Y.; Kikuchi, H.; Chiba, M.; Yamamoto, Y.; Hori, H.; Petrakovskii, G. A.; Петраковский, Герман Антонович; Popov, M. A.; Попов, Михаил Александрович; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Российская академия наук; Научный совет по физике конденсированных сред РАН; Научный совет РАН по физике низких температур; Сибирское отделение РАН; Красноярский научный центр Сибирского отделения РАН; Институт физики им. Л.В. Киренского Сибирского отделения РАН; Красноярский государственный университет; Красноярский государственный технический университет; Институт физики металлов Уральского отделения РАН; Euro-asian symposium "Trends in magnetism"(2 ; 2004 ; Aug. 24-27 ; Krasnoyarsk); "Trends in magnetism", Euro-Asian Symposium(2 ; 2004 ; Aug. 24-27 ; Krasnoyarsk)
}
Найти похожие

12.

NMR study of the successive phase transitions in CuB2O4 / H. Nakamura [et al.] // Prog. Theor. Phys. Suppl. - 2005. - Is. 159. - P. 360-364. - Cited References: 8 . - ISSN 0375-9687

РУБ Physics, Multidisciplinary
Рубрики:
COPPER METABORATE
Аннотация: Nuclear magnetic resonance (NMR) experiments on copper metaborate CuB2O4 are performed in order to study the successive phase transitions which includes the transition from the paramagnetic to the commensurate weak ferromagnetic phase at T-N = 21 K and further transition to the incommensurate helix phase at T* similar to 10 K. B-11-NMR spectra obtained for three crystal orientations (B parallel to [001], [110], [100]) were split into several lines below T-N and changed into more complicated line shapes below T*. The results of the angular dependence of the spectrum in the commensurate phase and the nuclear spin-lattice relaxation rate T-1(-1) are also discussed.

WOS

Доп.точки доступа:
Nakamura, H.; Fujii, Y.; Kikuchi, H.; Chiba, M.; Yamamoto, Y.; Hori, H.; Petrakovskii, G. A.; Петраковский, Герман Антонович; Popov, M. A.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; International Symposium on Quantum Spin Systems(2004 ; Nov. 30 - Dec. 03 ; Hayama, Japan)
}
Найти похожие

13.

Orientational dependence of the tails of dipole-broadened NMR spectra in crystals / V. E. Zobov [et al.] // J. Exp. Theor. Phys. - 1999. - Vol. 88, Is. 1. - P. 157-167, DOI 10.1134/1.558778. - Cited References: 36 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
NUCLEAR-DOUBLE-RESONANCE
   FLUCTUATION SPECTRUM
   CROSS-RELAXATION
   SOLIDS
   DIFFUSION
   MEMORY
   SHAPE
Аннотация: This paper describes experimental and theoretical studies of the tails of the dipole-broadened nuclear magnetic resonance (NMR) absorption spectra of F-19 in isomorphic single crystals of BaF2 and CaF2 with the magnetic field directed along three crystallographic axes. The results obtained by directly measuring the derivative of the tail of the NMR absorption spectrum and the falloffs of the Engelsberg-Lowe free precession after Fourier transformation qualitatively agree. It is shown that the shape of the tail is well described by an exponential function in which the orientational dependence of the exponent does not reduce to variation of the second moment. The observed shape of the tail and the orientational dependence of its parameters are explained on the basis of a self-consistent fluctuating-local-field theory. Nonlinear integral equations are derived for the correlation functions, taking into account the changes of the actual number of nearest neighbors caused by the anisotropy of the dipole-dipole interaction and the contribution of lattice sums with loops. The equations are solved numerically. Good agreement is obtained for the computed dropoffs of the free precession, the NMR spectra, and the cross-polarization rates with the experimental results. (C) 1999 American Institute of Physics. [S1063-7761(99)02401-4].

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia
ИФ СО РАН
ИХХТ СО РАН

Доп.точки доступа:
Zobov, V. E.; Зобов, Владимир Евгеньевич; Ivanov, Y. N.; Иванов, Юрий Николаевич; Popov, M. A.; Livshits, A. I.
}
Найти похожие

14.

Popov, M. A.
Effect of fluctuations on the NQR spectrum in the incommensurate phase of a Cs2ZnI4 crystal / M. A. Popov, I. P. Aaleksandrova, S. V. Primak // JETP Letters. - 1994. - Vol. 59, Is. 7. - P. 485-487. - Cited References: 5 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary

Аннотация: The direct spin-lattice relaxation due to local thermal fluctuations of the amplitude of the atomic-displacement wave -in the incommensurate phase of a crystal can strongly influence the lineshape of the resonant spectrum, reducing the intensity of the outermost temperature-dependent peaks in the frequency distribution, while having essentially no effect on the temperature-independent features of this distribution. This effect is apparently the reason for the anomalous behavior of the NQR spectrum of I-127 in Cs2ZnI4 in a certain temperature interval near the transition from the ''normal'' phase to the incommensurate phase.

WOS
Держатели документа:
LV KIRENSKII INST PHYS,KRASNOYARSK 660036,RUSSIA
ИФ СО РАН

Доп.точки доступа:
Aleksandrova, I. P.; Александрова, Инга Петровна; Primak, S. V.
}
Найти похожие

15.

Popov, M. A.
Gaussian approximation in the ising-model with long-range interaction / M. A. Popov // Theor. Math. Phys. - 1990. - Vol. 83, Is. 3. - P. 658-663, DOI 10.1007/BF01018036. - Cited References: 7 . - ISSN 0040-5779

РУБ Physics, Multidisciplinary + Physics, Mathematical

Аннотация: The infinite hierarchy of equations for the cumulants of the correlation functions of the longitudinal spin components in the Ising model with long-range interaction corresponding to a Gaussian form of the spectral density is investigated. The invariance of the cumulants with respect to permutation of the vertices is used to decouple the hierarchy. A phase transition of the second kind is described by the obtained system of equations for the cumulants of the first three orders in a three-dimensional model.

WOS
}
Найти похожие

16.

Popov, M. A.
Line shape of magnetic resonance in the Anderson approximation with consideration of quadratic fluctuations / M. A. Popov, V. E. Zobov // Fiz. Tverd. Tela. - 1996. - Vol. 38, Is. 10. - P. 3070-3074. - Cited References: 12 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

WOS
Держатели документа:
LV KIRENSKII INST PHYS,KRASNOYARSK 660036,RUSSIA
ИФ СО РАН
Доп.точки доступа:
Zobov, V. E.
}
Найти похожие

17.

Popov, M. A.
Magnetic properties of copper metaborate: Two-parameter phenomenological model / M. A. Popov, G. A. Petrakovskii, V. I. Zinenko // Phys. Solid State. - 2004. - Vol. 46, Is. 3. - P. 491-497, DOI 10.1134/1.1687867. - Cited References: 9 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
SOLITON LATTICE
CUB2O4
FIELD
Аннотация: Symmetry analysis is performed for the magnetic subsystem of copper metaborate, and a phenomenological model is proposed with two two-component order parameters that correspond to ferromagnetism and antiferromagnetism vectors lying in the tetragonal plane of this crystal. Owing to the I (4) over bar 2d space group of symmetry of this crystal, the thermodynamic potential contains the Lifshitz invariant having the form of an antisymmetric product of the order parameters and their spatial derivatives. Analysis of this model shows that the temperatures of ordering in the magnetic subsystem and of the formation of a spiral structure in it can be different. This fact allows numerical calculation of the temperature dependences of the spiral wave vector, magnetization, and intensities of first- and third-order magnetic satellites in the incommensurate phase that arise in neutron elastic scattering, as well as the field dependence of the magnetization. The experimental data, including a magnetic-field-temperature phase diagram, are satisfactorily described. The parameters of the phenomenological thermodynamic potential of the magnetic subsystem of copper metaborate are estimated. (C) 2004 MAIK "Nauka / Interperiodica".

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
Krasnoyarsk State University, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Petrakovskii, G. A.; Петраковский, Герман Антонович; Zinenko, V. I.; Зиненко, Виктор Иванович
}
Найти похожие

18.

Popov, M. A.
Nuclear-spin-lattice relaxation in the incommensurate phase of crystals / M. A. Popov // Fiz. Tverd. Tela. - 1984. - Vol. 26, Is. 3. - P. 948-949. - Cited References: 5 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

WOS
}
Найти похожие

19.

Popov, M. A.
On the magnetic phase diagram of copper metaborate / M. A. Popov, G. A. Petrakovskii, O. A. Bolsunovskaya // Phys. Solid State. - 2008. - Vol. 50, Is. 5. - P. 909-912, DOI 10.1134/S106378340805017X. - Cited References: 6 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
SOLITON LATTICE
CUB2O4
Аннотация: A stepwise transition from one incommensurate state of the spin system of a copper metaborate crystal to another incommensurate state was previously revealed using neutron scattering in an applied magnetic field. In this paper, the new state is interpreted as a combination of a commensurate state of one spin subsystem and an incommensurate state of another spin subsystem of the crystal.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
[Popov, M. A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Petrakovskii, G. A.
Bolsunovskaya, O. A.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Siberian Federal University, Svobodnyi pr. 79, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Petrakovskii, G. A.; Петраковский, Герман Антонович; Bolsunovskaya, O. A.
}
Найти похожие

20.

Popov, M. A.
Peculiapities of properties of cooper metaborate in a zero magnetic field / M. A. Popov, O. A. Bolsunovskaya, G. A. Petrakovskii // EASTMAG-2004 : abstract book / org. com. K. S. Aleksandrov [et al.]. - Krasnoyarsk, 2004. - Sect.: Fundamental magnetic properties. - P. 48. - Cited References: 1

Держатели документа:
Kirensky Institute of Physics

Доп.точки доступа:
Aleksandrov, K. S. \org. com.\; Александров, Кирилл Сергеевич; Bolsunovskaya, O. A.; Болсуновская, О. А.; Petrakovskii, G. A.; Петраковский, Герман Антонович; Попов, Михаил Александрович; Российская академия наук; Научный совет по физике конденсированных сред РАН; Научный совет РАН по физике низких температур; Сибирское отделение РАН; Красноярский научный центр Сибирского отделения РАН; Институт физики им. Л.В. Киренского Сибирского отделения РАН; Красноярский государственный университетКрасноярский государственный технический университет; Институт физики металлов Уральского отделения РАН; Euro-asian symposium "Trends in magnetism"(2 ; 2004 ; Aug. 24-27 ; Krasnoyarsk); "Trends in magnetism", Euro-Asian Symposium(2 ; 2004 ; Aug. 24-27 ; Krasnoyarsk)
}
Найти похожие