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    Spin-glass magnetic ordering in CoMgGaO2BO3 ludwigite / N. B. Ivanova [et al.] // Физ. низких температур. - 2012. - Т. 38, Вып. 2. - С. 214-217. - Библиогр.: 13 назв. - This work was supported by the Russian Foundation for Basic Research (project No. 09-02-00171-a), the Federal Agency for Science and Innovation (Rosnauka) (project No. MK-5632.2010.2), the Physics Division of the Russian Academy of Sciences, the program "Strongly Correlated Electrons" (project 2.3.1). . - ISSN 0132-6414. - ISSN 1816-0328
   Перевод заглавия: Спин-стекольное магнитное упорядочение в людвигите CoMgGaO2BO3
Рубрики:
AC Magnetic susceptibility
   DC magnetization
   Field cooled
   Flux methods
   Frequency dependent
   Magnetic system
   Magnetic transitions
   Needle shape
   Parent compounds
   Spin-glasses freezing
   Temperature dependencies
   Unit-cell volume
   Zero-field-cooled
   Cobalt
   Cobalt compounds
   Freezing
   Glass
   Magnetic susceptibility
   Magnetism
   Single crystals
   X-ray diffraction
   Spin glass
Кл.слова (ненормированные):
Spin-glass freezing -- Transition metal ludwigites
Аннотация: The single crystal needle shape samples of diamagnetically diluted cobalt ludwigite CoMgGaO2BO3 have been grown by the flux method. The results of x-ray diffraction and both dc and ac magnetic measurements are presented. The unit cell volume undergoes a noticable growth under dilution from 328.31 Å3 for the parent compound Co3O2BO3 to 345.46 Å3 for CoMgGaO2BO3. The temperature of magnetic transition is considerably lower for the latter compound (25 K against 43 Kfor Co3O2BO3). The dc magnetization temperature dependencies undergo the splitting of field cooled and zero-field cooled regimes and the ac magnetic susceptibility temperature dependencies are frequency dependent pointing out a possible spin-glass freezing in the magnetic system.

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Переводная версия Spin-glass magnetic ordering in CoMgGaO2BO3 ludwigite [Текст] / N. B. Ivanova [et al.] // Low Temp. Phys. : American Institute of Physics, 2012. - Vol. 38 No. 2.- P.172-174

Доп.точки доступа:
Ivanova, N. B.; Иванова, Наталья Борисовна; Platunov, M. S.; Платунов, Михаил Сергеевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Kazak, N. V.; Казак, Наталья Валерьевна; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Eremin, E. V.; Еремин, Евгений Владимирович; Vasiliev, A. D.; Васильев, Александр Дмитриевич
}
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    Arkhipkin, V. G.
    All-optical switching in a photonic crystal with a defect containing an N-type four-level atomic system / V. G. Arkhipkin, S. A. Myslivets // Phys. Rev. A. - 2012. - Vol. 86, Is. 6. - Ст. 063816, DOI 10.1103/PhysRevA.86.063816. - Cited References: 33. - This work was supported in part by the RAS Grants No. 24.29, No. 24.31, and No. 3.9.5, and SB RAS Grants No. 43 and No. 101. . - ISSN 1050-2947
   Перевод заглавия: Полностью оптическое переключение в фотонном кристалле с дефектом, содержащим четырехуровневую атомную систему N-типа

РУБ Optics + Physics, Atomic, Molecular & Chemical + Defects + Optical switches + Phase modulation + Probes + Refractive index
Рубрики:
Electromagnetically-induced-transparency
   Quantum interference
   Microcavities
   All-optical switching
   Atomic medium
   Cross-phase modulations
   Defect mode
   Electromagnetically induced transparency
   Four-level atomic system
   Kerr nonlinearity
   Laser fields
   Linear susceptibility
   One dimensional photonic crystal
   Probe field
   Quantum interference
   Resonance frequencies
   Third-order susceptibility
   Transmission spectrums
   Two photon
Аннотация: We study the transmission spectra of a one-dimensional photonic crystal with a defect containing a four-level atomic medium that exhibits a greatly enhanced third-order susceptibility while having a vanishing linear susceptibility dependent on the electromagnetically induced transparency. Two ways of controlling the transmission of a photonic crystal are discussed: via absorption, i.e., nonlinear (two-photon) absorption of the probe field enhanced by constructive quantum interference, and via dispersion, which comes down to shifting the resonance frequency of the defect mode for the probe field by varying the refractive index based on the giant Kerr nonlinearity (cross-phase modulation). We demonstrate that such systems enable nonlinear all-optical switching at ultralow intensities of the coupling and switching laser fields.

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Доп.точки доступа:
Myslivets, S. A.; Мысливец, Сергей Александрович
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    Korshunov, M. M.
    Three-orbital model for Fe-pnictides / M. M. Korshunov, Y. N. Togushova, I. Eremin // J. Supercond. Nov. Magn. - 2013. - Vol. 26, Is. 8. - P. 2665-2668, DOI 10.1007/s10948-013-2156-x . - ISSN 1557-1939
   Перевод заглавия: Трехорбитальная модель ферропниктидов
Кл.слова (ненормированные):
Fe-based superconductors -- Low-energy model -- Spin susceptibility -- Fe-based superconductors -- Iron-based superconductors -- Pairing interactions -- Spin susceptibility -- High temperature superconductors -- Magnetic susceptibility -- Superconductivity
Аннотация: We formulate and study the three-orbital model for iron-based superconductors. Results for the band structure, Fermi surface, and the spin susceptibility in both normal and superconducting s В± states are presented. We also discuss the pairing interaction and show that the dominant part of it should come from the intraorbital scattering. В© 2013 Springer Science+Business Media New York.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Ruhr Univ Bochum, Inst Theoret Phys 3, D-44801 Bochum, Germany
Kazan Fed Univ, Kazan 420008, Russia

Доп.точки доступа:
Togushova, Yu. N.; Eremin, I.; Коршунов, Максим Михайлович
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Magnetic and resonance properties of Bi24(CoBi)O40 / S. S. Aplesnin [et al.] // J. Korean Phys. Soc. - 2013. - Vol. 63, Is. 3. - P. 293-295, DOI 10.3938/jkps.63.293 . - ISSN 0374-4884
Кл.слова (ненормированные):
Curie-Weiss law -- g-factor -- Magnetic susceptibility -- Paramagnetic Neel temperature
Аннотация: Temperature and field dependences of the magnetic moment in the temperature range 4 K < T < 300 K and electron spin resonance linewidths and the g-factor in the temperature range 80 K < T < 300 K for the Bi24(CoBi)O40 compound synthesized by the solid-state reaction are analyzed. The magnetic susceptibility of Bi24(CoBi)O40 within the range 4 K < T < 300 K is described well by the Curie-Weiss law with the negative paramagnetic Curie temperature ? = -12.3 K and the effective magnetic moment ? = 5.08?B. The g-factor and the ESR linewidth grow with temperature. В© 2013 The Korean Physical Society.

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Держатели документа:
MF Reshetneva Aerocosm Siberian State Univ, Krasnoyarsk 660014, Russia
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Udod, L. V.; Удод, Любовь Викторовна; Sitnicov, M. N.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич
}
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    Magnetic and dielectric properties of the PbFeBO4 single crystal / A. I. Pankrats [и др.] // J. Magn. Magn. Mater. - 2014. - Vol. 353. - P. 23 – 28, DOI 10.1016/j.jmmm.2013.10.018. - Cited References: 21. - This work was supported by RFBR, Grant no. 13-02-00897 . - ISSN 0304-8853. - ISSN 1873-4766
   Перевод заглавия: Магнитные и диэлектрические свойства монокристалла PbFeBO4

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
HEMATITE
Кл.слова (ненормированные):
Single crystal growth -- Magnetic susceptibility -- Magnetic phase transition -- Antiferromagnetic order -- Dielectric permittivity -- Magnetoelectric effect
Аннотация: PbFeBO4 single crystals up to 4x2.5x0.5 mm3 in size were grown by spontaneous crystallization from a solution in a melt and their magnetic and dielectric properties were investigated.The high Neel temperature TN=114 K and the absence of the broad maximum of susceptibility above the Neel temperature suggest that the PbFeBO4 crystal is a three-dimensional antiferromagnet.The magnetic susceptibility anisotropy in the ordered state indicates that the antiferromagnetic vector is directed along the orthorhombic c axis. The anomalies of dielectric permittivities ε' and ε″ were observed in both polycrystalline and single-crystal samples within thetemperature ranges where the short-and long-range magnetic orders are established.This confirms the correlation between the magnetic and electric subsystems in the crystal.

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Доп.точки доступа:
Pankrats, A. I.; Панкрац, Анатолий Иванович; Sablina, K. A.; Саблина, Клара Александровна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Vorotynov, A. M.; Воротынов, Александр Михайлович; Bayukov, O. A.; Баюков, Олег Артемьевич; Eremin, A. V.; Еремин, Александр Владимирович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Popkov, S. I.; Попков, Сергей Иванович; Krasikov, A. A.; Красиков, Александр Александрович
}
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Ignatchenko, V. A.
Spin and elastic waves with the random coupling parameter / V. A. Ignatchenko, D. S. Polukhin // Diffusion and Defect Data Pt.B: Solid State Phenomena. - 2012. - Vol. 190. - P. 51-54, DOI 10.4028/www.scientific.net/SSP.190.51 . - ISBN 1012-0394. - ISBN 9783037854365
Кл.слова (ненормированные):
Dynamic susceptibility -- Elastic waves -- Inhomogeneities -- Magnetoelastic coupling -- Self-consistent approximation -- Spin waves -- Anti-resonance -- Dispersion law -- Dynamic susceptibility -- Inhomogeneities -- Magnetoelastic couplings -- Magnetoelastic waves -- Narrow resonances -- Physical nature -- Random couplings -- Self-consistent approximation -- Wave numbers -- Wavefields -- Green's function -- Magnetic materials -- Magnetic susceptibility -- Spin waves -- Elastic waves
Аннотация: Dynamic susceptibilities (Green's function) in a system of two wave fields of different physical nature connected by the zero-mean random coupling parameter are studied. Magnetoelastic waves in zero-mean magnetostrictive media are considered. It is shown that the Green's functions of the spin G? m(?) and elastic G? u(?) waves at the intersection of the initial dispersion laws have the form of broad single-mode peaks with the fine structure on the tops of these peaks: the narrow resonance on the top of G? m(?) and the narrow antiresonance on the top of G? u(?) For the longwave inhomogeneities the widths of the broad peaks and narrow peaks are determined by the rootmean- square fluctuation and the correlation wave number, respectively. В© (2012) Trans Tech Publications.

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Доп.точки доступа:
Polukhin, D. S.; Полухин, Дмитрий Сергеевич; Игнатченко, Вальтер Алексеевич; Moscow International Symposium on Magnetism(5 ; 2011 ; Aug. ; 21-25 ; Moscow)
}
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Ignatchenko, V. A.
Spectral properties of superlattices with anisotropic inhomogeneities. The transition from 3D to 2D disorder / V. A. Ignatchenko, A. V. Pozdnyakov // Diffusion and Defect Data Pt.B: Solid State Phenomena. - 2012. - Vol. 190. - P. 597-600, DOI 10.4028/www.scientific.net/SSP.190.597 . - ISBN 1012-0394. - ISBN 9783037854365
Кл.слова (ненормированные):
Anisotropic inhomogeneities -- DOS -- Green Function -- Superlattice -- Susceptibility -- Waves -- Anisotropic inhomogeneities -- Continuous transitions -- Correlation properties -- Density of state -- Dynamic susceptibility -- Inhomogeneities -- Spectral properties -- Wave numbers -- DOS -- Green's function -- Magnetic materials -- Magnetic susceptibility -- Superlattices -- Three dimensional -- Waves -- Anisotropy
Аннотация: Waves in superlattice (SL) contained inhomogeneities with anisotropic correlation properties are considered. The anisotropy of the correlation during the transition from 3D to 2D disorder is characterized by the parameter ? 1 = k ||/k?-1, where k || and k? are the correlation wave numbers along the axis of the SL and in the plane of the its layers, respectively (r || =k || -1 and r?=k?-1 are the correlation radii). Dependencies of both the dynamic susceptibility and density of states at the continuous transition from the isotropic three-dimensional inhomogeneities (? 1 = 0) to the twodimensional ones (? 1 = -1) have been obtained. В© (2012) Trans Tech Publications.

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Доп.точки доступа:
Pozdnyakov, A. V.; Поздняков, А.В.; Игнатченко, Вальтер Алексеевич; Moscow International Symposium on Magnetism(5 ; 2011 ; Aug. ; 21-25 ; Moscow)
}
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    Ignatchenko, V. A.
    Spin-wave spectrum in the sinusoidal superlattice with amplitude and phase inhomogeneities / V. A. Ignatchenko, D. S. Tsikalov // Solid State Phenom. : Selected, peer reviewed papers. - 2014. - Vol. 215: Trends in Magnetism: Nanomagnetism (EASTMAG-2013). - P. 385-388, DOI 10.4028/www.scientific.net/SSP.215.385. - Cited References: 6 . - ISSN 978-30383. - ISSN 1662-9779
   Перевод заглавия: Спектр спиновых волн в синусоидальной сверхрешетке с амплитудными и фазовыми неоднородностями
Кл.слова (ненормированные):
DOS -- Dynamic susceptibility -- Inhomogeneities -- Spin waves -- Superlattices
Аннотация: Effects of both the phase and the amplitude inhomogeneities of different dimensionalities on the Green's function and on the one-dimensional density of states of spin waves in the sinusoidal superlattice have been studied. Processes of multiple scattering of waves from inhomogeneities have been taken into account in the self-consistent approximation. © (2014) Trans Tech Publications, Switzerland.

Доп.точки доступа:
Ovchinnikov, S. G. \ed.\; Овчинников, Сергей Геннадьевич; Samardak, A. \ed.\; Tsikalov, D. S.; Цикалов, Денис Сергеевич; Игнатченко, Вальтер Алексеевич; Euro-Asian Symposium "Trends in MAGnetism": Nanomagnetism(5 ; 2013 ; sept. ; 15-21 ; Vladivostok)
}
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    Magnetic and dielectric properties of PbFeBO4 and PbMnBO4 single crystals / A. I. Pankrats [et al.] // Solid State Phenom. : Selected, peer reviewed papers. - 2014. - Vol. 215: Trends in Magnetism: Nanomagnetism (EASTMAG-2013). - P. 372-377, DOI 10.4028/www.scientific.net/SSP.215.372. - Cited References: 3. - This investigation was supported by the Russian Foundation for Basic Research (RFBR) (Grant No.13-02-00897). . - ISSN 978-30383. - ISSN 1662-9779
   Перевод заглавия: Магнитные и диэлектрические свойства монокристаллов PbFeBO4 и PbMnBO4
Кл.слова (ненормированные):
Borate oxide -- Dielectric permittivity -- Magnetic susceptibility -- Single crystal -- Strong anisotropy
Аннотация: PbFeBO4 and PbMnBO4 single crystals were synthesized. The X-ray, magnetic, dielectric, Mossbauer, and resonance investigations of the crystals were fulfilled. It is established that single-crystal PbFeBO4 is an antiferromagnet with a Neel temperature TN =114 K, while PbMnBO4 is a ferromagnet with a Curie temperature TC = 31 K. Both single-crystal compounds have a strong anisotropy of the magnetic and dielectric properties. © (2014) Trans Tech Publications, Switzerland.

Доп.точки доступа:
Ovchinnikov, S. G. \ed.\; Овчинников, Сергей Геннадьевич; Samardak, A. \ed.\; Pankrats, A. I.; Панкрац, Анатолий Иванович; Sablina, K. A.; Саблина, Клара Александровна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Vorotynov, A. M.; Воротынов, Александр Михайлович; Balaev, A. D.; Балаев, Александр Дмитриевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Kolkov, M. I.; Колков, Максим Игоревич; Euro-Asian Symposium "Trends in MAGnetism": Nanomagnetism(5 ; 2013 ; sept. ; 15-21 ; Vladivostok)
}
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10.

Val'kov, V. V.
Radiation-induced modification of the temperature dependence of the magnetic susceptibility of a 1D magnet / V. V. Val'kov, M. S. Shustin // JETP Letters. - 2014. - Vol. 100, Is. 7. - P. 455-462, DOI 10.1134/S0021364014190138. - Cited References: 28. - This work was supported by the Russian Foundation for Basic Research, project nos. 12-02-31130, 13-02-00523, and 13-02-98013. . - ISSN 0021-3640. - ISSN 1090-6487

РУБ Physics, Multidisciplinary
Рубрики:
SINGLE-CHAIN MAGNETS
   EASY-PLANE
   ARRANGEMENT
   MODEL
   IONS
Аннотация: TThe excitation spectrum of a catena-[FeII(ClO4)2{FeIII(bpca)2}]ClO4 anisotropic 1D magnet with alternating high-spin and low-spin iron ions has been calculated with the use of the diagrammatic technique for Hubbard operators. This has allowed establishing conformity with the Ising model, for which the magnetic susceptibility has been calculated by the transfer-matrix method. The introduction of a statistical ensemble taking into account the presence of chains with different lengths and iron ions with different spins has allowed describing the modification of the magnetic susceptibility under optical irradiation.

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Публикация на русском языке Вальков, Валерий Владимирович. Модификация температурной зависимости магнитной восприимчивости 1D-магнетика под действием облучения [Текст] / В. В. Вальков, М. С. Шустин // Письма в Журн. эксперим. и теор. физ. : Наука, 2014. - Т. 100 Вып. 7. - С. 510-517

Держатели документа:
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Shustin, M. S.; Шустин, Максим Сергеевич; Вальков, Валерий Владимирович; Russian Foundation for Basic Research [12-02-31130, 13-02-00523, 13-02-98013]
}
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