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Resonance absorptions in KFe11O17 / V. N. Vvasilev [и др.] // Fiz. Tverd. Tela. - 1992. - Vol. 34, Is. 10. - P. 3047-3051. - Cited References: 11 . - ISSN 0367-3294

РУБ Physics, Condensed Matter
Рубрики:
MAGNETIC-PROPERTIES

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

Доп.точки доступа:
Vvasilev, V. N.; Matveiko, E. N.; Kruglik, A. I.; Круглик, Анатолий Иванович; Pankrats, A. I.; Панкрац, Анатолий Иванович; Petrakovskii, G. A.; Петраковский, Герман Антонович; Sablina, K. A.; Саблина, Клара Александровна
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APLESNIN, S. S.
FORMATION OF FERROMAGNETIC ORDER IN ANISOTROPIC FRUSTRATED ANTIFERROMAGNETS / S. S. APLESNIN // Fiz. Tverd. Tela. - 1992. - Vol. 34, Is. 2. - P. 554-560. - Cited References: 5 . - ISSN 0367-3294

РУБ Physics, Condensed Matter
Рубрики:
COMPETING INTERACTIONS
MAGNETIC-PROPERTIES

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Polarization analysis of spin waves in Bi2CuO4 / B. Roessli [et al.] // Physica B. - 1997. - Vol. 234. - P. 726-727, DOI 10.1016/S0921-4526(96)01129-5. - Cited References: 7 . - ISSN 0921-4526

РУБ Physics, Condensed Matter
Рубрики:
MAGNETIC-PROPERTIES
Кл.слова (ненормированные):
spin waves -- polarization analysis
Аннотация: By means of inelastic neutron scattering, we show that there are two non-degenerate branches of magnetic excitations in Bi2CuO4. The polarization of the magnons is obtained from the magnetic field dependence of the dynamical susceptibility and by using polarization analysis.

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Держатели документа:
CEA,DEPT RECH FONDAMENTALE MAT CONDENSEE,SPSMS,MDN,F-38054 GRENOBLE 9,FRANCE
RUSSIAN ACAD SCI,LV KIRENSKY PHYS INST,SIBERIAN BRANCH,KRASNOYARSK 660036,RUSSIA
ИФ СО РАН

Доп.точки доступа:
Roessli, B.; Fak, B.; FernandezDiaz, M. T.; Sablina, K. A.; Саблина, Клара Александровна; Petrakovskii, G. A.; Петраковский, Герман Антонович; European Conference on Neutron Scattering(1 ; 1996 ; Oct. ; 8-11 ; Interlaken, Switzerland)
}
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Ovchinnikov, S. G.
Role of zinc and nickel impurities in high-temperature superconductors / S. G. Ovchinnikov // Phys. Solid State. - 1999. - Vol. 41, Is. 4. - P. 534-538, DOI 10.1134/1.1130819. - Cited References: 32 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
PR2-XCEXCUO4+DELTA SINGLE-CRYSTALS
   SR-CU-O
   COPPER OXIDES
   MAGNETIC-PROPERTIES
   NI
   MODEL
   ZN
   SUBSTITUTION
   SCATTERING
   SPECTRUM
Аннотация: The local changes produced in the electronic structure and their effect on the physical properties of the superconducting and normal phases when zinc and nickel are substituted for copper are examined on the basis of a multiband p-d model. It is shown that strong electronic correlations suppress the S = 1 configuration of Ni2+ and cause the superposition of the S = 1/2 and S = 0 states of nickel. The change in the density of states in p- and n-type systems is studied, and the peculiarity of Zn impurity for p- type systems and Ni impurity for n-type systems is shown. The universal dependence of the T-c on the residual resistance in lightly doped superconductors and deviations from it in optimally doped systems are discussed. (C) 1999 American Institute of Physics. [S1063-7834(99)00704-2].

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Публикация на русском языке Овчинников, Сергей Геннадьевич. Роль примесей цинка и никеля в высокотемпературных сверхпроводниках [Текст] / С. Г. Овчинников // Физ. тверд. тела. - 1999. - Т. 41 Вып. 4. - С. 596-600

Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Овчинников, Сергей Геннадьевич
}
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An analysis of the mechanism of Kerr effect enhancement in Mn/Dy/Bi / S. G. Ovchinnikov [et al.] // Phys. Solid State. - 1999. - Vol. 41, Is. 1. - P. 80-86, DOI 10.1134/1.1130733. - Cited References: 35 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
ELECTRONIC-STRUCTURE
   THIN-FILMS
   MAGNETIC-PROPERTIES
   RARE-EARTH
   MAGNETOOPTICAL PROPERTIES
   MNBI FILMS
   STABILITY
   GD
Аннотация: A study is reported of the structural, magnetic, and magneto-optic properties of Mn/Dy/Bi films obtained by multilayer technology. The maximum Kerr rotation angle in such films is shown to be theta(k) = 2.25 degrees. Possible reasons for such a large Kerr effect enhancement are considered, namely, an increase in the 6p - 3d transition probability caused by symmetry distortion, polarization of the Bi6p band, and a change in the density of states near the Fermi level. The latter reason has been analyzed by simulating the electronic structure of Mn/Dy/Bi through superposition of Dy levels on the MnBi band structure. This approach has revealed possible additional transitions which may be induced by the presence of a Dy buffer and could contribute to the Kerr magneto-optic effect. (C) 1999 American Institute of Physics. [S1063=7834(99)02001-8].

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Публикация на русском языке Анализ механизма увеличения эффекта Керра в Mn/Dy/Bi [Текст] / С. Г. Овчинников [и др.] // Физ. тверд. тела. - С.-Петербург, 1999. - Т. 41 Вып. 1. - С. 91-97

Держатели документа:
Russian Acad Sci, LV Kirenskii Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Burkova, L. V.; Буркова, Людмила Викторовна; Seredkin, V. A.; Середкин, Виталий Александрович; Yakovchuk, V. Y.
}
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Aleksandrov, K. S.
Structural distortions in families of perovskite-like crystals / K. S. Aleksandrov, J. . Bartolome // Phase Transit. - 2001. - Vol. 74, Is. 3. - P. 255-335, DOI 10.1080/01411590108228754. - Cited References: 262 . - ISSN 0141-1594

РУБ Crystallography + Physics, Condensed Matter
Рубрики:
LOW-TEMPERATURE PHASE
   INELASTIC-NEUTRON-SCATTERING
   POWDER PROFILE REFINEMENT
   MII = CO
   X-RAY
   RAMAN-SCATTERING
   ORDERED PEROVSKITE
   RHOMBOHEDRAL PEROVSKITES
   RB2KMIIIF6 ELPASOLITES
   MAGNETIC-PROPERTIES
Кл.слова (ненормированные):
structural phase transitions -- perovskites -- perovskite-like crystals -- group theoretical classification
Аннотация: The crystallographic and group theoretical analysis of the structural phase transitions in perovskite and perovskite-like crystals is reviewed. We include ABX(3) perovskites and their relative crystals of ReO3 type (G(0) = O-h(1)), elpasolites, cryolites and their relatives (G(0) = O-h(5)) layered crystals of TIAIF(4) series (G(0) = D-4h(1)), Aurivillius and Ruddlesden-Popper series (G(0) = D-4h(17)). The structures in their initial phase G(0) often contain n layers (n = 1, 2,3) of vertex linked octahedra. The distorted phases produced by one kind of tilt and by superposition of tilts in the slabs are enumerated. Most of the tilts correspond to symmetry changes, which can be associated to definite librational lattice modes irreducible representations of the G(0) group. The softening of modes associated to the PT has been found experimentally in many perovskites, elpasolites and layered crystals with n = 1. In contrast, no such soft modes have been found yet for even-layered (n = 2) crystals. Examples of successive phase transitions due to the superposition of tilts in these types of crystals have been collected.

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Держатели документа:
LV Kirenskii Inst Phys, Siberian Branch, Russian Acad Sci, Krasnoyarsk 660036, Russia
Univ Zaragoza, CSIC, Inst Ciencias Mat Aragon, Zaragoza, Spain
ИФ СО РАН

Доп.точки доступа:
Bartolome, J.; Александров, Кирилл Сергеевич
}
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Superparamagnetic and ferrimagnetic nanoparticles in glass matrix / I. S. Edelman [et al.] // Physica B. - 2001. - Vol. 301, Is. 3-4. - P. 203-211, DOI 10.1016/S0921-4526(01)00274-5. - Cited References: 9 . - ISSN 0921-4526

РУБ Physics, Condensed Matter
Рубрики:
MAGNETIC-PROPERTIES
PARTICLES
FILMS
Кл.слова (ненормированные):
magnetic nanoparticles -- Faraday rotation -- Faraday rotation -- Magnetic nanoparticles -- Crystal structure -- Faraday effect -- Ferrimagnetic materials -- Glass -- Particle size analysis -- Superparamagnetism -- X ray diffraction analysis -- Amorphous glass matrices -- Faraday rotations -- Nanostructured materials
Аннотация: Faraday rotation (FR) spectral, field, and temperature dependencies in oxide glasses with small additions of paramagnetic elements are investigated. Formation of ferrite nanoparticles in amorphous glass matrices is revealed by X-ray diffraction. Particles have crystal structure similar to spinel structure, their dimensions are about 10-24 nm. The FR field dependencies are typical for ferrimagnetic or superparamagnetic substances depending on particle size. Strong FR increase at the samples cooling (more than twice for some samples) in the temperature interval 105-273 K is observed. (C) 2001 Elsevier Science B.V. All rights reserved.

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
SI Vavilov State Opt Inst, St Petersburg 193117, Russia
ИФ СО РАН
L.V. Kirensky Institute of Physics, Russian Academy of Sciences-SB, Krasnoyarsk 660036, Russian Federation
S.I. Vavilov Optical State Institute, St. Peterburg 193117, Russian Federation

Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Ivantsov, R.; Vasiliev, A.; Stepanov, S.; Kornilova, E.; Zarubina, T.
}
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Aplesnin, S. S.
Two-particle spin-singlet excitations in coupled spin-1/2 antiferromagnetic alternating chains / S. S. Aplesnin // J. Phys.: Condens. Matter. - 2001. - Vol. 13, Is. 14. - P. 3403-3410, DOI 10.1088/0953-8984/13/14/313. - Cited References: 14 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
MAGNETIC-PROPERTIES
   LIGHT-SCATTERING
   CUGEO3
   S=1/2
Кл.слова (ненормированные):
Antiferromagnetic materials -- Approximation theory -- Chemical bonds -- Electron transport properties -- Monte Carlo methods -- Particles (particulate matter) -- Quantum theory -- Thermal effects -- Antiferromagnetic alternating chains -- Excitation spectrum -- Interchain exchange -- Mean-field approximation -- Quantum Monte Carlo method -- Singlet gaps -- Spin-singlet excitations -- Energy gap
Аннотация: The spectrum of the two-particle spin-singlet (DeltaS(z) = 0, +/-1) excitations of a weakly coupled antiferromagnetic spin-1/2 alternating (J(1) +/- delta) chain is calculated using a mean-field approximation for the interchain exchange (J(2)) by the quantum Monte Carlo method. The bandwidth change of these excitations, the mass gaps in the singlet-singlet excitation spectrum, the top boundaries of the bands and the velocities of these excitations are estimated as functions of the alternating bond delta. The temperatures at which the singlet gaps close are determined.

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Держатели документа:
Russian Acad Sci, LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
L V Kirenskii Institute of Physics, Siberian Br. Russian Acad. of Sci., Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Аплеснин, Сергей Степанович
}
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Multilayer Co/Pd films with nanocrystalline and amorphous Co layers: Coercive force, random anisotropy, and exchange coupling of grains / R. S. Iskhakov [et al.] // Tech. Phys. Lett. - 2002. - Vol. 28, Is. 9. - P. 725-728, DOI 10.1134/1.1511766. - Cited References: 14 . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
MAGNETIC-PROPERTIES
   SIZE DEPENDENCE
   ALLOYS
   FERROMAGNETS
   FE
Аннотация: The values of saturation magnetization M-s, exchange coupling constant A, local magnetic anisotropy field H-a , random anisotropy correlation radius R-c, and coercive force H-c were independently measured for multilayer Co/Pd films with nanocrystalline and amorphous Co layers. It is shown that variation of the coercive force H-c(t(Co)) as a function of the cobalt layer thickness t(Co) is related to changes in characteristics of the magnetic microstructure. The main factor determining changes in the ferromagnetic correlation radius R-f and the average anisotropy [K] of a magnetic block in multilayer Co/Pd films is variation of exchange coupling constant A(t(Co)). (C) 2002 MAIK "Nauka/Interperiodica".

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Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Div, Krasnoyarsk, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Iskhakov, R. S.; Исхаков, Рауф Садыкович; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Balaev, A. D.; Балаев, Александр Дмитриевич; Chekanova, L. A.; Чеканова, Лидия Александровна
}
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10.

Fe nanowires in carbon nanotubes as an example of a one-dimensional system of exchange-coupled ferromagnetic nanoparticles / R. S. Iskhakov [et al.] // JETP Letters. - 2003. - Vol. 78, Is. 4. - P. 236-240, DOI 10.1134/1.1622038. - Cited References: 38 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
MAGNETIC-PROPERTIES
   RANDOM ANISOTROPY
   ELECTRODEPOSITED NANOWIRES
   NI NANOWIRES
   ARRAYS
   NANOCRYSTALLINE
   ALUMINA
   NICKEL
   PORES
   STATE
Аннотация: The cooperative phenomena revealed in the field and temperature dependences of the magnetization in a system of iron nanoparticles in carbon nanotubes were studied experimentally. The character of the temperature dependences of the magnetization indicates that the ferromagnetic Fe particles in carbon nanotubes are exchange-coupled. In the region where the magnetization approaches saturation, the magnetization curves reveal the power dependence DeltaM similar to H-3/2 typical for a one-dimensional system of exchange-coupled ferromagnetic nanoparticles. (C) 2003 MAIK "Nauka / Interperiodica".

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Russian Acad Sci, Nikolaev Inst Inorgan Chem, Siberian Div, Novosibirsk 630090, Russia
Russian Acad Sci, Boreskov Inst Catalysis, Siberian Div, Novosibirsk 630090, Russia
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok, 660036, Russian Federation
Nikolaev Institute of Inorganic Chemistry, Siberian Division, Russian Academy of Sciences, pr. Akademika Lavrent'eva 3, Novosibirsk, 630090, Russian Federation
Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, pr. Akademika Lavrent'eva 5, Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Iskhakov, R. S.; Исхаков, Рауф Садыкович; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Balaev, A. D.; Балаев, Александр Дмитриевич; Okotrub, A. V.; Kudashov, A. G.; Kuznetsov, V. L.; Butenko, Y. V.
}
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11.

Microstructure and properties of Co-Sm-O nanogranular films / G. I. Frolov [et al.] // Phys. Solid State. - 2003. - Vol. 45, Is. 12. - P. 2303-2308, DOI 10.1134/1.1635502. - Cited References: 17 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
NANOCRYSTALLINE COBALT FILMS
MAGNETIC-PROPERTIES
IRON FILMS
Аннотация: The effect of annealing on the structure and physical properties of Co-Sm-O alloy films prepared using pulsed plasma deposition is investigated. It is found that Co-Sm-O films in the initial state possess superparamagnetic properties due to the presence of small-sized magnetic nanoparticles surrounded by dielectric layers of samarium oxide in the film structure. Upon annealing, the Co-Sm-O films undergo structural transformations and exhibit a number of magnetic properties (including those inherent in both soft and hard magnetic materials). (C) 2003 MAIK "Nauka / Interperiodica".

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Frolov, G. I.; Фролов, Георгий Иванович; Zhigalov, V. S.; Жигалов, Виктор Степанович; Zharkov, S. M.; Жарков, Сергей Михайлович; Pol'skii, A. I.; Kirgizov, V. V.
}
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12.

Solid-state synthesis in Ni/Fe/MgO(001) epitaxial thin films / V. G. Myagkov [et al.] // Vol. 80, Is. 7. - P. 487-490, DOI 10.1134/1.1839296. - Cited References: 34 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
HIGH-TEMPERATURE SYNTHESIS
   BINARY DIFFUSION COUPLES
   MARTENSITIC TRANSFORMATIONS
   PHASE-FORMATION
   MAGNETIC-PROPERTIES
   SPIN DYNAMICS
   INVAR-ALLOYS
   IRON
   TRANSITION
   NUCLEATION
Аннотация: Solid-state synthesis in Ni/Fe/MgO(001) bilayer epitaxial thin films has been studied experimentally. The phase sequence Fe/Ni -- (similar to350degreesC)Ni(3)Fe -- (similar to400degreesC)NiFe -- (similar to550degreesC)gamma(par) is formed as the annealing temperature increases. The crystal structure in the invar region consists of epitaxially intergrown single-crystal blocks consisting of the paramagnetic gamma(par) and ferromagnetic NiFe phases, which satisfy the orientation relationship [100](001)NiFe parallel to [100](001)gamma(par). It has been shown that the nucleation temperatures of the Ni(3)Fe, NiFe, and gamma(par) phases coincide with the temperatures of solid-state transformations in the Ni-Fe system. (C) 2004 MAIK "Nauka/Interperiodica".

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Akademgorodok, Krasnoyarsk 660036, Russia
Russian Acad Sci, Inst Chem & Chem Technol, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
ИХХТ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Inst. of Chem. and Chem. Technology, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Myagkov, V. G.; Мягков, Виктор Григорьевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Bykova, L. E.; Быкова, Людмила Евгеньевна; Zhigalov, V. S.; Жигалов, Виктор Степанович; Bondarenko, G. N.; Бондаренко, Галина Николаевна
}
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13.

Analysis of the electrical and optical properties of VBO3 single crystals and Fe1-xVxBO3 solid solutions on the basis of a many-electron model of energy band structure / N. B. Ivanova [et al.] // Phys. Solid State. - 2004. - Vol. 46, Is. 8. - P. 1462-1468, DOI 10.1134/1.1788779. - Cited References: 32. - One of the authors (M.M.A.) would like to thank the Deutsche Forschungsgemeinschaft (SFB608) for financial support. This study was supported by the Russian Foundation for Basic Research (project no. 03-02-16286), the program "Integration" (project no. B0017), and the program of the Division of Physical Sciences of the Russian Academy of Sciences "Strongly Correlated Electrons" . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
MAGNETIC-PROPERTIES
   CALCITE STRUCTURE
   PHASE-TRANSITION
   FERRIC BORATE
   HIGH-PRESSURE
   FEBO3
   FE1-XCRXBO3
   FERROMAGNET
   MOSSBAUER
   SPECTRA
Аннотация: A many-electron model of the energy band structure of VBO3 and of Fe1 - xVxBO3 solid solutions is proposed with strong electron correlations taken into account. Experimental optical absorption spectra and data on the resistivity are discussed in the framework of the suggested model. Variation in the magnetic and electronic properties of VBO3 and Fe1 - xVxBO3 under high pressure is predicted. For VBO3, a Mott-Hubbard (insulator-metal) transition is expected in the high-pressure phase. In Fe1 - xVxBO3 solid solutions, a nontrivial variation in the properties is predicted, leading to the appearance of a different magnetic state. (C) 2004 MAIK "Nauka / Interperiodica".

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Публикация на русском языке Анализ электрических и оптических свойств монокристаллов VBO[3] и твердых растворов Fe[1-x]V[x]BO[3] на основе многоэлектронной модели из зонной структуры [Текст] / Н. Б. Иванова [и др.] // Физ. тверд. тела. - 2004. - Т. 46 Вып. 8. - С. 1422-1427

Держатели документа:
Krasnoyarsk State Tech Univ, Krasnoyarsk 660074, Russia
Russian Acad Sci, Siberian Div, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany
ИФ СО РАН
Krasnoyarsk State Tech. University, Krasnoyarsk, 660074, Russian Federation
II. Physikalisches Institut, Universitat zu Koln, Koln, 50937, Germany

Доп.точки доступа:
Ivanova, N. B.; Иванова, Наталья Борисовна; Kazak, N. V.; Казак, Наталья Валерьевна; Markov, V. V.; Марков, Владимир Витальевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Rudenko, V. V.; Руденко, Валерий Васильевич; Abd-Elmeguid, M. M.
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14.

Electron transition in intercalated disulfide CuCrS2 / G. M. Abramova [et al.] // Phys. Solid State. - 2004. - Vol. 46, Is. 12. - P. 2225-2228, DOI 10.1134/1.1841385. - Cited References: 12 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
METAL DICHALCOGENIDES
MAGNETIC-PROPERTIES
Аннотация: Electrical, resonant, and magnetic properties of intercalated copper chromium disulfide CuCrS2 are studied. It is established that CuCrS2 is an antiferromagnetic semiconductor with Neel temperature T-N = 40.7 K and an effective magnetic moment of 4.3mu(B). Anomalies in the electrical, magnetic, and resonant properties of CuCrS2 are found at T-c = 110 K, which suggest an electron transition accompanied by alteration of the valences of the 3d-metal ions. (C) 2004 MAIK "Nauka/Interperiodica".

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Держатели документа:
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Bashkortostan State Univ, Ufa 450074, Bashkortostan, Russia
ИФ СО РАН
Krasnoyarsk State University, pr. Svobodnyi 79, Krasnoyarsk, 660041, Russian Federation
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok, 660036, Russian Federation
Bashkortostan State University, ul. Frunze 32, Ufa, Bashkortostan, 450074, Russian Federation

Доп.точки доступа:
Abramova, G. M.; Абрамова, Галина Михайловна; Vorotynov, A. M.; Воротынов, Александр Михайлович; Petrakovskii, G. A.; Петраковский, Герман Антонович; Kiselev, N. I.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Bovina, A. F.; Бовина, Ася Федоровна; Al'mukhametov, R. F.; Yakshibaev, R. A.; Gabitov, E. V.
}
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15.

Optical properties and electronic structure of rare-earth ferroborates / V. N. Zabluda [et al.] // Phys. Solid State. - 2005. - Vol. 47, Is. 3. - P. 489-494, DOI 10.1134/1.1884710. - Cited References: 19. - This work was supported by the Russian Foundation for Basic Research (project no. 03-02-16268) and the program of the Department of Physical Sciences of the Russian Academy of Sciences "Strongly Correlated Electrons" . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
TRIGONAL GDFE3(BO3)(4)
   MAGNETIC-PROPERTIES
   BAND-STRUCTURE
   FEBO3
   ABSORPTION
Аннотация: The optical absorption spectra of single-crystal ferroborate GdFe3(BO3)(4) and GdFe2.1Ga0.9(BO3)(4) are measured and interpreted. It is found that the absorption edge and the absorption bands A, B, and C observed below the edge are close to those for FeBO3. A many-electron model of the band structure of GdFe3(BO3)(4) is suggested including strong electron correlations between the iron d states. It is shown that GdFe3(BO3)(4) has a charge-transfer dielectric gap. A rise in pressure is predicted to result in a crossover between the high-spin and low-spin states of the Fe ion, collapse of the magnetic moment, a weakening of Coulomb correlations, an abrupt reduction in the energy gap, and an insulator-semiconductor transition. (c) 2005 Pleiades Publishing, Inc.

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Публикация на русском языке Оптические свойства и электронная структура редкоземельных ферроборатов [Текст] / В. Н. Заблуда [и др.] // Физ. тверд. тела. - 2005. - Т. 47 Вып. 3. - С. 474-479

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok, 660036, Russian Federation

Доп.точки доступа:
Zabluda, V. N.; Заблуда, Владимир Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Potseluliko, A. M.; Kharlamova, S. A.
}
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16.

Investigation of the Josephson coupling through a magnetoactive barrier (ferrimagnet, paramagnet) in Y3/4Lu1/4Ba2Cu3O7+Y-3(Al1-xFex)(5)O-12 composites / D. A. Balaev [et al.] // Phys. Solid State. - 2006. - Vol. 48, Is. 11. - P. 2046-2055, DOI 10.1134/S1063783406110023. - Cited References: 41 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
S-F-S
   MAGNETIC-PROPERTIES
   RESISTIVE PROPERTIES
   JUNCTION NETWORK
   SUPERCONDUCTOR
   Y3FE5-XALXO12
   TRANSITION
   TRANSPORT
   METAL
   FIELD
Аннотация: The transport properties of two-phase composites consisting of a high-temperature superconductor and a nonsuperconducting component with magnetic ordering are analyzed. These composites are considered as a network of "superconductor-magnetoactive insulator-superconductor" weak links of the Josephson type. Substituted garnets Y-3(Al1 - x Fe (x) )(5)O-12 (x = 0, ..., 1.0) are used as a magnetoactive component. The composites under investigation contain 92.5 vol % Y3/4Lu1/4Ba2Cu3O7 (the high-temperature superconductor) and 7.5 vol % Y-3(Al1 - x Fe (x) )(5)O-12 (x = 0, ..., 1.0). It is shown that an increase in the iron content in the Y-3(Al1 - x Fe (x) )(5)O-12 garnet leads to a reduction of the Josephson coupling strength: the temperature range in which the electrical resistance of the composites is equal to zero is reduced, and the critical current density at a temperature of 4.2 K decreases exponentially. For composites in which the iron content in the Y-3(Al1 - x Fe (x) )(5)O-12 garnet is higher than 0.1, the temperature dependence of the electrical resistance R(T) at temperatures below the transition point T-C of high-temperature superconductor crystallites has a portion in the range T-m -T-C where the resistance R(T) is independent of the transport current and the magnetic field strength. Below the temperature T-m , the dependences of the electrical resistance R(T) of the composites are nonlinear functions of the current and involve a considerable contribution from magnetoresistance. This behavior is characteristic of a network of Josephson junctions. The temperature T-m decreases with an increase in the iron content in the Y-3(Al1 - x Fe (x) )(5)O-12 garnet. The appearance of the above feature in the temperature dependences of the electrical resistance R(T) is interpreted as complete suppression of the Josephson coupling in the temperature range above T (m) due to the interaction of supercurrent carrier pairs with magnetic moments of iron atoms in the dielectric barriers separating high-temperature superconductor grains.

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Держатели документа:
Russian Acad Sci, Siberian Div, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Popkov, S. I.; Попков, Сергей Иванович; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Petrov, M. I.; Петров, Михаил Иванович
}
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17.

    Aleksandrov, K. S.
    Crystal chemistry and prediction of compounds with a structure of skutterudite type / K. S. Aleksandrov, B. V. Beznosikov // Crystallogr. Rep. - 2007. - Vol. 52, Is. 1. - P. 28-36, DOI 10.1134/S106377450701004X. - Cited References: 47 . - ISSN 1063-7745
Рубрики:
SUPERCONDUCTOR PROS4SB12
   MAGNETIC-PROPERTIES
   HIGH-PRESSURE
   RARE-EARTH
   TRANSITION
   LAFE4P12
Аннотация: Crystallochemical analysis of skutterudite-type structures in the BX3, AB(4)X(12), and A B-3' B4O12 compositions (A and B are metals; X = P, As, Sb) has been performed. Probable regions of structure formation are determined, thereby indicating that more than 270 new compounds of the AB4X12 composition can be synthesized.(1)

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Публикация на русском языке Александров, Кирилл Сергеевич. Кристаллохимия и прогноз соединений со структурой типа скуттерудита [Текст] / К. С. Александров, Б. В. Безносиков // Кристаллография. - 2007. - Т. 52 Вып. 1. - С. 32-40

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Beznosikov, B. V.; Безносиков, Борис Валерьевич; Александров, Кирилл Сергеевич
}
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18.

Mossbauer studies of FexMn1-xS single crystals / G. M. Abramova [et al.] // Phys. Solid State. - 2008. - Vol. 50, Is. 2. - P. 237-240, DOI 10.1134/S1063783408020042. - Cited References: 16 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
METAL-INSULATOR-TRANSITION
   MAGNETIC-PROPERTIES
   ALPHA-MNS
   SULFIDES
   MAGNETORESISTANCE
   PRESSURE
   SYSTEM
   OXIDES
Аннотация: Single crystals of iron manganese sulfides FexMn1-xS (0.25

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Держатели документа:
[Abramova, G. M.
Petrakovskii, G. A.
Bayukov, O. A.
Bovina, A. F.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Varnek, V. A.
Sokolov, V. V.] Russian Acad Sci, Siberian Branch, Nikolaev Inst Inorgan Chem, Novosibirsk 630090, Russia
ИФ СО РАН

Доп.точки доступа:
Abramova, G. M.; Абрамова, Галина Михайловна; Petrakovskii, G. A.; Петраковский, Герман Антонович; Bayukov, O. A.; Баюков, Олег Артемьевич; Varnek, V. A.; Sokolov, V. V.; Bovina, A. F.; Бовина, Ася Федоровна
}
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19.

Solid-phase synthesis of solid solutions in Cu/Ni(001) epitaxial nanofilms / V. . Myagkov [et al.] // JETP Letters. - 2008. - Vol. 88, Is. 8. - P. 515-519, DOI 10.1134/S0021364008200101. - Cited References: 30. - This work was supported by Russian Foundation for Basic Research (project no. 07-03-00190). . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
HIGH-TEMPERATURE SYNTHESIS
   CU-NI SYSTEM
   THIN-FILMS
   MARTENSITIC TRANSFORMATIONS
   MAGNETIC-PROPERTIES
   MULTILAYERED FILMS
   ATOM-PROBE
   STABILITY
   GROWTH
   INTERDIFFUSION
Аннотация: Solid-phase synthesis of solid solutions in the epitaxial Cu/Ni(001) bilayer film systems of compositions 3Cu: 1Ni, 1Cu: 1Ni, and 1Cu: 3Ni has been studied using the X-ray diffraction methods. The saturation magnetization and the magnetic crystallographic anisotropy constant on nickel vary in accordance with the solid solution formation. The initiation temperature of the solid solutions is about 350 A degrees C and is independent of the Ni: Cu layer thickness ratio. The solid-phase synthesis of the solid solutions is presumably attributed to the transport of the Cu atoms to the epitaxial Ni(001) layer. It is found that the solid-phase synthesis in the Cu/Ni bilayer nanofilms and multilayers is determined by the spinodal decomposition in the Cu-Ni system.

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Держатели документа:
[Myagkov, V. G.
Bykova, L. E.
Zhigalov, V. S.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Bondarenko, G. N.] Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia
ИФ СО РАН
ИХХТ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Myagkov, V. G.; Мягков, Виктор Григорьевич; Bykova, L. E.; Быкова, Людмила Евгеньевна; Bondarenko, G.; Zhigalov, V. S.; Жигалов, Виктор Степанович
}
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20.

Specific features of spin, charge, and orbital ordering in cobaltites / N. B. Ivanova [et al.] // Phys. Usp. - 2009. - Vol. 52, Is. 8. - P. 789-810, DOI 10.3367/UFNe.0179.200908b.0837. - Cited References: 278. - This work was financially supported by the RFBR (projects 09-02-00171-a, 07-02-00226, and 09-02-00127), the Federal Agency of Science and Innovation (grant MK-4278.2008.2), and the Presidium of the Russian Academy of Sciences Program No. 5, Quantum Physics of Condensed Media (project No. 7). I.M.E.'s work was supported by the program for Leading Science Schools of the Ministry of Education and Science of the Russian Federation (grant 2.1.1/3199). . - ISSN 1063-7869

РУБ Physics, Multidisciplinary
Рубрики:
PEROVSKITE-TYPE OXIDES
   METAL-INSULATOR-TRANSITION
   HIGH-TEMPERATURE SUPERCONDUCTIVITY
   ONE-DIMENSIONAL CA3CO2O6
   ELECTRONIC-STRUCTURE
   MAGNETIC-PROPERTIES
   TRANSPORT-PROPERTIES
   STATE TRANSITION
   FUEL-CELLS
   CRYSTAL-STRUCTURE
Кл.слова (ненормированные):
Cobalt oxides -- Lanthanides -- Orbital degrees of freedom -- Orbital ordering -- Quasi-one-dimensional -- Spin state -- Superconducting compounds -- Theoretical result -- Calcium -- Cobalt -- Lanthanum -- Oxide minerals -- Perovskite -- Spin dynamics -- Superconductivity -- Cobalt compounds
Аннотация: Complex cobalt oxides known as cobaltites are reviewed, including LnCoO(3)-based perovskite-structured rare-earth cobaltites (where Ln is lanthanum or a lanthanide), quasi-two-dimensional and quasi-one-dimensional cobaltites of the types LnCo(2)O(5+delta), La2CoO4, and Ca3Co2O8, and NaxCoO2 center dot yH(2)O superconducting compounds. Key experimental and theoretical results are presented, with emphasis on the interplay between charge, spin, and orbital degrees of freedom. Two problems of specific relevance to cobaltites - the spin state instability of Co3+ ions in LnCoO(3), and the nature of superconductivity in NaxCoO2 center dot yH(2)O - are also given significant attention.

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Держатели документа:
[Ivanova, N. B.
Ovchinnikov, S. G.] Siberian Fed Univ, Krasnoyarsk 660074, Russia
[Ovchinnikov, S. G.
Korshunov, M. M.
Kazak, N. V.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Korshunov, M. M.
Eremin, I. M.] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
[Eremin, I. M.] Kazan VI Lenin State Univ, Kazan 420008, Russia
ИФ СО РАН
Siberian Federal University, ul. Kirenskogo 26, 660074 Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50-38, 660036 Krasnoyarsk, Russian Federation
Max-Planck-Institut FuE R Physik Komplexer Systeme, NoE thnitzer Straue 38, D-01187 Dresden, Germany
Kazan State University, ul. Kremlevskaya 18, 420008 Kazan, Russian Federation

Доп.точки доступа:
Ivanova, N. B.; Иванова, Наталья Борисовна; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Korshunov, M. M.; Коршунов, Максим Михайлович; Eremin, I. M.; Kazak, N. V.; Казак, Наталья Валерьевна; RFBR [09-02-00171-a, 07-02-00226, 09-02-00127]; Federal Agency of Science and Innovation [MK-4278.2008.2]; Presidium of the Russian Academy of Sciences [5, 7]; Leading Science Schools of the Ministry of Education and Science of the Russian Federation [2.1.1/3199]
}
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