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LOW-TEMPERATURE ANOMALIES OF ELECTRIC AND MAGNETIC-PROPERTIES OF VANADIUM MONOSULFIDE / G. V. LOSEVA [и др.] // Fiz. Tverd. Tela. - 1989. - Vol. 31, Is. 8. - P. 288-289. - Cited References: 7 . - ISSN 0367-3294

РУБ Physics, Condensed Matter

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Доп.точки доступа:
LOSEVA, G. V.; MUKOED, G. M.; KLIMENKO, A. G.; KISELEV, N. I.
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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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Bulgakov, E. N.
Mixing of bound states with electron transport by a radiation field in waveguides / E. N. Bulgakov, A. F. Sadreev // J. Exp. Theor. Phys. - 1998. - Vol. 87, Is. 6. - P. 1058-1067, DOI 10.1134/1.558621. - Cited References: 27 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
CLASSICALLY UNBOUND SYSTEM
   HALL RESISTANCE ANOMALIES
   QUANTUM WAVE-GUIDES
   POINT CONTACTS
   WIRES
   TIME
   CONDUCTANCE
Аннотация: Electron transmission in the two-, three-, and four-terminal nanostructures is considered under the influence of a radiation field. The frequency of the radiation field is tuned to the transition between the energy of a bound state and the Fermi energy of the incident electrons. The radiation induced resonant peaks and dips of the electron transport are exhibited for zero and low magnetic fields. It is shown that rotation of the radiation field polarization can effectively control the electron transport into different electrodes attached to the structures because of the symmetry of the structures. The resonant anomalies of the Hall resistance are found in a weak magnetic field. (C) 1998 American Institute of Physics. [S1063-7761(98)00412-0].

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Abo Akad Univ, Inst Fys, Dept Phys, SF-20500 Abo, Finland
ИФ СО РАН

Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич
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Observation of mixed two-phase state in Eu0.7Pb0.3MnO3 single crystal by magnetic resonance method / N. V. Volkov [et al.] // Physica B. - 2002. - Vol. 324, Is. 1-4. - P. 254-260, DOI 10.1016/S0921-4526(02)01397-2. - Cited References: 19 . - ISSN 0921-4526

РУБ Physics, Condensed Matter
Рубрики:
OPTIMALLY DOPED MANGANITES
   COLOSSAL MAGNETORESISTANCE
   PARAMAGNETIC ANOMALIES
   CURIE-TEMPERATURE
   LA1-XCAXMNO3
   RELAXATION
   SEPARATION
Кл.слова (ненормированные):
manganites -- CMR -- magnetic resonance -- phase separation -- CMR -- Magnetic resonance -- Manganites -- Phase separation -- Europium compounds -- Ferromagnetic materials -- Paramagnetic resonance -- Phase separation -- Phase transitions -- Manganites -- Single crystals
Аннотация: The magnetic resonance measurements show that the mixed two-phase state takes place in the Eu0.7Pb0.3MnO3 single crystal. The coexistence of the magnetic phases is observed in vicinity of the magnetic phase transition, where the sample exhibits the effect of the CMR. The frequency-field dependencies of the spectra allow to conclude that these phases are paramagnetic and ferromagnetic ones. Moreover, the study of the frequency dependencies shows the sensitivity of the mixed-phase state to the external magnetic field. This suggests that the scenario of the phase separation is realized in this case and the mixed two-phase state is not related to simple chemical inhomogeneity. (C) 2002 Elsevier Science B.V. All rights reserved.

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Держатели документа:
RAS, SB, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
L.V. Kirensky Institute of Physics SB RAS, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Petrakovskii, G. A.; Петраковский, Герман Антонович; Vasiliev, V. N.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Sablina, K. A.; Саблина, Клара Александровна; Patrin, K. G.; Патрин, Константин Геннадьевич
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Raman spectra and pressure-induced lattice instabilities in RbMnCl3 crystal / A. N. Vtyurin [et al.] // 11th International Conference on Phonon Scattering in Condensed Matter (PHONONS 2004) (JUL 25-30, 2004, St Petersburg, RUSSIA) : WILEY-V C H VERLAG GMBH, 2004. - 11th International Conference on Phonon Scattering in Condensed Matter (PHONONS 2004) (JUL 25-30, 2004, St Petersburg, RUSSIA). - P. 3097-3100, DOI 10.1002/pssc.200405332. - Cited References: 14 . - ISBN 3-527-40588-7

РУБ Physics, Condensed Matter
Рубрики:
PHASE-TRANSITION
SPECTROSCOPY
Кл.слова (ненормированные):
Frequencies -- Hydrostatic pressure -- Mathematical models -- Parameter estimation -- Raman scattering -- Spectrometers -- Stability -- Ambient conditions -- Anomalies -- Lattice instabilities -- Structural units -- Rubidium compounds
Аннотация: Raman scattering spectra of the RbMnCl3 crystal have been studied under ambient conditions and under high hydrostatic pressure. The results produced have been interpreted with the ab initio model. The experimental data agree well with the estimated values in the low frequency range and show a slightly worse agreement at higher frequencies. A phase transition from the hexagonal phase to the perovskite phase predicted earlier within the same model was observed under high pressure (above 0.7 GPa) and new transitions to lower symmetry phases were found at higher pressures (1.1 GPa and 5 GPa). (C) 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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Держатели документа:
Kirensky Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, 660036 Krasnoyarsk, Russian Federation
Inst. of Mineralogy and Petrography, 630090 Novosibirsk, Russian Federation

Доп.точки доступа:
Vtyurin, A. N.; Втюрин, Александр Николаевич; Goryainov, S. V.; Krylov, A. S.; Крылов, Александр Сергеевич; Krylova, S. N.; Крылова, Светлана Николаевна; Shefer, A. D.; Zamkova, N. G.; Замкова, Наталья Геннадьевна; Zinenko, V. I.; Зиненко, Виктор Иванович
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Aplesnin, S. S.
Anomalies in transport properties in a magnetically ordered region on a Kondo lattice / S. S. Aplesnin // JETP Letters. - 2005. - Vol. 81, Is. 2. - P. 66-71, DOI 10.1134/1.1887917. - Cited References: 33 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
DOUBLE EXCHANGE MODEL
   PHASE-SEPARATION
   MANGANITES
   LA1-XSRXMNO3
   SYSTEMS
   SHIFT
   EDGE
Аннотация: The temperature dependences of resistivity and thermal emf on a Kondo lattice are calculated using the spinpolaron approximation. The peaks and sign reversal points of thermal emf as a function of temperature and concentration below the temperature of the transition to the paramagnetic state are determined. The concentration region containing the metal-insulator transition below the Curie temperature and the shift of the upper spin-polaron band are calculated. (c) 2005 Pleiades Publishing, Inc.

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Публикация на русском языке Аплеснин, Сергей Степанович. Аномалии транспортных свойств в магнитоупорядоченной области на кондо-решетке [Текст] / С. С. Аплеснин // Письма в журн. эксперим. и техн. физ. - 2005. - Т. 81 Вып. 2. - С. 74-79

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

Доп.точки доступа:
Аплеснин, Сергей Степанович
}
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Investigation of the anomalies of the magnetoelectric and magnetoelastic properties of single crystals of the ferroborate GdFe3(BO3)(4) at phase transitions / A. M. Kadomtseva [et al.] // Low Temp. Phys. - 2005. - Vol. 31, Is. 8-9. - P. 807-813 ; Физика низких температур, DOI 10.1063/1.2008142. - Cited References: 14 . - ISSN 1063-777X

РУБ Physics, Applied
Рубрики:
IRON BORATE GDFE3(BO3)(4)
OPTICAL SPECTROSCOPY
Аннотация: The transformation of various properties of gadolinium ferroborate single crystals at phase transitions, both spontaneous and induced by magnetic fields up to 200 kOe, is investigated theoretically and experimentally. Particular attention is paid to elucidating the role of magnetoelectric interactions and the change in them at spin-reorientation transitions accompanied by a change of magnetic symmetry. With that goal the magnetoelastic and magnetoelectric properties of the system are investigated over a wide range of temperatures for two orientations of the magnetic field, H parallel to c and H perpendicular to c, and a fundamental difference of the character of the field dependences of the magnetostriction and electric polarization is found. In the framework of a symmetry approach a description of the magnetic structures and their transformations in the system GdFe3(BO3)(4) is proposed, and an interpretation of the experimentally observed properties is given. (C) 2005 American Institute of Physics.

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Держатели документа:
Moscow MV Lomonosov State Univ, Moscow 119992, Russia
Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia
Russian Acad Sci, LV Kirensky Inst Gen Phys, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
M. V. Lomonosov Moscow State University, Vorob'evy gory, Moscow 119992, Russian Federation
Institute of General Physics, Russian Academy of Sciences, Moscow 119991, Russian Federation
L. V. Kirensky Institute of General Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Kadomtseva, A. M.; Popov, Y. F.; Krotov, S. S.; Vorob'ev, G. P.; Popova, E. A.; Zvezdin, A. K.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич

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Heat capacity study of relaxors BaTi0.65Zr0.35O3 and BaTi0.60Zr0.40O3 / M. . Gorev [et al.] // J. Phys.: Condens. Matter. - 2006. - Vol. 18, Is. 17. - P. 4407-4416, DOI 10.1088/0953-8984/18/17/026. - Cited References: 21 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
CERAMICS
BA(TI1-XZRX)O-3
BATIO3
Кл.слова (ненормированные):
Calorimetry -- Composition -- Data reduction -- Lead compounds -- Mathematical models -- Permittivity -- Specific heat -- Adiabatic calorimetry -- Burns temperature -- Diffuse anomalies -- Barium compounds
Аннотация: The heat capacity of two relaxors BaTi(1-x)ZrxO(3) (x = 0.35, 0.40) was measured using adiabatic calorimetry in the temperature range 100-360 K. The Cp(T) dependence of both compositions is characterized by the presence of two diffuse anomalies near the Burns temperature T-d and the temperature of the maximum in permittivity T-m in the temperature ranges 250-350 K and 120 200 K. The anomalous heat capacity near T-d was analysed taking into account the distribution of Zr concentration in nanoregions leading to the distribution of their transition temperatures into the polar phase. Excess heat capacity near Tm was discussed in the framework of the spherical random bond-random field model. The results are compared with the data obtained by the same procedures for PbMg1/3Nb2/3O3 studied experimentally earlier.

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
CNRS, CEMES, F-31055 Toulouse, France
ИФ СО РАН
L V Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
CEMES-CNRS, 31055 Toulouse, France

Доп.точки доступа:
Gorev, M.; Bondarev, V.; Sciau, P.; Savariault, J. M.
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Magnetic field effect and dielectric anomalies at the spin reorientation phase transition of GdFe3(BO3)(4) / F. . Yen [et al.] // Phys. Rev. B. - 2006. - Vol. 73, Is. 5. - Ст. 54435, DOI 10.1103/PhysRevB.73.054435. - Cited References: 21 . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
IRON BORATE GDFE3(BO3)(4)
   HOMNO3
   ANISOTROPY
   PR
   SM
Аннотация: GdFe3(BO3)(4) exhibits a structural phase transition at 156 K, antiferromagnetic order of the Fe3+ moments at 36 K, followed by a spin reorientation phase transition at 9 K. The reorientation phase transition is studied through dielectric, magnetic, and heat capacity measurements under the application of external magnetic fields of up to 7 kOe. The dielectric constant indicates the existence of two distinct anomalies at T-SR=9 K that separate in temperature under external magnetic fields. The spin rotation phase transition is proven to be of the first-order nature through the magnetic analog of the Clausius-Clapeyron equation. Magnetodielectric effect of up to 1% is observed at 8 K and 7 kOe. The uniaxial magnetocaloric effect along the c axis is observed below the spin reorientation phase transition of 9 K.

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Держатели документа:
Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA
Univ Houston, Dept Phys, Houston, TX 77204 USA
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
Hong Kong Univ Sci & Technol, Hong Kong, Hong Kong, Peoples R China
Russian Acad Sci, Siberian Div, Inst Phys, Krasnoyarsk 660036, Russia
Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119992, Russia
ИФ СО РАН
Texas Center for Superconductivity of the University of Houston, Department of Physics, University of Houston, Houston, TX 77204-5002, United States
Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, United States
Hong Kong University of Science and Technology, Hong Kong, Hong Kong
Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Faculty of Physics, Moscow State University, Moscow, 119992, Russian Federation

Доп.точки доступа:
Yen, F.; Lorenz, B.; Sun, Y. Y.; Chu, C. W.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Vasiliev, A. N.
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10.

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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