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Caloric characteristics of PbTiO3 in the temperature range of the ferroelectric phase transition / E. A. Mikhaleva [et al.] // Phys. Solid State. - 2012. - Vol. 54, Is. 9. - P. 1832-1840, DOI 10.1134/S1063783412090181. - Cited References: 31. - This study was supported by the Russian Foundation for Basic Research (project no. 12-08-00079) and the Council on Grants from the President of the Russian Federation for Support of Leading Scientific Schools of the Russian Federation (grant no. NSh-4828.2012.2). . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
SINGLE-CRYSTALS
   LEAD TITANATE
   DIELECTRIC PROPERTIES
   SOLID-SOLUTIONS
   PRESSURE
   PEROVSKITES
   DEPENDENCE
   BEHAVIOR
   HEAT
Аннотация: The heat capacity and thermal expansion of the PbTiO3 ceramic sample have been measured in the temperature range 80–970 K. The electrocaloric and barocaloric efficiencies of lead titanate in the ferroelectric phase transition range have been investigated by analyzing the experimental data in terms of the thermodynamic theory of phase transitions, the electrical equation of state P(T, E), the Pippard equation, and the S(T, p) diagram.

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Публикация на русском языке Калорические характеристики PbTiO3 в области сегнетоэлектрического фазового перехода [Текст] / Е. А. Михалева [и др.] // Физ. тверд. тела : Физико-технический институт им. А.Ф.Иоффе РАН, 2012. - Т. 54 Вып. 9. - С. 1719-1726

Держатели документа:
[Mikhaleva, E. A.
Flerov, I. N.
Gorev, M. V.] Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660074, Russia
[Mikhaleva, E. A.
Flerov, I. N.
Gorev, M. V.
Molokeev, M. S.
Cherepakhin, A. V.
Kartashev, A. V.
Mikhashenok, N. V.
Sablina, K. A.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Mikhaleva, E. A.; Михалева, Екатерина Андреевна; Flerov, I. N.; Флёров, Игорь Николаевич; Gorev, M. V.; Горев, Михаил Васильевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Kartashev, A. V.; Карташев, Андрей Васильевич; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Sablina, K. A.; Саблина, Клара Александровна
}
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    Growth, optical and microstructural properties of PbB4O7 plate crystals / A. I. Zaitsev [et al.] // Opt. Mater. - 2014. - Vol. 37. - P. 298–301, DOI 10.1016/j.optmat.2014.06.012. - Cited References: 42. - This study is supported by SB RAS via Projects 28.14 and 43.14, and the Grant of the President of the Russian Federation for the support of leading scientific schools SS-4828.2012.2 and by PSB RAS, Grant 2.5.2. V.V.A. gratefully acknowledge the Ministry of Education and Science of the Russian Federation for financial support . - ISSN 0925-3467. - ISSN 1873-1252
   Перевод заглавия: Рост, оптические и микроструктурные свойства пластинчатых кристаллов PbB4O7

РУБ Materials Science, Multidisciplinary + Optics
Рубрики:
LEAD TETRABORATE
   SINGLE-CRYSTAL
   SUSCEPTIBILITIES
   ANISOTROPY
   STRONTIUM
   SURFACES
   RAMAN
Кл.слова (ненормированные):
PbB4O7 -- Czochralski growth -- Facet -- RHEED -- AFM
Аннотация: Centimeter-sized optical quality plate-like PbB4O7 crystals have been grown by Czochralski method. The fundamental absorption edge has been found at 237 nm (corresponding bandgap 5.75 eV) with the distinct sideband protruding up to 300 nm. The crystals are well faceted with the (100), (010) and (101) planes, (100) surfaces being mostly developed. The etching in diluted nitric acid (5 wt.%) at the temperature of 90 °C have been used to reveal the defect structure and remove melt residuals. The (100) surface shows the presence of etching pits and twin boundaries. The Kikuchi line pattern and developed microrelief with the roughness of ~8 nm have been observed by RHEED and AFM, respectively.

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Держатели документа:
SB RAS, Akademgorodok, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 690036, Russia
Akademgorodok, SB RAS, Kirensky Inst Phys, Lab Coherent Opt, Krasnoyarsk 690036, Russia
Russian Acad Sci, Inst Semicond Phys, Lab Nanodiagnost & Nanolithog, SB RAS, Novosibirsk 630090, Russia
Russian Acad Sci, Inst Semicond Phys, Lab Opt Mat & Struct, SB RAS, Novosibirsk 630090, Russia
Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia
Novosibirsk State Univ, Novosibirsk 630090, Russia

Доп.точки доступа:
Zaitsev, A. I.; Зайцев, Александр Иванович; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Kozhukhov, A. S.; Pokrovsky, L. D.; Atuchin, V. V.; SB RAS [28.14, 43.14]; President of the Russian Federation for the support of leading scientific schools [SS-4828.2012.2]; PSB RAS [2.5.2]; Ministry of Education and Science of the Russian Federation
}
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A complex of ceftriaxone with Pb(II): synthesis, characterization, and antibacterial activity study / A. O. Lykhin [et al.] // J. Coord. Chem. - 2014. - Vol. 67, Is. 16. - З. 2783-2794, DOI 10.1080/00958972.2014.938065. - Cited References: 48. - The reported study was supported by RFBR, research project No. 14-03-31, 170 MOJI_a and Krasnoyarsk regional fund for supporting scientific and technological activities. We thank the Center for Equipment Joint Use of the Siberian Federal University. We are grateful to the HPC Research Departments of Siberian Federal University and Moscow University Supercomputing Center (SKIF MSU "Chebyshev") for the access to the high-performance computer clusters. . - ISSN 0095-8972. - ISSN 1029-0389

РУБ Chemistry, Inorganic & Nuclear
Рубрики:
BETA-LACTAM ANTIBIOTICS
   TERNARY COMPLEX
   METAL-COMPLEXES
   BASIS-SETS
   3 DECADES
   RESISTANCE
   COPPER(II)
   CEPHALOSPORINS
   EVOLUTION
   1ST-ROW
Кл.слова (ненормированные):
Ceftriaxone lead(II) complex -- DFT -- IR spectroscopy -- TGA -- Antibacterial screening
Аннотация: A Pb(II) complex with ceftriaxone (H2Ceftria) antibiotic was synthesized by reaction of ceftriaxone disodium salt (hemi)heptahydrate with lead nitrate in water–ethanol medium. The complex was characterized on the basis of complexometric titration, spectrophotometric and thermogravimetric analyses, capillary electrophoresis, IR, Raman and UV–vis spectroscopies, and density functional theory calculations. Pb(II) is five-coordinate with distorted square pyramidal geometry. The coordination of Ceftria2− to Pb(II) occurs through N and O of the triazine, lactam carbonyl, carboxylate, and amine groups. The antibacterial activity study showed that Klebsiella pneumoniae is resistant to [Pb(Ceftria)]·3H2O. The antibacterial activity of [Pb(Ceftria)]·3H2O against Staphylococcus aureus is reduced compared with ceftriaxone. In contrast, the antibacterial activity of [Pb(Ceftria)]·3H2O against Escherichia coli is 28% higher than that of ceftriaxone antibiotic.

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Держатели документа:
Siberian Fed Univ, Dept Chem, Krasnoyarsk, Russia
Siberian State Aerosp Univ, Informat Sci & Telecommun Inst, Krasnoyarsk, Russia
Russian Acad Sci, LV Kirensky Inst Phys, Siberian Branch, Krasnoyarsk, Russia
Siberian State Technol Univ, Dept Phys, Krasnoyarsk, Russia
Univ Nevada, Dept Chem, Reno, NV 89557 USA

Доп.точки доступа:
Lykhin, A. O.; Лыхин А. О.; Novikova, G. V.; Новикова Г. В.; Kuzubov, A. A.; Кузубов, Александр Александрович; Staloverova, N. A.; Сталоверова Н. А.; Sarmatova, N. I.; Сарматова Н. И.; Varganov, S. A.; Варганов, Сергей Александрович; Krasnov, P. O.; Краснов, Павел Олегович; RFBR [14-03-31, 170 MOJI_a]
}
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Acoustical and acoustooptical properties of lead tetraborate single crystals / K. S. Aleksandrov [et al.] // Phys. Solid State. - 2004. - Vol. 46, Is. 9. - P. 1637-1638, DOI 10.1134/1.1799178. - Cited References: 6 . - ISSN 1063-7834
Рубрики:
STRONTIUM
Аннотация: The velocities of bulk acoustic waves and the acoustooptical Q factors M-2 are measured. The results of these measurements are used for calculating the photoelastic coefficients of a lead tetraborate single crystal. (C) 2004 MAIK "Nauka/Interperiodica".

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Публикация на русском языке Акустические и акустооптические свойства монокристаллов тетрабората свинца [Текст] / К. С. Александров [и др.] // Физ. тверд. тела. - 2004. - Т. 46 Вып. 9. - С. 1586-1587

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660062, Russia

Доп.точки доступа:
Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Zamkov, A. V.; Замков, Анатолий Васильевич; Zaitsev, A. I.; Зайцев, Александр Иванович; Turchin, P. P.; Sysoev, A. M.; Parfenov, A. A.
}
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    Studies of ferroelectric and magnetic phase transitions in multiferroic PbFe0.5Ta0.5O3 / I. P. Raevski [et al.] // Ferroelectrics. - 2015. - Vol. 475, Is. 1 : Special Issue: Proceedings of International Conference of Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials (PFM-2014) Part I of III. - P. 52-60, DOI 10.1080/00150193.2015.995009. - Cited References:26. - This study is partially supported by the Russian Foundation for Basic Research (RFBR) project (projects 12-08-00887_a and 14-02-90438_Ucr_a), Ministry of education and science of Russian Federation (research project 2132, task 2014/174), Southern Federal University grant 213.01-2014/012-VG and Research Committee of the University of Macau under Research & Development Grant for Chair Professor. . - ISSN 0015. - ISSN 1563-5112
   Перевод заглавия: Исследование сегнетоэлектрического и магнитного фазовых переходов в мультиферроике PbFe0.5Ta0.5O3

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
NEUTRON POWDER DIFFRACTION
Pb(Fe1/2Ta1/2)O-3
Кл.слова (ненормированные):
Lead iron tantalate -- multiferroic -- ferroelectric -- lattice parameters -- phase transition
Аннотация: X-ray, magnetic, and Mossbauer studies of a PbFe0.5Ta0.5O3 powder have been carried out. For the first time temperature dependence of the unit cell parameters was obtained. Antiferromagnetic Neel temperature T-N approximate to 180K was determined using the results of Mossbauer studies. In the vicinity of T-N an anomaly in the temperature dependence of the monoclinic angle beta was revealed in PFT. This anomaly seems to be due to the magnetoelectric coupling.

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Доп.точки доступа:
Raevski, I. P.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Misyul, S. V.; Мисюль, Сергей Валентинович; Eremin, E. V.; Еремин, Евгений Владимирович; Blazhevich, A. V.; Kubrin, S. P.; Sarychev, D. A.; Titov, V. V.; Chen, H.; Chou, C. -C.; Raevskaya, S. I.; Malitskaya, M. A.; Russian Foundation for Basic Research (RFBR) [12-08-00887_a, 14-02-90438_Ucr_a]; Ministry of education and science of Russian Federation [2132, 2014/174]; Southern Federal University [213.01-2014/012-VG]; Research Committee of the University of Macau under Research & Development Grant for Chair Professor; International Conference of Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials(14-17 July 2014 ; Ekaterinburg, Russia)
}
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Golovnev, N. N.
The crystal structure of lead(II) 1,3-diethyl-2-thiobarbiturate / N. N. Golovnev, M. S. Molokeev, I. I. Golovneva // Russ. J. Coord. Chem. - 2015. - Vol. 41, Is. 5. - P. 300-304, DOI 10.1134/S1070328415050012. - Cited References:25 . - ISSN 1070. - ISSN 1608-3318. -

РУБ Chemistry, Inorganic & Nuclear
Рубрики:
HYDROGEN-BOND
   COMPLEXES
   ACID
   2-THIOBARBITURATE
   DIFFRACTION
   SERIES
Аннотация: The complex [Pb2(DETBA)4] n (I), where HDETBA is 1,3-diethyl-2-thiobarbituric acid (C8H12N2O2S), was obtained and structurally characterized by X-ray diffraction (CIF file CCDC no. 1031501). The crystals of complex I are trigonal: a = 12.9503(3), c = 32.077(1) Å, V = 4658.9(3) Å3, space group R3¯ , Z = 9. One of the crystallographically independent lead ions, Pb(1)2+, is coordinated in an octahedral fashion by six DETBA− ions through the O atoms. The other ion, Pb(2)2+, is coordinated to six DETBA− ions through three O atoms and three S atoms making up a trigonal prism. The polyhedra Pb(1)O6 and Pb(2)O6 are united through bridging DETBA− ions into infinite layers. The ligands are linked by neither intermolecular hydrogen bonds nor π-π interactions.

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Публикация на русском языке Головнёв, Николай Николаевич. Кристаллическая структура 1,3-диэтил-2-тиобарбитурата свинца(II) [Текст] / Н. Н. Головнёв, М. С. Молокеев, И. И. Головнева // Координ. химия : Наука, 2015. - Т. 41 № 5. - С. 266–270

Держатели документа:
Siberian Fed Univ, Krasnoyarsk, Russia.
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk, Russia.
Far Eastern State Transport Univ, Khabarovsk, Russia.
State Agr Univ, Krasnoyarsk, Russia.

Доп.точки доступа:
Molokeev, M. S.; Молокеев, Максим Сергеевич; Golovneva, I. I.
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    Ultrafine particles derived from mineral processing: A case study of the Pb-Zn sulfide ore with emphasis on lead-bearing colloids / Y. Mikhlin [et al.] // Chemosphere. - 2016. - Vol. 147. - P. 60-66, DOI 10.1016/j.chemosphere.2015.12.096. - Cited References: 47. - This research was supported by the Russian Science Foundation, Grant No. 14-17-00280. . - ISSN 0045-6535
   Перевод заглавия: Ультрадисперсные частицы, полученные при переработке минерального сырья: комплексный анализ колчеданной руды Pb-Zn и коллоидных частиц, содержащих свинец

РУБ Environmental Sciences
Рубрики:
GALENA DISSOLUTION
   METALLIC COPPER
   NANOPARTICLES
   SOIL
   ENVIRONMENT
   SEPARATION
   TRANSPORT
   FLOTATION
   WATER
   SIZE
Кл.слова (ненормированные):
Lead sulfide -- Lead-zinc ore -- Lead sulfide -- Ultrafine particles -- Aquatic nanoparticles
Аннотация: Although mining and mineral processing industry is a vast source of heavy metal pollutants, the formation and behavior of micrometer- and nanometer-sized particles and their aqueous colloids entered the environment from the technological media has received insufficient attention to date. Here, the yield and characteristics of ultrafine mineral entities produced by routine grinding of the Pb-Zn sulfide ore (Gorevskoe ore deposit, Russia) were studied using laser diffraction analysis (LDA), dynamic light scattering (DLS) and zeta potential measurement, microscopy, X-ray photoelectron spectroscopy, with most attention given to toxic lead species. It was revealed, in particular, that the fraction of particles less that 1 ?m in the ground ore typical reaches 0.4 vol. %. The aquatic particles in supernatants were micrometer size aggregates with increased content of zinc, sulfur, calcium as compared with the bulk ore concentrations. The hydrodynamic diameter of the colloidal species decreased with time, with their zeta potentials remaining about -12 mV. The colloids produced from galena were composed of 20-50 nm PbS nanoparticles associated with lead sulfate and thiosulfate, while the surface oxidation products at precipitated galena were largely lead oxyhydroxides. The size and zeta potential of the lead-bearing colloids decreased with time down to about 100 nm and from -15 mV to -30 mV, respectively. And, conversely, lead sulfide nanoparticles were mobilized before the aggregates during redispersion of the precipitates in fresh portions of water. The potential environmental impact of the metal-bearing colloids, which is due to the large-scale production and relative stability, is discussed. © 2015 Elsevier Ltd.

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Держатели документа:
Inst. of Chemistry and Chemical Technology, Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 50/24, Krasnoyarsk, Russian Federation
Siberian Federal University, Svobodny pr. 79, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Mikhlin, Y.; Vorobyev, S.; Romanchenko, A.; Karasev, S.; Karacharov, A.; Zharkov, S. M.; Жарков, Сергей Михайлович
}
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Contributions from Inter-grain Boundaries to the Magneto-resistive Effect in Polycrystalline High-T (C) Superconductors. The Underlying Reason of Different Behavior for YBCO and BSCCO Systems / D. A. Balaev [et al.] // J. Supercond. Nov. Magn. - 2011. - Vol. 24, Is. 7. - P. 2129-2136, DOI 10.1007/s10948-011-1166-9. - Cited References: 30. - This work is supported by program N5 of RAS, project N7. . - ISSN 1557-1939

РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
HIGH-TEMPERATURE SUPERCONDUCTORS
   PHASE-SLIP
   TRANSPORT-PROPERTIES
   TRANSITION
   FIELD
   COMPOSITES
   BULK
   TAPES
   YBA2CU3O7-DELTA
   DISSIPATION
Кл.слова (ненормированные):
BSCCO -- YBCO -- Intergrain boundaries -- Magnetoresistance -- BSCCO -- Intergrain boundaries -- Magnetoresistance -- YBCO -- BSCCO -- BSCCO system -- Comparative studies -- High Tc superconductors -- High-field -- Inter-grain -- Irreversibility lines -- Magneto-resistive effect -- Polycrystalline -- Resistive transition -- Standard measurements -- Weak pinning -- YBCO -- Bismuth -- Electric resistance -- Grain boundaries -- High temperature superconductors -- Lead -- Magnetic fields -- Magnetoelectronics -- Magnetoresistance -- Magnetos -- Superconductivity -- Yttrium barium copper oxides -- Semiconductor metal boundaries
Аннотация: In order to clarify the mechanisms in charge of broadening of resistive transition R(T) in magnetic fields of bismuth-based polycrystalline high-T (C) superconductor (HTSC), a comparative study of Bi1.8Pb0.3Sr1.9Ca2Cu3O (x) (BSCCO) and YBa2Cu3O7-delta (YBCO) have been performed. Magnetoresistive effects and irreversibility line obtained from magnetic measurements have been studied. It was established that (1) for YBCO, the smooth part of R(T) dependence unambiguously corresponds to dissipation in the intergrain boundaries for arbitrary magnetic fields; (2) for polycrystalline BSCCO, the smooth part of R(T) dependences correspond to dissipation within intergrain boundary subsystem in the field range H <10(2) Oe only, while standard measurements of R(T) dependences in magnetic field range H > 10(2) Oe reflect the dissipation processes occurring both in intergrain boundary and HTSC grain subsystems; (3) for the high-field range, the contribution from intergrain boundaries of BSCCO can be distinguished from magnetoresistance R(H) dependences obtained at high enough current density on textured samples. It is proposed that various magneto-resistive properties of these classical HTSC systems are due comparatively weak pinning in BSCCO.

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Держатели документа:
[Balaev, D. A.
Popkov, S. I.
Semenov, S. V.
Bykov, A. A.
Dubrovskiy, A. A.
Shaikhutdinov, K. A.
Petrov, M. I.] LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
[Balaev, D. A.
Popkov, S. I.
Sabitova, E. I.
Dubrovskiy, A. A.
Shaikhutdinov, K. A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
L.V. Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Popkov, S. I.; Попков, Сергей Иванович; Semenov, S. V.; Семенов, Сергей Васильевич; Bykov, A. A.; Быков, Алексей Анатольевич; Sabitova, E. I.; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Petrov, M. I.; Петров, Михаил Иванович
}
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Relaxation of low-temperature magnetoresistance and magnetization of polycrystalline (La0.5Eu0.5)(0.7)Pb0.3MnO3 / K. A. Shaykhutdinov [et al.] // J. Phys. D. - 2011. - Vol. 44, Is. 25. - Ст. 255001, DOI 10.1088/0022-3727/44/25/255001. - Cited References: 34. - This work was partially supported by the Lavrentyev Competition of the Young Scientist's Projects of the Siberian Branch of the Russian Academy of Sciences, Project No 12. The authors are grateful to A D Balaev and V M Sosnin for useful discussions on the results. . - ISSN 0022-3727

РУБ Physics, Applied
Рубрики:
INSULATOR-METAL TRANSITION
   GRANULAR FILMS
   NANOPARTICLES
   PR0.7CA0.3MNO3
   PERCOLATION
   MANGANITES
Кл.слова (ненормированные):
Antiferromagnetic boundaries -- Characteristic value -- Ferromagnetic domains -- Ferromagnetic metal -- Lanthanum manganites -- Logarithmic law -- Low temperatures -- Magneto-resistive effect -- Polycrystalline -- Relative orientation -- Relaxation of magnetization -- Temperature fluctuation -- Time evolutions -- Time interval -- Tunnel magnetoresistance -- Antiferromagnetism -- Electric resistance -- Europium -- Ferromagnetic materials -- Ferromagnetism -- Grain boundaries -- Grain size and shape -- Lanthanum compounds -- Lead -- Magnetic domains -- Magnetic moments -- Magnetoelectronics -- Magnetoresistance -- Manganese oxide -- Magnetization
Аннотация: Hysteresis and relaxation of magnetoresistance and magnetization of substituted (La0.5Eu0.5)(0.7)Pb0.3MnO3 lanthanum manganite in a low-temperature region (< 40 K) are investigated. It is shown that at these temperature features of the magnetoresistive effect are determined mainly by spin-dependent tunnelling of carriers via insulating grain boundaries. As was demonstrated previously, the grain boundaries may be antiferromagnetically ordered. Therefore, relaxation of magnetization and resistance is determined by the processes of relative orientation of the magnetic moments of ferromagnetic domains neighbouring the antiferromagnetic boundary of ferromagnetic domains under the action of temperature fluctuations. It is shown that relaxation follows the logarithmic law within the time interval t similar to 10(2)-3x10(3) s. A comparison between time evolutions of the magnetic moment and resistance shows that magnetoresistance and magnetization are related as delta R = delta M-n, where n = 2.5. The obtained value n is close to the characteristic value n = 2 for tunnel magnetoresistance of granular ferromagnetic metal/insulator systems.

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Держатели документа:
[Shaykhutdinov, K. A.
Balaev, D. A.
Semenov, S. V.
Popkov, S. I.
Dubrovskiy, A. A.
Sapronova, N. V.
Volkov, N. V.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Balaev, D. A.; Балаев, Дмитрий Александрович; Semenov, S. V.; Семенов, Сергей Васильевич; Popkov, S. I.; Попков, Сергей Иванович; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Sapronova, N. V.; Volkov, N. V.; Волков, Никита Валентинович
}
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10.

Low-temperature resistance and magnetoresistance hysteresis in polycrystalline (La0.5Eu0.5)(0.7)Pb0.3MnO3 / K. A. Shaykhutdinov [et al.] // J. Appl. Phys. - 2011. - Vol. 109, Is. 5. - Ст. 53711, DOI 10.1063/1.3559303. - Cited References: 20. - This study was partially supported by the Russian Foundation for Basic Research, Project No. 08-02-00259a and the Lavrentyev Competition of the Young Scientists' Projects of the Siberian Branch of the Russian Academy of Sciences, Project No. 12. . - ISSN 0021-8979

РУБ Physics, Applied
Рубрики:
RESISTIVITY MINIMUM
MANGANITES
FILMS
Кл.слова (ненормированные):
Antiferromagnets -- Electrical resistances -- Ferromagnets -- Field dependence -- Inter-grain -- Lanthanum manganites -- Low temperatures -- Low-temperature resistance -- Polycrystalline -- Temperature dependence -- Tunnel contacts -- Antiferromagnetic materials -- Europium -- Ferromagnetic materials -- Ferromagnetism -- Hysteresis -- Lead -- Magnetic field effects -- Magnetoelectronics -- Magnetoresistance -- Magnets -- Manganese oxide -- Paramagnetism -- Superconducting materials -- Electric resistance
Аннотация: The behavior of temperature dependences of electrical resistance and magnetoresistance of polycrystalline substituted lanthanum manganite (La0.5Eu0.5)(0.7)Pb0.3MnO3 at low temperatures was thoroughly studied. A broad hysteresis was found in the field dependences of electrical resistance in the low-temperature region. Above 40 K, no hysteresis feature was observed. The temperature T = 40 K corresponds to the temperature of minimum electrical resistance and the temperature T-N to the antiferromagnet-paramagnet phase transition of the material of the intergrain boundaries. In this work we propose a model which explains the observed features of the rho(T) and rho(H) curves at temperatures below T-N by the formation of a network of ferromagnet-antiferromagnet-ferromagnet tunnel contacts. (C) 2011 American Institute of Physics. [doi:10.1063/1.3559303]

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Держатели документа:
[Shaykhutdinov, K. A.
Popkov, S. I.
Semenov, S. V.
Balaev, D. A.
Dubrovskiy, A. A.
Sablina, K. A.
Sapronova, N. V.
Volkov, N. V.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Shaykhutdinov, K. A.
Balaev, D. A.
Dubrovskiy, A. A.
Volkov, N. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Krasnoyarsk 660041, Russian Federation

Доп.точки доступа:
Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Popkov, S. I.; Попков, Сергей Иванович; Semenov, S. V.; Семенов, Сергей Васильевич; Balaev, D. A.; Балаев, Дмитрий Александрович; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Sablina, K. A.; Саблина, Клара Александровна; Sapronova, N. V.; Volkov, N. V.; Волков, Никита Валентинович
}
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