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Visible magnetic circular dichroism spectroscopy of the Pr0.8Sr0.2MnO3 and Pr0.6Sr0.4MnO3 thin films / I. S. Edelman [et al.] // AIP Adv. - 2014. - Vol. 4, Is. 5. - Ст. 057125, DOI 10.1063/1.4879818. - Cited References: 30. - The work was supported partly by the Russian Foundation for Basic Researches, grant No’s 14-02-01211, 12-02-00717-a and Grant of the Russian President No Sh-2886.2014.2 . - ISSN 2158-3226

РУБ Nanoscience & Nanotechnology + Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
MANGANITES
   LA1-XSRXMNO3
   PEROVSKITES
   SPECTRA
Аннотация: Visiblemagnetic circular dichroism (MCD) in Pr1-xSrxMnO3 with x=0.2 and 0.4was investigated for the first time. Samples for the investigation – polycrystalline films with thickness from 20 to 150 nm were prepared with the dc magnetron sputtering. MCD spectra obtained in the energy interval 1–4 eV at temperatures 100–300 K consist of several maxima with different intensities: very strong one near 3.25–3.4 eV and a broad essentially weaker band near 2 eV. An additional maximum of opposite sign arises in the samples with x = 0.4MCD spectrum at 2.33 eV. Experimental spectra were decomposed to several Gaussian components, and their amplitudes temperature dependences were analyzed. In the case of x = 0.2, all four Gaussian components are characterized by the identical temperature dependence of their amplitudes. In the case of x = 0.4, maxima observed in different spectral intervals demonstrate different temperature dependences of their amplitudes. One more unexpected phenomenon is associated with the different MCD value change in different spectral intervals when coming from x = 0.2 to x = 0.4: high-energy maximum increases more than twice while low-energy maxima intensity stays at that, practically, unchanged.

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Держатели документа:
LV Kirensky Inst Phys SB RAS, Krasnoyarsk 660036, Russia
Natl Univ Sci & Technol MISiS, Moscow 119049, Russia

Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Greben'kova, Yu. E.; Гребенькова, Юлия Эрнестовна; Sokolov, A. E.; Соколов, Алексей Эдуардович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Chichkov, V. I.; Andreev, N. V.; Mukovskii, Y.
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Two-phase paramagnetic-ferromagnetic state of La0.7Pb0.3MnO3 single-crystal lanthanum manganite / N. V. Volkov [et al.] // Phys. Solid State. - 2002. - Vol. 44, Is. 7. - P. 1350-1354, DOI 10.1134/1.1494635. - Cited References: 17 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
COLOSSAL MAGNETORESISTANCE
   MAGNETIC-RESONANCE
   DOPED MANGANITES
   LA1-XCAXMNO3
   SEPARATION
   TRANSITION
   RELAXATION
   EPR
Аннотация: Two phases, paramagnetic and ferromagnetic, were shown by the magnetic resonance method to coexist below the temperature T-C in La0.7Pb0.3MnO3 single crystals exhibiting colossal magnetoresistance. The magnetic resonance spectra were studied in the frequency range 10-78 GHz. The specific features in the behavior of the spectral parameters were observed to be the strongest at the temperatures corresponding to the maximum magnetoresistance in the crystals. The concentration ratios of the paramagnetic and ferromagnetic phases in the samples were found to be sensitive to variations in temperature and external magnetic field. This behavior suggests realization of the electronic phase separation mechanism in the system under study. (C) 2002 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:
Volkov, N. V.; Волков, Никита Валентинович; Petrakovskii, G. A.; Петраковский, Герман Антонович; Vasil'ev, V. N.; Sablina, K. A.; Саблина, Клара Александровна
}
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Two-dimensional antiferromagnetic correlations in an La1.4Sr1.6(Mn0.9Co0.1)2O7 single crystal / A. A. Bykov [et al.] // J. Exp. Theor. Phys. - 2017. - Vol. 124, Is. 5. - P. 786-791, DOI 10.1134/S1063776117050120. - Cited References: 20 . - ISSN 1063-7761
Кл.слова (ненормированные):
Antiferromagnetism -- Cobalt -- Cobalt compounds -- Lanthanum compounds -- Magnetization -- Magnetostriction -- Antiferromagnetic correlations -- Bi-layer -- Ferromagnetic orderings -- Field dependence -- Lanthanum manganites -- Single-crystal neutron diffraction -- Single crystals
Аннотация: The temperature and field dependences of the magnetization, the electrical resistivity, and the magnetostriction of bilayer lanthanum manganite La1.4Sr1.6Mn2O7 single crystals and cobalt-doped La1.4Sr1.6(Mn0.9Cu0.1)2O7 are measured. The magnetostriction of the cobalt-doped compound increases as compared to the initial La1.4Sr1.6Mn2O7 compound, and the magnetization and the magnetoresistance of the former compound change substantially. Powder and single-crystal neutron diffraction patterns are used to detect ferromagnetic ordering in La1.4Sr1.6(Mn0.9Co0.1)2O7 at a temperature below TC ~ 45(2) K, and this ordering coexists with antiferromagnetic correlations, which develop at temperatures below TC ~ 80(5) K. © 2017, Pleiades Publishing, Inc.

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Публикация на русском языке Двумерные антиферромагнитные корреляции в монокристалле La1.4Sr1.6(Mn0.9Co0.1)2O7 [Текст] / А. А. Быков [и др.] // Журн. эксперим. и теор. физ. : Наука, 2017. - Т. 151 Вып. 5. - С. 924-929

Держатели документа:
Konstantinov St. Petersburg Nuclear Physics Institute, Russian Academy of Sciences, Gatchina, Leningrad oblast, Russian Federation
St. Petersburg State University, St. Petersburg, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Max Plank Institute for Chemical Physics of Solids, Dresden, Germany

Доп.точки доступа:
Bykov, A. A.; Zobkalo, I. A.; Dubrovskii, A. A.; Дубровский, Андрей Александрович; Smirnov, O. P.; Nikitin, S. E.; Terent'ev, K. Yu.; Терентьев, Константин Юрьевич; Gavrilov, S. V.; Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович
}
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Gavrichkov, V. A.
The role of orbital ordering in the formation of electron structure in undoped LaMnO3 manganites in the regime of strong electron correlations / V. A. Gavrichkov, S. G. Ovchinnikov, L. E. Yakimov // J. Exp. Theor. Phys. - 2006. - Vol. 102, Is. 6. - P. 972-985, DOI 10.1134/S1063776106060112. - Cited References: 25 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
COLOSSAL MAGNETORESISTIVE OXIDES
   DOUBLE EXCHANGE
   BAND
   MODEL
Кл.слова (ненормированные):
Computational methods -- Correlation methods -- Doping (additives) -- Electrons -- Ferromagnetic materials -- Lanthanum compounds -- Paramagnetic materials -- Intraatomic electron correlations -- Mott Hubbard correlation gap -- Orbital ordering -- Paramagnetic phases -- Electronic structure
Аннотация: The electron structure of undoped LaMnO3 and slightly doped La1-xSrxMnO3 manganites has been calculated within the framework of a generalized tight binding method with explicit allowance for strong intra-atomic electron correlations. According to the results of these calculations, the ground state in orbitally disordered undoped LaMnO3 ferromagnets would be metallic despite the Mott-Hubbard correlation gap in the spectrum of quasiparticles. Owing to the orbital ordering, the insulating state is stabilized in both antiferromagnetic and paramagnetic phases. In-gap states of a polaron nature with a spectral weight proportional to the dopant concentration have been found near the top of the valence band in La1-xSrxMnO3. As the doping level increases, a metal state appears in the ferromagnetic phase, which has a metallic character for one spin subband and an insulating character for the other subband (representing the so-called half-metallic state).

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Публикация на русском языке Гавричков, Владимир Александрович. Роль орбитального упорядочения в формировании электронной структуры недопированных манганитов LaMnO3 в режиме сильных электронных корреляций [Текст] / В. Г. Архипкин, С. А. Мысливец, И. В. Тимофеев // Журн. эксперим. и теор. физ. - 2006. - Т. 129 Вып. 6.- P.1103-1117

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian State Aerospace University, Krasnoyarsk, 660014, Russian Federation

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Yakimov, L. E.; Гавричков, Владимир Александрович
}
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The magnetostriction effect in the bilayered manganites single crystals / K. A. Shaikhutdinov [et al.] // VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016) : abstracts / ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk : KIP RAS SB, 2016. - Ст. O1.4. - P. 40. - References: 3 . - ISBN 978-5-904603-06-9
Кл.слова (ненормированные):
keywords:magnetostriction -- chemical pressure -- methamagnetic transition -- chemical substitution

Доп.точки доступа:
Shaikhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Terent'yev, K. Yu.; Терентьев, Константин Юрьевич; Petrov, M. I.; Петров, Михаил Иванович; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Pavlovskii, M. S.; Павловский, Максим Сергеевич; Lavrov, A. N.; Лавров, Александр Николаевич; Euro-Asian Symposium "Trends in MAGnetism"(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); "Trends in MAGnetism", Euro-Asian Symposium(6 ; 2016 ; Aug. ; 15-19 ; Krasnoyarsk); Институт физики им. Л.В. Киренского Сибирского отделения РАН

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The magnetic-field-driven effect of microwave detection in a manganite granular system / N. V. Volkov [et al.] // J. Phys. D. - 2008. - Vol. 41, Is. 1. - Ст. 15004, DOI 10.1088/0022-3727/41/1/015004. - Cited References: 24 . - ISSN 0022-3727

РУБ Physics, Applied
Рубрики:
IDENTICAL METALS
   TUNNEL-JUNCTIONS
   MAGNETORESISTANCE
   RECTIFICATION
   SPINTRONICS
   TEMPERATURE
   PEROVSKITES
Кл.слова (ненормированные):
Bias currents -- Curie temperature -- Electric power generation -- Granular materials -- Magnetic field effects -- Microwave irradiation -- Voltage measurement -- Direct current voltage -- Magnetic tunnel junctions -- Metal insulator metal junctions -- Nonmagnetic metals -- Manganites
Аннотация: We demonstrate the microwave detection effect in a granular La0.7Ca0.3MnO3 sample. Dc voltage generated by the sample in response to microwave irradiation below the Curie temperature is found to be dependent on the applied magnetic field. The magnetic field dependence of the dc voltage has a broad peak resembling an absorption line. The detection effect depends substantially on the magnetic history of the sample; however, identical measurement conditions provide reproducibility of the experimental results. The detected dc voltage increases linearly with microwave power and strongly depends on a bias current through the sample. According to the results of systematic measurements, there exist two contributions to a value of the detected output signal. The first is magneto-independent; it can be explained in the framework of a mechanism used traditionally for description of the rectification effect in metal-insulator-metal junctions with nonmagnetic metals. The other is magneto-dependent; it originates from the interplay between the spin-dependent current through magnetic tunnel junctions and spin dynamics of the grains, which form these junctions in the sample.

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

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Eremin, E. V.; Еремин, Евгений Владимирович; Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Tsikalov, V. S.; Petrov, M. I.; Петров, Михаил Иванович; Balaev, D. A.; Балаев, Дмитрий Александрович; Semenov, S. V.; Семенов, Сергей Васильевич
}
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Synthesis of the Orthorhombic Dy1−xHoxMnO3 Single Crystals and Study of Their Magnetic Properties / S. V. Semenov [et al.] // J. Supercond. Novel Magn. - 2019. - Vol. 32, Is. 10. - P. 3315–3320, DOI 10.1007/s10948-019-5090-8. - Cited References: 20. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project: “Research, synthesis and investigation of new oxide single crystals showing the interrelation of magnetic, magnetoelastic and magnetoelectric properties” (project № 18-42-243024). . - ISSN 1557-1939
Кл.слова (ненормированные):
Rare earth manganites -- Orthorhombic Dy1−xHoxMnO3 -- Crystal growth -- Magnetic anisotropy
Аннотация: In this report, we prepared for the first time the orthorhombic Dy1−xHoxMnO3 single crystals with x = 0, 0.1, 0.2, 0.3, and 0.4 using the flux technique. The post-growth processing and chemical and structural characterization of the synthesized samples were performed. Also, we examined the samples obtained by their magnetic properties and the magnetic anisotropy in wide ranges of temperatures and magnetic fields.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Semenov, S. V.; Семёнов, Сергей Васильевич; Kolkov, M. I.; Колков, Максим Игоревич; Terent'ev, K. Yu.; Терентьев, Константин Юрьевич; Pavlovskiy, N. S.; Павловский, Николай Сергеевич; Pavlovskiy, M. S.; Павловский, Максим Сергеевич; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Shabanov, A. V.; Шабанов, Александр Васильевич; Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Balaev, D. A.; Балаев, Дмитрий Александрович
}
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Synthesis and structural, magnetic, and thermal properties of the titanium-doped Pb3Mn7O15 compound / S. N. Sofronova, E. V. Eremin, M. S. Molokeev [et al.] // Phys. Solid State. - 2021. - Vol. 63, Is. 4. - P. 654-659, DOI 10.1134/S1063783421040223. - Cited References: 10. - This study was supported by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk krai, and the Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, project no. 18-42-240007 . - ISSN 1063-7834. - ISSN 1090-6460

РУБ Physics, Condensed Matter

Кл.слова (ненормированные):
manganites -- magnetic phase transition -- indirect exchange coupling
Аннотация: The Pb3Mn7O15 crystals doped with titanium ions have been synthesized. The study of the structural properties has shown that titanium ions occupy positions in the interplane columns, which weakens the exchange coupling between the planes. Two anomalies in the temperature dependences of magnetization and heat capacity at 62 and 35 K have been found. It has been supposed that, at 62 K, the long-range magnetic order arises and, at 35 K, a spin-reorientation transition, as in the Pb3Mn7O15 compound, occurs.

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Публикация на русском языке Синтез, структурные, магнитные и теплофизические свойства Pb3Mn7O15, допированного ионами титана [Текст] / С. Н. Софронова, Е. В. Еремин, М. С. Молокеев [и др.] // Физ. тверд. тела. - 2021. - Т. 63 Вып. 4. - С. 545-549

Держатели документа:
Russian Acad Sci, Krasnoyarsk Sci Ctr, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Sofronova, S. N.; Софронова, Светлана Николаевна; Eremin, E. V.; Еремин, Евгений Владимирович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Mikhashenok, N. V.; Михашенок, Наталья Владимировна; Kartashev, A. V.; Карташев, Андрей Васильевич; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of the Krasnoyarsk krai; Krasnoyarsk Territorial Foundation for Support of Scientific and RD Activities [18-42-240007]
}
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    Structural, electrical and magnetic study of manganites Pr0.6Sr0.4MnO3 thin films / D. S. Neznakhin [et al.] // J. Phys. Conf. Ser. - 2016. - Vol. 690, Is. 1, DOI 10.1088/1742-6596/690/1/012002. - Cited References: 20. - The work was supported partly by RFBR, grant №14-02-01211, Grant of President of Russian Federation №NSh-2886.2014.2, and by The Ministry of Education and Science of the Russian Federation, project №2582. . - ISSN 1742-6588
   Перевод заглавия: Структурные, электрические и магнитные исследования тонких пленок манганита Pr0.6Sr0.4MnO3
Кл.слова (ненормированные):
Magnetic materials -- Magnetization -- Manganese oxide -- Nanoelectronics -- Nanostructures -- Oxide films -- Field dependence -- Magnetization temperature curves -- Polycrystalline phase -- Polycrystalline pr -- Resistivity dependence -- Shape characteristics -- Structural parameter -- Zero-field cooling -- Thin films
Аннотация: Thin polycrystalline Pr0.6Sr0.4MnO3 films were grown on the Y stabilized zirconium oxide substrates by magnetron sputtering using RF power and off-axis sputtering scheme with double cathodes. Only one polycrystalline phase with structural parameters consistent with that for the corresponding bulk sample was revealed in the films. Electric resistivity dependence on temperature demonstrates the shape characteristic for the substances with the Mott transition. The difference between magnetization temperature curves measured in the zero field cooling and field cooling modes was revealed. Magnetization field dependences were presented by the hysteresis loops changing their form with temperature. © Published under licence by IOP Publishing Ltd.

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Доп.точки доступа:
Neznakhin, D. S.; Samoshkina, Yu. E.; Самошкина, Юлия Эрнестовна; Molokeev, M. S.; Молокеев, Максим Сергеевич; Semenov, S. V.; Семёнов, Сергей Васильевич; Russian Youth Conference on Physics of Semiconductors and Nanostructures, Opto- and Nanoelectronics(St. Petersburg)(17 ; 23 - 27 Nov. 2015)
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10.

Strain-induced charge ordering in Pr-Sr manganites (X ≤ 0.4) / Yu. E. Samoshkina, M. V. Rauckii, D. S. Neznakhin [et al.] // VIII Euro-Asian symposium "Trends in magnetism" (EASTMAG-2022) : Book of abstracts / program com. S. G. Ovchinnikov [et al.]. - 2022. - Vol. 2, Sect. H : Magnetism of strongly correlated electron systems. - Ст. H.P17. - P. 107. - Cited References: 7 . - ISBN 978-5-94469-051-7

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Ural Federal University, Yekaterinburg, Russia
National University of Science and Technology (NUST “MISIS”), Moscow, Russia
Krasnoyarsk Rail Transport Institute, Irkutsk State Transport University, Krasnoyarsk, Russia

Доп.точки доступа:
Samoshkina, Yu. E.; Самошкина, Юлия Эрнестовна; Rauckii, M.V.; Рауцкий, Михаил Владимирович; Neznakhin, D. S.; Stepanova, E. A.; Andreev, N. V.; Андреев, Н. В.; Chichkov, V. I.; Чичков, В.И.; Chernichenko, A. V.; Черниченко, Ангелина Виталиевна; Российская академия наук; Физико-технический институт им. Е.К. Завойского ФИЦ Казанского научного центра РАН; Казанский (Приволжский) федеральный университет; Euro-Asian Symposium "Trends in MAGnetism"(8 ; 2022 ; Aug. ; 22-26 ; Kazan); "Trends in MAGnetism", Euro-Asian Symposium(8 ; 2022 ; Aug. ; 22-26 ; Kazan)
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