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Magnetic resonance spectrum of a two-phase state in single crystals of La0.7Pb0.3MnO3 lanthanum manganite / G. A. Petrakovskii [et al.] // JETP Letters. - 2000. - Vol. 71, Is. 4. - P. 144-147, DOI 10.1134/1.568300. - Cited References: 10 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
FERROMAGNETIC-RESONANCE
LA1-XCAXMNO3
SEPARATION
Аннотация: Two absorption lines are observed over a wide temperature range below T-c in the magnetic resonance spectrum of an La0.7Pb0.3MnO3 single crystal. These lines correspond to two magnetic phases in the sample. The frequency-field dependence of spectra obtained in the range of microwave radiation frequencies 10-77 GHz allows these phases to be interpreted as ferromagnetic and paramagnetic phases. The phase volume ratio depends on the temperature and the magnitude of the external magnetic field. Features in the temperature behavior of parameters of the magnetic absorption line are observed in the region of the highest magnetic resistance of the sample. The results are interpreted within the mechanism of electronic phase separation. (C) 2000 MAIK "Nauka/Interperiodica".

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

Доп.точки доступа:
Petrakovskii, G. A.; Петраковский, Герман Антонович; Volkov, N. V.; Волков, Никита Валентинович; Vasil'ev, V. N.; Sablina, K. A.; Саблина, Клара Александровна
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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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Features of the magnetic properties of La0.7Sr0.3MnO3 manganite films obtained by an extraction-pyrolysis method / G. S. Patrin [et al.] // Tech. Phys. Lett. - 2007. - Vol. 33, Is. 4. - P. 330-332, DOI 10.1134/S1063785007040177. - Cited References: 12 . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
PHASE-SEPARATION
MAGNETORESISTANCE
Аннотация: We have experimentally studied the magnetic properties of manganite films obtained for first time using an extraction-pyrolysis technique. It is established that the characteristics of samples significantly depend on the conditions of final annealing. The annealing at temperatures T-a 970 K is accompanied by strong thermomagmetic effects. and the resulting films possess properties similar to those of spin glasses. When the annealig temperature is increased to T-a = 1020 K, the films exhibit magnetic properties typical of ferromagnetic systems.

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Держатели документа:
Russian Acad Sci, Siberian Div, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
Krasnoyarsk State Polytech Univ, Krasnoyarsk 660062, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Patrin, G. S.; Патрин, Геннадий Семёнович; Polyakova, K. P.; Полякова, Клавдия Павловна; Patrusheva, T. N.; Патрушева, Тамара Николаевна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич
}
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Synthesis and Magnetic Properties of Manganite Pr0.7Ca0.3MnO3 Films / Patrin G.S., Polyakova K.P., Patrusheva T.N., Velikanov D.A., N.V. Volkov, D.A. Balaev, K.G. Patrin, A.A. Klabukov [и др.] // Moscow Int. Symp. on Magnet. (MISM-2008) : June 20-25, 2008, Moscow : book of abstract. - 2008. - Ст. 24PO-7-51. - p. 666-667. - Библиогр.: 3

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Доп.точки доступа:
Patrin, G. S.; Патрин, Геннадий Семёнович; Polyakova, K. P.; Полякова, Клавдия Павловна; Patrusheva, T. N.; Патрушева, Тамара Николаевна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Volkov, N. V.; Волков, Никита Валентинович; Balaev, D. A.; Балаев, Дмитрий Александрович; Patrin, K. G.; Патрин, Константин Геннадьевич; Klabukov, A.A.; Клабуков, Андрей Александрович; Moscow International Symposium on Magnetism(4 ; 2008 ; Jun. ; Moscow); Московский государственный университет им. М.В. Ломоносова; Российский фонд фундаментальных исследований
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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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Optically driven conductivity and magnetoresistance in a manganite-based tunnel structure / N. V. Volkov [et al.] // J. Phys. D. - 2009. - Vol. 42, Is. 20. - Ст. 205009, DOI 10.1088/0022-3727/42/20/205009. - Cited References: 13. - This study was supported by the Russian Foundation for Basic Research (Projects Nos 08-02-00259-a and 08-02-00397-a) and the Division of Physical Sciences of the RAS, Programme 'Spin-dependent Effects in Solids and Spintronics' (Project No 2.4.2 of the Siberian Branch of the RAS). . - ISSN 0022-3727

РУБ Physics, Applied
Рубрики:
JUNCTIONS
Кл.слова (ненормированные):
Conducting layers -- Current-in-plane geometry -- Dielectric layer -- Electron hole pairs -- Interband absorption -- Magnetic tunnel junction -- Magnetic tunnels -- Multilayer structures -- Optical radiations -- Photoinduced change -- Potential barriers -- Radiation power density -- Threshold characters -- Tunnel structures -- Electric resistance -- Lanthanum -- Light -- Magnetic field effects -- Magnetoelectronics -- Magnetoresistance -- Manganese compounds -- Oxide minerals -- Photovoltaic effects -- Semiconductor junctions -- Transport properties -- Vehicular tunnels -- Wind tunnels -- Tunnel junctions
Аннотация: In the multilayer structure, La(0.7)Sr(0.3)MnO(3)/depleted manganite layer/MnSi, the photovoltaic effect has been discovered. The depleted manganite layer in the structure is dielectric and serves as a potential barrier between the ferromagnetic conducting La(0.7)Sr(0.3)MnO(3) and MnSi layers by the formation of a magnetic tunnel junction. The photoinduced changes in the transport properties of the magnetic tunnel structure have been observed in the current-in-plane geometry. The changes are reversible and saturate at radiation power densities over 30 mW cm(-2). The photovoltaic effect has a threshold character: it reveals only at h nu > 1.17 eV. Most likely, the effect of optical radiation is related to the formation of electron-hole pairs due to interband absorption of light in the dielectric layer. A photocurrent through the tunnel junctions separating the conducting layers causes a redistribution of the current channels between the conducting layers, which influences the conductivity and the magnetoresistance of the structure.

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Держатели документа:
[Volkov, N. V.
Kim, P. D.
Eremin, E. V.
Patrin, G. S.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Volkov, N. V.
Patrin, G. S.] Siberian Fed Univ, Inst Engn Phys, Krasnoyarsk 660041, Russia
[Lee, C. G.] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Chang Won 641773, Gyeongnam, South Korea
[Eremin, E. V.] Siberian State Aerosp Univ, Inst Space Technol, Krasnoyarsk 660014, Russia
ИФ СО РАН
Kirensky Institute of Physics, Russian Academy of Science, Siberian Branch, Krasnoyarsk 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk 660041, Russian Federation
Changwon National University, School of Nano and Advanced Materials Engineering, Gyeongnam 641-773, Changwon, South Korea
Institute of Space Technology, Siberian State Aerospace University, Krasnoyarsk 660014, Russian Federation

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Lee, C. G.; Kim, P. D.; Ким, Пётр Дементьевич; Eremin, E. V.; Еремин, Евгений Владимирович; Patrin, G. S.; Патрин, Геннадий Семёнович; Russian Foundation for Basic Research [08-02-00259-a, 08-02-00397-a]; Division of Physical Sciences of the RAS; [2.4.2]
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Current-driven channel switching and colossal positive magnetoresistance in the manganite-based structure / N. V. Volkov [et al.] // J. Phys. D. - 2009. - Vol. 42, Is. 6. - Ст. 65005, DOI 10.1088/0022-3727/42/6/065005. - Cited References: 20. - This study was supported by the RFBR, Projects No 08-02-00259-a and 08-02-00397-a, the KRSF-RFBR 'Enisey-2007', Project No 07-02-96801-a and the Division of Physical Sciences of RAS, Program 'Spin-dependent Effects in Solids and Spintronics' (Project No 2.4.2 of SB RAS). . - ISSN 0022-3727

РУБ Physics, Applied

Кл.слова (ненормированные):
Colossal magnetoresistance -- Electric resistance -- Electronic structure -- Magnetic field effects -- Magnetoelectronics -- Manganese -- Manganites -- Oxide minerals -- Schottky barrier diodes -- Semiconductor junctions -- Silicides -- Tunnel junctions -- Tunnels -- Bottom layers -- Channel switching -- Conducting channels -- Conducting layers -- Current-driven -- Current-in-plane geometries -- Depletion layers -- Ferromagnetic state -- Layered structures -- Low-resistance contacts -- Magnetic tunnel junctions -- Magneto-transport properties -- Manganese silicides -- Manganite films -- New mechanisms -- Positive magnetoresistances -- Positive MR -- Potential barriers -- Spin-polarized -- Tunnel structures -- Voltage-current characteristics -- Current voltage characteristics
Аннотация: The transport and magnetotransport properties of a newly fabricated tunnel structure manganite/depletion layer/manganese silicide have been studied in the current-in-plane (CIP) geometry. A manganite depletion layer in the structure forms a potential barrier sandwiched between two conducting layers, one of manganite and the other of manganese silicide. The voltage-current characteristics of the structure are nonlinear due to switching conducting channels from an upper manganite film to a bottom, more conductive MnSi layer with an increase in the current applied to the structure. Bias current assists tunnelling of a carrier across the depletion layer; thus, a low-resistance contact between the current-carrying electrodes and the bottom layer is established. Below 30 K, both conducting layers are in the ferromagnetic state (magnetic tunnel junction), which allows control of the resistance of the tunnel junction and, consequently, switching of the conducting channels by the magnetic field. This provides a fundamentally new mechanism of magnetoresistance (MR) implementation in the magnetic layered structure with CIP geometry. MR of the structure under study depends on the bias current and can reach values greater than 400% in a magnetic field lower than 1 kOe. A positive MR value is related to peculiarities of the spin-polarized electronic structures of manganites and manganese silicides.

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Держатели документа:
[Volkov, N. V.
Eremin, E. V.
Tsikalov, V. S.
Patrin, G. S.
Kim, P. D.] SB RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Volkov, N. V.
Patrin, G. S.] Siberian Fed Univ, Dept Phys, Krasnoyarsk 660041, Russia
[Seong-Cho, Yu
Kim, Dong-Hyun] Chungbuk Natl Univ, Dept Phys, Cheongju 361763, South Korea
[Chau, Nguyen] Natl Univ Hanoi, Ctr Mat Sci, Hanoi, Vietnam
ИФ СО РАН
Kirensky Institute of Physics, SB RAS, Krasnoyarsk 660036, Russian Federation
Department of Physics, Siberian Federal University, Krasnoyarsk 660041, Russian Federation
Department of Physics, Chungbuk National University, Cheongju 361-763, South Korea
Center for Materials Science, National University of Hanoi, 334 Nguyen Trai, Hanoi, Viet Nam

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Eremin, E. V.; Еремин, Евгений Владимирович; Tsikalov, V. S.; Patrin, G. S.; Патрин, Геннадий Семёнович; Kim, P. D.; Ким, Пётр Дементьевич; Seong-Cho, Y.; Kim, D. H.; Chau, N.; RFBR [08-02-00259-a, 08-02-00397-a]; KRSF-RFBR [07-02-96801-a]; Division of Physical Sciences of RAS; Program 'Spin-dependent Effects in Solids and Spintronics' [2.4.2]
}
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Current channel switching in the manganite-based multilayer structure / N. Volkov, E. Eremin [et al.] // 18th International Conference on Magnetism (ICM-2009). - 2009. - Ст. Mo-A-5.1-03

Доп.точки доступа:
Volkov, N.; Eremin, E.; Patrin, G.; Kim, P.; Yu, Seong-Cho; Dong-Hyun, Kim; Nguyen, Chau; International Conference on Magnetism(18 ; 2009 ; July 26-31 ; Karlsruhe, Germany)
}
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Nonlinear charge transport in the manganite/semiconductor structure: effects of magnetic field and optical radiation / N. V. Volkov, E. V. Eremin [et al.] // Восьмой Международный уральский семинар "Радиационная физика металлов и сплавов" : тезисы докладов : 23 февр. - 1 марта 2009, Снежинск, Росиия / сост. М. Ю. Яхонтова. - 2009. - P. 63

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Доп.точки доступа:
Яхонтова, М.Ю. \сост.\; Volkov, N. V.; Волков, Никита Валентинович; Eremin, E. V.; Еремин, Евгений Владимирович; Tsikalov, V. S.; Цикалов, Виталий Сергеевич; Kim, P. D.; Ким, Пётр Дементьевич; Seong-Cho, Yu; Dong-Hyun, Kim; N., Chau; "Радиационная физика металлов и сплавов", Международный уральский семинар (8 ; 2009 ; февр.-март ; Снежинск, Россия)
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10.

Magnetoresistance hysteresis in a polycrystalline (La0.5Eu0.5)0.7Pb0.3MnO3 manganite at low temperatures / S. V. Semenov, K. A. Shaykhutdinov [et al.] // 18th International Conference on Magnetism (ICM-2009). - 2009. - Ст. Mo-A-5.1-03

Доп.точки доступа:
Semenov, S.V.; Shaykhutdinov, K.A.; Popkov, S.I.; Balaev, A.D.; Dubrovskiy, A.A.; Sablina, K.A.; Volkov, N.V.; International Conference on Magnetism(18 ; 2009 ; July 26-31 ; Karlsruhe, Germany)
}
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11.

Synthesis and magnetic property features of La-Sr-Mn-O manganite polycrystaline / K. P. Polyakova [et al.] // Workshop "Trends in Nanomechanics and Nanoengineering" : book of abstracts / предс. сем. K. S. Aleksandrov ; зам. предс. сем.: G. S. Patrin, S. G. Ovchinnikov ; чл. лок. ком.: N. N. Kosyrev, A. S. Fedorov [et al]. - 2009. - P. 32

Материалы семинара

Доп.точки доступа:
Aleksandrov, K. S. \предс. сем.\; Александров, Кирилл Сергеевич; Patrin, G. S. \зам. предс. сем.\; Патрин, Геннадий Семёнович; Ovchinnikov, S. G. \зам. предс. сем.\; Овчинников, Сергей Геннадьевич; Kosyrev, N. N. \чл. лок. ком.\; Косырев, Николай Николаевич; Fedorov, A. S. \чл. лок. ком.\; Федоров, Александр Семенович; Polyakova, K. P.; Полякова, Клавдия Павловна; Patrin, G. S.; Patrusheva, T. N.; Патрушева, Тамара Николаевна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Volkov, N. V.; Волков, Никита Валентинович; Patrin, K. G.; Klabukov, A.A.; "Trends in Nanomechanics and Nanoengineering", workshop(2009 ; Aug. ; 24-28 ; Krasnoyarsk); Сибирский федеральный университет; Институт физики им. Л.В. Киренского Сибирского отделения РАН
}
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12.

Synthesis and Magnetic Properties of Pr0.7Ca0.3MnO3 Manganite Films [Text] / G. S. Patrin [et al.] // Magnetism and Magnetic Materials. - STAFA-ZURICH : Trans Tech Publications LTD, 2009. - Vol. 152-153. - P100-103. - (Solid State Phenomena Series). - Cited Reference Count: 11 . - ISBN 1012-0394
Кл.слова (ненормированные):
magnetic properties -- thin films -- synthesis -- manganite
Аннотация: Data on the magnetic properties of polycrystalline Pr(0.7)Ca(0.3)MnO(3) manganite films obtained for the first time by extraction pyrolysis are presented. The effect of synthesis temperature on the magnetic properties of the manganite films is shown.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Polyakova, K.P.; Patrusheva, T.N.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Volkov, N. V.; Волков, Никита Валентинович; Balaev, D. A.; Балаев, Дмитрий Александрович; Patrin, G. S.; Патрин, Геннадий Семёнович; Klabukov, A.A.; Moscow International Symposium on Magnetism(4 ; 2008 ; Jun. ; Moscow)
}
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13.

    Гавричков, Владимир Александрович.
    Электронная структура манганитных материалов / В. А. Гавричков, С. С. Овчинников, Л. Е. Якимов // Решетневские чтения : [Электронный ресурс] : материалы XIV Междунар. науч. конф., посвяще. памяти ген. конструктора ракет.-космич. систем акад. М. Ф. Решетнева : в 2-х ч. / Сиб. гос. аэрокосмич. ун-т.; под общ. ред. Ю.Ю. Логинова. - Красноярск, 2010. - Ч. 2. - С. 576-577. - Библиогр.: 1
   Перевод заглавия: Electronic structure of manganite materials
Аннотация: Для расчета дисперсионных зависимостей La1-xSrxMnO3 применен обобщенный метод сильной связи. Произ ведена точная диагонализация кластера MnO6 при различных заполнениях. В базисе собственных состояний кластера записан гамильтониан межкластерных взаимодействий. Численно решено дисперсионное уравнение. Вычисленные дисперсионные соотношения воспроизводят наблюдаемую в фотоэмиссионых исследованиях данных оксидов дисперсию.

Материалы конференции,
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Держатели документа:
Институт физики им. Л.В. Киренского СО РАН

Доп.точки доступа:
Логинов, Ю. Ю. \ред.\; Овчинников, Сергей Геннадьевич; Якимов, Л. Е.; Gavrichkov, V. A.; "Решетневские чтения", международная научная конференция(14 ; 2010 ; нояб. ; 10-12 ; Красноярск); Сибирский государственный университет науки и технологий им. акад. М. Ф. Решетнева; Информационные спутниковые системы им. академика М. Ф. Решетнева, АО; Красноярский машиностроительный завод, ОАО
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14.

Current channel switching in the manganite-based multilayer structure / N. V. Volkov [et al.] // J. Phys. Conf. Ser. - 2010. - Vol. 200, Is. SECTION 5, DOI 10.1088/1742-6596/200/5/052031 . - ISSN 1742-6588
Кл.слова (ненормированные):
Channel switching -- Current in planes -- Magnetic tunnel junction -- Magnetoresistive -- Manganese silicide -- Multilayer structures -- Optical radiations -- Potential barriers -- Lanthanum -- Magnetic fields -- Manganese -- Silicides -- Transport properties -- Tunnel junctions -- Manganese oxide
Аннотация: The transport properties of the structure La0.7Sr 0.3MnO3/depleted manganite layer/MnSi have been studied. The depleted manganite layer serves as a potential barrier between the ferromagnetic conducting La0.7Sr0.3MnO3 and MnSi layers by forming a magnetic tunnel junction. The study in the CIP (current-in-plane) geometry has revealed the effect of current channel switching between the manganite layer and the manganese silicide layer with higher conductivity. The effect is controlled by bias current, magnetic field, and optical radiation. Such switching is responsible for the features of the transport properties and the magnetoresistive and photovoltaic effects in the structure. © 2010 IOP Publishing Ltd.

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Держатели документа:
Kirensky Institute of Physics SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Institute of Engineering Physics and Radio Electronics, Krasnoyarsk, 660041, Russian Federation
Chungbuk National University, Department of Physics, Cheongju, 361-763, South Korea

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Eremin, E. V.; Еремин, Евгений Владимирович; Patrin, G. S.; Патрин, Геннадий Семёнович; Kim, P. D.; Ким, Пётр Дементьевич; Seong-Cho, Y.; Kim, D. -H.; Chau, N.
}
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15.

Magnetoresistance of substituted lanthanum manganites La0.7Ca0.3MnO3 upon nonequilibrium overheating of carriers / K. A. Shaykhutdinov [et al.] // J. Appl. Phys. - 2011. - Vol. 109, Is. 8. - Ст. 83711, DOI 10.1063/1.3573666. - Cited References: 15. - This study was partially supported by the Russian Foundation for Basic Research, project no. 08-02-00259a, and the Lavrent'ev's Competition of Young Scientists of the Siberian Branch of the RAS, project no. 12. . - ISSN 0021-8979

РУБ Physics, Applied

Кл.слова (ненормированные):
Field dependence -- Lanthanum manganites -- Low thermal conductivity -- Manganite materials -- Negative differential resistivity -- Non equilibrium -- Non-Linearity -- Nonequilibrium heating -- Polycrystalline -- Positive magnetoresistance -- Transport currents -- Electric resistance -- Electron gas -- Heating -- Lanthanum -- Lanthanum alloys -- Magnetic fields -- Magnetoelectronics -- Magnetoresistance -- Manganese oxide -- Manganites -- Thermal conductivity -- Current voltage characteristics
Аннотация: Current-voltage characteristics of the polycrystalline substituted lanthanum manganite La0.7Ca0.3MnO3 were experimentally studied at T - 77.4 K in magnetic fields up to 13 kOe. In these characteristics, a portion of negative differential resistivity was observed above a certain threshold value of critical current density j caused, in our opinion, by nonequilibrium heating of the electron gas due to low thermal conductivity of the manganite material. Because of the nonlinearity of the current-voltage characteristics, the field dependences of resistivity rho( H) appear extremely sensitive to the value of a transport current. In this case, the rho( H) dependences reveal both ordinary negative and positive magnetoresistance. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3573666]

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Держатели документа:
[Shaykhutdinov, K. A.
Semenov, S. V.
Popkov, S. I.
Balaev, D. A.
Bykov, A. A.
Dubrovskiy, A. A.
Petrov, M. I.
Volkov, N. V.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Shaykhutdinov, K. A.
Popkov, S. I.
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; Semenov, S. V.; Семенов, Сергей Васильевич; Popkov, S. I.; Попков, Сергей Иванович; Balaev, D. A.; Балаев, Дмитрий Александрович; Bykov, A. A.; Быков, Алексей Анатольевич; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Petrov, M. I.; Петров, Михаил Иванович; Volkov, N. V.; Волков, Никита Валентинович
}
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16.

Response of a manganite-based magnetic tunnel structure to microwave radiation / N. V. Volkov [et al.] // J. Phys. D. - 2012. - Vol. 45, Is. 25. - Ст. 255301, DOI 10.1088/0022-3727/45/25/255301. - Cited References: 20. - This study was supported by the Russian Foundation for Basic Research, project no 11-02-00367-a; the Presidium of the Russian Academy of Sciences, program Fundamentals for Basic Research of Nanotechnology and Nanomaterials, project no 21.1; the Division of Physical Sciences of the Russian Academy of Sciences, program Spin-Dependent Effects in Solids and Spintronics, project no 2.4.4.1; the Siberian Branch of the Russian Academy of Sciences, integration projects nos 5 and 134; and the Federal target program Scientific and Pedagogical Personnel of Innovative Russia (State contract no NK-556P_15). . - ISSN 0022-3727

РУБ Physics, Applied
Рубрики:
IDENTICAL METALS
   JUNCTIONS
   RECTIFICATION
   SPINTRONICS
   MECHANISM
Аннотация: We demonstrate that a magnetic tunnel structure irradiated by microwaves can generate a typical voltage signal due to the rectification effect. We performed measurements in current-in-plane geometry when a current flows parallel to the interfaces in the structure. The value of the microwave-induced voltage strongly depends on the bias current and can be driven by a magnetic field. The rectification effect is discussed both in classical terms of nonlinearity of the current-voltage characteristics and within the mechanism involving the interplay between the spin-polarized current and the magnetization dynamics in the magnetic tunnel structure.

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Держатели документа:
[Volkov, N. V.
Rautskiy, M. V.
Eremin, E. V.
Patrin, G. S.
Kim, P. D.] Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
[Volkov, N. V.
Eremin, E. V.] Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
[Patrin, G. S.] Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia
[Lee, C. G.] Changwon Natl Univ, Sch Nano & Adv Mat Engn, Chang Won 641773, Gyeongnam, South Korea

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Rautskiy, M. V.; Рауцкий, Михаил Владимирович; Eremin, E. V.; Еремин, Евгений Владимирович; Patrin, G. S.; Патрин, Геннадий Семёнович; Kim, P. D.; Ким, Петр Дементьевич; Lee, C. G.
}
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17.

Response of a manganite-based magnetic tunnel structure to microwave radiation / N. V. Volkov [et al.] // Diffusion and Defect Data Pt.B: Solid State Phenomena. - 2012. - Vol. 190. - P. 125-128, DOI 10.4028/www.scientific.net/SSP.190.125 . - ISBN 978. - ISBN 9783037854365
Кл.слова (ненормированные):
Magnetic tunnel structure -- Microwave detection effect -- Spintronics -- Current flowing -- Current-in-plane geometry -- Magnetic tunnels -- Magnetization dynamics -- Microwave detection -- Non-Linearity -- Rectification effects -- Spin-polarized currents -- Voltage signals -- Magnetic materials -- Magnetoelectronics -- Manganese oxide -- Microwaves -- Magnetism
Аннотация: We demonstrate that a magnetic tunnel structure irradiated by microwaves can generate a significant voltage signal due to the rectification effect. The measurements were carried out using current-in-plane geometry with a current flowing parallel to the interfaces in the structure. A value of the microwave-induced voltage strongly depends on a bias current and can be driven by a magnetic field. The rectification effect is discussed both in "Classical" terms of nonlinearity of the current-voltage characteristic and using a mechanism that involves the interplay between the spinpolarized current and magnetization dynamics in the magnetic tunnel structure. В© (2012) Trans Tech Publications.

Scopus

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Rautskii, M. V.; Рауцкий, Михаил Владимирович; Eremin, E. V.; Еремин, Евгений Владимирович; Patrin, G. S.; Патрин, Геннадий Семёнович; Kim, P. D.; Ким, Петр Дементьевич; Lee, C. G.; Moscow International Symposium on Magnetism(5 ; 2011 ; Aug. ; 21-25 ; Moscow)
}
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18.

Volkov, N. V.
Spintronics: manganite-based magnetic tunnel structures / N. V. Volkov // Phys. Usp. - 2012. - Vol. 55, Is. 3. - P. 250-269, DOI 10.3367/UFNe.0182.201203b.0263. - Cited References: 91. - This work was supported by the Russian Foundation for Basic Research (grant No. 11-02-00367-a); the program of the Presidium of the RAS, Fundamental Research on Nanotechnologies and Nanomaterials (grant No. 21.1); the program of the Department of Physical Sciences of the RAS "Spin Phenomena in Solid Nanostructures and Spintronics" (grant No. 2.4.4.1); integration projects of the Siberian Branch, RAS, Nos 5 and 134; and the Federal Special Purpose Program "Scientific and Pedagogical Personnel of Innovative Russia" (state contract No. NK-556P_15). . - ISSN 1063-7869

РУБ Physics, Multidisciplinary
Рубрики:
HIGH-FREQUENCY RECTIFICATION
   THIN INSULATING FILM
   COLOSSAL MAGNETORESISTANCE
   GIANT MAGNETORESISTANCE
   ELECTRONIC-STRUCTURE
   SANDWICH STRUCTURES
   SPIN POLARIZATION
   IDENTICAL METALS
   PHASE-SEPARATION
   ROOM-TEMPERATURE
Аннотация: A topical and highly promising aspect of the field of spintronics is the physics involved in the flow of a spin-polarized current through magnetic tunnel structures. This review focuses on manganite-based structures, which are appealing for their high Curie temperature, highly spin-polarized conduction electrons, high chemical stability, and well-developed fabrication technology. Particular emphasis is placed on some novel approaches to studying the tunnel structures, including the use of planar geometry and the application of combined external factors (microwave and optical radiation) to investigate spin-polarized transport.

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Публикация на русском языке

Доп.точки доступа:
Волков, Никита Валентинович
}
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19.

Bondarev, I. A.
Transport properties of the La0.75Ca0.25MnO3 manganite [Текст] / I. A. Bondarev, N. V. Volkov // RACIRI Summer School : Book of abstracts. - 2013. - P. 18

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Бондарев, Илья Александрович; RACIRI Summer School(17−25 August, 2013 ; Peterhof, Russia)
}
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20.

Magneto-optical spectroscopy of manganite thin film : Abstract / Yu. E. Greben'kova [et al.]. ; Taurida National V. I. Vernadsky University // Functional materials : Abstracts / ed. V. N. Berzhansky. - Simferopol, 2013. - P. 186 . - ISBN 978-966-491-465-6

Материалы конференции

Доп.точки доступа:
Berzhansky, V. N. \ed.\; Бержанский, Владимир Наумович; Greben'kova, Yu.E.; Гребенькова, Юлия Эрнестовна; Sokolov, A. E.; Соколов, Алексей Эдуардович; Edelman, I. S.; Эдельман, Ирина Самсоновна; Andreev, N. V.; Андреев Н.В.; Chichkov, V. I.; Чичков В.И.; Taurida National V. I. Vernadsky University; "Functional Materials", International Conference(2013 ; 29 Sept.-5 Oct. ; Partenit, Yalta; Ukraine Crimea)
}
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