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Novikov, P. V.
Characteristics of the heating dynamics of a graphite conductor taking into account the skin effect / P. V. Novikov, G. N. Churilov // Tech. Phys. - 2000. - Vol. 45, Is. 9. - P. 1214-1218, DOI 10.1134/1.1318113. - Cited References: 13 . - ISSN 1063-7842

РУБ Physics, Applied
Рубрики:
FULLERENES
C-60
SPECTRA
Аннотация: Calculations for a one-dimensional model of RF heating of a cylindrical graphite conductor have been carried out. The heating dynamics are analyzed in the general form. Conductor temperature profiles and the times for heating up to the graphite sublimation temperature as a function of current and frequency have been obtained. A model of conductor heating with partial return of the energy irradiated by the conductor surface has been considered. Frequency and current ranges have been determined to carry out this graphite sublimation method in a chamber with reflecting walls. The problem is associated with carbon vapor production and subsequent synthesis of fullerenes and other carbon structures. (C) 2000 MAIK "Nauka/ Interperiodica".

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Держатели документа:
Krasnoyarsk State Tech Univ, Krasnoyarsk 660074, Russia
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Churilov, G. N.; Чурилов, Григорий Николаевич
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    Zobov, V. E.
    Exponential Bound for the Heating Rate of Periodically Driven Spin Systems / V. E. Zobov, M. M. Kucherov // J. Exp. Theor. Phys. - 2019. - Vol. 128, Is. 4. - P. 641-649, DOI 10.1134/S1063776119030130. - Cited References: 42 . - ISSN 1063-7761. - ISSN 1090-6509
Рубрики:
AUTOCORRELATION FUNCTIONS
   HEISENBERG PARAMAGNET
   FLUCTUATION SPECTRUM
Аннотация: For the nuclear spin system of a solid in the presence of an inhomogeneous magnetic field, we have found a rigorous bound for the heating rate of the system under the action of a high-frequency magnetic field, which is applied, for example, to create effective Hamiltonians. We consider the autocorrelation function (ACF) of a spin rotating in a local field whose fluctuations are specified by a Gaussian random process. The correlation function of a random field is taken as the sum of a static inhomogeneous contribution and a time-dependent contribution expressed self-consistently via the spin ACF. The ACF singularities on the imaginary time axis whose coordinates determine the exponents of exponential asymptotics in the high-frequency domain are investigated. The dependences of the coordinates on field inhomogeneity for various approximations have been derived. The wing of the ACF spectrum in the cumulant approximation is shown to serve as a rigorous upper bound for the wing of the ACF spectrum and, consequently, for the heating rate of the system when subjected to variable magnetic fields. We have established that randomly distributed inhomogeneous magnetic fields increase the wings of the ACF spectra and, thus, speed up the system's heating.

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Публикация на русском языке Зобов, Владимир Евгеньевич. Экспоненциальная граница для скорости нагревания периодически управляемых спиновых систем [Текст] / В. Е. Зобов, М. М. Кучеров // Журн. эксперим. и теор. физ. - 2019. - Т. 155 Вып. 4. - С. 750-758

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Fed Res Ctr, Krasnoyarsk Sci Ctr,Siberian Branch, Akademgorodok 50, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Space & Informat Technol, Krasnoyarsk 660074, Russia.

Доп.точки доступа:
Kucherov, M. M.; Зобов, Владимир Евгеньевич
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Zobov, V. E.
Exponential bound on heating rate in periodically driven spin systems / V. E. Zobov, M. M. Kucherov // Proceedings of the International Conference "Micro- and Nanoelectronics – 2018". ICMNE – 2018 : book of abstracts : October 1-5, 18, Moscow – Zvenigorod, Russia. - 2018. - Ст. q3-03. - P. 150, DOI 10.29003/m209.ICMNE-2018. - Cited References: 3 . - ISBN 978-5-317-05917-0

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Доп.точки доступа:
Kucherov, M. M.; Зобов, Владимир Евгеньевич; "Micro- and Nano-Electronics", International Conference(2018 ; Oct. ; Zvenigorod); "Микро- и наноэлектроника", международная конференция(2018 ; окт. ; Звенигород)Квантовая информатика, симпозиум(2018 ; окт. ; Звенигород); Российская академия наук; Физико-технологический институт имени К.А. Валиева РАН
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Gorev, M. V.
Heat capacity study of PMN near fieldinduced phase transition / M. V. Gorev, V. S. Bondarev, K. S. Aleksandrov // Ferroelectrics. - 2007. - Vol. 360, Is. 1, Pt. 2. - P. 37-43, DOI 10.1080/00150190701515964. - Cited References: 11 . - ISSN 0015-0193
Кл.слова (ненормированные):
Field-induced phase transition -- Heat capacity -- PMN -- Field cooling -- Field model -- Field-induced phase transition -- Heat capacities -- Heat capacity measurements -- Single crystal wafers -- Temperature range -- Zero-field heating -- Electric fields -- Single crystals -- Specific heat -- Phase transitions
Аннотация: Heat capacity measurements were performed for a single crystal wafer of PMN in the temperature range of 170-250 K applying an electric field E = 3.0 kV/cm along the [111] direction. The heat capacity anomalies related to the phase transition at Tc = 210 K upon zero field heating after field cooling and at Tc = 223 K upon field cooling have been found. The results obtained are discussed together with the data of previous studies in the frame of the spherical random bondrandom field model.

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Доп.точки доступа:
Bondarev, V. S.; Бондарев, Виталий Сергеевич; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Горев, Михаил Васильевич; International Seminar on Ferroelactic Physics(5 ; 2006 ; Sept. ; 10-13 ; Voronezh)
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Heating of magnetic powders in the ferromagnetic resonance mode at a frequency of 8.9 GHz / S. V. Stolyar, O. A. Li, E. D. Nikolaeva [et al.] // Phys. Solid State. - 2023. - Vol. 65, Is. 6. - P. 963-970, DOI 10.21883/PSS.2023.06.56109.21H. - Cited References: 25 . - ISSN 1063-7834. - ISSN 1090-6460
Кл.слова (ненормированные):
ferromagnetic resonance -- superparamagnetic powders -- relaxation frequency -- frequency-field dependence -- heating of powders
Аннотация: Nickel ferrite nanoparticles 4 nm in size were synthesized by chemical deposition. Subsequent annealing at T=700°C for 5 h led to an increase in the particle size to 63 nm. The Mossbauer spectra and the frequency-field dependences of ferromagnetic resonance have been measured. It has been shown that freshly prepared powders are superparamagnetic at room temperature. The kinetic dependences of the heating of nanoparticles in the ferromagnetic resonance mode at a frequency of 8.9 GHz were measured. It was found that the maximum rate of temperature increase in this mode for a ferromagnetic powder is an order of magnitude greater than for the superparamagnetic state (1.2 and 0.13 K/s, respectively). The latter is determined by the saturation magnetization of the studied powders.

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Публикация на русском языке Нагрев магнитных порошков в режиме ферромагнитного резонанса на частоте 8.9 GHz [Текст] / С. В. Столяр, О. А. Ли, Е. Д. Николаева [и др.]. - 8 с. // Физ. твердого тела. - 2023. - Т. 65 Вып. 6. - С. 1006-1013

Держатели документа:
Krasnoyarsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russia
Siberian State University of Science and Technology, Krasnoyarsk, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB, Russian Academy of Sciences, Krasnoyarsk, Russia

Доп.точки доступа:
Stolyar, S. V.; Li, O. A.; Nikolaeva, E. D.; Boev, N. M.; Боев, Никита Михайлович; Vorotynov, A. M.; Воротынов, Александр Михайлович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Pyankov, V. F.; Knyazev, Yu. V.; Князев, Юрий Владимирович; Bayukov, O. A.; Баюков, Олег Артемьевич; Shokhrina, A. O.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Nanophysics and Nanoelectronics, International Symposium(27 ; 13-16 March 2023 ; Nizhny Novgorod, Russia)
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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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Mechanism of surface reinforcement of steels by nanocarbon materials using laser heating / G. S. Bocharov [et al.] // Phys. Metals Metallogr. - 2018. - Vol. 119, Is. 2. - P. 197-201, DOI 10.1134/S0031918X18010052. - Cited References:11. - This work was supported by the Russian Science Foundation, project no. 16-19-10027. . - ISSN 0031-918X. - ISSN 1555-6190

РУБ Metallurgy & Metallurgical Engineering

Кл.слова (ненормированные):
laser treatment -- nanocarbon materials -- technically pure iron -- microhardness -- microstructure -- wear resistance -- friction coefficient
Аннотация: The mechanism of the surface reinforcement and wear resistance of steel products are studied as a result of creating the strengthening layers with the nanocarbon using the laser heating. Laser surface treatment using soot remaining after fullerene extraction leads to a more than fivefold increase in the microhardness (up to 1086 HV) and a decrease in the friction coefficient by 20–30%. The conclusion that the reinforcement mechanism involves the formation of eutectic, cementite, martensite, the cellular substructure, and grain refinement is carried out based on metallographic studies of the strengthened layers of technically pure iron with a thickness of 20–70 μm.

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Публикация на русском языке Исследование механизма поверхностного упрочнения сталей наноуглеродными материалами с использованием лазерного нагрева [Текст] / Г. С. Бочаров [и др.] // Физ. металлов и металловед. - 2018. - Т. 119 № 2. - С. 211-216

Держатели документа:
Natl Res Univ Moscow Power Engn Inst, Ul Krasnokazarmennaya 14, Moscow 11125, Russia.
Moscow Automobile & Rd Construct Univ, Leningradskii Pr 64, Moscow 125319, Russia.
Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Academgorodok 50, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Bocharov, G. S.; Eletskii, A. V.; Zilova, O. S.; Terentyev, E. V.; Fedorovich, S. D.; Chudina, O. V.; Churilov, G. N.; Чурилов, Григорий Николаевич; Russian Science Foundation [16-19-10027]
}
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Non-linear current-voltage characteristics of (La0.5Eu0.5)(0.7)Pb0.3MnO3 single crystals: Possible manifestation of the internal heating of charge carriers / K. A. Shaykhutdinov [et al.] // Physica B. - 2010. - Vol. 405, Is. 24. - P. 4961-4965, DOI 10.1016/j.physb.2010.09.043. - Cited References: 19. - The authors are grateful to A.N. Lavrov for useful discussions on the results. This study was partially supported by the Russian Foundation for Basic Research, Project no. 08-02-00259a and the Lavrent'ev Young Scientists' Competition of the Siberian Branch of the Russian Academy of Sciences. Project no. 12. . - ISSN 0921-4526

РУБ Physics, Condensed Matter
Рубрики:
INSULATOR-METAL TRANSITION
PR0.7CA0.3MNO3
MANGANITES
Кл.слова (ненормированные):
Manganites -- Negative differential resistance -- CVC -- CVC -- Manganites -- Negative differential resistance -- Applied electric field -- Charge ordering -- Current switching -- CVC -- Dielectric regions -- Experimental data -- Internal heating -- Lanthanum manganites -- Metal-dielectric transition -- Negative differential resistances -- Non equilibrium -- Non-linear -- Sample heating -- Temperature evolution -- Transport currents -- Electric fields -- Electron gas -- Europium -- Heating -- Lanthanum -- Lead -- Manganites -- Negative resistance -- Phase separation -- Single crystals -- Thermal conductivity -- Manganese oxide
Аннотация: Temperature evolution of the current-voltage characteristics (CVCs) of a single-crystal lanthanum manganite (La0.5Eu0.5)(0.7)Pb0.3MnO3 is investigated in a wide (up to 1 A) range of instrumental currents. Effects of a transport current and an applied electric field on the resistance of the material are studied in view of possible implementation of the charge ordering break in dielectric regions occurring due to phase separation in manganites. A negative differential resistance portion observed in the CVCs suggests the presence of a current switching effect. Below the temperature of the metal-dielectric transition in (La0.5Eu0.5)(0.7)Pb0.3MnO3, the hysteresis is observed in the CVC. The detailed analysis of the internal sample heating on the basis of experimental data on thermal conductivity showed, however, that these CVC features can be explained within the concept of non-equilibrium heating of electron gas. (C) 2010 Elsevier B.V. All rights reserved.

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Держатели документа:
[Shaykhutdinov, K. A.
Popkov, S. I.
Balaev, D. A.
Semenov, S. V.
Bykov, A. A.
Dubrovskiy, A. A.
Sapronova, N. V.
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; Popkov, S. I.; Попков, Сергей Иванович; Balaev, D. A.; Балаев, Дмитрий Александрович; Semenov, S. V.; Семенов, Сергей Васильевич; Bykov, A. A.; Быков, Алексей Анатольевич; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Sapronova, N. V.; Volkov, N. V.; Волков, Никита Валентинович
}
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Photonic bound states in the continuum governed by heating / A. I. Krasnov, P. S. Pankin, G. A. Romanenko [et al.] // Phys. Rev. E. - 2024. - Vol. 109, Is. 5. - Ст. 054703, DOI 10.1103/PhysRevE.109.054703. - Cited References: 50. - This work was supported by the Russian Science Foundation under Grant No. 22-22-00687 . - ISSN 2470-0045. - ISSN 2470-0053
Аннотация: A photonic crystal microcavity with the liquid crystal resonant layer tunable by heating has been implemented. The multiple vanishing resonant lines corresponding to optical bound states in the continuum are observed. The abrupt change in the resonant linewidth near the vanishing point can be used for temperature sensing.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk 660041, Russia
Qingdao Innovation and Development Center, Harbin Engineering University, Qingdao, Shandong 266000, China
Department of Physics and Engineering, ITMO University, 197101, Russia
Institute of Electronics and Telecommunications, Peter the Great Saint-Petersburg Polytechnic University, Saint-Petersburg 195251, Russia

Доп.точки доступа:
Krasnov, A. I.; Краснов, Алексей Ильдарович; Pankin, P. S.; Панкин, Павел Сергеевич; Romanenko, G. A.; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Maksimov, D. N.; Максимов, Дмитрий Николаевич; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович
}
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10.

Raman scattering study of the upper phase transition in CsScF4 / A. N. Vtyurin [et al.] // Journal of Raman Spectroscopy. - 2000. - Vol. 31, Is. 3. - P. 151-155, DOI 10.1002/(SICI)1097-4555(200003)31:3151::AID-JRS5103.0.CO;2-T . - ISSN 0377-0486
Кл.слова (ненормированные):
article -- crystal -- heating -- high temperature -- melting point -- neutron scattering -- phase transition -- photon -- Raman spectrometry -- temperature dependence
Аннотация: Effects of the phase transition between the high-temperature tetragonal phases of the CsScF4 crystal were studied by Raman scattering. The appearance of new lines including a soft mode was observed below the phase transition point, in complete accordance with the new crystal symmetry. The behavior of the soft mode, which corresponds to in-phase rotations of ScF6 rigid groups around the z-axis (and out-of-phase within perovskite-like layers), resembles that observed earlier in RbAlF4, which suggests a similar mechanism of this transition in both crystals. Copyright (C) 2000 John Wiley and Sons, Ltd.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk 660036, Russian Federation
Laboratoire Physique de l'Etat Condens, UPRES A CNRS No. 6087, Universit du Maine, 72085 Le Mans Cdex g, France

Доп.точки доступа:
Vtyurin, A. N.; Втюрин, Александр Николаевич; Bulou, A.; Krylov, A. S.; Крылов, Александр Сергеевич; Shmygol, I. V.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
}
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