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Cluster structure and superlattices in Co and Fe films / S. M. Zharkov [et al.] // JETP Letters. - 1997. - Vol. 65, Is. 12. - P. 915-918, DOI 10.1134/1.567449. - Cited References: 9 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary

Аннотация: The process of dendritic crystallization of Co and Fe films is investigated. Electron-diffraction methods show that fractal growth of dendrites in Co and Fe films proceeds by multiple twinning of the elements of a nanostructure consisting of different clusters with close-packing. The formation of superstructures is explained by a shell model of a cluster structure forming nanocrystallites. (C) 1997 American Institute of Physics.

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Держатели документа:
L. V. Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Zharkov, S. M.; Жарков, Сергей Михайлович; Zhigalov, V. S.; Жигалов, Виктор Степанович; Kveglis, L. I.; Lisitsa, Y. V.; Renskaya, K. V.; Frolov, G. I.; Фролов, Георгий Иванович
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Directional crystallization and self-assembling initiated by mechanical shock or electron beam in nanocrystalline Co-C and Fe-C films / L. I. Kveglis, V. S. Zhigalov // Surface Science. - 2007. - Т. 601, № 13. - С. 2873-2875, DOI 10.1016/j.susc.2006.12.044 . - ISSN 0039-6028

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31.15

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Держатели документа:
L.V. Kirensky Institute of Physics,Siberian Division,Russian Academy of Science, Akademgorodok
Доп.точки доступа:
Kveglis, L. I.; Квеглис, Людмила Иосифовна; Zhigalov, V. S.; Жигалов Виктор Степанович
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Electron-microscopy and mossbauer study of superlattices in iron films / G. I. Frolov, O. A. Bayukov, V. S. Zhigalov [et al.] // JETP Letters. - 1995. - Vol. 61, Is. 1. - P. 63-67. - Cited References: 6 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary

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Доп.точки доступа:
Frolov, G. I.; Фролов, Георгий Иванович; Bayukov, O. A.; Баюков, Олег Артемьевич; Zhigalov, V. S.; Жигалов, Виктор Степанович; Kveglis, L. I.; Квеглис, Людмила Иосифовна; Myagkov, V. G.; Мягков, Виктор Григорьевич
}
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Electronic structure of grain boundaries in the Fe-86-Mn-12.7-C(1.3)alloy / A. V. Nyavro [et al.] // Russ. Phys. J. - 2008. - Vol. 51, Is. 9. - P. 973-979, DOI 10.1007/s11182-009-9127-5. - Cited References: 13 . - ISSN 1064-8887

РУБ Physics, Multidisciplinary
Рубрики:
FERROMAGNETIC IRON
EXCHANGE
Аннотация: The importance of studying Fe-Mn-C alloys is related to their wide use as constructional materials in mechanical engineering. In this work an effort has been made to elucidate the physical origin of the magnetization in austenitic steels by calculating the electronic structure of grain boundaries. To theoretically investigate the magnetic properties of a crystal of ferromagnetic bcc iron, the wave functions of the iron atom calculated in view of the spin polarization of a core by the Hartree-Fock method with local exchange-correlation potentials have been used as base functions. This has made it possible to optimize the choice of a zero approximation for the description of the electronic states of ferromagnetic iron and to attain good agreement with the experimental values of the magnetic moment (A mu(theor) = 2.23A mu(B), A mu(exp) = 2.218A mu(B)), of the exchange splitting of the crystal term P-4 (Delta(theor) = Delta(exp) = 0.112 Ry), and of the cross-sections of the Fermi surface. A similar approach has been used to investigate the magnetic states of clusters (nanoclusters) based on the method of scattered waves. The approach developed for clusters of the alloy under investigation makes it possible to calculate the alloy magnetic properties in relation to the cluster size for a varied lattice parameter.

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Держатели документа:
[Nyavro, A. V.
Cherepanov, V. N.] Tomsk VV Kuibyshev State Univ, Tomsk 634050, Russia
[Musikhin, V. A.] Siberian Fed Univ, Krasnoyarsk, Russia
[Arkhipkin, V. G.] Russian Acad Sci, LV Kirenskii Phys Inst, Siberian Branch, Krasnoyarsk, Russia
[Kveglis, L. I.] E Kazakhstan Tech Univ, Ust Kamenogorsk, Kazakhstan
ИФ СО РАН
Tomsk State University, Tomsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
L. V. Kirenskii Physics Institute, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
East-Kazakhstan Technical University, Ust Kamenogorsk, Kazakhstan

Доп.точки доступа:
Nyavro, A. V.; Cherepanov, V. N.; Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Kveglis, L. I.; Musikhin, V. A.
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Emergence of ferromagnetism in nanoparticles of BeTiO3 ceramic with the perovskite structure / A. V. Pavlov, L. I. Kveglis, D. N. Saprykin [et al.] // Inorg. Mater.: Appl. Res. - 2021. - Vol. 12, Is. 1. - P. 88-93, DOI 10.1134/S2075113321010330. - Cited References: 21. - The part of the work involving calculations was supported by the Russian Science Foundation (grant no. 18-19-00268) . - ISSN 2075-1133
Кл.слова (ненормированные):
titanium dioxide nanopowder -- rutile structure -- beryllium ceramic -- magnetic hysteresis -- electrical resistance -- electronic structure -- icosahedral clusters
Аннотация: Emergence of ferromagnetism and an increase in the electrical conductance of BeTiO3 beryllium ceramic with the perovskite structure were discovered experimentally. To explain the reason for appearance of the metallic properties, models are proposed, and calculations of the electronic structure of nanoclusters with different short-range order are performed.

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Публикация на русском языке Появление ферромагнетизма в наночастицах керамики со структурой перовскита BeTiO3 [Текст] / А. В. Павлов, Л. И. Квеглис, Д. Н. Сапрыкин [и др.] // Материаловедение. - 2020. - № 5. - С. 15-20

Держатели документа:
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Sarsen Amanzholov East Kazakhstan State University, Ust’-Kamenogorsk, 070000, Kazakhstan
Tomsk State University, Tomsk, 634050, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Pavlov, A. V.; Kveglis, L. I.; Saprykin, D. N.; Nasibullin, R. T.; Kalitova, A. A.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Nemtsev, I. V.; Немцев, Иван Васильевич; Kantai, N.
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Formation of Tetrahedrally Close-Packed Structures in Tb-Fe and Co-Pd Nanocrystalline Films / L. I. Kveglis [et al.] // Phys. Solid State. - 2002. - Vol. 44, Is. 6. - P. 1117-1121, DOI 10.1134/1.1485018. - Cited References: 16. - This work was supported by the Russian Foundation for Basic Research (project no. 00-02-17358), the International Association of Assistance for the promotion of cooperation with scientists from the New Independent States of the former Soviet Union (project no. 00-100), the 6th Competition of Research Projects of Young Scientists of the Russian Academy of Sciences (1999) (project no. 56), and the Krasnoyarsk Regional Scientific Foundation. . - ISSN 1063-7834

РУБ Physics, Condensed Matter

Аннотация: The crystal structure of Tb(30)Fe(70) and Co(50)Pd(50) nanocrystalline films with strong magnetic anisotropy perpendicular to the film plane (K(perpendicular to) similar to 10(6) erg/cm(3)) is investigated using electron diffraction and transmission electron microscopy. All the studied films in the initial nanocrystalline phase undergo an explosive crystallization with the formation of dendrite structures. It is demonstrated that, after crystallization, the Tb-Fe and Co-Pd films exhibit a tetrahedrally close-packed atomic structure that has no analogs among these materials in the equilibrium state. The internal stresses in the films under investigation are estimated from an analysis of the bend extinction contours in the electron microscope images. The inference is made that strong perpendicular magnetic anisotropy can be associated with magnetostriction anisotropy due to the specific features of the film structure. (C) 2002 MAIK "Nauka/Interperiodica".

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Держатели документа:
[Kveglis, L. I.
Jarkov, S. M.
Bondarenko, G. V.
Yakovchuk, V. Yu.
Popel, E. P.] 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:
Kveglis, L. I.; Jarkov, S. M.; Bondarenko, G. V.; Бондаренко, Геннадий Васильевич; Yakovchuk, V. Y.; Popel, E. P.; Russian Foundation for Basic Research [00-02-17358]; International Association of Assistance for the promotion of cooperation; New Independent States of the former Soviet Union [00-100]; Russian Academy of Sciences [56]; Krasnoyarsk Regional Scientific Foundation
}
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    Kveglis, L. I.
    Crystal and magnetic structures under martensite transformation in Fe86Mn13C alloy / L. I. Kveglis, M. N. Volochaev, F. M. Noskov // Технические и естественные науки: теория и практика : сб. материалов / ред. К. Е. Румянцев. - Киров : Междунар. центр науч.-исслед. проектов, 2015. - С. 190-201
   Перевод заглавия: Кристаллическая и магнитная структура при мартенситном превращении в сплаве Fe86Mn13C
Аннотация: Self-assembly of crystal and magnetic structures was experimentally observed on a multiscale level in bulk and thin film Fe86Mn13C samples. A cluster model of the atomic self-assembly has been suggested based on the concept of a liquid-like state of material in localized areas produced by plastic deformation waves
Экспериментально исследована самоорганизация кристаллической и магнитной структур на различных масштабных уровнях в массивных и тонкопленочных образцах сплава Fe86Mn13C. Предложена кластерная модель самоорганизации структуры на атомном уровне, основанная на представлениях о жидкоподобном состоянии материала в локализованных областях, сформированных волнами пластической деформации.

Материалы конференции

Доп.точки доступа:
Румянцев, К. Е. \ред.\; Volochaev, M. N.; Волочаев, Михаил Николаевич; Noskov, F. M.
}
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Kveglis, L. I.
Scale invariance of the structure upon explosive crystallization of amorphous films / L. I. Kveglis, V. A. Seredkin, A. V. Kuzovnikov // JETP Letters. - 2005. - Vol. 82, Is. 1. - P. 22-25, DOI 10.1134/1.2045332. - Cited References: 19 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary

Аннотация: Experimental results that are obtained in the process of the explosive crystallization of x-ray amorphous films Fe2Tb and CoPd with magnetic anisotropy perpendicular to the film plane are reported. The internal bending of thus obtained "single crystals" reaches 100 deg/mu m. An explanation of the mechanism and kinetics of explosive crystallization in the Fe2Tb and CoPd films is proposed in the framework of the shear transformation zone theory. (C) 2005 Pleiades Publishing, Inc.

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Держатели документа:
Russian Acad Sci, Siberian Div, Kirenski Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirenski Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Seredkin, V. A.; Середкин, Виталий Александрович; Kuzovnikov, A. V.
}
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Kveglis, L. I.
Structural self-organization and the formation of perpendicular magnetic anisotropy in Co50Pd50 nanocrystalline films / L. I. Kveglis, S. M. Jarkov, I. V. Staroverova // Phys. Solid State. - 2001. - Vol. 43, Is. 8. - P. 1543-1548, DOI 10.1134/1.1395099. - Cited References: 22 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
METAL THIN-FILMS
MICROSTRUCTURE
Аннотация: The correlation of the atomic-order structure and the energy density of perpendicular magnetic anisotropy in Co50Pd50 films is investigated. Structural models for nanocrystalline Co50Pd50 films are proposed. It is shown that processes of structural self-organization in the films form nontrivial atomic-order structures. These structures can exist owing to high elastic stresses, which apparently ensure the emergence of strong magnetic anisotropy (K-perpendicular to similar to 10(6) erg/cm(3)). (C) 2001 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:
Jarkov, S. M.; Staroverova, I. V.
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10.

Kveglis, L. I.
The self-organization of tetrahedrally close-packed structures in magnetic nanocrystalline Tb-Fe and Co-Pd films / L. I. Kveglis, A. V. Kuzovnikov, I. V. Timofeev ; ed.: BM Darinskii, , BM Darinsk // Mechanical spectroscopy III: Mechanical spectroscopy and relaxation phenomena IN SOLIDS. Ser. Solid state phenomena : Trans tech publications LTD, 2006. - Vol. 115. - P. 267-273. - Cited References: 19 . - ISBN 1012-0394. - ISBN 3-908451-24-8

РУБ Materials Science, Multidisciplinary + Physics, Applied + Physics, Condensed Matter + Spectroscopy
Рубрики:
AMORPHOUS FILMS
Кл.слова (ненормированные):
dissipative structures -- explosive crystallization -- thermal conductivity -- Tb-Fe films -- Co-Pd films
Аннотация: The self-organization of an atomic structure in Tb30Fe70 and Co50Pd50 films possessing of high values of the perpendicular magnetic anisotropy (PMA) constant (K perpendicular to similar to 10(6) erg/cm(3)) is investigated by transmission electron microscopy. The crystallization of the films is realized in an explosive way with formation of different dissipative structures from the initial nanocrystalline state. In present work the structural model of a thin film in mezzo-scale and the correlation of a structure with magnetic properties are discussed.

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Доп.точки доступа:
Kuzovnikov, A. V.; Timofeev, I. V.; Тимофеев, Иван Владимирович; Darinskii, B. M. \ed.\; International Conference on Mechanical Spectroscopy and Relaxation Phenomena in Solids (3 ; 2006 ; Cracow, Poland)
}
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