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1.


   
    Электронный туннельный эффект и особенности кристаллизации наноразмерных золей металлов / А. П. Гаврилюк, И. Л. Исаев, С. В. Карпов, В. С. Герасимов // Инженерная физика. - 2009. - № 2. - С. 51-53 . - ISSN 2072-9995
   Перевод заглавия: Electronic tunnel effect and features of crystallization nano sizes zole of metals
Рубрики:

Кл.слова (ненормированные):
Nano particles -- наночастицы -- Tunnel effect -- bimodal bands -- туннельный эффект -- бимодальный ансамбль
Аннотация: Исследуются закономерности самоорганизации бимодальных ансамблей наночастиц в кристаллические структуры в лиозолях металлов (на примере органозолей золота) методом броуновской динамики. Показана возможность селективной коагуляции разно-размерных частиц вследствие асимметрии встречных туннельных электронных потоков межу частицами разных размеров и их взаимного разнополярного заряжения; исследуется кинетика этого процесса.
Explored conformity to the law organizations of bimodal bands of nano particles in crystalline structures in liozole metals (for example of organozole gold) by the method of brownian dynamics. Possibility of selective coagulation of particles of different-sizes is shown because of asymmetry of meetings tunnel electronic streams boundary path by the particles of different sizes and their mutual different arctic loading; explored kinetics of this process.

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Держатели документа:
Институт вычислительного моделирования СО РАН
Институт физики им. Л.В. Киренского СО РАН
Политехнический институт Сибирского Федерального университета

Доп.точки доступа:
Гаврилюк, Анатолий Петрович; Исаев, Иван Леонидович; Isaev, I. L.; Карпов, Сергей Васильевич; Karpov, S. V.; Герасимов, Валерий Сергеевич; Gerasimov V. S.
}
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2.


   
    Экспериментальное исследование процессов кристаллизации K2Ba(NO3)4 из раствор-расплава / К. Е. Коржнева [и др.] // Фундамент. пробл. совр. материаловед. - 2018. - Т. 15, № 1. - С. 11-15, DOI 10.25712/ASTU.1811-1416.2018.01.001. - Библиогр.: 7. - Работа выполнена в рамках государственного задания, проект № 0330 - 2016 - 0008 и при поддержке Российского фонда фундаментальных исследований (грант № 18-32-00359). . - ISSN 1811-1416
   Перевод заглавия: Experimental study of K2Ba(NO3)4 crystallization processes from solution-melt
Кл.слова (ненормированные):
рост из раствор-расплава -- двойные соединения -- нецентросимметричные кристаллы K2Ba(NO3)4 -- рентгенофазовый и термический анализы -- оптическое пропускание -- growth from solution-melt -- double compounds -- noncentrosymmetrical crystals K2Ba(NO3)4 -- X-ray diffraction and thermal analysis -- optical transmittance
Аннотация: С развитием технологий неуклонно возрастает потребность в высокоэффективных функциональных материалах. Поэтому все более важной и актуальной становится задача разработки принципов и алгоритмов поиска этих материалов. В настоящее время системы двойных нитратов привлекают внимание исследователей тем, что в этой группе существуют двойные соединения с нецентросимметричной структурой, которые рассматриваются как перспективные нелинейные материалы для коротковолнового диапазона. В результате проведенных ранее исследований из водных растворов были получены кристаллы K2Ba(NO3)4. Было выявлено, что K2Ba(NO3)4 при температуре 197,3 оС разлагается на KNO3 и Ba(NO3)2. Из-за большого количества дефектов (дендриты, зарастание основными гранями роста) оптическое качество этих кристаллов оказалось невысоким. Что обусловило необходимость поиска новых методик выращивания, обеспечивающих получение качественных оптически прозрачных кристаллов. Поэтому нами исследовались процессы кристаллизации K2Ba(NO3)4 из раствор-расплава. Подобран растворитель состава LiNO3-CsNO3-KNO3 с температурой эвтектик ниже температуры разложения двойного соединения. Выращены прозрачные кристаллы K2Ba(NO3)4 размером до 0,7 мм, определена их структура, показано отсутствие у них центра симметрии. На данных кристаллах были сняты спектры оптического пропускания. Исследование двух спектров данного соединения выращенного разными методами показало, что кристаллы, полученные из водных растворов, прозрачен от 0,25 мкм до 2,2 мкм, при этом наблюдается пик поглощения с максимум 0,3 мкм. Кристаллы, выращенные методом из раствор-расплава, прозрачны от 0,3 мкм до 2,2 мкм. Ширина запрещенной зоны составляет около 5 эВ.
With the development of technology, the need for highly efficient functional materials is steadily increasing. Therefore, the developing of principles and algorithms for these materials' search becomes more and more important and actual. Currently systems of double nitrates attract researchers attention due to the double compounds with a noncentrosymmetric structure which are considered as promising nonlinear materials for the short-wave range. As a result of previous studies K2Ba(NO3)4 crystals were obtained from aqueous solutions. It was found that K2Ba(NO3)4 decomposes on KNO3 and Ba(NO3)2 at the temperature of 197.3 oC. Due to the large amount of defects (dendrites, overgrowing by the main growth facets), the optical quality of these crystals was not high. This necessitated the search for new growth techniques that provide the production of high-quality optically transparent crystals. Therefore, we investigated the processes of crystallization of K2Ba(NO3)4 from a solution-melt. A solvent of the LiNO3-CsNO3-KNO3 composition with a eutectic temperature below the decomposition temperature of the double compound was chosen. Transparent crystals of K2Ba(NO3)4 up to 0.7 mm in size were grown, their structure was determined, and the absence of center of symmetry was shown. The optical transmission spectra were investigated on these crystals. The study of two spectra of this compound grown by different methods showed that crystals obtained from aqueous solutions are transparent from 0.25 μm to 2.2 μm, with an absorption peak with a maximum of 0.3 μm. Crystals grown by the solution-melt method are transparent from 0.3 μm to 2.2 μm. The width of the band gap is about 5 eV.

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Держатели документа:
Новосибирский государственный университет, ул. Пирогова, 2, 630090, Новосибирск, Россия
Институт геологии и минералогии им. В.С. Соболева СО РАН, пр. Академика Коптюга, 3, 630090, Новосибирск, Россия
Институт физики им. Л.В. Киренского СО РАН, ул. Академгородок, 50, стр. 38, Красноярск, 660036, Россия
Дальневосточный государственный университет путей сообщения, ул. Серышева, 47, 680021, Хабаровск, Россия

Доп.точки доступа:
Коржнева, Ксения Евгеньевна; Исаенко, Л. И.; Елисеев, Александр Павлович; Молокеев, Максим Сергеевич; Molokeev, M. S.
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3.


   
    Thermokinetic study of aluminum-induced crystallization of a-Si: The effect of Al layer thickness / S. M. Zharkov, V. V. Yumashev, E. T. Moiseenko [et al.] // Nanomaterials. - 2023. - Vol. 13, Is. 22. - Ст. 2925, DOI 10.3390/nano13222925. - Cited References: 70. - This work was supported by the Russian Science Foundation under grant #22-13-00313 . - ISSN 2079-4991
   Перевод заглавия: Термокинетическое исследование кристаллизации a-Si, индуцированной алюминием: влияние толщины слоя Al
Кл.слова (ненормированные):
amorphous silicon -- Al/Si -- nanolayer -- multilayer film -- metal-induced crystallization -- aluminum-induced crystallization -- kinetics -- activation energy -- enthalpy -- simultaneous thermal analysis (STA)
Аннотация: The effect of the aluminum layer on the kinetics and mechanism of aluminum-induced crystallization (AIC) of amorphous silicon (a-Si) in (Al/a-Si)n multilayered films was studied using a complex of in situ methods (simultaneous thermal analysis, transmission electron microscopy, electron diffraction, and four-point probe resistance measurement) and ex situ methods (X-ray diffraction and optical microscopy). An increase in the thickness of the aluminum layer from 10 to 80 nm was found to result in a decrease in the value of the apparent activation energy Ea of silicon crystallization from 137 to 117 kJ/mol (as estimated by the Kissinger method) as well as an increase in the crystallization heat from 12.3 to 16.0 kJ/(mol Si). The detailed kinetic analysis showed that the change in the thickness of an individual Al layer could lead to a qualitative change in the mechanism of aluminum-induced silicon crystallization: with the thickness of Al ≤ 20 nm. The process followed two parallel routes described by the n-th order reaction equation with autocatalysis (Cn-X) and the Avrami–Erofeev equation (An): with an increase in the thickness of Al ≥ 40 nm, the process occurred in two consecutive steps. The first one can be described by the n-th order reaction equation with autocatalysis (Cn-X), and the second one can be described by the n-th order reaction equation (Fn). The change in the mechanism of amorphous silicon crystallization was assumed to be due to the influence of the degree of Al defects at the initial state on the kinetics of the crystallization process.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Laboratory of Electron Microscopy, Siberian Federal University, Krasnoyarsk 660041, Russia
Institute of Chemistry and Chemical Technology, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Zharkov, S. M.; Жарков, Сергей Михайлович; Yumashev, V. V.; Moiseenko, E. T.; Altunin, R. R.; Solovyov, L. A.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Zeer, G. M.; Nikolaeva, N. S.; Belousov, O. V.
}
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4.


    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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5.


   
    The magnetoelastic effect in CoxMn1-xS solid solutions / S. S. Aplesnin [et al.] // Solid State Commun. - 2010. - Vol. 150, Is. 13-14. - P. 564-567, DOI 10.1016/j.ssc.2010.01.009. - Cited References: 13. - This work was supported by the Russian Foundation for Basic Research projects no. 08-02-00364-a, no. 08-02-90031, no. F08037, F08-229, and no. 09-02-00554-a. . - ISSN 0038-1098
РУБ Physics, Condensed Matter
Рубрики:
YVO3 SINGLE-CRYSTAL
   SPIN-STATE

   TRANSITION

   TRANSPORT

   PHYSICS

   LACOO3

Кл.слова (ненормированные):
Semiconductors -- X-ray scattering -- Galvanomagnetic effects -- Thermal expansion -- Semiconductors -- X-ray scattering -- Galvanomagnetic effects -- Thermal expansion -- Semiconductors -- X-ray scattering -- Coefficient of thermal expansion -- Magnetoelastic effects -- Orbital ordering -- Temperature hysteresis -- Temperature range -- Zero magnetic fields -- Crystallization -- Electric resistance -- Magnetic field effects -- Magnetoresistance -- Manganese -- Manganese compounds -- Neon -- Organic polymers -- Scattering -- Semiconductor quantum dots -- Solid solutions -- Solidification -- Thermal stress -- X ray scattering -- Thermal expansion
Аннотация: The magnetization of cation-substituted CoxMn(1-x)S sulfides upon cooling in zero magnetic field and in a field in the temperature range 4-300 K has been measured and the resistance versus magnetic field (up to 10 kOe) dependences have been obtained. Magnetoresistance and temperature hysteresis of magnetization versus prehistory are found at the magnetic field H < 0.1 T and at T < 240 K. The interrelation between the magnetic and elastic subsystems of the CoxMn1-xS solid solutions has been established. A jump in the coefficient of thermal expansion is observed at the Neel temperature. The features of the physical properties are explained by orbital ordering. (C) 2010 Elsevier Ltd. All rights reserved.

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Держатели документа:
[Aplesnin, S. S.
Ryabinkina, L. I.
Romanova, O. B.
Har'kov, A. M.] MF Reshetneva Aircosm Siberian State Univ, Krasnoyarsk 660014, Russia
[Gorev, M. V.
Balaev, A. D.
Eremin, E. V.
Bovina, A. F.] Russian Acad Sci, KSC Siberian Branch, Ctr Shared, Krasnoyarsk 660036, Russia
КНЦ СО РАН
M.F. Reshetneva Aircosmic Siberian State University, Krasnoyarsk, 660014, Russian Federation
Center of shared using KSC Siberian branch, Russian Academy Science, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Ryabinkina, L. I.; Рябинкина, Людмила Ивановна; Romanova, O. B.; Романова, Оксана Борисовна; Har'kov, A. M.; Gorev, M. V.; Горев, Михаил Васильевич; Balaev, A. D.; Балаев, Александр Дмитриевич; Eremin, E. V.; Еремин, Евгений Владимирович; Bovina, A. F.; Бовина, Ася Федоровна
}
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6.


   
    Synthesis and magnetic properties of β-Cu3Fe4(VO4)6 single crystals / D. A. Balaev [et al.] // Solid State Phenom. : Selected, peer reviewed papers. - 2015. - Vol. 233-234: Achievements in Magnetism. - P. 137-140, DOI 10.4028/www.scientific.net/SSP.233-234.137 . - ISSN 1662-9779. - ISSN 978-3-038
Рубрики:
Achievements in magnetism
Кл.слова (ненормированные):
lyonsite -- spontaneous crystallization -- spin glass -- single crystal -- magnetization
Аннотация: β-Cu3Fe4(VO4)6 single crystals were synthesized. The X-ray, magnetic, Mössbauer, and EPR investigations of the crystals were fulfilled. It is established that single-crystal β-Cu3Fe4(VO4)6 is a spin glass at low temperatures. Freezing temperature varies considerably depending on the orientation of the magnetic field relative to the crystal axes. Spin-glass state is confirmed by the relaxation of the magnetization.

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Доп.точки доступа:
Perov, N. \ed.\; Semisalova, A. \ed.\; Balaev, D. A.; Балаев, Дмитрий Александрович; Bayukov, O. A.; Баюков, Олег Артемьевич; Eremin, E. V.; Еремин, Евгений Владимирович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Pankrats, A. I.; Панкрац, Анатолий Иванович; Sablina, K. A.; Саблина, Клара Александровна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Vorotynov, A. M.; Воротынов, Александр Михайлович; Moscow International Symposium on Magnetism(6 ; 2014 ; June-July ; Moscow)
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7.


   
    Solid-phase transformation of Cs+- and Sr2+-bearing zeolite sorbents derived from cenospheres to mineral-like forms / S. N. Vereshchagin [et al.] // Materials Research Society Symposium Proceedings. - 2009. - Vol. 1193: 32nd Symposium on Scientific Basis for Nuclear Waste Management (24 May 2009 through 29 May 2009, St. Petersburg, ) Conference code: 79940. - P87-94 . - ISBN 02729172 (ISSN); 9781605111667 (ISBN)
Кл.слова (ненормированные):
Apparent activation energy -- Cenospheres -- Crystalline minerals -- Crystalline phasis -- Crystallization temperature -- Higher temperatures -- Long-term disposal -- Multi phase systems -- Pollucites -- Principal Components -- Solid-phase transformation -- Temperature range -- Thermal treatment -- Thermochemical transformations -- Transformation temperatures -- XRD analysis -- Activation energy -- Atmospheric pressure -- Cesium -- Crystalline materials -- Crystallization -- Fly ash -- Metallic glass -- Radioactive waste disposal -- Radioactive wastes -- Silicate minerals -- Sodium -- Sorbents -- Sorption -- Strontium -- Synthesis (chemical) -- Waste management -- Atmospheric temperature
Аннотация: The paper describes the studies of the transformation of Cs+- and Sr2+-containing zeolite sorbents synthesized from fly ash cenospheres to crystalline mineral composition, suitable for the long-term disposal. Series of Cs+- and Sr2+-exchanged NaP1-containing sorbents were subjected to the thermochemical transformation in the temperature range 40-1100°C at atmospheric pressure in air and the progress of reaction was monitored by DSC and XRD analysis. It was shown that initial sodium zeolite undergoes two-step transformation at 736-785°C and 892-982°C forming nepheline as the principle product, with the conversion temperatures being dependant on the heating rate. The thermal treatment of Cs+-bearing zeolite sorbent led to formation of a complex multiphase system, the principal components of which were nepheline and pollucite. Increasing cesium content in the samples led to a monotonous shift of crystallization peak to the higher temperature range (1005-1006°C). A more complicated behavior was observed for Sr2+-containing samples, for which the crystallization temperature tends to increase (compared with NaP1) at lower Sr contents, but it starts decreasing parallel to the Sr2+ content at Sr2+ loadings 10 mg/g. The principal crystalline phases in Sr-NaP1 sample conversion were nepheline and Sr2+- containing feldspar, the quantity of which increased parallel to the increase of strontium content in zeolite. Apparent activation energies of thermochemical transformations were calculated and possible approaches to reduce transformation temperature are discussed and experimentally illustrated. © 2009 Materials Research Society.

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Держатели документа:
Institute of Chemistry and Chemical Technology SB RAS, 42 K. Marx Street, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 79 Svobodnyi Avenue, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Vereshchagin, S.N.; Vereshchagina, T.A.; Solovyov, L.A.; Shishkina, N.N.; Vasilieva, N.G.; Anshits, A.G.
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8.


    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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9.


   
    Raman scattering from phonons and magnons in RFe3(BO3)(4) / D. . Fausti [et al.] // Phys. Rev. B. - 2006. - Vol. 74, Is. 2. - Ст. 24403, DOI 10.1103/PhysRevB.74.024403. - Cited References: 26 . - ISSN 1098-0121
РУБ Physics, Condensed Matter
Рубрики:
IRON BORATE GDFE3(BO3)(4)
   LIGHT-SCATTERING

   CRYSTALS

   ND

   CRYSTALLIZATION

   TRANSITIONS

   GENERATION

   LASER

Аннотация: Inelastic light scattering spectra of several members of the RFe3(BO3)(4) family reveal a cascade of phase transitions as a function of temperature, starting with a structural, weakly first-order, phase transition followed by two magnetic phase transitions. Those consist of the ordering of the Fe-spin sublattice, revealed by all the compounds, and a subsequent spin-reorientational transition for GdFe3(BO3)(4). The Raman data evidence a strong coupling between the lattice and magnetic degrees of freedom in these borates. The Fe-sublattice ordering leads to a strong suppression of the low-energy magnetic scattering, and a multiple peaked two-magnon scattering continuum is observed. Evidence for short-range correlations is found in the "paramagnetic" phase by the observation of a broad magnetic continuum in the Raman data, which persists up to surprisingly high temperatures.

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Держатели документа:
Univ Groningen, Ctr Mat Sci, NL-9747 AG Groningen, Netherlands
RAS, Inst Spect, Troitsk 142190, Moscow Region, Russia
RAS, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Material Science Centre, University of Groningen, 9747 AG Groningen, Netherlands
Institute of Spectroscopy, RAS, 142190, Troitsk, Moscow Region, Russian Federation
L.V. Kirensky Institute of Physics, Siberian Branch of RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Fausti, D.; Nugroho, A. A.; van Loosdrecht, PHM; Klimin, S. A.; Popova, M. N.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич
}
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10.


   
    Phase transitions in elpasolites (ordered perovskites) / I. N. Flerov [et al.] // Materials Science and Engineering R: Reports. - 1998. - Vol. 24, Is. 3. - P. 81-151. - Cited References: 174 . - ISSN 0927-796X
РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
ELASTIC NEUTRON-DIFFRACTION
   MII = CO

   RAMAN-SCATTERING

   THERMODYNAMIC PROPERTIES

   CRYSTAL-STRUCTURE

   SINGLE-CRYSTALS

   RB2KMIIIF6 ELPASOLITES

   CUBIC PEROVSKITES

   TEMPERATURE FORM

   HIGH-RESOLUTION

Кл.слова (ненормированные):
Crystal atomic structure -- Crystal growth -- Crystal lattices -- Crystallization -- Crystallography -- Ferroelectricity -- Hydrostatic pressure -- Order disorder transitions -- Single crystals -- Thermodynamics -- Elpasolites -- Landau theory -- Perovskite
Аннотация: Many compounds with general chemical formula A2BB?X6 and with tolerance factor value t < 1 crystallize in the elpasolite (ordered perovskite) structure. Different preparative methods have been considered. For example, the Bridgman technique is the most suitable method of growing single crystals of halogenated elpasolites with monoatomic cations. Group-theory and symmetry analyses have allowed us to build a scheme of possible structural distortions connected with octahedral rotations and displacements of ions. Experimental observations have proven that ferroelastic phase transitions occurring most frequently in elpasolites are due to small octahedra tilts. Quantitative analysis allows the possibility of describing these transitions in the framework of the thermodynamic Landau theory. Hydrostatic pressure and the substitution of atoms in different crystallographic sites allow to change significantly the succession and the temperature of phase transitions. The hypothesis of bond stresses is able to predict the possible occurrence of a phase transition for a particular elpasolite and/or the role of the octahedra rotations in the transformation. The mechanism of phase transitions in elpasolites and related compounds has also been considered. One can assume that a displacive mechanism associated with a strong anharmonicity plays a large role in phase transitions occurring in compounds with monoatomic cations. On the other hand, for instance, in cryolites with ammonium cations, the transitions originate from an order-disorder phenomenon. В© 1998 Elsevier Science S.A. All rights reserved.

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Держатели документа:
L.V. Kirensky Institute of Physics, Krasnoyarsk 660036, Russian Federation
Inst. Chim. Matiere Cond. B., Universite Bordeaux I, 33608, Pessac Cedex, France
Lab. de Phys.-Chim. Molec., Universite Bordeaux I, 33405, Talence Cedex, France

Доп.точки доступа:
Flerov, I. N.; Флёров, Игорь Николаевич; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; Tressaud, A.; Grannec, J.; Couzi, M.
}
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11.


   
    Phase formation upon crystallization of SrO center dot 2B(2)O(3) glasses / A. I. Zaitsev [et al.] // Crystallogr. Rep. - 2011. - Vol. 56, Is. 1. - P44-51, DOI 10.1134/S1063774511010263. - Cited Reference Count: 21 . - JAN. - ISSN 1063-7745
Рубрики:
STRONTIUM TETRABORATE
   LUMINESCENCE

   SRB4O7

   GROWTH

Кл.слова (ненормированные):
crystalline form -- crystalline formation -- crystalline phasis -- glass surfaces -- phase formations -- thermal analysis -- thermal stability -- crystalline materials -- crystallization -- glass -- thermoanalysis -- thermodynamic stability -- metastable phases
Аннотация: The crystallization of SrO center dot 2B(2)O(3) glasses has been studied. Four different crystalline formations were found to form simultaneously and independently on the glass surface: stable alpha-SrB4O7 crystals and metastable crystalline forms (beta-SrB4O7, Sr4B14O25, and spherulites (presumably, mixtures of crystalline phases)). The ranges of thermal stability of the newly formed metastable phases have been established using thermal analysis.

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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Zaitsev, A. I.; Зайцев, Александр Иванович; Zamkov, A. V.; Замков, Анатолий Васильевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Cherepakhin, A. V.; Черепахин, Александр Владимирович; Koroleva, N. S.
}
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12.


   
    Peculiarities and comparison of Cu2MBO5 (M = Fe, Mn, Cr) ludwigites crystallization in Bi2O3-MoO3-Na2O-B2O3 multicomponent fluxes / M. S. Molokeev, A. F. Bovina, K. A. Shabanova [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. G : Frustrated and disordered magnetism. - Ст. G.P8. - P. 25-26. - Cited References: 6. - The study was supported by the Russian Science Foundation (grant No. 22-12-20019) . - ISBN 978-5-94469-051-7

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Siberian Federal University, Krasnoyarsk, Russia
Far Eastern State Transport University, Khabarovsk, Russia
Siberian State University of Science and Technologies, Krasnoyarsk, Russia

Доп.точки доступа:
Molokeev, M. S.; Молокеев, Максим Сергеевич; Bovina, A. F.; Бовина, Ася Федоровна; Shabanova, K. A.; Kokh, D.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Eremin, E. V.; Еремин, Евгений Владимирович; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Moshkina, E. M.; Мошкина, Евгения Михайловна; 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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13.


    Edelman, I.
    Oxide glasses with magnetic nanoparticles: transparent magnets (Faraday rotation and electron magnetic resonance studies) / I. . Edelman, J. . Kliava // Phys. Status Solidi B. - 2009. - Vol. 246, Is. 10. - P. 2216-2231, DOI 10.1002/pssb.200945169. - Cited References: 87. - This work is supported in part by RFBR-CNRS joint project, grant No 07-02-92174. We are grateful to E. Petrakovskaja and O. Ivanova for measuring and discussing, respectively, the EMR spectra in thermally treated samples and the FR spectral and magnetic field dependences. . - ISSN 0370-1972
РУБ Physics, Condensed Matter
Рубрики:
SPIN-HAMILTONIAN PARAMETERS
   SINGLE-DOMAIN PARTICLES

   SUPERPARAMAGNETIC RESONANCE

   CRYSTALLIZATION BEHAVIOR

   FERRIMAGNETIC RESONANCE

   PARAMAGNETIC-RESONANCE

   TEMPERATURE-DEPENDENCE

   COMPUTER-SIMULATIONS

   FINE PARTICLES

   BORATE GLASSES

Аннотация: In the first part of this paper we outline the state of the art in the field of magnetic nanoparticles in oxide glasses. We describe the theoretical background of two complementary techniques used for the studies of the state of paramagnetic ions, clusters and magnetic particles in a diamagnetic matrix, viz., magnetooptical Faraday rotation (FR) and electron magnetic resonance (EMIR) and we overview previous results obtained with these techniques for several glass systems. In the second part, we highlight the case of potassium-alumina-borate glasses - a glassy system where doping with paramagnetic oxides results in formation of magnetic particles at very low contents of paramagnetic additions: Fe(2)O(3) and MnO. In the special case when the ratio of the iron and manganese oxides in the charge is 3/2, magnetic nanoparticles with characteristics close to those of manganese ferrite are formed already at the first stage of the glass preparation. After thermal treatment all glasses show FR and EMR spectra attesting to the presence of superparamagnetic nanoparticles, characterized by relatively broad size and shape distributions. The formation of magnetic nanoparticles confers to these glasses magnetic and magnetooptical properties typical of magnetically ordered substances. At the same time, the glasses remain transparent in a part of the visible and near infrared spectral range and display a high FR value. Such properties make them particularly interesting for use as new media for various magneto-optical devices. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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Держатели документа:
[Edelman, Irina] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Kliava, Janis] Univ Bordeaux 1, Ctr Phys Mol Opt & Hertzienne, CNRS, UMR 5798, F-33405 Talence, France
ИФ СО РАН
L.V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 38, 660036 Krasnoyarsk, Russian Federation
Centre de Physique Moleculaire Optique et Hertzienne, Universite Bordeaux1-CNRS, UMR 5798, 351 cours de la Liberation, 33405 Talence cedex, France

Доп.точки доступа:
Kliava, J.; RFBR-CNRS [07-02-92174]
}
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14.


    Myagkov, V. G.
    Oscillations of the crystallization front of adsorbed water / V. G. Myagkov // JETP Letters. - 2000. - Vol. 72, Is. 1. - P. 4-6, DOI 10.1134/1.1311396. - Cited References: 25 . - ISSN 0021-3640
РУБ Physics, Multidisciplinary
Рубрики:
RAPID SOLIDIFICATION
   PATTERN-FORMATION

   INSTABILITIES

   EQUILIBRIUM

   ALLOYS

Аннотация: Relaxation oscillations of the crystallization front in a gradient temperature field have been observed for water adsorbed on a metal film deposited on a glass substrate. The metal film plays an important role in heat removal from the crystallization front and determines the existence of oscillations. A possible mechanism is proposed for the development of oscillations. It is shown that the oscillations observed are similar to the oscillations of the front of self-propagating high-temperature synthesis. (C) 2000 MAIK "Nauka / Interperiodica".

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

Доп.точки доступа:
Мягков, Виктор Григорьевич
}
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15.


   
    Optical spectra, crystal-field parameters, and magnetic susceptibility of multiferroic NdFe3(BO3)(4) / M. N. Popova [et al.] // Phys. Rev. B. - 2007. - Vol. 75, Is. 22. - Ст. 224435, DOI 10.1103/PhysRevB.75.224435. - Cited References: 22 . - ISSN 1098-0121
РУБ Physics, Condensed Matter
Рубрики:
IRON BORATE GDFE3(BO3)(4)
   CRYSTALLIZATION

   SPECTROSCOPY

   LASER

   ND3+

Аннотация: We report high-resolution optical absorption spectra for NdFe3(BO3)(4) trigonal single crystal, which is known to exhibit a giant magnetoelectric effect below the temperature of magnetic ordering T-N=33 K. The analysis of the temperature-dependent polarized spectra reveals the energies and, in some cases, symmetries and exchange splittings of Nd3+ 84 Kramers doublets. We perform crystal-field calculations starting from the exchange-charge model, obtain a set of six real crystal-field parameters, and calculate wave functions and magnetic g factors. In particular, the values g(perpendicular to)=2.385 and g(parallel to)=1.376 were found for the Nd3+ ground-state doublet. We obtain B-loc=7.88 T and parallel to J(FN)parallel to=0.48 K for the values of the local effective magnetic field at liquid-helium temperatures at the Nd3+ site and the Nd-Fe exchange integral, respectively, using the experimentally measured Nd3+ ground-state splitting of 8.8 cm(-1). To check the reliability of our set of crystal-field parameters, we model the magnetic susceptibility data from literature. A dimer containing two nearest-neighbor iron ions in the spiral chain is considered to partly account for quasi-one-dimensional properties of iron borates, and then the mean-field approximation is used. The results of calculations with the exchange parameters for Fe3+ ions J(nn)=-6.25 K (intrachain interactions) and J(nnn)=-1.92 K (interchain interactions) obtained from fitting agree well with the experimental data.

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Держатели документа:
Russian Acad Sci, Inst Spect, Troitsk 142190, Moscow Region, Russia
Kazan VI Lenin State Univ, Kazan 420008, Russia
Ecole Natl Super Chim Paris, CNRS, UMR7574, Lab Chim Appl & Etat Solide, F-75231 Paris, France
Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119992, Russia
RAS, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Institute of Spectroscopy, Russian Academy of Sciences, 142190 Troitsk, Russian Federation
Kazan State University, 420008 Kazan, Russian Federation
Laboratoire de Chimie Applique'e de l'E Tat Solide, CNRS-UMR7574, ENSCP, 11, Rue Pierre et Marie Curie, F-75231 Paris Cedex 05, France
Physics Faculty, Moscow State University, 119992 Moscow, Russian Federation
L.V. Kirensky Institute of Physics, Siberian Branch of RAS, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Popova, M. N.; Chukalina, E. P.; Stanislavchuk, T. N.; Malkin, B. Z.; Zakirov, A. R.; Antic-Fidancev, E.; Popova, E. A.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Temerov, V. L.; Темеров, Владислав Леонидович
}
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16.


   
    New Y2BaAl4SiO12:Ce3+ yellow microcrystal-glass powder phosphor with high thermal emission stability / H. Ji [et al.] // J. Mater. Chem. C. - 2016. - Vol. 4, Is. 41. - P. 9872-9878, DOI 10.1039/c6tc03422e. - Cited References: 32. - This study was partially supported by the National Natural Science Foundation of China (Grant No. 51272259, 51572232 and 51561135015). R. X. was also partially supported by the JSPS KAKENHI (No. 15K06448). M. M. and Z. X. were also partially supported by the Russian Foundation for Basic Research (No. 15-52-53080). H. J. thanks the China Scholarship Council (CSC) for scholarship support. . - ISSN 2050-7534
   Перевод заглавия: Новый желтый стекло-кристаллический порошковый люминофор Y2BaAl4SiO12:Ce3+ с высокой термической стабильностью излучения
Кл.слова (ненормированные):
Aluminum -- Crystal structure -- Crystallization -- Glass -- Laser applications -- Light emission -- Microcrystals -- Phosphors -- Precipitation (chemical) -- Quenching -- Silicon -- Silicon oxides -- Single crystals -- Structural design -- Crystalline nature -- Crystallization behavior -- Emission intensity -- Microcrystal glass -- Morphology structures -- Phase formation behavior -- Structure analysis -- Temperature increase -- Cerium
Аннотация: To decrease the rare earth element usage and synthesis cost of Y3Al5O12:Ce phosphor, the Y2BaAl4SiO12 compound is developed as a new host for Ce3+ employing the solid solution design strategy. The design uses polyhedron substitution where YO8/AlO4 are partially replaced by BaO8/SiO4, respectively. Structure analysis of Y2BaAl4SiO12 proves that it successfully preserves the garnet structure, crystallizing in the cubic Iad space group with a = b = c = 12.00680(5) Å. Barium (Ba) atoms occupy the Y site and silicon (Si) atoms occupy the Al site in the AlO4 tetrahedrons. An expanded study on Y2MAl4SiO12 (M = Ba, Ca, Mg, Sr) series shows a cation size (of M)-dependent phase formation behavior. The lattice stability can be related with the M type in the M–Si pair and substitution level of M–Si for Y–Al. Doping Ce3+ into Y2BaAl4SiO12 yields bright yellow photoluminescence peaking at around 537 nm upon excitation by 460 nm light. The emission intensity is quite stable against thermal quenching whereas the peak wavelength shows a slight red-shift as the ambient temperature increases. The crystallization behavior of Y2BaAl4SiO12 is suggested as melt-assisted precipitation/growth based on cathodoluminescence analysis. The highly crystalline nature of the microcrystals explains the stable emission against thermal quenching. This study may provide an inspiring insight into preparing phosphor with new morphology-structure of “microcrystal-glass powder phosphor”, which distinguishes it from conventional “ceramic powder phosphor” or “single-crystal phosphor”.

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Держатели документа:
National Laboratory of Mineral Materials, Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing, China
Sialon Group, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan
College of Optical and Electronic Technology, China Jiliang University, Hangzhou, China
Semiconductor Device Materials Group, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Japan
Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Department of Physics, Far Eastern State Transport University, Khabarovsk, Russian Federation
Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing, China
College of Materials, Xiamen University, Xiamen, China

Доп.точки доступа:
Ji, H.; Wang, L.; Cho, Y.; Hirosaki, N.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Xia, Z.; Huang, Z.; Xie, R.-J.
}
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17.


    Myagkov, V. G.
    Multiple self-propagating high-temperature synthesis and solid-phase reactions in thin films / V. G. Myagkov, L. E. Bykova, G. N. Bondarenko // J. Exp. Theor. Phys. - 1999. - Vol. 88, Is. 5. - P. 963-967, DOI 10.1134/1.558878. - Cited References: 28 . - ISSN 1063-7761
РУБ Physics, Multidisciplinary
Рубрики:
DENSE BRANCHING MORPHOLOGY
   SINGLE-CRYSTAL GROWTH

   PATTERN-FORMATION

   AL-GE

   CHEMICAL-REACTIONS

   CRYSTALLIZATION

   SEPARATION

   HEAT

Аннотация: A variety of self-propagating high-temperature synthesis in thin films has been found and investigated. This modification, called multiple self-propagating high-temperature synthesis, occurs in the solid phase and is a reversible phase transition. Multiple self-propagating high-temperature synthesis is similar in many respects to a metal-insulator phase transition. It is shown that for eutectic systems it is equivalent to a repeated transition through the eutectic temperature of bulk samples. It is inferred that multiple self-propagating high-temperature synthesis in bilayer films is governed by phase separation mechanisms that take place during eutectic solidification and eutectoid decomposition. (C) 1999 American Institute of Physics. [S1063-7761(99)01705-9].

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
Russian Acad Sci, Inst Chem & Chem Technol, Siberian Branch, Krasnoyarsk 660036, Russia
ИФ СО РАН
ИХХТ СО РАН

Доп.точки доступа:
Bykova, L. E.; Быкова, Людмила Евгеньевна; Bondarenko, G. N.; Бондаренко, Галина Николаевна; Мягков, Виктор Григорьевич
}
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18.


   
    Mossbauer magnetization and resistivity studies of Fe1.91V0.09BO4 / N. V. Kazak [et al.] // Physica B. - 2005. - Vol. 359: International Conference on Strongly Correlated Electron Systems (SCES 04) (JUL 26-30, 2004, Karlsruhe, GERMANY). - P. 1324-1326, DOI 10.1016/j.physb.2005.01.396. - Cited References: 8 . - ISSN 0921-4526
РУБ Physics, Condensed Matter
Рубрики:
FE2OBO3
Кл.слова (ненормированные):
Mott-hubbard system -- magnetism -- new materials -- Magnetism -- Mott-hubbard system -- New materials -- Crystallization -- Crystallography -- Fermi level -- Ferrimagnetism -- Magnetism -- Magnetization -- Mossbauer spectroscopy -- Phase transitions -- Single crystals -- X ray diffraction analysis -- Charge ordering -- Electron-electron interactions -- Mott-hubbard system -- New materials -- Iron compounds
Аннотация: Single crystals of Fe1.91V0.09BO4 were prepared by spontaneous crystallization using a solution melt technology for the first time and its structure, electronic and magnetic properties were investigated by X-ray diffraction, Mossbauer spectroscopy, magnetization and electrical measurements. Room-temperature Mossbauer measurements indicate that "localized" (Fe2+, Fe3+) and "delocalized" (Fe2.5+) states in ratio 0.31:0.345:0.345 distributed over two crystallographically non-equivalent positions exist. The results of magnetic measurements show that warwickite is a P-type ferrimagnet below T = 130 K. Resistivity measurements show a variable-range-hopping when electron-electron interactions cause a soft Coulomb gap in the density of states at the Fermi energy. (c) 2005 Elsevier B.V. All rights reserved.

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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Krasnoyarsk State Tech Univ, Krasnoyarsk 660074, Russia
ИФ СО РАН
LV Kirensky Institute of Physics, Siberian Branch of RAS, 660036 Krasnoyarsk, Russian Federation
Krasnoyarsk State Tech. University, 660074 Krasnoyarsk, Russian Federation

Доп.точки доступа:
Kazak, N. V.; Казак, Наталья Валерьевна; Balaev, A. D.; Балаев, Александр Дмитриевич; Ivanova, N. B.; Иванова, Наталья Борисовна; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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19.


   
    Magnetic properties and the metal-insulator transition in GdXMn1-XS solid solutions / O. B. Romanova [et al.] // Solid State Commun. - 2010. - Vol. 150, Is. 13-14. - P. 602-604, DOI 10.1016/j.ssc.2009.12.042. - Cited References: 13. - This study was supported by the Russian Foundation for Basic Research project No. 09-02-00554_a; No. 09-02-92001-NNS_a; No. 08-02-90031 Bel_a and Belarus Foundation for Basic Research project No. F04-182; ADTF "Development of scientific potential of the higher school" No. 2.1.1/401. . - ISSN 0038-1098
РУБ Physics, Condensed Matter

Кл.слова (ненормированные):
Insulator -- Metals -- Crystal growth -- Phase transitions -- Insulator -- Metals -- Crystal growth -- Phase transitions -- Insulator -- Metals -- Antiferromagnetic semiconductors -- Crystal growth -- Cubic lattice -- Metal-insulator phase transition -- Orders of magnitude -- P-type -- Temperature range -- Thermoelectric properties -- Thermopowers -- Antiferromagnetic materials -- Antiferromagnetism -- Crystal growth -- Crystallization -- Electric properties -- Gadolinium -- Grain boundaries -- Magnetic fields -- Magnetic properties -- Manganese -- Manganese compounds -- Metal insulator boundaries -- Metals -- Semiconductor growth -- Semiconductor insulator boundaries -- Sodium chloride -- Solid solutions -- Solidification -- Metal insulator transition
Аннотация: The structural, magnetic, electrical, and thermoelectric properties of GdXMn1-XS (0.01 <= X <= 0.3) solid solutions synthesized for the first time on the basis of alpha-MnS have been studied experimentally in the temperature range 77-1000 K in magnetic fields up to 10 kOe. The synthesized samples are antiferromagnetic semiconductors with an NaCl-type cubic lattice typical of a-MnS. Both concentration (X-c = 0.3) and temperature (T-c = 450 K) metal-insulator phase transitions have been observed. The concentration metal-insulator transition is accompanied by a decrease in resistivity and thermopower by twelve and two orders of magnitude, respectively, with the change in conductivity from p-type to n-type. (C) 2010 Elsevier Ltd. All rights reserved.

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Держатели документа:
[Romanova, O. B.
Ryabinkina, L. I.
Velikanov, D. A.
Balaev, D. A.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Sokolov, V. V.
Pichugin, A. Yu.] Russian Acad Sci, Inst Inorgan Chem, Siberian Branch, Novosibirsk 630090, Russia
[Galyas, A. I.
Demidenko, O. F.
Makovetskii, G. I.
Yanushkevich, K. I.] Natl Acad Sci Belarus, GO NPTs Mat Sci Ctr, Minsk 220072, Byelarus
ИФ СО РАН
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, 660036 Krasnoyarsk, Russian Federation
Institute of Inorganic Chemistry, Russian Academy of Sciences, Siberian Branch, 630090 Novosibirsk, Russian Federation
GO NPTs Materials Science Center, National Academy of Sciences of Belarus, 220072 Minsk, Belarus

Доп.точки доступа:
Romanova, O. B.; Романова, Оксана Борисовна; Ryabinkina, L. I.; Рябинкина, Людмила Ивановна; Sokolov, V. V.; Pichugin, A. Y.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Balaev, D. A.; Балаев, Дмитрий Александрович; Galyas, A. I.; Demidenko, O. F.; Makovetskii, G. I.; Yanushkevich, K. I.
}
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20.


   
    Magnetic nanoparticles in borate glasses: Identification and sizing / I. S. Edelman [et al.] // International Conference on Optimization of Electrical and Electronic Equipment (OPTIM 2014) : IEEE Computer Society, 2014. - P. 95-104, DOI 10.1109/OPTIM.2014.6850939. - Cited References: 60 . - ISBN 978-1-4799-5183-3
Рубрики:
Engineering, Electrical and Electronic
Кл.слова (ненормированные):
SUPERPARAMAGNETIC RESONANCE -- FERROMAGNETIC-RESONANCE -- FERRITE NANOPARTICLES -- OXIDE NANOPARTICLES -- FARADAY-ROTATION -- CERAMICS -- IRON -- CRYSTALLIZATION -- ANISOTROPY -- PARTICLES
Аннотация: Heat treatment of borate glasses co-doped with low contents of iron and larger radius elements: Dy, Tb, Gd, Ho, Er, Y and Bi results in formation of magnetic nanoparticles, radically changing their physical properties. Transmission electron microscopy and synchrotron radiation-based techniques: XRD, EXAFS, XANES and SAXS, show a broad distribution of nanoparticle sizes with characteristic depending on the treatment regime; a crystalline structure of these nanoparticles is detected in heat treated samples. Magnetic circular dichroism (MCD) studies of samples subjected to heat treatment as well as of maghemite, magnetite and iron garnet allow to unambiguously assigning the nanoparticle structure to maghemite. Different features observed in the MCD spectra are related to different electron transitions in Fe3+ ions gathered in the nanoparticles. Variable-temperature electron magnetic resonance (EMR) studies confirm the formation of magnetic nanoparticles and the identification of their nature. Computer simulations of the EMR spectra corroborate the broad distribution of nanoparticle sizes found by 'direct' techniques. © 2014 IEEE.

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Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Ivanova, O. S.; Иванова, Оксана Станиславовна; Zubavichus, Y.; Trofimova, N. N.; Zaikovskiy, V. I.; Artemenko, A.; Curely, J.; Kliava, J.; Russian Foundation for Basic Research; Russian Foundation for Basic Research; International Conference on Optimization of Electrical and Electronic Equipmen (22 May - 24 May 2014 ; Bran, Romania)
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