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1.
ACOUSTIC PROPERTIES OF
TERBIUM
FERRITE
-GARNET AT LOW-TEMPERATURES / O. P. KVASHNINA [и др.]> // Fiz. Tverd. Tela. - 1984. -
Vol. 26
,
Is. 8
. - P. 2408-2410. - Cited References: 5 . - ISSN 0367-3294
РУБ
Physics, Condensed Matter
WOS
Доп.точки доступа:
KVASHNINA, O. P.; KAPITONOV, A. M.; SMOKOTIN, E. M.; TITOVA, A. G.
}
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2.
Actual composition and
structure of manganese
ferrite
nanoparticles dispersed in the borate glass matrix / I. G. Vasilyeva [et al.]> // Doklady Chemistry. - 2005. -
Vol. 401
,
Is. 1-3
. - P. 47-50,
DOI
10.1007/s10631-005-0029-y . - ISSN 0012-5008
Кл.слова (ненормированные):
boric acid
--
ferrite
--
glass
--
manganese derivative
--
analytic method
--
article
--
chemical composition
--
chemical structure
--
nanoparticle
--
stoichiometry
--
structure analysis
--
transmission electron microscopy
--
X ray analysis
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Публикация на русском языке
Реальный состав и структура наночастиц феррита марганца, диспергированных в матрице боратных стекол [Текст] / И. Г. Васильева [и др.] // Доклады Академии наук. - 2005. - Т. 401 № 3. - С. 349-352
Держатели документа:
Nikolaev Inst. of Inorg. Chemistry, Siberian Division, Russian Academy of Sciences, pr. akademika Lavrent'eva 3, Novosibirsk, 630090, Russian Federation
Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, pr. akademika Lavrent'eva 5, Novosibirsk, 630090, Russian Federation
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
All-Russia Research Center, Vavilov State Optical Institute, ul. Babushkina 36/1, St. Petersburg, 192371, Russian Federation
Доп.точки доступа:
Vasilyeva, I. G.; Dovlitova, L. S.; Zaikovskii, V. I.; Malakhov, V. V.; Edel'man, I. S.; Эдельман, Ирина Самсоновна; Stepanov, A. S.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич
}
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3.
An effective method
of magnetic hyperthermia based on the ferromagnetic resonance phenomenon / S. V. Stolyar, O. A. Li, E. D. Nikolaeva [et al.]> // Phys. Met. Metallogr. - 2023. -
Vol. 124
,
Is. 2
. - P. 174-180,
DOI
10.1134/S0031918X22601834. - Cited References: 15. - This study was supported by grant no. 22-14-20020 from the Russian Science Foundation and the Krasnoyarsk Regional Fund for Support of Scientific and Technological Activities. The authors are grateful to the Krasnoyarsk Regional Center for Collective Use at Federal Research Center Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, for providing their research facilities . - ISSN 0031-918X. - ISSN 1555-6190
Кл.слова (ненормированные):
ferromagnetic resonance
--
cobalt
ferrite
--
nickel
ferrite
--
magnetic hyperthermia
Аннотация:
Nickel and cobalt
ferrite
nanoparticles have been synthesized using the chemical precipitation method; the nanoparticle sizes were found to be 63 ± 22 and 26 ± 4 nm, respectively. The static hysteresis loops and Mossbauer spectra have been measured. It is shown that cobalt
ferrite
powders are magnetically harder than nickel
ferrite
powders. Ferromagnetic resonance (FMR) curves have been studied. It is found that the FMR absorption for cobalt
ferrite
is observed at room temperature and above. The time dependences of the nanoparticle warm-up under FMR conditions have been measured. The maximum temperature changes for nickel
ferrite
and cobalt
ferrite
particles are 8 and 11 K, respectively. Using the example of cobalt
ferrite
powder, the possibility of effectively heating of particles in the FMR mode in their own field without using a DC magnetic field source is shown. The observed effect can be used in magnetic hyperthermia.
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Публикация на русском языке
Эффективный способ магнитной гипертермии, основанный на явлении ферромагнитного резонанса [Текст] / С. В. Столяр, О. А. Ли, Е. Д. Николаева [и др.] // Физ. металлов и металловед. - 2023. - Т. 124 № 2. - С. 182-189
Держатели документа:
Federal Research Center, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Siberian Federal University, 660041, Krasnoyarsk, Russia
Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Доп.точки доступа:
Stolyar, S. V.; Li, O. A.; Nikolaeva, E. D.; Vorotynov, A. M.; Воротынов, Александр Михайлович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Bayukov, O. A.; Баюков, Олег Артемьевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович; P’yankov, V. F.; Volochaev, M. N.; Волочаев, Михаил Николаевич
}
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4.
Balaev, A. D.
Study of magnetic static properties of beta-type potassium
ferrite
monocrystals / A. D. Balaev, V. N. Vasilev, E. N. Matveiko> // Fiz. Tverd. Tela. - 1996. -
Vol. 38
,
Is. 11
. - P. 3427-3429. - Cited References: 5 . - ISSN 0367-3294
РУБ
Physics, Condensed Matter
WOS
Доп.точки доступа:
Vasilev, V. N.; Matveiko, E. N.
}
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5.
Cobalt
ferrite
nanoparticles
in a mesoporous silicon dioxide matrix / S. V. Komogortsev [et al.]> // Tech. Phys. Lett. - 2009. -
Vol. 35
,
Is. 10
. - P. 882-884,
DOI
10.1134/S1063785009100022. - Cited References: 10. - This study was supported in part by the Federal Program "Development of the Scientific Potential of Higher Education" (project no. RNP. 2.1.1/2584) and jointly by the Krasnoyarsk Regional Science Foundation and the Russian Foundation for Basic Research (project nos. r-Enisei-a 03-07-96803 and 09-02-98002-r_sibir'_a). . - ISSN 1063-7850
РУБ
Physics, Applied
Рубрики:
MAGNETIC-PROPERTIES
NANOSIZED COFE2O4
ANISOTROPY
POWDERS
CURVES
Аннотация:
We have studied magnetic nanoparticles of cobalt
ferrite
obtained by the extraction-pyrolysis method in a mesoporous silicon dioxide (MSM-41) molecular sieve matrix. The X-ray diffraction data show evidence for the formation of CoFe(2)O(4) particles with a coherent scattering domain size of similar to 40 nm. Measurements of the magnetization curves showed that powders consisting of these nanoparticles are magnetically hard materials with a coercive field of H (c)(4.2 K) = 9.0 kOe and H (c)(300 K) = 1.8 kOe and a reduced remanent magnetization of M (r)/M (s)(4.2 K) = 0.83 and M (r)/M (s)(300 K) = 0.49. The shape of the low-temperature (4.2 K) magnetization curves is adequately described in terms of the Stoner-Wohlfarth model for randomly oriented single-domain particles with a cubic magnetic anisotropy.
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Держатели документа:
[Komogortsev, S. V.] Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia
Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia
Siberian State Technol Univ, Krasnoyarsk 660049, Russia
ИФ СО РАН
ИХХТ СО РАН
Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk 660041, Russian Federation
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Siberian State Technological University, Krasnoyarsk 660049, Russian Federation
Доп.точки доступа:
Komogortsev, S. V.; Комогорцев, Сергей Викторович; Patrusheva, T. N.; Патрушева, Тамара Николаевна; Balaev, D. A.; Балаев, Дмитрий Александрович; Denisova, E. A.; Денисова, Елена Александровна; Ponomarenko, I. V.; Development of the Scientific Potential of Higher Education [RNP. 2.1.1/2584]; Krasnoyarsk Regional Science Foundation; Russian Foundation for Basic Research [r-Enisei-a 03-07-96803, 09-02-98002-r_sibir'_a]
}
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6.
Coexistence of the
electric polarization and conductive current in the bismuth–neodymium
ferrite
garnet films / S. S. Aplesnin, A. N. Masyugin, M. N. Volochaev, T. Ishibashi> // J. Mater. Sci. Mater. Electron. - 2021. -
Vol. 32
. - P. 3766-3781,
DOI
10.1007/s10854-020-05121-9. - Cited References: 42 . - ISSN 0957-4522
Кл.слова (ненормированные):
Bismuth
--
Bismuth compounds
--
Dielectric materials
--
Epitaxial films
--
Ferroelectricity
--
Gallium compounds
--
Garnets
--
Hysteresis
--
Iron compounds
--
Neodymium
--
Neodymium compounds
--
Piezoelectricity
--
Single crystals
--
Substrates
Аннотация:
The Nd1Bi2Fe5O12/Nd2Bi1Fe4Ga1O12 polycrystalline films on the glass substrate and the Nd0.5Bi2.5Fe5O12 epitaxial films on the single-crystal gadolinium gallium garnet substrate have been investigated by impedance and dielectric spectroscopy. The inductive contribution to the impedance and two relaxation channels related to ferroelectric domains and migration polarization have been established. The magnetocapacitance and magnetoimpedance have been determined. The conductive and polarization currents and the phase difference between them for the films of two types have been determined. The critical temperatures of the polarization disappearance and hysteresis I–V have been found. A model of the polarization caused by the piezoelectric effect and flexoelectric interaction has been proposed. I–V hysteresis is explained by the presence of ferroelectric domains near the interface and is associated with the hysteresis of the electric polarization.
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Держатели документа:
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation
Department of Materials Science and Technology, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
Доп.точки доступа:
Aplesnin, S. S.; Masyugin, A. N.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Ishibashi, T.
}
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7.
Copper
ferrite
nanoparticles
synthesized using anion-exchange Resin: Influence of synthesis parameters on the cubic phase stability / S. Saikova, A. Pavlikov, D. Karpov [et al.]> // Materials. - 2023. -
Vol. 16
,
Is. 6
. - Ст. 2318,
DOI
10.3390/ma16062318. - Cited References: 67. - The Russian team acknowledges the support of the Russian Science Foundation (Project 22-73-10047) . - ISSN 1996-1944
Кл.слова (ненормированные):
copper
ferrite
--
magnetic properties
--
anion-exchange resin precipitation
--
magnetic nanoparticles
Аннотация:
Copper
ferrite
is of great interest to researchers as a material with unique magnetic, optical, catalytic, and structural properties. In particular, the magnetic properties of this material are structurally sensitive and can be tuned by changing the distribution of Cu and Fe cations in octahedral and tetrahedral positions by controlling the synthesis parameters. In this study, we propose a new, simple, and convenient method for the synthesis of copper
ferrite
nanoparticles using a strongly basic anion-exchange resin in the OH form. The effect and possible mechanism of polysaccharide addition on the elemental composition, yield, and particle size of CuFe2O4 are investigated and discussed. It is shown that anion-exchange resin precipitation leads to a mixture of unstable cubic (c-CuFe2O4) phases at standard temperature and stable tetragonal (t-CuFe2O4) phases. The effect of reaction conditions on the stability of c-CuFe2O4 is studied by temperature-dependent XRD measurements and discussed in terms of cation distribution, cooperative Jahn–Teller distortion, and Cu2+ and oxygen vacancies in the copper
ferrite
lattice. The observed differences in the values of the saturation magnetization and coercivity of the prepared samples are explained in terms of variations in the particle size and structural properties of copper
ferrite
.
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Держатели документа:
School of Non-Ferrous Metals and Material Science, Siberian Federal University, 660041 Krasnoyarsk, Russia
Institute of Chemistry and Chemical Technology, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, Akademgorodok, 660036 Krasnoyarsk, Russia
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, Akademgorodok, 660036 Krasnoyarsk, Russia
Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-751 20 Uppsala, Sweden
Доп.точки доступа:
Saikova, Svetlana; Pavlikov, Aleksandr; Karpov, Denis; Samoilo, Aleksandr; Kirik, Sergey; Volochaev, M. N.; Волочаев, Михаил Николаевич; Trofimova, Tatyana; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Kuklin, Artem
}
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8.
Dynamic remagnetisation of
CoFe2O4 nanoparticles: thermal fluctuational thawing of anisotropy / D. A. Balaev, I. S. Poperechny, A. A. Krasikov [et al.]> // J. Phys. D. - 2021. -
Vol. 54
,
Is. 27
. - Ст. 275003,
DOI
10.1088/1361-6463/abf371. - Cited References: 63. - Experimental measurements were supported by Project No. AAAA-A17-117103050081-1. I S P and Yu L R acknowledge the support of ICMM in the framework of topical task AAAAA20-120020690030-5. The numerical calculations were performed on the Uran supercomputer (Ural Branch, Russian Academy of Sciences, Ekaterinburg) . - ISSN 0022-3727. - ISSN 1361-6463
РУБ
Physics, Applied
Рубрики:
COBALT-
FERRITE
NANOPARTICLES
MAGNETIC-PROPERTIES
SIZE
COERCIVITY
Кл.слова (ненормированные):
nanoparticles
--
cobalt
ferrite
--
magnetodynamics
--
superparamagnetism
--
effective anisotropy
Аннотация:
We report a study of the magnetodynamics of cobalt
ferrite
(CoFe2O4) nanoparticles with an average diameter of ~6 nm. Hysteresis loops were measured under quasi-static conditions and in pulse fields with amplitudes H0 of up to 130 kOe and for durations τP of 8 and 16 ms. The growth of coercivity Hc observed with an increase in the magnetic field variation rate dH/dt (determined by the values of H0 and τP) and the reduction of Hc with temperature is ascribed to the superparamagnetic effect. The proposed theoretical model explains the observed dependences fairly well. Notably, the effective magnetic anisotropy constant obtained exceeds the value for bulk crystals and might be indicative of the contribution of surface magnetic anisotropy.
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Держатели документа:
Russian Acad Sci, Inst Phys, Siberian Branch, Krasnoyarsk 660000, Russia.
Russian Acad Sci, Inst Continuous Media Mech, Ural Branch, Perm 614068, Russia.
Perm State Natl Res Univ, Dept Phase Transit Phys, Perm 614990, Russia.
Russian Acad Sci, Boreskov Inst Catalysis, Siberian Branch, Novosibirsk 630090, Russia.
Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Poperechny, I. S.; Krasikov, A. A.; Красиков, Александр Александрович; Semenov, S. V.; Семёнов, Сергей Васильевич; Popkov, S. I.; Попков, Сергей Иванович; Knyazev, Yu. V.; Князев, Юрий Владимирович; Kirillov, V. L.; Yakushkin, S. S.; Martyanov, O. N.; Raikher, Y. L.; [AAAA-A17-117103050081-1]; [AAAAA20-120020690030-5]
}
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9.
Effect of oxygen
nonstoichiometry on electrical conductivity and thermopower of Gd0.2Sr0.8FeO3-δ
ferrite
samples / V. Dudnikov [et al.]> // Materials. - 2019. -
Vol. 12
,
Is. 1
. - Ст. 74,
DOI
10.3390/ma12010074. - Cited References: 24 . - ISSN 1996-1944
Кл.слова (ненормированные):
Rare-earth-substituted cobalt oxides
--
Stability
--
Thermoelectric properties
Аннотация:
The behavior of the resistivity and thermopower of the Gd0.2Sr0.8FeO3−δ
ferrite
samples with a perovskite structure and the sample stability in an inert gas atmosphere in the temperature range of 300–800 K have been examined. It has been established that, in the investigated temperature range, the thermoelectric properties in the heating‒cooling mode are stabilized at δ ≥ 0.21. It is shown that the temperature dependencies of the resistivity obtained at different δ values obey the activation law up to the temperatures corresponding to the intense oxygen removal from a sample. The semiconductor‒semiconductor electronic transitions accompanied by a decrease in the activation energy have been observed with increasing temperature. It is demonstrated that the maximum thermoelectric power factor of 0.1 µW/(cm·K2) corresponds to a temperature of T = 800 K.
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Держатели документа:
Kirensky Institute of Physics, Federal Research Center Krasnoyarsk Scientific Center, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Chemistry and Chemical Technology, Federal Research Center Krasnoyarsk Scientific Center, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation
Ioffe Institute, St. Petersburg, 194021, Russian Federation
Доп.точки доступа:
Dudnikov, V. A.; Дудников, Вячеслав Анатольевич; Orlov, Yu. S.; Орлов, Юрий Сергеевич; Fedorov, A. S.; Федоров, Александр Семенович; Solovyov, L.; Vereshchagin, S.; Burkov, A. T.; Novikov, S.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
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10.
Ferrite
and high-temperature
superconductor targets for sputtering / A. A. Lepeshev [et al.]> // Tech. Phys. - 2000. -
Vol. 45
,
Is. 5
. - P. 653-655,
DOI
10.1134/1.1259696. - Cited References: 6 . - ISSN 1063-7842
РУБ
Physics, Applied
Аннотация:
A method is described of preparing targets for sputtering, which involves the use of plasma deposition of respective powders onto a cooled metal plate. It is demonstrated that the use of plasma technology enables one to produce, in a controlled atmosphere, intricately shaped ceramic targets characterized by a highly uniform composition and by reliable mechanical and thermal contact of the resultant coating with the holder plate. Experiments are performed on the sputtering of targets to prepare polycrystalline
ferrite
films for magnetooptical applications and epitaxial films of high-temperature superconductors. (C) 2000 MAIK "Nauka/Interperiodica".
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Держатели документа:
Siberian Aerosp Acad, Krasnoyarsk 660014, Russia
Russian Acad Sci, Siberian Div, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Доп.точки доступа:
Lepeshev, A. A.; Saunin, V. N.; Telegin, S. V.; Polyakova, K. P.; Полякова, Клавдия Павловна; Seredkin, V. A.; Середкин, Виталий Александрович; Polsky, A. I.
}
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11.
Ferrite
nanoparticles in
borate glass matrix: structure and magnetic properties / N. N. Trofimova [et al.]> //
Moscow Int. Symp. on Magnet. (MISM-2014) : Book of abstracts. - 2014. - Ст. 2PO-I1-2. - P. 745 . - ISBN 978-5-91978-025-0
Book of abstracts
Доп.точки доступа:
Trofimova, N. N.; Zubavichus, Y. V.; Edelman, I. S.; Эдельман, Ирина Самсоновна; Ivanova, O. S.; Иванова, Оксана Станиславовна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Petrakovskaya, E. A.; Петраковская, Элеонора Анатольевна; Zaikovskii, V. I.; Московский государственный университет им. М.В. Ломоносова; Moscow International Symposium on Magnetism(6 ; 2014 ; 29 June-3 July ; Moscow)
}
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12.
Formation and evolution
of magnetic nanoparticles in borate glass simultaneously doped with Fe and Mn oxides / J. . Kliava [et al.]> // J. Appl. Phys. - 2008. -
Vol. 104
,
Is. 10
. - Ст. 103917,
DOI
10.1063/1.3021289. - Cited References: 37. - A financial support from the Russian Foundation for Basic Research (RFBR)-CNRS (Grant No. 07-02-92174) is highly appreciated. R. Ivantsov is grateful to the Russian Science Support Foundation. Y. Yeshurun acknowledges the support of the Israel Scienc Foundation (ISF). . - ISSN 0021-8979
РУБ
Physics, Applied
Рубрики:
COBALT
FERRITE
PARTICLES
SUPERPARAMAGNETIC RESONANCE
GAMMA-FE2O3 NANOPARTICLES
MATRIX
SIZE
SYSTEMS
Кл.слова (ненормированные):
aluminium compounds
--
borate glasses
--
coercive force
--
Faraday effect
--
heat treatment
--
iron compounds
--
magnetic hysteresis
--
magnetic particles
--
magnetic susceptibility
--
manganese compounds
--
Mossbauer effect
--
nanoparticles
--
paramagnetic materials
--
potassium compounds
--
remanence
--
superparamagnetism
--
transmission electron microscopy
--
X-ray chemical analysis
--
Atomic spectroscopy
--
Auger electron spectroscopy
--
Crystal structure
--
Electric relays
--
Electronic medical equipment
--
Ferrite
--
Ferrites
--
Glass
--
Heat treatment
--
Hysteresis
--
Hysteresis loops
--
Magnetic properties
--
Magnetic resonance measurement
--
Magnetic susceptibility
--
Magnetism
--
Manganese
--
Manganese compounds
--
Molybdenum
--
Nanoparticles
--
Optical properties
--
Ozone water treatment
--
Polydispersity
--
Superparamagnetism
--
Borate glasses
--
Concentration ratios
--
Electron magnetic resonances
--
Emr spectrums
--
Experimental techniques
--
Faraday rotations
--
Glass compositions
--
Glass matrixes
--
Glass preparations
--
Magnetic measurements
--
Magnetic nano particles
--
Magnetic orders
--
Magnetically ordered systems
--
Magneto-optical properties
--
Manganese ferrites
--
Mean diameters
--
Mn oxides
--
Phase states
--
Polydisperse nanoparticles
--
Remnant magnetizations
--
Ssbauer spectroscopies
--
Superparamagnetic
--
Superparamagnetic states
--
Thermal treatments
--
Variable temperatures
--
Magnetic materials
Аннотация:
Evolution of the phase state of paramagnetic additions at various stages of synthesis and subsequent thermal treatment of glasses of the system Al(2)O(3)-K(2)O-B(2)O(3) simultaneously doped with Fe(2)O(3) and MnO is studied by means of a combination of experimental techniques: Faraday rotation (FR), electron magnetic resonance (EMR), transmission electron microscopy (TEM), Mossbauer spectroscopy, and magnetic measurements. Both FR and EMR show that magnetically ordered clusters occur already at the first stage of the glass preparation. In particular, for the ratio of the Fe and Mn oxides in the charge close to 3:2, fine magnetic nanoparticles are formed with characteristics similar to those of manganese
ferrite
. By computer simulating the EMR spectra at variable temperatures, a superparamagnetic nature of these nanoparticles is confirmed and their mean diameter is estimated as approximately 3.2 nm. In the thermally treated glasses larger magnetic nanoparticles are formed, giving rise to FR spectra, characteristic of magnetically ordered systems, and the EMR spectra different from those in as-prepared glasses but also showing superparamagnetic narrowing. The Mossbauer spectroscopy corroborates the manganese
ferrite
structure of the nanoparticles and indicates their coexistence in the ferrimagnetic and superparamagnetic states. The TEM shows the presence of polydisperse nanoparticles on the background of the glass matrix, and electron diffraction of a selected region containing larger particles indicates a crystal structure close to that of MnFe(2)O(4). Energy-dispersive atomic x-ray spectra confirm that the major part of Fe and Mn introduced to the glass composition is gathered in the particles, with the concentration ratio close to 2:1, characteristic of bulk MnFe(2)O(4). Magnetic hysteresis loops of samples subjected to an additional thermal treatment demonstrate a strong increase in the coercive force, remnant magnetization, and high-field magnetic susceptibility with temperature decrease. The consistent results obtained using various techniques demonstrate that the formation of nanoparticles with characteristics close to those of MnFe(2)O(4) confers to these glasses magnetic and magneto-optical properties typical of substances possessing magnetic order.
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Держатели документа:
[Kliava, J.] Univ Bordeaux 1, CNRS, UMR 5798, CPMOH, F-33405 Talence, France
[Edelman, I.
Ivanova, O.
Ivantsov, R.
Bayukov, O.
Petrakovskaja, E.
Stepanov, S.] RAS, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Zaikovskiy, V.] RAS, Siberian Branch, Boreskov Inst Catalysis, Novosibirsk 630090, Russia
[Bruckental, I.
Yeshurun, Y.] Bar Ilan Univ, Dept Phys, IL-52900 Ramat Gan, Israel
[Stepanov, S.] SI Vavilov State Opt Inst, St Petersburg 199034, Russia
ИФ СО РАН
CPMOH, Universit? Bordeaux, 1-CNRS UMR 5798, 33405 Talence Cedex, France
Kirensky Institute of Physics, Siberian Branch of RAS, 660036 Krasnoyarsk, Russian Federation
Boreskov Institute of Catalysis, Siberian Branch, RAS, 630090 Novosibirsk, Russian Federation
Department of Physics, Bar-Ilan University, Ramat-Gan 52900, Israel
S. I. Vavilov State Optical Institute, St. Petersburg 199034, Russian Federation
Доп.точки доступа:
Kliava, J.; Edelman, I. S.; Эдельман, Ирина Самсоновна; Ivanova, O. S.; Иванова, Оксана Станиславовна; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Petrakovskaja, E. A.; Петраковская, Элеонора Анатольевна; Zaikovskiy, V.; Bruckental, I.; Yeshurun, Y.; Stepanov, S.
}
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13.
Hybrid nanoparticles based
on cobalt
ferrite
and gold: Preparation and characterization / S. Saikova, A. Pavlikov, T. Trofimova [et al.]> // Metals. - 2021. -
Vol. 11
,
Is. 5
. - Ст. 705,
DOI
10.3390/met11050705. - Cited References: 74 . - ISSN 2075-4701
Перевод заглавия:
Гибридные наночастицы, основанные на феррите кобальта и золоте: получение и ислледование
Кл.слова (ненормированные):
CoFe2O4/Au nanoparticles
--
Toxicity
--
X-ray photoelectron spectroscopy
--
Anion-exchange resin precipitation
--
Hybrid nanoparticles
--
Synthesis
--
Magnetic hysteresis loops
Аннотация:
During the past few decades, hybrid nanoparticles (HNPs) based on a magnetic material and gold have attracted interest for applications in catalysis, diagnostics and nanomedicine. In this paper, magnetic CoFe2O4/Au HNPs with an average particle size of 20 nm, decorated with 2 nm gold clusters, were prepared using methionine as a reducer and an anchor between CoFe2O4 and gold. The methionine was used to grow the Au clusters to a solid gold shell (up to 10 gold deposition cycles). The obtained nanoparticles (NPs) were studied by X-Ray diffraction (XRD), transmis-sion electron microscopy (TEM), Fourier-transform infrared (FT-IR) spectroscopy, X-Ray photoelectron spectroscopy (XPS) and UV-vis spectroscopy techniques. The TEM images of the obtained HNPs showed that the surface of cobalt
ferrite
was covered with gold nanoclusters, the size of which slightly increased with an increase in the number of gold deposition cycles (from 2.12 ± 0.15 nm after 1 cycle to 2.46 ± 0.13 nm after 10 cycles). The density of the Au clusters on the cobalt
ferrite
surface insignificantly decreased during repeated stages of gold deposition: 21.4 ± 2.7 Au NPs/CoFe2O4 NP after 1 cycle, 19.0 ± 1.2 after 6 cycles and 18.0 ± 1.4 after 10 cycles. The magnetic measurements showed that the obtained HNPs possessed typical ferrimagnetic behavior, which corresponds to that of CoFe2O4 nanoparticles. The toxicity evaluation of the synthesized HNPs on Chlorella vulgaris indicated that they can be applied to biomedical applications such as magnetic hyperthermia, photothermal therapy, drug delivery, bioimaging and biosensing.
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Держатели документа:
School of Non-Ferrous Metals and Material Science, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Chemistry and Chemical Technology, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, Krasnoyarsk, 660036, Russian Federation
Institute of Agroecological Technologies, Krasnoyarsk State Agrarian University, Krasnoyarsk, 660049, Russian Federation
Kirensky Institute of Physics, Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Saikova, S.; Pavlikov, A.; Trofimova, T.; Mikhlin, Y.; Karpov, D.; Asanova, A.; Grigoriev, Y.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Samoilo, A.; Zharkov, S. M.; Жарков, Сергей Михайлович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич
}
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14.
Improving corrosion resistance
of Cu-Al-based anodes in KF-AlF3-Al2O3 melts / S. K. Padamata, A. Yasinskiy, A. Shabanov [et al.]> // Trans. Nonferrous Met. Soc. China. - 2022. -
Vol. 32
,
Is. 1
. - P. 354-363,
DOI
10.1016/S1003-6326(22)65800-X. - Cited References: 24. - The work is performed as a part of the State Assignment for the Science of Siberian Federal University, Russia (No. FSRZ-2020-0013) . Use of Krasnoyarsk Regional Center of Research Equipment of Federal Research Center "Krasnoyarsk Science Center SB RAS" is acknowledged . - ISSN 1003-6326. - ISSN 2210-3384
РУБ
Metallurgy & Metallurgical Engineering
Рубрики:
NI-FE
ALUMINUM ELECTROLYSIS
INERT ANODES
NICKEL
FERRITE
BEHAVIOR
Кл.слова (ненормированные):
inert anodes
--
potassium cryolite
--
Cu-Al alloys
--
corrosion
--
aluminium electrolysis
--
oxygen-evolving electrodes
Аннотация:
The anodic behaviour of pre-oxidised and non-oxidised Cu−Al-based anodes (Cu−10Al and Cu−9.8Al−2Mn) in KF−AlF3−Al2O3 melts was studied through galvanostatic and potentiodynamic polarization techniques. The alloy compositions were oxidised for a short-term (8 h) at 700 °C, followed by galvanostatic polarization for 1 h at 800 °C with an applied current density of 0.4 A/cm2. The potentiodynamic curves were recorded with a sweep rate of 0.01 V/s. XRD analysis was conducted on frozen melt samples collected on the surface of the anode, and SEM observation was performed on the anode after the experiment to study the phases of the scales formed on the alloys. All the anode materials had a steady potential between 2.30 and 2.50 V(vs Al/AlF3). The corrosion rates of the anodes were calculated from the data acquired through potentiodynamic polarization. It was seen that pre-oxidised anodes possess a low corrosion rate compared to those without pre-oxidation treatment.
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Держатели документа:
Siberian Fed Univ, Lab Phys & Chem Met Proc & Mat, Krasnoyarsk, Russia.
Krasnoyarsk Sci Ctr SB RAS, Lab Mol Spect, Krasnoyarsk, Russia.
Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China.
Доп.точки доступа:
Padamata, Sai Krishna; Yasinskiy, A.; Shabanov, A. V.; Шабанов, Александр Васильевич; Bermeshev, T.; Yang, Y. J.; Wang, Z. W.; Cao, D.; Polyakov, P.; State Assignment for the Science of Siberian Federal University, Russia [FSRZ-2020-0013]
}
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15.
Influence of the
substrate on the magnetoresistance of bismuth garnet
ferrite
substitute by rare earth / A. N. Masyugin [et al.]> //
Euro-asian symposium "Trends in magnetism" (EASTMAG-2019) : Book of abstracts / чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. -
Vol. 1
. - Ст. E.P14. - P. 444-445. - Cited References: 4. - The reported study was funded by Krasnoyarsk Regional Fund of Science according to the participation in the event/internship: The VII Euro-Asian Symposium “Trends in Magnetism” (EASTMAG-2019) . - ISBN 978-5-9500855-7-4
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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, Russia
Department of Materials Science and Technology, Nagaoka University of Technology, Nagaoka, Niigata, Japan
Доп.точки доступа:
Ovchinnikov, S. G. \чл. конс. ком.\; Овчинников, Сергей Геннадьевич; Volkov, N. V. \чл. конс. ком.\; Волков, Никита Валентинович; Dzebisashvili, D. M. \чл. прогр. ком.\; Дзебисашвили, Дмитрий Михайлович; Masyugin, A. N.; Aplesnin, S. S.; Аплеснин, Сергей Степанович; Sitnikov, M. N.; Ishibashi, T.; Российская академия наук; Уральское отделение РАН; Институт физики металлов им. М. Н. Михеева Уральского отделения РАН; Уральский федеральный университет им. первого Президента России Б.Н. Ельцина; Российский фонд фундаментальных исследований; Euro-Asian Symposium "Trends in MAGnetism"(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg); "Trends in MAGnetism", Euro-Asian Symposium(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg)
Нет сведений об экземплярах (Источник в БД не найден)
}
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16.
IR-range photoinduced diode
effect in the manganese-substituted bismuth
ferrite
films / S. S. Aplesnin [et al.]> // Semicond. Sci. Technol. - 2019. -
Vol. 34
,
Is. 9
. - Ст. 095007,
DOI
10.1088/1361-6641/ab3160. - Cited References: 45. - The reported study was funded by RFBR according to the research project No 18-52-00009 Bel_ a; No 18-32-00079 mol_ a and Belarusian Foundation project No F18R-084. The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science No 18-42-240001 r_ a, to the research project: "Inversion of the sign of the components of the magnetoelectric tensor on the temperature in films of bismuth garnet
ferrite
replaced by neodymium". This work is part of the research program the state order No 3.5743.2017/6.7. . - ISSN 0268-1242. - ISSN 1361-6641
РУБ
Engineering, Electrical & Electronic + Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
POOLE-FRENKEL CONDUCTION
BIFEO3 FILMS
LIGHT
Кл.слова (ненормированные):
multiferroic
--
films
--
diode effect
--
polarization
--
I-V characteristics
--
optical absorption
Аннотация:
The photoinduced diode effect has been found in BiMnxFe1-xO3 (0 < X < 0.15) films in the near-infrared and violet spectral ranges in a wide temperature interval. The dependences of the diode effect on temperature, wavelength, and illumination power have been established. The mechanism of the ferroelectric diode has been determined using its I-V characteristics at different illumination powers, optical spectra, far-infrared absorption spectra, and electric polarization hysteresis. The interplay between the photodiode effect and conductivity mechanism has been elucidated. The model of strong Coulomb potential fluctuations and quantum well asymmetry caused by the electric polarization in the film and difference between the times of carrier thermalization and recombination of electrons and holes is proposed.
В пленках феррита висмута BiMnxFe1-xO3 (0< x < 0.15) обнаружен фотоиндуцированный диодный эффект в ближней инфракрасной и фиолетовой областях спектра в широкой области температур. Определена зависимость диодного эффекта от температуры, длины волны, мощности освещения. Механизм ферроэлектрического диода определяется из вольт-амперных характеристик при разных интенсивностях освещения, оптических спектров и спектров поглощения в дальней ИК области, гистерезиса электрической поляризации. Устанавливается связь фотодиодного эффекта с механизмом проводимости. Предложена модель сильных флуктуаций кулоновского потенциала, асимметрия квантовых ям в результате наличия электрической поляризации в пленке и отличие времен термолизации носителей тока и рекомбинации электронов и дырок.
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Держатели документа:
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk, Russia.
Siberian Fed Univ, Krasnoyarsk, Russia.
Sci Pract Mat Res Ctr NAS Belarus, Minsk, BELARUS.
Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Kretinin, V. V.; Masyugin, A. N.; Romanova, O. B.; Романова, Оксана Борисовна; Sitnikov, M. N.; Begisheva, O. B.; Galyas, A., I; Demidenko, O. F.; Yanushkevich, K., I; RFBR [18-52-00009 Bel_ a, 18-32-00079 mol_ a]; Belarusian Foundation [F18R-084]; Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [18-42-240001 r_ a]; [3.5743.2017/6.7]
}
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17.
Magnetic nanoparticles formed
in glasses co-doped with iron and larger radius elements / I. S. Edelman [et al.]> // J. Appl. Phys. - 2012. -
Vol. 112
,
Is. 8
. - Ст. 84331. - P. ,
DOI
10.1063/1.4759244. - Cited References: 65. - This work was partly supported by the Russian Foundation for Basic Research, Grant Nos. 07-02-92174 RFBR-CNRS and 11-02-00972, and President of Russia Federation Grant No NSh 1044.2012.2. A. Artemenko acknowledges financial support from the Marie Curie International Incoming Fellowship within the 7th European Community Framework Programme (EPREXINA, GA 255662). The synchrotron measurements were supported via the Russian federal Contract No. 16.552.11.7003. The authors thank K. P. Polyakova for the preparation of thin films. . - ISSN 0021-8979
РУБ
Physics, Applied
Рубрики:
SUPERPARAMAGNETIC RESONANCE
FERROMAGNETIC-RESONANCE
TEMPERATURE-DEPENDENCE
FERRITE
NANOPARTICLES
OXIDE NANOPARTICLES
FARADAY-ROTATION
CERAMICS
ANISOTROPY
PARTICLES
SPECTRA
Аннотация:
A new type of nanoparticle-containing glasses based on borate glasses co-doped with low contents of iron and larger radius elements, Dy, Tb, Gd, Ho, Er, Y, and Bi, is studied. Heat treatment of these glasses results in formation of magnetic nanoparticles, radically changing their physical properties. Transmission electron microscopy and synchrotron radiation-based techniques: x-ray diffraction, extended x-ray absorption fine structure, x-ray absorption near-edge structure, and small-angle x-ray scattering, show a broad distribution of nanoparticle sizes with characteristics 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 assign the nanoparticle structure to maghemite, independently of co-dopant nature and of heat treatment regime used. Different features observed in the MCD spectra are related to different electron transitions in Fe3+ ions gathered in the nanoparticles. The static magnetization in heat treated samples has non-linear dependence on the magnetizing field with hysteresis. Zero-field cooled magnetization curves show that at higher temperatures the nanoparticles occur in superparamagnetic state with blocking temperatures above 100 K. Below ca. 20 K, a considerable contribution to both zero field-cooled and field-cooled magnetizations occurs from diluted paramagnetic ions. Variable-temperature electron magnetic resonance (EMR) studies unambiguously show that in as-prepared glasses paramagnetic ions are in diluted state and confirm the formation of magnetic nanoparticles already at earlier stages of heat treatment. Computer simulations of the EMR spectra corroborate the broad distribution of nanoparticle sizes found by "direct" techniques as well as superparamagnetic nanoparticle behaviour demonstrated in the magnetization studies. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4759244]
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Держатели документа:
[Edelman, I.
Ivanova, O.
Ivantsov, R.
Velikanov, D.
Zabluda, V.] LV Kirensky Inst Phys SB RAS, Krasnoyarsk 660036, Russia
[Zubavichus, Y.
Veligzhanin, A.] NRC Kurchatov Inst, Moscow 123182, Russia
[Zaikovskiy, V.] Siberian Branch RAS, Boreskov Inst Catalysis, Novosibirsk 630090, Russia
[Stepanov, S.] SI Vavilov State Opt Inst, St Petersburg, Russia
[Artemenko, A.] CNRS, ICMCB, UPR 9048, F-33608 Pessac, France
[Curely, J.
Kliava, J.] Univ Bordeaux 1, CNRS, UMR 5798, LOMA, F-33405 Talence, France
Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Ivanova, O. S.; Иванова, Оксана Станиславовна; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Zabluda, V. N.; Заблуда, Владимир Николаевич; Zubavichus, Y.; Veligzhanin, A. A.; Zaikovskiy, V. I.; Stepanov, S.; Artemenko, A.; Curely, J.; Kliava, J.
}
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18.
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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19.
Magnetic properties and
morphology of
ferrite
nanoparticle dispersed in glass [Text] / I. Edelman., O. Ivanova, R. Ivantsov [et al.]> //
Moscow Int. Symp. on Magnet. (MISM-2011) : Book of abstracts. - 2011. - Ст. 23OR-B-9. - P. 281-282
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Читать в сети ИФ
Доп.точки доступа:
Edelman., I.; Ivanova, O.; Ivantsov, R.; Velikanov, D.; Zubavichus, Y.; Veligzhanin, A.; Curely, J.; Moscow International Symposium on Magnetism(5 ; 2011 ; Aug. ; 21-25 ; Moscow)
}
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20.
Magnetic properties and
morphology of manganese
ferrite
nanoparticles in glasses [Text] / I. Edelman, O. Ivanova, I. Ivantsov [et al.]> //
BaltSilica-2011 : Book of abstracts. - 2011. - P50
Материалы конференции
,
РИНЦ
,
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Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Ivanova, O. S.; Иванова, Оксана Станиславовна; Ivantsov, I. D.; Иванцов, Илья Дмитриевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Petrakovskaja, E. A.; Петраковская, Элеонора Анатольевна; Artemenko, A.; Curely, J.; Kliava, J.; Zaikovskiy, V.; Stepanov, S.; Baltic Conference on Silicate Materials(5 ; 2011 ; Oct. ; 9-13 ; Riga)
}
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