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1.


   
    From superparamagnetic to magnetically ordered state in Co-Sm-О nanocrystalline films [Text] / R. S. Iskhakov, G. I. FrolovZhigalov V.S. [et al.] // Physics of Metals and Metallogra phy. - 2006. - Vol. 102, Suppl. 1. - P. S61-S63DOI 10.1134/S0031918X06140158. - Библиогр.: 11
Аннотация: Transition of the system of Co nanoparticles from a superparamagnetic state into the region of cooperative magnetic ordering caused by effects of magnetic interaction between particles has been analyzed. The possibility of the preparation of materials with soft magnetic properties and higher electrical resistivity was shown.

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Держатели документа:
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036 Russia

Доп.точки доступа:
Iskhakov, R. S.; Исхаков, Рауф Садыкович; Frolov, G. I.; Фролов, Георгий Иванович; Zhigalov, V. S.; Жигалов, Виктор Степанович; Prokof'ev, D. E.; Burkova, L. V.; Буркова, Людмила Викторовна
}
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2.


   
    Tuning of the interparticle interactions in ultrafine ferrihydrite nanoparticles / Y. V. Knyazev, D. A. Balaev, R. N. Yaroslavtsev [et al.] // Adv. Nano Res. - 2022. - Vol. 12, Is. 6. - P. 605-616, DOI 10.12989/anr.2022.12.6.605. - Cited References: 73. - This study was supported by the Russian Science Foundation, project no. 21-72-00025 “Tuning the Magnetic Properties of Ultrafine Biocompatible Ferrihydrite Nanoparticles through Interparticle Interactions” (https://rscf.ru/project/21-72-00025/) . - ISSN 2287-237X
Кл.слова (ненормированные):
ferrihydrite ultrafine nanoparticles -- hyperfine structure -- interparticle interactions -- iron oxyhydroxide -- superparamagnetic relaxation -- surface coatings
Аннотация: We prepared two samples of ultrafine ferrihydrite (FH) nanoparticle ensembles of quite a different origin. First is the biosynthesized sample (as a product of the vital activity of bacteria Klebsiella oxytoca (hereinafter marked as FH-bact) with a natural organic coating and negligible magnetic interparticle interactions. And the second one is the chemically synthesized ferrihydrite (hereinafter FH-chem) without any coating and high level of the interparticle interactions. The interparticle magnetic interactions have been tuned by modifying the nanoparticle surface in both samples. The coating of the FH-bact sample has been partially removed by annealing at 150℃ for 24 h (hereinafter FH-annealed). The FH-chem sample, vice versa, has been coated (1.0 g) with biocompatible polysaccharide (arabinogalactan) in an ultrasonic bath for 10 min (hereinafter FH-coated). The changes in the surface properties of nanoparticles have been controlled by XPS. According to the electron microscopy data, the modification of the nanoparticle surface does not drastically change the particle shape and size. A change in the average nanoparticle size in sample FH-annealed to 3.3 nm relative to the value in the other samples (2.6 nm) has only been observed. The estimated particle coating thickness is about 0.2-0.3 nm for samples FH-bact and FH-coated and 0.1 nm for sample FH-annealed. Mössbauer and magnetization measurements are definitely shown that the drastic change in the blocking temperature is caused by the interparticle interactions. The experimental temperature dependences of the hyperfine field hf>(T) for samples FH-bact and FH-coated have not revealed the effect of interparticle interactions. Otherwise, the interparticle interaction energy Eint estimated from the hf>(T) for samples FH-chem and FH-annealed has been found to be 121kB and 259kB, respectively.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Chemistry and Chemical Technology, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Knyazev, Yu. V.; Князев, Юрий Владимирович; Balaev, D. A.; Балаев, Дмитрий Александрович; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Krasikov, A. A.; Красиков, Александр Александрович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Mikhlin, Y. L.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Stolyar, S. V.; Столяр, Сергей Викторович; Iskhakov, R. S.; Исхаков, Рауф Садыкович
}
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3.


   
    Effect of the interparticle interactions on superparamagnetic relaxation / D. A. Balaev, S. V. Stolyar, A. A. Krasikov [et al.] // VIII Euro-Asian symposium "Trends in magnetism" (EASTMAG-2022) : Book of abstracts / program com. S. G. Ovchinnikov [et al.]. - 2022. - Vol. 1, Sect. : Magnetotransport, magnetooptics and magnetophotonics. - Ст. D.O11. - P. 437-438. - Cited References: 3. - This study was supported by the Russian Science Foundation, Project No. 21-72-00025 (https://rscf.ru/project/21-72-00025/) . - ISBN 978-5-94469-051-7

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Krasnoyarsk Scientific Center, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia

Доп.точки доступа:
Ovchinnikov, S. G. \program com.\; Овчинников, Сергей Геннадьевич; Balaev, D. A.; Балаев, Дмитрий Александрович; Stolyar, S. V.; Столяр, Сергей Викторович; Krasikov, A. A.; Красиков, Александр Александрович; Bayukov, O. A.; Баюков, Олег Артемьевич; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Knyazev, Yu. V.; Князев, Юрий Владимирович; 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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4.


   
    Superparamagnetic blocking and magnetic interactions in nanoferrihydrite adsorbed on biomineralized nanorod-shaped F3S4 crystallites / Y. V. Knyazev, O. P. Ikkert, S. V. Semenov [et al.] // J. Alloys Compd. - 2022. - Vol. 923. - Ст. 166346, DOI 10.1016/j.jallcom.2022.166346. - Cited References: 109. - This study was supported by the Russian Science Foundation, project no. 22-24-00601 (https://rscf.ru/project/22–24–00601/). - The electron microscopy and Mössbauer spectroscopy studies were carried out on the equipment of the Krasnoyarsk Territorial Center for Collective Use, Krasnoyarsk Scientific Center, Siberian Branch of the Russian Academy of Sciences. We thank Dr. Ivan Nemtsev for the SEM images. The contribution of M. P. (development of methodology of sample preparation for EXAFS measurements) was partially supported by the Russian Ministry of Science and Higher Education via the budget project of SRF SKIF, Boreskov Institute of Catalysis . - ISSN 0925-8388
Кл.слова (ненормированные):
Biomineralization -- Superparamagnetic nanoparticles -- Interparticle interactions -- Iron sulfide -- Ferrihydrite
Аннотация: A composite based on nanorod-shaped greigite (Fe3S4) crystallites with adsorbed ferrihydrite (Fe2O3 ‧ nH2O) nanoparticles has been synthesized. The synthesis has been performed by biomineralization of the bacterial wall of a sulfate-reducing Desulfovibrio sp. A2 bacteria. The phase composition of the synthesized composite has been investigated by X-ray powder and electron diffraction, as well as Fourier-transform infrared, extended X-ray absorption fine structure, and Mössbauer spectroscopy. The magnetic measurement data have shown that the sample under study contains two magnetic phases: multidomain nanorod-shaped greigite and ultrasmall ferrihydrite nanoparticles. The constant atomic fraction of the greigite crystalline phase in the range of 4–300 K (~20%) revealed by Mössbauer spectroscopy is indicative of a blocked magnetic moment of nanorod-shaped Fe3S4. It is shown that nanorod-shaped Fe3S4 crystallites are strongly magnetically bound with adsorbed Fe2O3 ‧ nH2O (Eint ~ 1200kB) nanoparticles. This significantly slows down the superparamagnetic relaxation of the magnetic moments of ferrihydrite nanoparticles. Therefore, the blocking temperature noticeably increases and attains, according to the Mössbauer spectroscopy data, a value of TB = 140 K (the magnetic measurements yield TB = 72 K). The processes of superparamagnetic blocking of the magnetic moments of ferrihydrite nanoparticles manifest themselves in the evolution of the magnetic properties of the investigated sample (a significant increase in the coercivity and remanent magnetization). In support of the Mössbauer spectroscopy data, a sufficiently high superparamagnetic blocking temperature has been established, which discloses the effect of magnetizing of ferrihydrite nanoparticles by coarser greigite formations, analogously to the effect of interparticle magnetic interactions.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Department of Plant Physiology, Biotechnology, and Bioinformatics, Tomsk State University, Tomsk, 634050, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Synchrotron radiation facility SKIF, Boreskov Institute of Catalysis SB RAS, Kol'tsovo, 630559, Russian Federation
National Research Center “Kurchatov Institute”, Moscow, 123182, Russian Federation

Доп.точки доступа:
Knyazev, Yu. V.; Князев, Юрий Владимирович; Ikkert, O. P.; Semenov, S. V.; Семёнов, Сергей Васильевич; Volochaev, M. N.; Волочаев, Михаил Николаевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Platunov, M. S.; Платунов, Михаил Сергеевич; Khramov, E. V.; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Shestakov, N. P.; Шестаков, Николай Петрович; Smorodina, E. D.; Karnachuk, O. V.; Balaev, D. A.; Балаев, Дмитрий Александрович
}
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5.


   
    Transport properties of FeSi with cobalt impurities / G. Y. Yurkin [et al.] // TRENDS IN MAGNETISM. - 2011. - Vol. 168-169. - P493-496, DOI 10.4028/www.scientific.net/SSP.168-169.493 . - ISSN 1012-0394
Кл.слова (ненормированные):
iron monosilicide -- kondo effect -- magnetization -- resistivity -- spindependent scattering -- superparamagnetic cluster -- cobalt -- crystals -- electric resistance -- electron energy loss spectroscopy -- kondo effect -- magnetic field effects -- magnetic properties -- magnetization -- magnetoresistance -- scattering -- superparamagnetism -- transport properties -- cobalt -- electric conductivity -- electron scattering -- impurities -- kondo effect -- magnetism -- magnetization -- experimental investigations -- kondo models -- magnetoresistance properties -- resistivity -- si crystals -- spin dependent scattering -- superparamagnetic clusters -- crystal impurities -- crystal impurities
Аннотация: The results of experimental investigations of Fe1-xCo xSi crystals in the impurity limit are presented in this article. We made an attempt to study changes of magnetic properties and conductivity in mixed Fe1-xCoxSi crystals in the impurity limit. Magnetoresistance properties are well described in the framework of Kondo model. The presence of Co-subsystem leads to the occurrence of spin-dependent channel in electron scattering conduction.

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Держатели документа:
Kirensky Institute of Physics, SB, RAS, 660036, Krasnoyarsk, Russian Federation
Siberian Federal University, 660041, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Yurkin, G. Yu.; Юркин, Глеб Юрьевич; Patrin, G. S.; Патрин, Геннадий Семёнович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Beletsky, V. V.
}
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6.


   
    Dimethylsulfoxide as a media for one-stage synthesis of the Fe3O4-based ferrofluids with a controllable size distribution / V. L. Kirillov [et al.] // Mater. Chem. Phys. - 2019. - Vol. 225. - P. 292-297, DOI 10.1016/j.matchemphys.2019.01.003. - Cited References: 36. - This work was supported by the Russian Science Foundation , project no. 17-12-01111. . - ISSN 0254-0584
Кл.слова (ненормированные):
Ferrofluid -- Magnetite nanoparticles -- One-step synthesis -- Superparamagnetic nanoparticles -- Ferromagnetic resonance
Аннотация: The ultrafine (d = 4 nm) magnetite ferrofluid with a narrow nanoparticle size distribution has been synthesized in one stage at room temperature from a solution of iron(II) and (III) chlorides in dimethylsulfoxide (DMSO) with the propylene epoxide admixture. This is the first example of obtaining a stable concentrated ultrafine magnetite/DMSO ferrofluid at room temperature. X-ray diffraction, transmission electron microscopy, ferromagnetic resonance, Mossbauer spectroscopy, and magnetostatic study have been used to elucidate the role of DMSO and the H2O/DMSO ratio in the formation of a stable colloid with a desired nanoparticle size. The initial stages of the magnetite nanoparticles formation have been investigated by the ferromagnetic resonance technique.

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Держатели документа:
Boreskov Institute of Catalysis, Russian Academy of Sciences, Siberian Branch, Novosibirsk, 630090, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Kirillov, V. L.; Yakushkin, S. S.; Balaev, D. A.; Балаев, Дмитрий Александрович; Dubrovskiy, A. A.; Дубровский, Андрей Александрович; Semenov, S. V.; Семёнов, Сергей Васильевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Bayukov, O. A.; Баюков, Олег Артемьевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Yatsenko, D. A.; Martyanov, O. N.
}
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7.


   
    Aptamer-conjugated superparamagnetic ferroarabinogalactan nanoparticles for targeted magnetodynamic therapy of cancer / O. S. Kolovskaya, T. N. Zamay, G. S. Zamay [et al.] // Cancers. - 2020. - Vol. 12, Is. 1. - Ст. 216, DOI 10.3390/cancers12010216. - Cited References: 46. - This research was funded by the Ministry of Science and Higher Education of the Russian Federation; project 0287-2019-0007 . - ISSN 2072-6694
Кл.слова (ненормированные):
aptamers -- arabinogalactan -- superparamagnetic ferroarabinogalactans -- drug delivery -- magnetodynamic therapy -- magnetically induced cell disruption -- magnetic resonance imaging
Аннотация: Nanotechnologies involving physical methods of tumor destruction using functional oligonucleotides are promising for targeted cancer therapy. Our study presents magnetodynamic therapy for selective elimination of tumor cells in vivo using DNA aptamer-functionalized magnetic nanoparticles exposed to a low frequency alternating magnetic field. We developed an enhanced targeting approach of cancer cells with aptamers and arabinogalactan. Aptamers to fibronectin (AS-14) and heat shock cognate 71 kDa protein (AS-42) facilitated the delivery of the nanoparticles to Ehrlich carcinoma cells, and arabinogalactan (AG) promoted internalization through asialoglycoprotein receptors. Specific delivery of the aptamer-modified FeAG nanoparticles to the tumor site was confirmed by magnetic resonance imaging (MRI). After the following treatment with a low frequency alternating magnetic field, AS-FeAG caused cancer cell death in vitro and tumor reduction in vivo. Histological analyses showed mechanical disruption of tumor tissues, total necrosis, cell lysis, and disruption of the extracellular matrix. The enhanced targeted magnetic theranostics with the aptamer conjugated superparamagnetic ferroarabinogalactans opens up a new venue for making biocompatible contrasting agents for MRI imaging and performing non-invasive anti-cancer therapies with a deep penetrated magnetic field.

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Держатели документа:
Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Science”, 660036 Krasnoyarsk, Russia
Laboratory for Biomolecular and Medical Technologies, Faculty of Medicine, Krasnoyarsk State Medical University named after prof. V.F. Voino-Yasenecki, 660022 Krasnoyarsk, Russia
Irkutsk Institute of Chemistry named after A.E. Favorsky, the Siberian Branch of the Russian Academy of Sciences, 664033 Irkutsk, Russia
L.V. Kirensky Institute of Physics SB RAS—The Branch of Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, 660036 Krasnoyarsk, Russia
Laboratory of Advanced Materials and Technology, Tomsk State University, 634050 Tomsk, Russia
Institute of Chemistry and Chemical Technology SB RAS—The Branch of Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, 660036 Krasnoyarsk, Russia
School of Engineering Physics and Radio Electronics, Siberian Federal University, 660041 Krasnoyarsk, Russia
Research Center for Computational Design of Advanced Functional Materials (CD-FMat), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8568, Japan
School of Non-Ferrous Metals and Materials Science, Siberian Federal University, 660041 Krasnoyarsk, Russia
Faculty of Physics, Department of Magnetism, Lomonosov Moscow State University, 119991 Moscow, Russia
School of Fundamental Biology and Biotechnology, Siberian Federal University, 660041 Krasnoyarsk, Russia
Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada

Доп.точки доступа:
Kolovskaya, O. S.; Коловская, О. С.; Zamay, T. N.; Замай, Т. Н.; Zamay, G. S.; Замай, Галина Сергеевна; Babkin, V. A.; Medvedeva, E. N.; Neverova, N. A.; Kirichenko, A. K.; Zamay, S. S.; Замай, С. С.; Lapin, I. N.; Morozov, E. V.; Морозов, Евгений Владимирович; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Narodov, A. A.; Fedorov, D. G.; Tomilin, F. N.; Томилин, Феликс Николаевич; Zabluda, V. N.; Заблуда, Владимир Николаевич; Alekhina, Yu.; Lukyanenko, K. A.; Glazyrin, Yu. E.; Svetlichnyi, V. A.; Berezovski, M. V.; Kichkailo, A. S.
}
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8.


   
    Superparamagnetic effect on the dynamic remagnetization of CoFe2O4 nanoparticles in a pulse field / D. A. Balaev, I. S. Poperechny, A. A. Krasikov [et al.] // 4th International Baltic Conference on Magnetism (IBCM 2021) : Book of abstracts. - 2021. - P. 104. - Cited References: 7

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS

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.; Raikher, Y. L.; International Baltic Conference on Magnetism: focus on nanobiomedicine and smart materials(4 ; 2021 ; Aug. 29-Sept. 2 ; Svetlogorsk, Russia); Балтийский федеральный университет им. И. Канта
}
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9.


   
    Investigation of ferromagnetic and superparamagnetic particles of ball milled cobalt-copper alloys / Iskhakov R.S., Denisova E.A., Kuzovnikova L.A., Komogortsev S.V. // Moscow Int. Symp. on Magnet. (MISM-2008) : June 20-25, 2008, Moscow : book of abstract. - 2008. - Ст. 25PO-13-29. - p. 769. - This work was supported by the RFBR and KRSF, project no.07-03-96808 and National Science Fund (2008, PhD RAS)

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Доп.точки доступа:
Iskhakov, R. S.; Исхаков, Рауф Садыкович; Denisova, E. A.; Денисова, Елена, Александровна; Kuzovnikova, L. A.; Кузовникова, Людмила, Александровна; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Moscow International Symposium on Magnetism(4 ; 2008 ; Jun. ; Moscow); Московский государственный университет им. М.В. Ломоносова; Российский фонд фундаментальных исследований
}
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10.


   
    Frequency-field dependences of FMR in NiFe2O4 superparamagnetic powders / S. V. Stolyar, O. A. Li, E. D. Nikolaeva [et al.] // V International Baltic Conference on Magnetism. IBCM : Book of abstracts. - 2023. - P. 138. - Cited References: 4

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS
Siberian Federal University
Federal Research Center KSC SB RAS

Доп.точки доступа:
Stolyar, S. V.; Столяр, Сергей Викторович; Li, O. A.; Ли О.А.; Nikolaeva, E. D.; Vorotynov, A. M.; Воротынов, Александр Михайлович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Pyankov, V. F.; Boev, N. M.; Боев, Никита Михайлович; Kryukova, O. V.; International Baltic Conference on Magnetism(5 ; 2023 ; Aug. 20-24 ; Svetlogorsk, Russia); Балтийский федеральный университет им. И. Канта
}
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11.


   
    Magnetic collective state formation upon tuning the interparticle interactions in ensembles of ultrafine ferrihydrite nanoparticles / D. A. Balaev, A. A. Krasikov, Yu. V. Knyazev [et al.] // Nano-Struct. Nano-Objects. - 2024. - Vol. 37. - Ст. 101089, DOI 10.1016/j.nanoso.2023.101089. - Cited References: 93. - The authors thank M.N. Volochaev for the TEM investigations . - ISSN 2352-507X. - ISSN 2352-5088
Кл.слова (ненормированные):
Nanoparticle coating -- Superspin-glass state -- Superparamagnetic blocking -- Surface spin subsystem
Аннотация: The results of a study of the dynamic (alternating current magnetic susceptibility) and static magnetic properties, as well as 57Fe Mössbauer spectrometry and ferromagnetic resonance of two-line ferrihydrite nanoparticle systems with varying intensities of magnetic interparticle interactions are reported. The strength of the magnetic interparticle interactions has been tuned by coating (with various degrees of coating) the ferrihydrite particles (2–4 nm in size and an average size ∼2.7 nm) of the initial synthetic sample by arabinogalactan. Also, a biogenic ferrihydrite sample (an average particle size of 2-nm) with a natural organic coating was studied and it has the weakest magnetic interparticle interactions among of all the samples. Relaxation times of the particle’s magnetic moment were determined by the data of static and dynamic magnetic susceptibilities and from analysis of 57Fe Mössbauer spectrometry. Based on the temperature dependences of the relaxation times, it has been concluded that the predominantly collective processes of freezing of the particle magnetic moments occur under the action of the magnetic interparticle interactions. It is shown that an important role in these processes is played by a magnetic subsystem of the surface spins of the particles. The effect of the interplay between the surface spin and magnetic moment subsystems on the static magnetic properties (low-temperature magnetic hysteresis loops) and the parameters of the microwave absorption line under the magnetic resonance conditions is discussed.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Institute of Chemistry and Chemical Technology, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Balaev, D. A.; Балаев, Дмитрий Александрович; Krasikov, A. A.; Красиков, Александр Александрович; Knyazev, Yu. V.; Князев, Юрий Владимирович; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Mikhlin, Yu. L.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Ladygina, V. P.; Stolyar, S. V.; Столяр, Сергей Викторович; Iskhakov, R. S.; Исхаков, Рауф Садыкович
}
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12.


   
    Magnetic interparticle interactions and superparamagnetic blocking of powder systems of biogenic ferrihydrite nanoparticles / A. A. Krasikov, Yu. V. Knyazev, D. A. Balaev [et al.] // J. Exp. Theor. Phys. - 2023. - Vol. 137, Is. 6. - P. 903-913, DOI 10.1134/S1063776123120075. - Cited References: 58. - This study was supported by the Russian Science Foundation, project no. 22-72-00134 . - ISSN 1063-7761. - ISSN 1090-6509
Аннотация: The magnetic-field dependence of the superparamagnetic-blocking temperature TB of systems of antiferromagnetically ordered ferrihydrite nanoparticles has been investigated and analyzed. We studied two powder systems of nanoparticles: particles of “biogenic” ferrihydrite (with an average size of 2.7 nm), released as a result of vital functions of bacteria and coated with a thin organic shell, and particles of biogenic ferrihydrite subjected to low-temperature annealing, which cause an increase in the average particle size (to 3.8 nm) and burning out of the organic shell. The character of the temperature dependences of magnetization, measured after cooling in a weak field, as well as the shape of the obtained dependences TB(H), demonstrate peculiar features, indicating the influence of magnetic interparticle interactions. A detailed analysis of the dependences TB(H) within the random magnetic anisotropy model made it possible to estimate quantitatively the intensity of magnetic particle–particle interactions and determine the magnetic anisotropy constants of individual ferrihydrite particles.

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Публикация на русском языке Магнитные межчастичные взаимодействия и суперпарамагнитная блокировка порошковых систем наночастиц биогенного ферригидрита [Текст] / А. А. Красиков, Ю. В. Князев, Д. А. Балаев [и др.]. - 13 с. // Журн. эксперим. и теор. физ. - 2023. - Т. 164 Вып. 6. - С. 1026-1038

Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, 660036, Akademgorodok, Krasnoyarsk, Russia
Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, 660036, Krasnoyarsk, Russia

Доп.точки доступа:
Krasikov, A. A.; Красиков, Александр Александрович; Knyazev, Yu. V.; Князев, Юрий Владимирович; Balaev, D. A.; Балаев, Дмитрий Александрович; Stolyar, S. V.; Столяр, Сергей Викторович; Ladygina, V. P.; Balaev, A. D.; Балаев, Александр Дмитриевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович
}
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13.


   
    Superparamagnetic relaxation in ensembles og ultrasmall ferrihydrite nanoparticles / D. A. Balaev, S. A. Skorobogatov, D. A. Velikanov [et al.] // Магнитные материалы. Новые технологии : тез. докл. IX Байкал. междунар. конф. BICMM-2023 / чл. прогр. ком.: S. S. Aplesnin [et al.] ; чл. орг. ком. R. S. Iskhakov [et al.]. - Иркутск, 2023. - P. 92. - Библиогр.: 1 . - ISBN 978-5-962402178-0
   Перевод заглавия: Спиновая динамика в ансамблях ультрамалых ферричастиц ферригидрита

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Держатели документа:
Сибирский федеральный университет
Институт физики им. Л. В. Киренского СО РАН

Доп.точки доступа:
Аплеснин, Сергей Степанович \чл. прогр. ком.\; Aplesnin, S. S.; Балаев, Дмитрий Александрович \чл. прогр. ком.\; Balaev, D. A.; Овчинников, Сергей Геннадьевич \чл. прогр. ком.\; Ovchinnikov, S. G.; Исхаков, Рауф Садыкович \чл. орг. ком.\; Iskhakov, R. S.; Балаев, Дмитрий Александрович; Skorobogatov, S. A.; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Bayukov, O. A.; Баюков, Олег Артемьевич; Stolyar, S. V.; Столяр, Сергей Викторович; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Исхаков, Рауф Садыкович; Knyazev, Yu. V.; Князев, Юрий Владимирович; Байкальская международная конференция "Магнитные материалы. Новые технологии"(9 ; 2023 ; сент. ; 11-14 ; Байкальск); "Магнитные материалы. Новые технологии", Байкальская международная конференция(9 ; 2023 ; сент. ; 11-14 ; Байкальск); "Magnetic materials. New tecnologies", Baikal International Conference(9 ; 2023 ; Sept. ; 11-14 ; Baikalsk); Иркутский государственный университет
}
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14.


   
    Interparticle magnetic interactions and magnetic field dependence of superparamagnetic blocking temperature in ferrihydrite nanoparticle powder systems / A. A. Krasikov, Yu. V. Knyazev, D. A. Balaev [et al.] // Phys. B: Condens. Matter. - 2023. - Vol. 660. - Ст. 414901, DOI 10.1016/j.physb.2023.414901. - Cited References: 66. - This study was supported by his work was supported by the Russian Science Foundation, project no. 22-72-00134 . - ISSN 0921-4526. - ISSN 1873-2135
Кл.слова (ненормированные):
Ferrihydrite nanoparticles -- Interparticle magnetic interactions -- Superparamagnetic blocking temperature -- Coating -- Arabinogalactan
Аннотация: In this study, nanoparticles of initial synthetic ferrihydrite have been coated with arabinogalactan. The synthesized series of samples with different degrees of coverage of particles has been characterized by X-ray photoelectron spectroscopy, Mossbauer spectroscopy, transmission electron microscopy and magnetometry. The superparamagnetic blocking temperature decreases monotonically with an increase in the degree of coverage of ferrihydrite particles, which is unambiguously related to the different role of the interparticle magnetic interactions in the investigated powder systems. Analysis of the field dependence of the blocking temperature within the random anisotropy model has shown that an increase in the degree of coverage of ferrihydrite particles leads to a decrease in the size of a cluster in which the behaviors of the nanoparticle magnetic moments are correlated. The results obtained have shown the possibility of effective control of the strength of magnetic interparticle interactions in powder ferrihydrite systems by coating nanoparticles with arabinogalactan.

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

Доп.точки доступа:
Krasikov, A. A.; Красиков, Александр Александрович; Knyazev, Yu. V.; Князев, Юрий Владимирович; Balaev, D. A.; Балаев, Дмитрий Александрович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Stolyar, S. V.; Столяр, Сергей Викторович; Mikhlin, Yu. L.; Yaroslavtsev, R. N.; Ярославцев, Роман Николаевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович
}
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15.


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

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

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

Доп.точки доступа:
Stolyar, S. V.; Li, O. A.; Nikolaeva, E. D.; Boev, N. M.; Боев, Никита Михайлович; Vorotynov, A. M.; Воротынов, Александр Михайлович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Pyankov, V. F.; Knyazev, Yu. V.; Князев, Юрий Владимирович; Bayukov, O. A.; Баюков, Олег Артемьевич; Shokhrina, A. O.; Molokeev, M. S.; Молокеев, Максим Сергеевич; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Nanophysics and Nanoelectronics, International Symposium(27 ; 13-16 March 2023 ; Nizhny Novgorod, Russia)
}
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16.


   
    Ферромагнитный резонанс в суперпарамагнитных частицах NiFe2O4 / С. В. Столяр, О. А. Ли, Е. Д. Николаева [и др.] // Магнитные материалы. Новые технологии : тез. докл. IX Байкал. междунар. конф. BICMM-2023 / чл. прогр. ком.: S. S. Aplesnin [et al.] ; чл. орг. ком. R. S. Iskhakov [et al.]. - Иркутск, 2023. - С. 47-48. - Библиогр.: 4 . - ISBN 978-5-962402178-0
   Перевод заглавия: Ferromagnetic resonance in superparamagnetic particles NiFe2O4

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Держатели документа:
Сибирский федеральный университет
Красноярский научный центр СО РАН
Институт физики им. Л. В. Киренского СО РАН

Доп.точки доступа:
Аплеснин, Сергей Степанович \чл. прогр. ком.\; Aplesnin, S. S.; Балаев, Дмитрий Александрович \чл. прогр. ком.\; Balaev, D. A.; Овчинников, Сергей Геннадьевич \чл. прогр. ком.\; Ovchinnikov, S. G.; Исхаков, Рауф Садыкович \чл. орг. ком.\; Iskhakov, R. S.; Столяр, Сергей Викторович; Stolyar, S. V.; Ли, О.А.; Николаева, Е. Д.; Исхаков, Рауф Садыкович; Боев, Никита Михайлович; Boev, N. M.; Шохрина, А. О.; Байкальская международная конференция "Магнитные материалы. Новые технологии"(9 ; 2023 ; сент. ; 11-14 ; Байкальск); "Магнитные материалы. Новые технологии", Байкальская международная конференция(9 ; 2023 ; сент. ; 11-14 ; Байкальск); "Magnetic materials. New tecnologies", Baikal International Conference(9 ; 2023 ; Sept. ; 11-14 ; Baikalsk); Иркутский государственный университет
}
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17.


   
    Superparamagnetic behavior of titanium nickelide nanoparticles obtained by laser ablation / A. K. Drozdova [и др.] // Moscow Int. Symp. on Magnet. (MISM-2017) : 1-7 July 2017 : book of abstracts. - 2017. - Ст. 2PO-J-33. - P. 286. - Cited References: 2

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Доп.точки доступа:
Drozdova, A. K.; Cherepanov, V. N.; Svetlichny, V. A.; Kveglis, L. I.; Volochaev, M. N.; Волочаев, Михаил Николаевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Moscow International Symposium on Magnetism(7 ; 2017 ; Jul. ; Moscow); Московский государственный университет им. М.В. Ломоносова; Российский фонд фундаментальных исследований
}
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18.


   
    Formation, characterization and magnetic properties of maghemite γ-Fe2O3 nanoparticles in borate glasses / I. S. Edelman [et al.] // J. Alloys Compd. - 2015. - Vol. 624. - P. 60-67, DOI 10.1016/j.jallcom.2014.11.059. - Cited References: 25. - This work was supported partly by the Russian Foundation for Basic Research - Russia, Grant No. 14-02-01211-a and by the President of Russia Grant No. NSh-2886.2014.2. This work was performed using the equipment of Unique Scientific Facility "Kurchatov Synchrotron Radiation Source'' supported by the Russian Ministry of Science and Education (project code RFMEFI61914X0002). . - ISSN 0925-8388
РУБ Chemistry, Physical + Materials Science, Multidisciplinary + Metallurgy & Metallurgical Engineering
Рубрики:
SUPERPARAMAGNETIC RESONANCE
   HYSTERESIS LOOPS

   EXCHANGE BIAS

   IONS

   MATRIX

Кл.слова (ненормированные):
Nanostructures -- Crystal structure and symmetry -- Magnetic measurements
Аннотация: A new type of nanocomposite materials based on maghemite, γ-Fe2O3, nanoparticles dispersed in borate glasses co-doped with low contents of iron together with the larger radius element combinations: Y and Bi, or Sm and Pb, or Y and Pb is studied. Nanoparticles arise as a result of heat treatment of the glasses which gives them properties characteristic of magnetically ordered substances. Transmission electron microscopy and XRD show that only one magnetic phase, namely γ-Fe2O3 nanoparticles, occurs in glasses subjected to the thermal treatment at 540 °C during 24 h independently on the doping element nature. At the same time doping element and their concentrations ratio in every combination affect the particles average size and glass magnetic properties, such as magnetization temperature dependences, Faraday rotation value and electron magnetic resonance spectrum characteristics.

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Держатели документа:
RAS, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660036, Russia
NRC Kurchatov Inst, Moscow 123182, Russia
RAS, Siberian Branch, Boreskov Inst Catalysis, Novosibirsk 630090, Russia
Novosibirsk State Univ, Novosibirsk 630090, Russia

Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Ivanova, O. S.; Иванова, Оксана Станиславовна; Petrakovskaja, E. A.; Петраковская, Элеонора Анатольевна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Tarasov, I. A.; Тарасов, Иван Анатольевич; Zubavichus, Y. V.; Trofimova, N. N.; Zaikovskii, V. I.; Russian Foundation for Basic Research - Russia [14-02-01211-a]; President of Russia [NSh-2886.2014.2]; Russian Ministry of Science and Education [RFMEFI61914X0002]
}
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19.


   
    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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20.


   
    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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