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Magnetic properties of single crystals of the CrxMn1–xS solid solutions (0 ≤ x ˂ 0.3) / G. M. Abramova [et al.] // Phys. Solid State. - 2012. - Vol. 54, Is. 2. - P. 293–297, DOI 10.1134/S1063783412020023. - Cited References: 7 . - ISSN 1063-7834

РУБ Physics + Condensed Matter
Рубрики:
Cr
Fe

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Публикация на русском языке Магнитные свойства монокристаллов твердых растворов Crx Mn1-x S (0 ≤ x ˂ 0.3) [Текст] / Г. М. Абрамова [и др.] // Физ. тверд. тела. - 2012. - Т. 54 Вып. 2. - С. 277-281

Доп.точки доступа:
Abramova, G. M.; Абрамова, Галина Михайловна; Petrakovskii, G. A.; Петраковский, Герман Антонович; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Vorotynov, A. M.; Воротынов, Александр Михайлович; Molokeev, M. S.; Молокеев, Максим Сергеевич; Mita, Y.; Sokolov, V. V.; Patrin, G. S.; Патрин, Геннадий Семёнович
}
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Study of solid-state reactions and order-disorder transitions in Pd/α-Fe(001) thin films / S. M. Zharkov [et al.] // JETP Letters. - 2014. - Vol. 99, Is. 7. - P. 405-409, DOI 10.1134/S0021364014070145. - Cited References: 20. - This work was supported in part by the Russian Foundation for Basic Research (project no. 14-03-00515a) and by the Ministry of Education and Science of the Russian Federation (state contract for the Siberian Federal University for 2014). . - ISSN 0021-3640. - ISSN 1090-6487

РУБ Physics, Multidisciplinary
Рубрики:
MAGNETIC-PROPERTIES
PHASE
Fe
Аннотация: The formation of the hard-magnetic ordered L10-FePd phase in thin bilayer Pd/α-Fe(001) films has been experimentally studied. Solid-state reactions initiated by thermal heating in bilayer Pd/α-Fe(001) films with a thickness of 50–60 nm (the atomic ratio Pd: Fe ≈ 50: 50) separated from the substrate have been studied using the in situ electron diffraction methods. It has been shown that the solid-state reaction between the palladium and iron layers in Pd/α-Fe(001) starts at 400°C with the formation of the disordered Fe-Pd phase. At 480°C, the ordered L10-FePd phase is formed. The order-disorder phase transition has been studied. It has been established that the transition of the ordered L10-FePd phase to the disordered FePd phase starts at 725°C. At 740°C, only the disordered FePd phase is present over the whole volume of the film. The observed temperature of the order-disorder phase transition is shifted from the equilibrium value by 35°C to higher temperatures. This effect is assumingly associated with the higher concentration of palladium atoms at the boundaries of the Fe-Pd crystal grains owing to the grain-boundary adsorption.

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Публикация на русском языке Исследование процессов твердофазных реакций и переходов порядок-беспорядок в тонких пленках Pd/α-Fe(001) [Текст] / С. М. Жарков [и др.] // Письма в Журн. эксперим. и теор. физ. : Наука, 2014. - Т. 99 Вып. 7-8. - С. 472-477

Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia

Доп.точки доступа:
Zharkov, S. M.; Жарков, Сергей Михайлович; Moiseenko, E. T.; Моисеенко, Евгений Тимофеевич; Altunin, R. R.; Алтунин, Роман Русланович; Nikolaeva, N. S.; Zhigalov, V. S.; Жигалов, Виктор Степанович; Myagkov, V. G.; Мягков, Виктор Григорьевич; Russian Foundation for Basic Research [14-03-00515a]; Ministry of Education and Science of the Russian Federation
}
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Analysis of the structure and magnetic properties of an interface in multilayered (Fe/Si) N nanostructures with the surface-sensitive XMCD method / M. S. Platunov [et al.] // JETP Letters. - 2014. - Vol. 99, Is. 12. - P. 706-711, DOI 10.1134/S002136401412011X. - Cited References: 26. - We are grateful to S.V. Komogortsev for stimulating discussions and to the management of BESSY II, Helmholtz-Zentrum Berlin, for the opportunity of performing experiments at the UE46-PGM1 beamline. This work was supported by the Russian Foundation for Basic Research (project nos. 13-02-01265a and 14-02-31051mol-a), by the Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools (project no. NSh- 2886.2014.2), by the Presidium of the Russian Academy of Sciences (program no. 24.34), and by the Ministry of Education and Science of the Russian Federation (state contract no. 02.G25.31.0043 and state task for research at Siberian Federal University in 2014). . - ISSN 0021-3640. - ISSN 1090-6487

РУБ Physics, Multidisciplinary
Рубрики:
RAY CIRCULAR-DICHROISM
   YIELD
   SPECTRA
   Fe
Аннотация: The structural and magnetic properties of (Fe/Si) N nanostructures obtained by successive deposition on the SiO2/Si(100) surface at a temperature of the substrate of 300 K have been studied. The thicknesses of all Fe and Si layers have been determined by transmission electron microscopy measurements. The magnetic properties have been studied by the X-ray magnetic circular dichroism (XMCD) method near the Fe L 3, 2 absorption edges. The orbital (m l ) and spin (m S ) contributions to the total magnetic moment of iron have been separated. The thicknesses of magnetic and nonmagnetic iron silicide on the Si/Fe and Fe/Si interfaces have been determined with the surface sensitivity of the XMCD method and the model of the interface between the nonmagnetic and weakened magnetic phases.

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Публикация на русском языке Анализ структуры и магнитных свойств интерфейса в многослойных наноструктурах (Fe/Si)N с применением поверхностно-чувствительного метода XMCD [Текст] / М. С. Платунов [и др.] // Письма в Журн. эксперим. и теор. физ. - 2014. - Т. 99 Вып. 11-12. - С. 817-823

Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
Helmholtz Zentrum Berlin, BESSY II, D-12489 Berlin, Germany

Доп.точки доступа:
Platunov, M. S.; Платунов, Михаил Сергеевич; Varnakov, S. N.; Варнаков, Сергей Николаевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Bondarenko, G. V.; Бондаренко, Геннадий Васильевич; Weschke, E.; Schierle, E.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Russian Foundation for Basic Research [13-02-01265a, 14-02-31051mol-a]; Council of the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools [NSh- 2886.2014.2]; Presidium of the Russian Academy of Sciences [24.34]; Ministry of Education and Science of the Russian Federation [02.G25.31.0043]
}
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    The manifestations of the two-dimensional magnetic correlations in the nanocrystalline ribbons Fe64CO21B15 / R. S. Iskhakov [et al.] // J. Magn. Magn. Mater. - 2015. - Vol. 374. - P. 423-426, DOI 10.1016/j.jmmm.2014.08.078. - Cited References: 42 . - ISSN 0304-8853. - ISSN 1873-4766
   Перевод заглавия: Проявления двумерных магнитных корреляций в нанокристаллических лентах Fe64Co21B15

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
GRAIN-SIZE DEPENDENCE
   RANDOM ANISOTROPY
   AMORPHOUS-ALLOYS
   COERCIVE FORCE
   FERROMAGNETS
   FILMS
   SATURATION
   Fe
   MICROSTRUCTURE
   EVOLUTION
Кл.слова (ненормированные):
Magnetic correlations -- Nanoclystalline alloys -- Random magnetic anisotropy -- Coercivity
Аннотация: We report and discuss the grain size dependence of the coercivity and approach magnetization to saturation in the FeCoB ribbons. Instead of expected three-dimensional magnetic correlations for 20 mu m thick ribbon with grain size about 10 nm, the observed behavior could be attributed to the two-dimensional stochastic magnetic domains and two dimensional magnetization ripple. (C) 2014 Elsevier B.V. All rights reserved.

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Держатели документа:
RAS, Kirensky Inst Phys, SB, Krasnoyarsk, Russia
Irkutsk State Univ, Irkutsk 664003, Russia
Siberian State Technol Univ, Krasnoyarsk, Russia

Доп.точки доступа:
Iskhakov, R. S.; Исхаков, Рауф Садыкович; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Balaev, A. D.; Балаев, Александр Дмитриевич; Gavriliuk, A. A.; Гаврилюк, Алексей Александрович
}
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    Spin-glass behavior in single crystals of hetero-metallic magnetic warwickites MgFeBO4, Mg0.5Co0.5FeBO4, and CoFeBO4 / A. Arauzo [et al.] // J. Magn. Magn. Mater. - 2015. - Vol. 392. - P. 114-125, DOI 10.1016/j.jmmm.2015.05.006. - Cited References:36. - This work has been financed by the MINECO Project MAT11/23791, MAT2014-53921-R and DGA IMANA project E-34, Russian Foundation for Basic Research (project Nr. 13-02-00958, 13-02-00358 and 14-02-31051-mol-a), Council for Grants of the President of the Russian Federation (project Nr. NSh-2886.2014.2 and SP-938.2015.5). The work of one of coauthors (M.S.P.) was supported by the program of Foundation for Promotion of Small Enterprises in Science and Technology ("UMNIK" program). . - ISSN 0304-8853. - ISSN 1873-4766
   Перевод заглавия: Спин-стекольное поведение в монокристаллах гетерометаллических магнитных варвикитов MgFeBO4, Mg0.5Co0.5FeBO4 и CoFeBO4

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
SYSTEMS
   CHAIN
   Fe
   SUSCEPTIBILITY
   Fe2OBO3
   ENERGY
Кл.слова (ненормированные):
Warwickites -- Spin glass -- Entanglement -- Exchange interaction
Аннотация: Magnetic properties of heterometallic warwickites MgFeBO4, Mg0.5Co0.5FeBO4, and CoFeBO4 are presented, highlighting the effect of Co substitution on the magnetic properties of these compounds. The analysis of magnetization and heat capacity data has shown that these compounds exhibit a spin-glass transition below TSG=10, 20 and 22 K, respectively. Using zero field ac susceptibility as entanglement witness we find that the low dimensional magnetic behavior above TSG show quantum entanglement behavior χ(Τ)∝T−α(Τ) up to TE≈130 K. The α parameters have been deduced as a function of temperature and Co content, indicating the existence of random singlet phase in this temperature region. Above TE the paramagnetism is interpreted in terms of non-entangled spins giving rise to Curie–Weiss paramagnetism. The different intra- and inter-ribbon exchange interaction pathways have been calculated within a simple indirect coupling model. It is determined that the triangular motifs in the warwickite structure, together with the competing interactions, induce frustration. The spin-glass character is explained in terms of the substitutional disorder of the Mg, Fe and Co atoms at the two available crystallographic sites, and the frustration induced by the competing interactions. The Co substitution induces uniaxial anisotropy, increases the absolute magnetization and increases the spin-glass freezing temperature. The entanglement behavior is supported in the intermediate phase irrespective of the introduction of anisotropy by the Co substitution.
Представлены магнитные свойства гетерометаллических варвикитов MgFeBO4, Mg0.5Co0.5FeBO4 и CoFeBO4, с выделением эффекта замещения Co на магнитные свойства этих соединений. Анализ данных намагниченности и теплоемкости показал, что эти соединения обладают спин-стекольным переходом ниже TSG=10, 20 и 22 К соответственно. Используя нулевого поля для переменной восприимчивости, мы находим, что низкоразмерных магнитное поведение выше TSG показать квантовая запутанность поведение χ (Τ) αT? α (Τ) до TEE130 К. Параметры α были выведены в зависимости от температуры и содержание Со, что указывает на существование случайного синглетного фазы в этой области температур. Над TE в Парамагнетизм интерпретируется в терминах перепутывания спинов, приводящих к парамагнетизму Кюри-Вейсса. Различные внутри- и обменного взаимодействия между направлениями были рассчитаны в модели простой косвенной связи. Установлено, что треугольные мотивы в структуре варвикита, вместе с конкурирующими взаимодействиями, вызывают фрустрацию. Характер спинового стекла объясняется в условиях беспорядка замещения атомов Mg, Fe и Co в двух доступных кристаллографических позициях, и фрустрацию, индуцированную конкурирующими взаимодействиями. Замена Со вызывает одноосную анизотропию, увеличивает абсолютную намагниченность и повышает температуру замерзания спинового стекла. Запутанность Поведения поддерживается в промежуточной фазе, независимо от анизотропии из-за введения замещения Со.

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Держатели документа:
Univ Zaragoza, Serv Med Fis, Zaragoza 50009, Spain
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660074, Russia
RAS, Shubnikov Inst Crystallog, Moscow 119333, Russia
Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
Univ Zaragoza, CSIC, Inst Ciencia Mat Aragon, Zaragoza 50009, Spain
Dept Fis Mat Condensada, Zaragoza 50009, Spain

Доп.точки доступа:
Arauzo, A.; Kazak, N. V.; Казак, Наталья Валерьевна; Ivanova, N. B.; Иванова, Наталья Борисовна; Platunov, M. S.; Платунов, Михаил Сергеевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Bayukov, O. A.; Баюков, Олег Артемьевич; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Lyubutin, I. S.; Frolov, K. V.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Bartolome, J.; MINECO Project [MAT11/23791, MAT2014-53921-R]; DGA IMANA project [E-34]; Russian Foundation for Basic Research [13-02-00958, 13-02-00358, 14-02-31051-mol-a]; Council for Grants of the President of the Russian Federation [NSh-2886.2014.2, SP-938.2015.5]; program of Foundation for Promotion of Small Enterprises in Science and Technology ("UMNIK" program)
}
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    Electrodeposited Co93.2P6.8 nanowire arrays with core-shell microstructure and perpendicular magnetic anisotropy / F. Nasirpouri [et al.] // J. Appl. Phys. - 2015. - Vol. 117, Is. 17. - Ст. 17E715, DOI 10.1063/1.4919124. - Cited References:30. - Alexander Samardak and his colleagues acknowledge the support of the Russian Ministry of Education and Science under the state task 559 and Far Eastern Federal University. . - ISSN 0021. - ISSN 1089-7550
   Перевод заглавия: Электроосажденные массивы нанонитей Co93.2P6.8 со структурой ядро-оболочка и перпендикулярной магнитной анизотропией

РУБ Physics, Applied
Рубрики:
FERROMAGNETIC NANOWIRES
   STRUCTURAL-PROPERTIES
   NI
   ALUMINA
   FE
Аннотация: We demonstrate the formation of an unusual core-shell microstructure in Co93.2P6.8 nanowires electrodeposited by alternating current (ac) in an alumina template. By means of transmission electron microscopy, it is shown that the coaxial-like nanowires contain amorphous and crystalline phases. Analysis of the magnetization data for Co-P alloy nanowires indicates that a ferromagnetic core is surrounded by a weakly ferromagnetic or non-magnetic phase, depending on the phosphor content. The nanowire arrays exhibit an easy axis of magnetization parallel to the wire axis. For this peculiar composition and structure, the coercivity values are 2380 ± 50 and 1260 ± 35 Oe, parallel and perpendicular to the plane directions of magnetization, respectively. This effect is attributed to the core-shell structure making the properties and applications of these nanowires similar to pure cobalt nanowires with an improved perpendicular anisotropy.

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Держатели документа:
Sahand Univ Technol, Fac Mat Engn, Tabriz 513351996, Iran
Far Eastern Fed Univ, Sch Nat Sci, Vladivostok, Russia
SB Russian Acad Sci, Inst Phys, Krasnoyarsk 660036, Russia
Univ Bath, Dept Phys, Bath BA2 7AY, Avon, England

Доп.точки доступа:
Nasirpouri, F.; Peighambari, S. M.; Samardak, A. S.; Ognev, A. V.; Sukovatitsina, E. V.; Modin, E. B.; Chebotkevich, L. A.; Komogortsev, S. V.; Комогорцев, Сергей Викторович; Bending, S. J.; Russian Ministry of Education and Science [559]; Far Eastern Federal University
}
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Ferromagnetism and strong magnetic anisotropy of the PbMnBO4 orthoborate single crystals / A. Pankrats [et al.] // J. Magn. Magn. Mater. - 2016. - Vol. 414. - P. 82-89, DOI 10.1016/j.jmmm.2016.04.042. - Cited References: 20. - We acknowledge the assistance of A. Dubrovsky in magnetic measurements. - This work was supported by the Russian Foundation for Basic Research, Projects nos. 13-02-00897 and 16-02-00563. MVE thanks for support the Russian Government Program of Competitive Growth of the Kazan Federal University, decision no. 930_p, May 22, 2015. . - ISSN 0304-8853

РУБ Materials Science, Multidisciplinary + Physics, Condensed Matter
Рубрики:
PbMBO4 M
   Resonance
   Symmetry
   Mn
   Fe
   Cr
Кл.слова (ненормированные):
Strong ferromagnetic anisotropy -- Ferromagnetic resonance -- Exchange interactions
Аннотация: The PbMnBO4 orthoborate single crystals were first grown and their magnetic properties and ferromagnetic resonance were studied. It was found that the ferromagnetic state below the Curie temperature TC=31 K is characterized by the strong magnetic anisotropy. The significant effective anisotropy fields of PbMnBO4 determine the energy gap in the FMR spectrum, which is extraordinary large for ferromagnets (112 GHz at T=4.2 K). It was shown that the static Jahn-Teller effect characteristic of the Mn3+ ion leads to both the ferromagnetic ordering and the strong magnetic anisotropy in the crystal. In the strong external magnetic field the induced ferromagnetic ordering is retained in the crystal above the Curie temperature up to the temperatures multiply higher than TC. A weak anomaly of the dielectric permittivity was observed in PbMnBO4 at the Curie temperature at which the long-range ferromagnetic order is established. © 2016 Elsevier B.V. All rights reserved.

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Держатели документа:
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Physics, Kazan Federal University, Kazan, Russian Federation

Доп.точки доступа:
Pankrats, A. I.; Панкрац, Анатолий Иванович; Sablina, K. A.; Саблина, Клара Александровна; Eremin, M.; Balaev, A. D.; Балаев, Александр Дмитриевич; Kolkov, M.; Колков, Максим Игоревич; Tugarinov, V. I.; Тугаринов, Василий Иванович; Bovina, A. F.; Бовина, Ася Федоровна
}
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Microstructure and Magnetooptics of Silicon Oxide with Implanted Nickel Nanoparticles / I. S. Edel'man [et al.] // J. Exp. Theor. Phys. - 2011. - Vol. 113, Is. 6. - P. 1040-1049, DOI 10.1134/S1063776111160035. - Cited References: 44. - This work was supported by the Russian Foundation for Basic Research (project nos. 11-02-00972, 11-02-90420, 11-02-91341) and the program Research and Scientific-Pedagogical Brainpower of Innovated Russia (State contract 02.740.11.0797). . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
SIMPLE METAL-CLUSTERS
   OPTICAL-PROPERTIES
   ION-IMPLANTATION
   FARADAY-ROTATION
   KERR SPECTRA
   GLASS
   RESONANCE
   PHYSICS
   ENERGY
   FE
Кл.слова (ненормированные):
Disperse structure -- Effective medium model -- Implanted samples -- Irradiation dose -- Magnetic circular dichroisms -- Magnetic Nickel -- Magneto-optical Faraday effect -- Magneto-optical measurements -- matrix -- Metal nanoparticles -- Metallic nickel -- Nickel nanoparticles -- Nickel particles -- Optical range -- Spectral dependences -- Surface plasma resonances -- Tensor components -- Thin near-surface layers -- Amorphous silicon -- Crystal microstructure -- Dichroism -- Faraday effect -- Ion implantation -- Magnetoplasma -- Metallic compounds -- Nanomagnetics -- Nanoparticles -- Nickel -- Silicon compounds -- Silicon oxides -- Spectroscopy -- Tensors -- Transmission electron microscopy -- Nickel oxide
Аннотация: Metallic nickel nanoparticles of various sizes are formed in a thin near-surface layer in an amorphous SiO2 matrix during 40-keV Ni+ ion implantation at a dose of (0.25-1.0) x 10(17) ions/cm(2). The micro-structure of the irradiated layer and the crystal structure, morphology, and sizes of nickel particles formed at various irradiation doses are studied by transmission electron microscopy and electron diffraction. The magnetooptical Faraday effect and the magnetic circular dichroism in an ensemble of nickel nanoparticles are studied in the optical range. The permittivity (epsilon) over cap tensor components are calculated for the implanted samples using an effective medium model with allowance for the results of magnetooptical measurements. The spectral dependences of the tensor (epsilon) over cap components are found to be strongly different from those of a continuous metallic nickel film. These differences are related to a disperse structure of the magnetic nickel phase and to a surface plasma resonance in the metal nanoparticles.

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Держатели документа:
[Edel'man, I. S.
Petrov, D. A.
Ivantsov, R. D.
Zharkov, S. M.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Zharkov, S. M.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Khaibullin, R. I.
Valeev, V. F.
Nuzhdin, V. I.
Stepanov, A. L.] Russian Acad Sci, Zavoisky Phys Tech Inst, Kazan 420029, Russia
[Stepanov, A. L.] Kazan Volga Reg Fed Univ, Kazan 420018, Russia
ИФ СО РАН
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodnyi pr. 79, Krasnoyarsk, 660041, Russian Federation
Zavoisky Physical-Technical Institute, Russian Academy of Sciences, Sibirskii trakt 10/7, Kazan, 420029, Russian Federation
Kazan (Volga Region), Federal University, ul. Kremlevskaya 18, Kazan, 420018, Russian Federation

Доп.точки доступа:
Edel'man, I. S.; Edelman, I. S.; Petrov, D. A.; Петров, Дмитрий Анатольевич; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Khaibullin, R. I.; Valeev, V. F.; Nuzhdin, V. I.; Stepanov, A. L.
}
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Novel pressure-induced magnetic transition in magnetite (Fe(3)O(4)) / Y. . Ding [et al.] // Phys. Rev. Lett. - 2008. - Vol. 100, Is. 4. - Ст. 45508, DOI 10.1103/PhysRevLett.100.045508. - Cited References: 39 . - ISSN 0031-9007

РУБ Physics, Multidisciplinary
Рубрики:
MULTIPLE-SCATTERING THEORY
   X-RAY DICHROISM
   LOWER MANTLE
   VERWEY TRANSITION
   K-EDGE
   CIRCULAR-DICHROISM
   SPIN TRANSITION
   BAND-STRUCTURE
   IRON
   FE
Кл.слова (ненормированные):
Emission spectroscopy -- Magnetoelectronics -- Pressure effects -- Synchrotron radiation -- Diamond anvil cell -- Magnetic transition -- X-ray magnetic circular dichroism -- Magnetite
Аннотация: Fe K-edge x-ray magnetic circular dichroism of magnetite (Fe(3)O(4)) powders was measured with synchrotron radiation under variable pressure and temperature conditions in diamond anvil cell. The magnetic dichroism was observed to decrease discontinuously by similar to 50% between 12 and 16 GPa, independent of temperature. The magnetic transition is attributed to a high-spin to intermediate-spin transition of Fe(2+) ions in the octahedral sites and could account for previously observed structural and electrical anomalies in magnetite at this pressure range. The interpretation of x-ray magnetic circular dichroism data is supported by x-ray emission spectroscopy and theoretical cluster calculations.

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Держатели документа:
Mao, Ho-kwang] Carnegie Inst Washington, HPSynC, Argonne, IL 60439 USA
Lang, Jonathan C.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA
[Ovchinnikov, Sergei G.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Orlov, Yuri S.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Mao, Ho-kwang] Carnegie Inst Washington, Geophys Lab, Washington, DC 20015 USA
[Mao, Ho-kwang] Carnegie Inst Washington, HPCAT, Argonne, IL 60439 USA
HPSynC, Carnegie Institution of Washington, 9700 South Cass Avenue, Argonne, IL 60439, United States
Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, United States
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Science, 660036 Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Geophysical Laboratory, Carnegie Institution of Washington, 5251 Broad Branch Road NW, Washington, DC 20015, United States
HPCAT, Carnegie Institution of Washington, Building 434E, 9700 South Cass Avenue, Argonne, IL 60439, United States

Доп.точки доступа:
Ding, Y.; Haskel, D.; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Tseng, Y. C.; Orlov, Y. S.; Lang, J. C.; Mao, H. K.
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10.

Magnetic anisotropy in the films of oriented carbon nanotubes filled with iron nanoparticles / S. V. Komogortsev [et al.] // Tech. Phys. Lett. - 2005. - Vol. 31, Is. 6. - P. 454-456, DOI 10.1134/1.1969761. - Cited References: 5 . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
FE
Аннотация: Films of carbon nanotubes oriented perpendicularly to the substrate surface and filled with iron nanoparticles have been synthesized and studied. Morphological features of these nanocomposite films lead to the appearance of an easy magnetization axis, which is perpendicular to the film plane. A method for enhancement of this effect is suggested and successfully tested. (C) 2005 Pleiades Publishing, Inc.

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Держатели документа:
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Russian Acad Sci, Siberian Div, Nikolaev Inst Inorgan Chem, Novosibirsk 630090, Russia
ИФ СО РАН

Доп.точки доступа:
Komogortsev, S. V.; Комогорцев, Сергей Викторович; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Denisova, E. A.; Денисова, Елена Александровна; Balaev, A. D.; Балаев, Александр Дмитриевич; Myagkov, V. G.; Мягков, Виктор Григорьевич; Bulina, N. V.; Булина, Наталья Васильевна; Kudashov, A. G.; Okotrub, A. V.
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