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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bykova L. E., Zhigalov V. S., Myagkov V. G., Volochaev M. N., Matsynin A. A., Bondarenko G. N., Patrin G. S.
Заглавие : Co-In2O3 nanocomposite films: Synthesis and structural and magnetic properties
Коллективы : Russian Foundation for Basic Research [16-03-00069, 18-42-243009r_mol_a]; Grant Council of the President of the Russian Federation [SP-1373.2016.3]; Government of the Krasnoyarsk Territory [18-42-243009r_mol_a]
Место публикации : Phys. Solid State. - 2018. - Vol. 60, Is. 10. - P.2072-2077. - ISSN 1063-7834, DOI 10.1134/S1063783418100049. - ISSN 1090-6460(eISSN)
Примечания : Cited References: 31. - This study was supported by the Russian Foundation for Basic Research, project no. 16-03-00069 and, in part, by the Grant Council of the President of the Russian Federation, project no. SP-1373.2016.3 and the Russian Foundation for Basic Research and the Government of the Krasnoyarsk Territory, project no. 18-42-243009r_mol_a.
Предметные рубрики: SOLID-STATE SYNTHESIS
FE-IN2O3 THIN-FILMS
THERMITE SYNTHESIS
Аннотация: The structural and magnetic properties of granular Co–In2O3 nanocomposite films formed by vacuum annealing of In/Co3O4 film bilayers at a temperature of 550°C have been investigated. The synthesized Co–In2O3 films contain ferromagnetic cobalt nanoclusters with an average size of 60 nm and a magnetization of ~340 emu/cm3 surrounded by the In2O3 layer and exhibit the thermally activated conductivity.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhigalov V. S., Bykova L. E., Myagkov V. G., Pavlova A. N., Volochaev M. N., Matsynin A. A., Patrin G. S.
Заглавие : CoPt-Al2O3 nanocomposite films: synthesis, structure, and magnetic properties
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of Krasnoyarsk Territory; Krasnoyarsk Regional Fund of Science [18-42-243009 r_mol_a, 19-43-240003 r_a]; Foundation for Assistance to Small Innovative Enterprises in Science and Technology [11843GU/2017, 0033636]
Место публикации : J. Surf. Ingestig. - 2020. - Vol. 14, Is. 1. - P.47-53. - ISSN 1027-4510, DOI 10.1134/S102745102001022X. - ISSN 1819-7094(eISSN)
Примечания : Cited References: 29. - This study was supported by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research projects no. 18-42-243009 r_mol_a and no. 19-43-240003 r_a, and the Foundation for Assistance to Small Innovative Enterprises in Science and Technology, contract no. 11843GU/2017, code 0033636, U.M.N.I.K. competition.
Предметные рубрики: SOLID-STATE SYNTHESIS
GRANULAR THIN-FILMS
THERMITE SYNTHESIS
PHASE
Аннотация: The structure and magnetic properties of CoPt–Al2O3 nanocomposite films synthesized by the annealing of Al/(Co3O4 + Pt) bilayers on a MgO(001) substrate at 650°C in vacuum are investigated. The synthesized composite films contain ferromagnetic CoPt grains with an average size of 25–45 nm enclosed in a nonconducting Al2O3 matrix. The saturation magnetization (Ms ~ 330 G) and coercivity (Hc ≈ 6 kOe) of the films are measured in the film plane and perpendicular to it. The obtained films are characterized by a spatial rotational magnetic anisotropy, which makes it possible to arbitrarily set the easy magnetization axis in the film plane or perpendicular to it using a magnetic field stronger than the coercivity (H ˃ Hc).
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Balashov Yu. Yu., Myagkov V. G., Bykova L. E., Volochaev M. N., Zhigalov V. S., Matsynin A. A., Galushka K. A., Bondarenko G. N., Komogortsev S. V.
Заглавие : Features of the course of the solid-state reactions in a Sn/Fe/Cu trilayer film system
Колич.характеристики :5 с
Коллективы : Nanophysics & Nanoelectronics, International Symposium
Место публикации : Tech. Phys. - 2023. - Vol. 68, Is. 7. - P.940-944. - ISSN 10637842 (ISSN), DOI 10.61011/TP.2023.07.56642.73-23. - ISSN 10906525 (eISSN)
Примечания : Cited References: 18
Аннотация: Study of the mechanisms of the solid-state reactions in Sn/Fe/Cu thin films is interesting both from a fundamental point of view and from a view of the importance of emerging intermetallics in the technology of solder joints and thin-film lithium-ion batteries. By the integrated approach, including both X-ray phase analysis and local elemental analysis of the cross-sections of the films, the phase composition and the mutual arrangement of phases were studied, at various stages of the solid-state reaction occurring at different temperatures. The observed sequence of the appearing phases differs significantly from the expected one if the mass transfer took place by a volume diffusion through the forming layers.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Myagkov V. G., Zhigalov V. S., Matsynin A. A., Bykova L. E., Mikhlin Y. L., Bondarenko G. N., Patrin G. S., Yurkin G. Yu.
Заглавие : Formation of ferromagnetic germanides by solid-state reactions in 20Ge/80Mn films
Место публикации : Thin Solid Films: Elsevier Science, 2014. - Vol. 552. - P.86-91. - ISSN 0040-6090, DOI 10.1016/j.tsf.2013.12.029
Примечания : Cited References: 53
Предметные рубрики: PHASE-FORMATION
MAGNETIC-PROPERTIES
Mn5Ge3 FILMS
X-RAY
Ge(111)
TRANSFORMATIONS
DIFFUSION
SPECTRA
SYSTEM
LAYERS
Ключевые слова (''Своб.индексиров.''): manganite-germanium--solid state reaction--first phase--mn5ge3 alloy--carbon impurity--oxygen impurity--annealing--magnetic anisotropy
Аннотация: Solid state reactions between Ge and Mn films are systematically examined using X-ray diffraction, photoelectron spectroscopy, and magnetic and electrical measurements. The films have a nominal atomic ratio Ge:Mn = 20:80 and are investigated at temperatures from 50 to 500 °C. It is established that after annealing at ~ 120°C, the ferromagnetic Mn5Ge3 phase is the first phase to form at the 20Ge/80Mn interface. As the annealing temperature increases to 300°C, the weak magnetic Mn5Ge 2 + Mn3Ge phases simultaneously begin to grow and they become dominant at 400°C. Increasing the annealing temperature to 500°C leads to the formation of the ferromagnetic phase with a Curie temperature TC ~ 350-360 K and magnetization 14-25 kA/m at room temperature. The X-ray diffraction study of the samples shows the reflections from the Mn 5Ge3 phase, and the photoelectron spectra contain the oxygen and carbon peaks. The homogeneous distribution of oxygen and carbon over the sample thickness suggests that the increased Curie temperature and magnetization are related to the migration of C and O atoms into the Mn 5Ge3 lattice and the formation of the Nowotny phase Mn5Ge3CxOy. The initiation temperature (~ 120 C) is the same in the Mn5Ge3 phase with the solid-state reactions in the Ge/Mn films as well as in the phase separation in the GexMn1 - x diluted semiconductors. Thus, we conclude that the synthesis of the Mn5Ge3 phase is the moving force for the spinodal decomposition of the GexMn 1 - x diluted semiconductors.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Matsynin A. A., Myagkov V. G., Bykova L. E., Zhigalov V. S., Tambasov I. A., Bondarenko G. N.
Заглавие : Formation of ferromagnetic Mn5Ge3 phase in Ge/Ag/Mn trilayers
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016): abstracts/ ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk: KIP RAS SB, 2016. - Ст.P10.13. - P.481. - ISBN 978-5-904603-06-9 (Шифр -478014040)
Примечания : References: 2. - This study was supported by the RFBR (Grants 15-02-00948-A, 16-03-00069 А), and by the program UMNIK-2015 №0011727
Ключевые слова (''Своб.индексиров.''): diluted magnetic semiconductor--spintronics--ferromagnetic mn5ge3--thin-film solid-state reaction
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Myagkov V. G., Bykova L. E., Zhigalov V. S., Tambasov I. A., Bondarenko G. N., Matsynin A. A.
Заглавие : Fourfold magnetic anisotropy of CoPd alloy, obtained by solid state reactions in epitaxal Pd/hcp-Сo and Pd/fcc-Co bilayers
Коллективы : Moscow International Symposium on Magnetism
Место публикации : Solid State Phenom.: Selected, peer reviewed papers/ ed.: N. Perov, A. Semisalova: Trans Tech Publications Ltd, 2015. - Vol. 233-234: Achievements in Magnetism. - P.571-574. - ISSN 1662-9779, DOI 10.4028/www.scientific.net/SSP.233-234.571. - ISSN 978-3-03835-482-6
Предметные рубрики: Achievements in magnetism
Ключевые слова (''Своб.индексиров.''): copd alloys--epitaxial growth--epitaxial relationship--magnetic anisotropy--solid-state reaction
Аннотация: The solid-state reaction between epitaxial hcp-Co (110) and fcc-Co (001) thin films and Pd layers was investigated at annealing temperatures between 250 and 650 °C using X-ray diffraction and magnetic measurements. No significant intermixing of the layers occurs at annealing temperatures below 400 °C. For the atomic composition 1Co:1Pd after annealing at 450 °C the disordered solid solution fcc-CoxPd1-x is formed on the Pd/hcp-Co (110) and Pd/fcc-Co (001) interfaces. Epitaxial relationships CoPd (110)〈-111〉 || MgO(001)〈100〉 and CoPd (001)〈100〉 || MgO(001)〈100〉 between the nucleated disordered phase CoPd and the substrate MgO(001) were determined for Pd/hcp-Co (110) and Pd/fcc-Co (001) bilayers, respectively. The first magnetocrystalline anisotropy constant of the disordered CoPd phase K1CoPd = - (1.8 ± 0.4)·104 J/m3 for the (110) and (001) orientations was obtained.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Myagkov V. G., Zhigalov V. S., Bykova L. E., Bondarenko G. N., Rybakova A. N., Matsynin A. A., Tambasov I. A., Volochaev M. N., Velikanov D. A.
Заглавие : High rotatable magnetic anisotropy in epitaxial L10CoPt(111) thin films
Место публикации : JETP Letters. - 2015. - Vol. 102, Is. 6. - P.355-360. - ISSN 00213640 (ISSN), DOI 10.1134/S0021364015180101
Примечания : Cited References: 51. - A We are grateful to L.A. Solov'ev for the help in X-ray studies of the epitaxial orientation of phases in L10CoPt(111) samples. This work was supported by the Russian Foundation for Basic Research (project no. 15-02-00948), in part by the Council the President of the Russian Federation for Support of Young Scientists and Leading Scientific Schools (project no. SP-317.2015.1), and by the Foundation for the Assistance of the Development of Small Innovative Scientific and Engineering Enterprises (UMNIK).
Предметные рубрики: Co-Pt ALLOYS
ROOM-TEMPERATURE
COERCIVITY
ORIGIN
ORDER
STATE
Аннотация: The evolution of the structural and magnetic properties in epitaxial film systems Co/Pt(111) of equiatomic composition during vacuum annealing has been presented. Annealing to the temperature of 400°C does not lead to the variation of the structural and magnetic properties of the films, which indicates the absence of considerable mixing of the Co/Pt interface. With the increase in the annealing temperature from 400 to 750°C, nanoclusters containing the main magnetically hard L10CoPt(111) phase epitaxially intergrown with the CoPt3 phase are formed. High rotatable magnetic anisotropy has been found in the prepared films. In magnetic fields above the coercive force (H > HC = 8 kOe), the easy anisotropy axis with the angle of lag taken into account can be oriented in any spatial direction. Possible mechanisms of the formation of the rotatable magnetic anisotropy have been discussed. It has been assumed that the high rotatable magnetic anisotropy makes the main contribution to the magnetic perpendicular anisotropy in CoxPt1–x films. © 2015, Pleiades Publishing, Inc.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Myagkov V. G., Zhigalov V. S., Bykova L. E., Bondarenko G. N., Rybakova A. N., Мацынин, Алексей Александрович, Tambasov I. A., Volochaev M. N.
Заглавие : High rotatable magnetic anisotropy in hard ferromagnetic thin films
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium, Институт физики им. Л.В. Киренского Сибирского отделения РАН
Место публикации : VI Euro-Asian Symposium "Trends in MAGnetism" (EASTMAG-2016): abstracts/ ed.: O. A. Maksimova, R. D. Ivantsov. - Krasnoyarsk: KIP RAS SB, 2016. - Ст.P10.7. - P.475. - ISBN 978-5-904603-06-9 (Шифр -478014040)
Примечания : References: 1. - This study was supported by the RFBR (grants ## 15-02-00948, 16-03-00069) and partially by «UMNIK» program
Ключевые слова (''Своб.индексиров.''): solid-state reaction--fept--copt--magnetic anisotropy--nanofilms
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Myagkov V. G., Bykova L. E., Yakovchuk V. Yu., Matsynin A. A., Velikanov D. A., Patrin G. S., Yurkin G. Yu., Bondarenko G. N.
Заглавие : High rotatable magnetic anisotropy in MnBi thin films
Место публикации : JETP Letters. - 2017. - Vol. 105, Is. 10. - P.651-656. - ISSN 00213640 (ISSN), DOI 10.1134/S0021364017100095
Примечания : Cited References: 38
Аннотация: The variations of the structural and magnetic properties of Bi/Mn/Bi and Mn/Bi/Mn trilayer film systems of equiatomic composition in the process of vacuum annealing are studied. The annealing of Bi/Mn/Bi films at a temperature of 270°C for an hour results in the synthesis of the well-studied highly oriented low-temperature LT-MnBi(001) phase with the perpendicular magnetic anisotropy Ku ∼ 1.1 × 107 erg/cm3 and coercivity HC ∼ 1.5 kOe. In contrast to Bi/Mn/Bi, polycrystalline LT-MnBi nanoclusters are formed in Mn/Bi/Mn films under the same annealing conditions. A high rotatable magnetic anisotropy exceeding the shape anisotropy is detected in the films under consideration: the easy axis of anisotropy with the inclusion of the delay angle in magnetic fields above the coercivity H HC = 9.0 kOe can be oriented in any spatial direction. It is shown that the nature of rotatable magnetic anisotropy is due to the structural coexistence of epitaxially coupled LT-MnBi and QHTP-Mn1.08Bi phases. The reported experimental results indicate the existence of a new class of ferromagnetic film media with the spatially tunable easy axis.
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Matsynin A. A., Myagkov V. G., Bykova L. E., Zhigalov V. S., Tambasov I. A.
Заглавие : Long-range chemical interactions in thin film solid state reactions: formation of Mn5Ge3 in Ge/Ag/Mn trilayers
Коллективы : Менделеевский съезд по общей и прикладной химии, Уральское отделение РАН
Место публикации : XX Mendeleev congr. on general and appl. chem.: Five-volumes book of abstracts. - 2016. - Vol. 2a: Chemistry and technology of materials and nanomaterials. - P.421
Примечания : Библиогр.: 1 назв.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhigalov V. S., Myagkov V. G., Bykova L. E., Bondarenko G. N., Matsynin A. A., Volochaev M. N.
Заглавие : Magnetic and structural properties of Fe87Pt13–Al2O3 composite thin films synthesized by solid-state reactions
Место публикации : Phys. Solid State: Maik Nauka-Interperiodica Publishing, 2017. - Vol. 59, Is. 2. - P.392-398. - ISSN 10637834 (ISSN), DOI 10.1134/S1063783417020354
Примечания : Cited References: 29. - This study was supported by the Russian Foundation for Basic Research, projects nos. 16-03-00069 and 15-02-00948.
Аннотация: The structural and magnetic properties of Fe87Pt13 films synthesized by solid-state reactions and Fe87Pt13–Al2O3 composite films fabricated by aluminothermy are investigated. It is shown that the synthesized samples of both types are characterized by the rotational magnetic anisotropy, when the easy magnetization axis in the film plane can be set by a magnetic field. It is established that the value of rotational magnetic anisotropy in the Fe87Pt13–Al2O3 composite films is higher than in the Fe87Pt13 samples by an order of magnitude. The rotational magnetic anisotropy is assumed to be caused by the exchange coupling of the L10–FePt phase with the L12–Fe3Pt phase in the Fe87Pt13 films and magnetic iron oxides in the Fe87Pt13–Al2O3 samples. © 2017, Pleiades Publishing, Ltd.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bykova L. E., Myagkov V. G., Zhigalov V. S., Matsynin A. A., Velikanov D. A., Bondarenko G. N., Patrin G. S.
Заглавие : Magnetic and structure properties of CoPt-In2O3 nanocomposite films
Коллективы : Russian Foundation for Basic Research, Government of Krasnoyarsk Territory [19-43-240003]
Место публикации : J. Sib. Fed. Univ. Math. Phys. - 2020. - Vol. 13, Is. 4. - P.431-438. - ISSN 1997-1397, DOI 10.17516/1997-1397-2020-13-4-431-438; Журн. СФУ. Матем. и физика. - ISSN 2313-6022(eISSN)
Примечания : Cited References: 29. - This study was supported by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research projects no. 19-43-240003
Предметные рубрики: THIN-FILMS
TEMPERATURE
PHASE
Аннотация: The structural and magnetic properties of CoPt-In2O3 nanocomposite films formed by vacuum annealing of the In/(Co3O4 + Pt)/MgO film system in the temperature range of 100–800 °C have been investigated. The synthesized nanocomposite films contain ferromagnetic CoPt grains with an average size of 5nm enclosed in an In2O3 matrix, and have a magnetization of 600 emu/cm3, and a coercivity of 150 Oe at room temperature. The initiation 200 °C and finishing 800 °C temperatures of synthesis were determined, as well as the change in the phase composition of the In/(Co3O4 + Pt)/MgO film during vacuum annealing.Исследованы структурные и магнитные свойства нанокомпозитных пленок CoPt- In2O3, полученных вакуумным отжигом пленочной системы In/(Co3O4 + Pt)/MgO в интервале температур 100 – 800 °C. Синтезированные нанокомпозитные пленки содержали ферромагнитные CoPt-кластеры со средним размером 5 nm, заключенные в матрицу In2O3, и имели намагниченность 600 emu/cm3, коэрцитивную силу 150 Oe при комнатной температуре. Определены температуры начала 200 °C и окончания 800 °C синтеза, а также изменение фазового состава пленки In/(Co3O4 + Pt)/MgO при вакуумном отжиге.
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13.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Komogortsev S. V., Chekanova L. A., Denisova E. A., Shabanova O. G., Shabanov A. V., Nemtsev I. V., Neznakhin D. S., Fel’k V. A., Matsynin A. A., Iskhakov R. S.
Заглавие : Magnetic coatings on the spherical sub-micron particles
Коллективы : 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", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : 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. 2. - Ст.J.P26. - P.234. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
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14.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Tambasov I. A., Gornakov K. O., Maygkov V. G., Bykova L. E., Zhigalov V. S., Matsynin A. A., Yozhikova E. V.
Заглавие : Magneto-transport properties of the nanocomposite of the nanocomposite Fe-In2O3 thin films
Коллективы : "Деформация и разрушение материалов и наноматериалов", международная конференция, Российская академия наук, Институт металлургии и материаловедения им. А. А. Байкова РАН, "Деформация и разрушение материалов", журнал, Межгосударственный координационный совет по физике прочности и пластичности, "INSTRON" (ООО "НОВАТЕСТ"), корпорация
Место публикации : VI междунар. конф. "Деформация и разрушение материалов и наноматериалов" (DFMN-15): сборник материалов. - М.: ИМЕТ РАН, 2015. - С. 521-522. - ISBN 2413-2209
Примечания : Библиогр.: 4 назв.
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15.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Чеканова, Лидия Александровна, Денисова, Елена Александровна, Исхаков, Рауф Садыкович, Черемискина, Елена Владимировна, Мацынин, Алексей Александрович, Ярославцев, Роман Николаевич, Столяр, Сергей Викторович
Заглавие : Mагнитные покрытия (Co1-xNix)-C, изготовленные в результате восстановления солей металлов с помощью арабиногалактана
Коллективы : Байкальская международная конференция "Магнитные материалы. Новые технологии", "Магнитные материалы. Новые технологии", Байкальская международная конференция, "Magnetic materials. New tecnologies", Baikal International Conference, Иркутский государственный университет
Место публикации : Магнитные материалы. Новые технологии: тез. докл. VIII Байкал. междунар. конф. BICMM-2018/ чл. прогр. ком. R. S. Iskhakov [et al.]. - Иркутск, 2018. - С. 83. - ISBN 978-5-00133-051-6
Примечания : Библиогр.: 2
РИНЦ,
Материалы конференции,
Материалы конференции,
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Myagkov V. G., Bykova L. E., Zhigalov V. S., Matsynin A. A., Velikanov D. A., Bondarenko G. N.
Заглавие : Phase formation sequence, magnetic and structural development during solid-state reactions in 72Pt/28fcc-Co (001) thin films
Место публикации : J. Alloys Compd.: Elsevier, 2017. - Vol. 706. - P.447-454. - ISSN 09258388 (ISSN), DOI 10.1016/j.jallcom.2017.02.261
Примечания : Cited References: 72. - This study was supported by the Russian Foundation for Basic Research (Grant # 15-02-00948-a, 16-03-00069-a). The XPS and TEM studies were carried out using the facilities of the Performance Service at Krasnoyarsk Scientific Center.
Ключевые слова (''Своб.индексиров.''): l10 copt--l12 copt3--solid state reactions--phase formation sequence--perpendicular magnetic anisotropy--magnetic rotatable anisotropy
Аннотация: The phase formation sequence during the thermally induced solid-state reaction between polycrystalline Pt and epitaxial fcc-Co (001) films in the Pt/fcc-Co(001) bilayers are systematically examined using X-ray diffraction and magnetic measurements. The films have nominal atomic ratio Co:Pt = 28:72 and total thickness 300–400 nm. Annealing to the temperature of 375 °C does not change the structural and magnetic properties of the films; this is indicative of the absence of considerable mixing at the Co/Pt interface. With the subsequent increase of the annealing temperature, the phase formation in the Pt/fcc-Co(001) bilayers has been found to have two temperature (375 °C–575 °C and 575 °C–825 °C) intervals. Solid-state reaction between Pt and Co starts above 375 °C, and nanoclusters containing the ordered L10 phase epitaxially intergrow with the disordered A1 phase of the composition CoPt3 form and exist in the first temperature interval. The distinctive feature of the first interval is the formation of in-plane rotatable magnetic anisotropy. In the second temperature interval, the (L10 + A1) two-phase mixture grows into the ordered L12-CoPt3 phase leading to the disappearance of rotatable anisotropy. Possible origin of the rotatable magnetic anisotropy is discussed. The first magnetocrystalline anisotropy constant of L12-CoPt3 has the maximum value of −5.0·105egr/cm3 and order parameter 0.55 at 675 °C. A careful analysis of thin film solid-state reactions implies the existence of low-temperature transformation (∼375 °C) on the Pt-rich side of the Co-Pt system.
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhigalov V. S., Myagkov V. G., Bayukov O. A., Bykova L. E., Bondarenko G. N., Matsynin A. A.
Заглавие : Phase transformations in Mn/Fe(001) films: Structural and magnetic investigations
Коллективы : Russian Foundation for Basic Research [07-03-00190]; Ministry of Education and Science of the Russian Federation [2.1.1/4399]
Место публикации : JETP Letters. - 2009. - Vol. 89, Is. 12. - P.621-625. - ISSN 0021-3640, DOI 10.1134/S0021364009120066
Примечания : Cited References: 36. - This work was supported by the Russian Foundation for Basic Research (project no. 07-03-00190) and by the Ministry of Education and Science of the Russian Federation (project no. 2.1.1/4399, program " Development of the Scientific Potentiality of Higher Education" in 2009- 2010).
Предметные рубрики: HIGH-TEMPERATURE SYNTHESIS
SOLID-STATE SYNTHESIS
FE-MN
THIN-FILMS
MARTENSITIC TRANSFORMATIONS
KINETICS
ALLOY
Аннотация: The solid-phase synthesis in epitaxial Mn/Fe(001) bilayer film systems with 24 at % of Mn has been shown to start at a temperature of 220A degrees C with the formation of a gamma-austenite lattice and the Mn and Fe films react completely under annealing to 600A degrees C. In the sample cooling process after annealing below 220A degrees C, the gamma austenite undergoes a martensitic transformation to an oriented a(100) martensite. When the annealing temperature is increased above 600A degrees C, Mn atoms migrate from the gamma-lattice, which becomes unstable, and the film is partially again transformed to the epitaxial Fe(001) layer. The solid-phase synthesis in Mn/Fe(001) bilayer nanofilms and multilayers is assumingly determined by the inverse epsilon - gamma martensitic transformation in the Mn-Fe system. The existence of a new low-temperature (similar to 220A degrees C) structure transition in the Mn-Fe system with a high iron content is assumed.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Myagkov V. G., Zhigalov V. S., Matsynin A. A., Bykova L. E., Bondarenko G. V., Bondarenko G. N., Patrin G. S., Velikanov D. A.
Заглавие : Phase transformations in the Mn-Ge system and in Ge x Mn1-x diluted semiconductors
Место публикации : JETP Letters. - 2012. - Vol. 96, Is. 1. - P.40-43. - ISSN 0021-3640, DOI 10.1134/S0021364012130097
Примечания : Cited References: 36
Предметные рубрики: HIGH-PRESSURE SYNTHESIS
MAGNETIC-PROPERTIES
THIN-FILMS
Аннотация: Results of an X-ray diffraction study as well as magnetic and electrical measurements of the solid-state reactions in Ge/Mn polycrystalline films of an 80/20 atomic composition have been presented. It has been shown that the ferromagnetic Mn5Ge3 phase is formed first on the Ge/Mn interface after annealing at similar to 120A degrees C. The further increase in the annealing temperature to 300A degrees C leads to the beginning of the synthesis of the Mn11Ge8 phase, which becomes dominating at 400A degrees C. The existence of new structural transitions in the Mn-Ge system in the region of similar to 120 and similar to 300A degrees C has been predicted on the basis of the presented results and results obtained earlier when studying solid-state reactions in different film structures. The supposition about the general chemical mechanisms of the synthesis of the Mn5Ge3 and Mn11Ge8 phases during the solid-state reactions in the Ge/Mn films of the 80/20 atomic composition and the phase separation in Ge (x) Mn1 - x (x 0.95) diluted semiconductors has been substantiated.
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Voronin A. S., Simunin M. M., Ivanchenko F. S., Shiverskii A. V., Fadeev, Yu. V., Tambasov I. A., Nemtsev I. V., Matsynin A. A., Khartov S. V.
Заглавие : Preparation and investigation of composite transparent electrodes of poly(3, 4-ethylenedioxythiophene) polystyrene sulfonate/single-wall carbon nanotubes
Коллективы : Russian Foundation for Basic Research [16-32-00302 mol_a]; RFBR; Government of Krasnoyarsk Krai; Krasnoyarsk Krai Foundation [16-42-243059 r_mol_a, 16-42-243006 r_mol_a, 16-48-242092 r_ofi_m]
Место публикации : Tech. Phys. Lett.: MAIK Nauka-Interperiodica / Springer, 2017. - Vol. 43, Is. 9. - P.783-786. - ISSN 1063-7850, DOI 10.1134/S1063785017090127. - ISSN 1090-6533(eISSN)
Примечания : Cited References:7. - This study was supported by the Russian Foundation for Basic Research (RFBR project no. 16-32-00302 mol_a) and jointly by the RFBR, Government of Krasnoyarsk Krai, and the Krasnoyarsk Krai Foundation for the Support of Scientific and Technological Work within scientific projects nos. 16-42-243059 r_mol_a, 16-42-243006 r_mol_a, and 16-48-242092 r_ofi_m.
Предметные рубрики: SOLAR-CELLS
Аннотация: The preparation of composite transparent electrodes of poly(3, 4-ethylenedioxythiophene) polystyrene sulfonate/single-wall carbon nanotubes by the spray method is described. The influence of the successive treatment of each functional layer in acid media with different activities on the optical and electric film characteristics is considered. The composite with the surface resistance of 89 Ω/sq at the transparency of 85.3% (550 nm) on a polymer substrate is obtained.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Tambasov I. A., Gornakov K. O., Myagkov V. G., Bykova L. E., Zhigalov V. S., Matsynin A. A., Yozhikova E. V.
Заглавие : Room temperature magneto-transport properties of nanocomposite Fe–In2O3 thin films
Место публикации : Physica B. - 2015. - Vol. 478. - P.135-137. - ISSN 0921-4526, DOI 10.1016/j.physb.2015.08.054
Примечания : Cited References: 28. - This study was supported by the Russian Foundation for Basic Research (Grants # 15-02-00948-A,), by the Council for Grants of the President of the Russian Federation (SP-317.2015.1), and by the program of Foundation for Promotion of Small Enterprises in Science and Technology (No 6662 FY2015) ("UMNIK" program).
Предметные рубрики: Doped In2O3 Films
High-performance
Indium oxide
Transistors
Magnetoresistance
Ferromagnetism
Ключевые слова (''Своб.индексиров.''): indium oxide--fe-in2o3 thin films--weak localization--disordered semiconductors
Аннотация: A ferromagnetic Fe–In2O3 nanocomposite thin film has been synthesized by the thermite reaction Fe2O3+In→Fe–In2O3. Measurements of the Hall carrier concentration, Hall mobility and magnetoresistance have been conducted at room temperature. The nanocomposite Fe–In2O3 thin film had n=1.94·1020 cm−3, μ=6.45 cm2/Vs and negative magnetoresistance. The magnetoresistance for 8.8 kOe was ~−0.22%.The negative magnetoresistance was well described by the weak localization and model proposed by Khosla and Fischer.
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