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1.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Samoshkina Yu. E., Petrov D. A., Rautskii M. V., Neznakhin D. S., Stepanova E. A., Stepanov A. L.
Заглавие : Co nanoparticles localized in matrices of Various types: magnetooptical and magnetotransport properties
Коллективы : 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", "Trends in MAGnetism", Euro-Asian Symposium
Место публикации : 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.P14. - P.466-467. - ISBN 978-5-94469-051-7
Примечания : Cited References: 8. - This research was funded by the Russian Science Foundation grant No. 21-72-00061
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Samoshkina Yu. E., Edelman I. S., Rautskii M. V., Molokeev M. S.
Заглавие : Correlation between magneto-optical and transport properties of Sr doped manganite films
Место публикации : J. Alloys Compd. - 2019. - Vol. 782. - P.334-342. - ISSN 09258388 (ISSN) , DOI 10.1016/j.jallcom.2018.12.158
Примечания : Cited References: 51. - The authors are grateful to A.V. Malakhovskii (Kirensky Institute of Physics, Federal Research Center KSC SB RAS) for fruitful discussions of the magneto-optics data and V.I. Chichkov and N.V. Andreev (National University of Science and Technology MISiS) for the preparation of the manganite films. The work was supported partly by Russian Academy of Sciences , [grant number 0356-2017-0030 ], and the Russian Foundation for Basic Research , [grant number 16-32-00209 ].
Ключевые слова (''Своб.индексиров.''): thin films--manganites--crystal structure--electrical transport--electronic properties--magnetic circular dichroism
Аннотация: The features of electronic structure of La0.7Sr0.3MnO3 Pr0.8Sr0.2MnO3, and Pr0.6Sr0.4MnO3 polycrystalline films of different thickness have been investigated using magnetic circular dichroism (MCD) in the range of 1.1–4.2 eV. The temperature behavior of the samples electrical resistance were also has been studied. It was found that films with high Sr content (0.3 and 0.4) act as high-temperature semiconductors, while the maximum in the temperature dependences of resistivity these films indicates the transition of the samples to the metallic state at some temperature TM-S, which is different for different sample thickness. The films with the lower Sr content (0.2) act as insulators in the used temperature range. The MCD spectra have been decomposed to the Gaussian-shaped lines, and the temperature dependence of intensity of each line has been analyzed in comparison with temperature dependence of the films magnetization and with their electric conductivity type. Different temperature behavior of the intensity of four specified Gaussian-lines was revealed for semiconductor films. In the case of insulating Pr0.8Sr0.2MnO3 samples, the intensity of three specified Gaussian lines changes with the temperature in the same way as the magnetization changed. It was established that the lanthanide (La, Pr) type does not affect the MCD spectra shape for the films with the same electrical conductivity type. Besides, the correlation between the MCD data of the films and their conductivity type was revealed. Due to the detailed analysis of the specified Gaussian lines with taking into account the well-known in the literature absorption bands, lying outside the studied spectral region, the MCD bands for the studied manganite films have been identified with electronic transitions of a different nature.
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Samoshkina Yu. E., Rautskii M. V., Stepanova E. A., Neznakhin D. S., Andreev N. V., Chichkov V. I.
Заглавие : Determination of the existence region of a Griffith-like phase in Pr1–xSrxMnO3/YSZ films
Коллективы : Russian Foundation for Basic Research [16-32-00209mol_a]; Council for Grants from the President of the Russian Federation [NSh7559.2016.2]; RF Ministry of Education and Sciences [3.61212017/8.9]
Место публикации : J. Exp. Theor. Phys. - 2017. - Vol. 125, Is. 6. - P.1090-1095. - ISSN 1063-7761, DOI 10.1134/S106377611712007X. - ISSN 1090-6509(eISSN)
Примечания : Cited References:34. - This study was supported by the Russian Foundation for Basic Research (project no. 16-32-00209mol_a) and the Council for Grants from the President of the Russian Federation (NSh7559.2016.2). E. A. Stepanova and D. S. Neznakhin were supported by the RF Ministry of Education and Sciences (State target no. 3.61212017/8.9).
Предметные рубрики: COLOSSAL MAGNETORESISTANCE
ELECTRICAL-PROPERTIES
RARE-EARTH
Аннотация: We have studied the temperature dependences of the magnetic susceptibility and the electron magnetic resonance in Pr1–xSrxMnO3/YSZ polycrystalline films (x = 0.2, 0.4). The paramagnetic properties of samples indicate the presence of short-range-order ferromagnetic correlations above the phase transition temperature (Tc ). The existence region of such correlations has been considered using the Griffith theory.
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Samoshkina Yu. E., Rogalev A.
Заглавие : Electronic and magnetic states of Pr and Mn in the Pr1–xSrxMnO3 films studied by XANES and XMCD spectroscopy
Место публикации : J. Exp. Theor. Phys. - 2018. - Vol. 126, Is. 5. - P.660-665. - ISSN 10637761 (ISSN), DOI 10.1134/S1063776118040131
Примечания : Cited References: 35. - We thank V.I. Chichkov and N.V. Andreev (National University of Science and Technology MISiS) for the preparation of the manganite films.This work was supported by the Russian Foundation for Basic Research (project no. 16-32-00209 mol_a) and a grant of the President of the Russian Federation (NSh-7559.2016.2).
Ключевые слова (''Своб.индексиров.''): circular dichroism spectroscopy--dichroism--film growth--magnetic moments--manganese--praseodymium--strontium compounds--x ray absorption
Аннотация: The spectral dependences of X-ray absorption near-edge spectroscopy (XANES) and X-ray magnetic circular dichroism (XMCD) and the field dependences of XMCD near the K edge of Mn and the L2,3 edges of Pr in the Pr0.8Sr0.2MnO3 and Pr0.6Sr0.4MnO3 films at T = 90 K are studied. The spectral dependences point to a mixed valence state of Mn and Pr in the films. It is found that, as compared to XANES, XMCD is more sensitive to the valence state of Pr4+. The field dependences of XMCD point to ferromagnetic behavior of Mn ions and the Van Vleck paramagnetism of Pr ions, which makes a significant contribution to the total magnetization of the films. It is shown that as the Sr concentration increases, the XMCD intensity at the K edge of Mn increases, which indicates a growth of the total magnetic moment of the film due to an increase in the 4p–3d hybridization.
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5.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Samoshkina Yu. E., Edelman I. S., Sokolov A. Е., Molokeev M. S., Maximova O. A., Andreev N. V., Chichkov V. I.
Заглавие : Features of the magneto-optical response in manganite films
Коллективы : Moscow International Symposium on Magnetism, Московский государственный университет им. М.В. Ломоносова, Российский фонд фундаментальных исследований
Место публикации : Moscow International Symposium on Magnetism (MISM-2017): 1-7 July 2017 : book of abstracts. - 2017. - Ст.5PO-K3-2. - P.1093 (Шифр 29916280)
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Edelman I. S., Chou, Hsiung, Samoshkina Yu. E., Petrov D. A., Lin, Hsien C., Chan, Wen L., Sun, Shih-Jye, Zharkov S. M., Bondarenko G. V., Platunov M. S., Rogalev A.
Заглавие : Giant hydrogen effect on the structure and physical properties of ZnO and Co-doped ZnO films fabricated by the RF magnetron sputtering in Ar + H2 atmosphere
Коллективы : Russian Academy of Sciences [0356-2017-0030]; Ministry of Science and Technology of Taiwan [MOST 106-2112-M-110-001]
Место публикации : J. Magn. Magn. Mater. - 2019. - Vol. 489. - Ст.165461. - ISSN 0304-8853, DOI 10.1016/j.jmmm.2019.165461. - ISSN 1873-4766(eISSN)
Примечания : Cited References: 39. - The work is supported by the Russian Academy of Sciences in the frames of Project No 0356-2017-0030 and by the Ministry of Science and Technology of Taiwan MOST 106-2112-M-110-001.
Предметные рубрики: MAGNETOOPTICAL PROPERTIES
OPTICAL-PROPERTIES
FERROMAGNETISM
Аннотация: ZnO and Co-doped ZnO films were synthesized by the radio frequency magnetron sputtering in mixed atmosphere of Ar + 20% O2 and Ar + 20–50% H2. The morphology, chemical composition, crystal structure, optical transmission, electrical resistance, and magnetic circular dichroism of the films were investigated. It was established that the films thickness decreased several times when Ar was partly replaced by hydrogen in the sputtering chamber. At the same time, for the Co-doped ZnO films, the increase in the relative Co content with the increasing hydrogen concentration was observed. These phenomena are explained by the formation of gaseous ZnH2 because of the hydrogen reaction with the growing films under the conditions of the high substrate temperature (450 °C) and, respectively, the decrease in the Zn component in the films. The hydrogenated Co-doped ZnO films exhibit an increase in electric conductivity and ferromagnetic behavior at room temperature. The magnetic nature of the films is explained by a combination of the intrinsic ferromagnetism (due to the formation of the Co-H-Co complex) with the inclusion of metallic Co clusters.
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7.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Samoshkina Yu. E., Rautskii M. V., Neznakhin D. S., Stepanova E., Andreev N. V., Chichkov V. I.
Заглавие : High-temperature martensitic transformation in Pr-Sr manganites
Коллективы : IEEE International Magnetics Conference
Место публикации : IEEE International Magnetics Virtual Conference (INTERMAG'21): Digest book. - 2021. - Ст.DP-08. - P.686
Примечания : Cited References: 8
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8.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Samoshkina Yu. E., Rautskii M. V., Neznakhin D. S., Stepanova E. A., Andreev N., Chichkov V. I.
Заглавие : Inhomogeneity of magnetic states in polycrystalline Sr doped PrMnO3 films
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.H.P10. - P.88-89. - ISBN 978-5-9500855-7-4 (Шифр В33/E12-125657784)
Примечания : Cited References: 3
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9.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Samoshkina Yu. E., Rautskii M. V., Andreev N. V., Chichkov V. I.
Заглавие : Inhomogeneity of the magnetic state in the Pr1-xSrxMnO3/YSZ films studied by electron magnetic resonance
Коллективы : International Workshop on Phase Transitions and Inhomogeneous States in Oxides, "Фазовые переходы и неоднородные состояния в оксидах", международный семинар
Место публикации : Int. Workshop on Phase Transit. and Inhomogeneous States in Oxides: book of abstracts/ чл. орг. ком. I. N. Flerov. - Kazan, 2017. - P.29
Примечания : Библиогр.: 4. - The work was supported by the Russian Foundation for Basic Researches, Grant No. 16-32-00209 mol_a and the Grant of the President of the Russian Federation no. NSh-7559.2016.2
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10.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Samoshkina Yu. E., Edelman I. S., Sokolov A. E., Rautskii M. V., Semenov S. V., Andreev N. V., Chichkov V. I.
Заглавие : La-Sr and Pr-Sr polycrystalline manganite films: correlation between magneto-optical and transport properties
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.P6.7. - P.315. - ISBN 978-5-904603-06-9 (Шифр -478014040)
Примечания : The work was supported partly by the Russian Foundation for Basic Researches, Grants Nos. 14-02-01211 and 16-32-00209
Ключевые слова (''Своб.индексиров.''): hole-doped manganites--thin films--magnetic circular dichroism--metal-insulator transition
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