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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Smolyakov D. A., Gustaitsev A. O., Volkov N. V.
Заглавие : Bias-controlled magnetoimpedance effect in a mis structure
Коллективы : Moscow International Symposium on Magnetism
Место публикации : Moscow Int. Symp. on Magnet. (MISM-2014): Book of abstracts. - 2014. - Ст.1PO-K-8. - P.541. - ISBN 978-5-91978-025-0
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Volkov N.V., Eremin E.V.,, Tarasov A.S., Varnakov S.N., Ovchinnikov S.G.
Заглавие : Bias-current and optically driven transport properties of the hybrid Fe/Si02/p-Si structures
Коллективы : Moscow International Symposium on Magnetism
Место публикации : Moscow Int. Symp. on Magnet. (MISM-2011): Book of abstracts. - 2011. - Ст.22PO-I-10. - P.109
Примечания : Библиогр.: 1. - This study was supported by the Russian Foundation for Basic research, project no. 11-02-00367-a; Presidium of the Russian Academy of Sciences, program 21.1; the Division for Physical Sciences of the Russian Academy of Sciences, program 2.4.4.1; the Siberian Branch of the Russian Academy of Sciences, projects nos. 5 and 134; and the Federal target program, State contract NK-556P_15.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Volkov N. V., Eremin E. V., Tarasov A. S., Varnakov S. N., Ovchinnikov S. G.
Заглавие : Bias-current and optically driven transport properties of the hybrid Fe/SiO 2/p-Si structures
Коллективы : Moscow International Symposium on Magnetism
Место публикации : Diffusion and Defect Data Pt.B: Solid State Phenomena. - 2012. - Vol. 190. - P.526-529. - ISBN 1012-0394, DOI 10.4028/www.scientific.net/SSP.190.526. - ISBN 9783037854365
Ключевые слова (''Своб.индексиров.''): hybrid structure--mis transition--photoelectric effect--schottky barrier--channel switching--comparative analysis--electron hole pairs--fe films--fe layer--ferromagnetic films--hybrid structure--optical effects--optical radiations--photogeneration--planar geometries--schottky barriers--semiconductor substrate--temperature variation--critical currents--interfaces (materials)--magnetic materials--photoelectricity--schottky barrier diodes--silicon--switching circuits--transport properties
Аннотация: Pronounced optical- and bias-current-sensitive features of the transport properties of a Fe/SiO 2/p-Si hybrid structure in planar geometry at temperature variation are investigated. Comparative analysis of two Fe/SiO 2/p-Si samples, one with a continuous Fe film and the other with two electrodes formed from a Fe layer and separated by a micron gap, shows that these features are due to the MIS transition with a Schottky barrier near the interface between SiO 2 and p- Si. Resistance of such a MIS transition depends exponentially on temperature and bias. In the structure with a continuous ferromagnetic film, the competition between conductivities of the MIS transition and the Fe layer results in the effect of current channel switching between the Fe layer and a semiconductor substrate. Within certain limits, this process can be controlled by a bias current and optical radiation. The mechanism of the optical effect is photogeneration of electron-hole pairs in the semiconductor substrate near its boundary with SiO 2 layer. В© (2012) Trans Tech Publications.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volkov N. V., Tarasov A. S., Smolyakov D. A., Varnakov S. N., Ovchinnikov S. G.
Заглавие : Bias-voltage-controlled ac and dc magnetotransport phenomena in hybrid structures
Коллективы : Moscow International Symposium on Magnetism , Russian Foundation for Basic Research [14-02-00234-a, 14-02-31156], Presidium of the Russian Academy of Sciences [20.8], Ministry of Education and Science of the Russian Federation [02.G25.31.0043]
Место публикации : J. Magn. Magn. Mater./ Moscow International Symposium on Magnetism (6th ; Moscow) (29 June – 3 July 2014): Elsevier Science, 2015. - Vol. 383. - P.69-72. - ISSN 0304-8853, DOI 10.1016/j.jmmm.2014.11.014
Примечания : Cited References:15. - This study was supported by the Russian Foundation for Basic Research, Projects nos. 14-02-00234-a and 14-02-31156, the Presidium of the Russian Academy of Sciences, Program Quantum Mesoscopic and Disordered Structures, Project no. 20.8 and the Ministry of Education and Science of the Russian Federation, Project no. 02.G25.31.0043.
Предметные рубрики: SILICON
SPINTRONICS
FIELD
Ключевые слова (''Своб.индексиров.''): spintronics--hybrid structures--magnetoresistance--magnetoimpedance--photoinduced magnetoresistance
Аннотация: We report some ac and dc magnetotransport phenomena in silicon-based hybrid structures. The giant impedance change under an applied magnetic field has been experimentally found in the metal/insulator/semiconductor (MIS) diode with the Schottky barrier based on the Fe/SiO2/p-Si and Fe/SiO2/n-Si structures. The maximum effect is found to observe at temperatures of 10-30 K in the frequency range 10 Hz-1 MHz, Below 1 kHz the magnetoresistance can be controlled in a wide range by applying a bias to the device. A photoinduced dc magnetoresistance of over 104% has been found in the Fe/SiO2/p-Si back-to-back Schottky diode. The observed magnetic-field-dependent effects are caused by the interface states localized in the insula-tor/semiconductor interface. (C) 2014 Elsevier B.V. All rights reserved.
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Volkov N. V., Tarasov A. S., Smolyakov D. A., Varnakov S. N., Ovchinnikov S. G.
Заглавие : Bias-voltage-controlled AC and DC magnetotransport phenomena in hybrid structures
Коллективы : Moscow International Symposium on Magnetism
Место публикации : Moscow Int. Symp. on Magnet. (MISM-2014): 29 June - 3 July 2014 : вook of abstracts. - 2014. - Ст.1RP-A-10. - P.315. - ISBN 978-5-91978-025-0
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Burkov S. I., Zolotova O. P., Turchin P. P., Sorokin B. P., Aleksandrov K. S.
Заглавие : Calculation of thermostable directions and the influence of bias electricfield on the propagation of the Lamb and SH waves in langasite single crystalplates
Коллективы : IEEE International ultrasonics symposium
Место публикации : Proceedings - IEEE Ultrasonics Symposium. - 2010. - Ст.5935458. - P.1853-1856. - ISBN 1051, DOI 10.1109/ULTSYM.2010.5935458. - ISBN 9781457703829
Ключевые слова (''Своб.индексиров.''): dc electric field influence--lamb wave--sh-wave--thermostability--bias electric fields--dc electric field--lamb wave--langasite crystals--langasites--sh wave--single-crystal plates--temperature coefficient--thermostability--computer simulation--electromechanical coupling--shear waves--single crystals--ultrasonics--electric fields--electric fields--shear waves
Аннотация: Paper is presented the results of computer simulation. Effect of the dcelectric field influence on the propagation of Lamb and SH waves and itstemperature coefficients of delay in piezoelectric langasite crystal plate for alot of cuts and directions have been calculated. There were found the cutspossessing the thermostability and sufficient electromechanical coupling. В©2010 IEEE.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gorban A., Popova T., Zinovyev A.
Заглавие : Codon usage trajectories and 7-cluster structure of 143 complete bacterial genornic sequences
Разночтения заглавия :авие SCOPUS: Codon usage trajectories and 7-cluster structure of 143 complete bacterial genomic sequences
Место публикации : Physica A: ELSEVIER SCIENCE BV, 2005. - Vol. 353. - P365-387. - ISSN 0378-4371, DOI 10.1016/j.physa.2005.01.043
Примечания : Cited References: 46
Предметные рубрики: DNA-BASE COMPOSITION
ASYMMETRIC SUBSTITUTION PATTERNS
PROTEIN-CODING REGIONS
MICROBIAL GENOMES
GENE IDENTIFICATION
MARKOV-MODELS
G+C CONTENT
BIAS
PREDICTION
SELECTION
Ключевые слова (''Своб.индексиров.''): genome--cluster--codon usage--correlations--entropy--mean field--cluster--codon usage--correlations--entropy--genome--mean field--approximation theory--correlation methods--database systems--entropy--functions--genes--mathematical models--clusters--codon usage--genomes--mean field--bacteria
Аннотация: Three results are presented. First, we prove the existence of a universal 7-cluster structure in all 143 completely sequenced bacterial genomes available in Genbank in August 2004, and explained its properties. The 7-cluster structure is responsible for the main part of sequence heterogeneity in bacterial genomes. In this sense, our 7 clusters is the basic model of bacterial genome sequence. We demonstrated that there are four basic "pure" types of this model, observed in nature: "parallel triangles", "perpendicular triangles", degenerated case and the flower-like type. Second, we answered the question: how big are the position-specific information and the contribution connected with correlations between nucleotide. The accuracy of the mean-field (context-free) approximation is estimated for bacterial genomes. We show that codon us-age of bacterial genomes is a multi-linear function of their genomic G+C-content with high accuracy (more precisely, by two similar functions, one for eubacterial genomes and the other one for archaea). Description of these two codon-usage trajectories is the third result. All 143 cluster animated 3D-scatters are collected in a database and is made available on our web-site: http://www.ihes.fr/similar to zinovyev/7clusters. (c) 2005 Elsevier B.V. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chzhan A. V., Patrin G. S., Kiparisov S. Ya., Seredkin V. A.
Заглавие : Coercivity and exchange bias in magnetic sandwich structure prepared by chemical deposition
Коллективы : Moscow International Symposium on Magnetism
Место публикации : Solid State Phenomena: Selected, peer reviewed papers/ ed.: N. Perov, V. Rodionova. - Stafa-Zurich: Trans Tech Publications, 2012. - Vol. 190: Magnetism and Magnetic Materials V : Selected, Peer Reviewed Papers. - P.463-465. - ISSN 1662-9779, DOI 10.4028/www.scientific.net/SSP.190.463. - ISSN 978-303785436-5
Примечания : Cited References: 5
Ключевые слова (''Своб.индексиров.''): sandwich structure--exchange bias--coercivity--magnetization reversal
Аннотация: Exchange bias and coercivity of the hysteresis loop of a low-coercive layer in magnetic three-layered structure prepared by chemical deposition are studied. It is established that the coercive force in the films obtained nonmonotonically changed with the low-coercive layer thickness. The specificity of magnetization reversal of exchange-biased layers is analyzed.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gritsenko C., Lepalovskij V., Volochaev M. N., Komanicky V., Gorkovenko A., Pazniak H., Gazda M., Andreev N., Rodionova V.
Заглавие : Complex study of magnetization reversal mechanisms of FeNi/FeMn bilayers depending on growth conditions
Место публикации : Nanomaterials. - 2022. - Vol. 12, Is. 7. - Ст.1178. - ISSN 20794991 (ISSN), DOI 10.3390/nano12071178
Примечания : Cited References: 44. - This work has been supported by the grant of the Slovak Research and Development Agency under the contract No APVV-20-0324. This work was in part financially supported by the Ministry of Science and Higher Education of the Russian Federation, Subject of the state task No. FEUZ-2020-0051
Аннотация: Magnetization reversal processes in the NiFe/FeMn exchange biased structures with various antiferromagnetic layer thicknesses (0–50 nm) and glass substrate temperatures (17–600 °C) during deposition were investigated in detail. Magnetic measurements were performed in the temperature range from 80 K up to 300 K. Hysteresis loop asymmetry was found at temperatures lower than 150 K for the samples with an antiferromagnetic layer thickness of more than 10 nm. The average grain size of FeMn was found to increase with the AFM layer increase, and to decrease with the substrate temperature increase. Hysteresis loop asymmetry was explained in terms of the exchange spring model in the antiferromagnetic layer.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kim P. D., Yu S. C., Patrin G. S., Song Y. Y., Turpanov I. A., Khalyapin D. L., Marushchenko D. A.
Заглавие : Effect of the nonmagnetic layer in a Co/Cu/CoO trilayer structure on the exchange coupling in it
Место публикации : J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 112, Is. 4. - P612-616. - ISSN 1063-7761, DOI 10.1134/S1063776111030058
Примечания : Cited References: 21
Предметные рубрики: SPACER LAYER
BIAS
ANISOTROPY
Ключевые слова (''Своб.индексиров.''): cobalt layers--copper layer--exchange bias--interlayer exchange coupling--nonmagnetic layers--oscillation amplitude--temperature dependence--temperature range--trilayer film--trilayer structure--cobalt--crystal structure--epitaxial films--hysteresis--hysteresis loops--magnetic materials--exchange coupling
Аннотация: The dependence of the exchange bias of epitaxial single-crystal Co/Cu/CoO trilayer films on the copper layer thickness and temperature is studied. The exchange bias of the hysteresis loops of the ferromagnetic cobalt layer as a function of the copper layer thickness is found to have a well-pronounced oscillating character. The oscillations manifest themselves over the entire temperature range in which an exchange bias takes place (77-220 K). The complex variation of the oscillation amplitude with the nonmagnetic layer thickness can be explained by the superposition of two interlayer exchange coupling oscillation periods (lambda(1) a parts per thousand 10-11 , lambda(2) a parts per thousand 20 ) having differentamplitudes and temperature dependences.
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