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Nonlinear electromechanical nronerties and acoustic waves propagation in la3Ga5SiO14 single crystals under the.bias static fields / K. S. Aleksandrov [и др.] // Izv RAN Ser Fiz. - 1996. - Vol. 60, Is. 10. - P. 103-105 . - ISSN 0367-6765

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Доп.точки доступа:
Aleksandrov, K. S.; Turchin, P. P.; Sorokin, B. P.; Burkov, S. I.
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Gorban, A.
Codon usage trajectories and 7-cluster structure of 143 complete bacterial genornic sequences / A. . Gorban, T. . Popova, A. . Zinovyev // Physica A. - 2005. - Vol. 353. - P. 365-387, DOI 10.1016/j.physa.2005.01.043. - Cited References: 46 . - ISSN 0378-4371

РУБ Physics, Multidisciplinary
Рубрики:
DNA-BASE COMPOSITION
   ASYMMETRIC SUBSTITUTION PATTERNS
   PROTEIN-CODING REGIONS
   MICROBIAL GENOMES
   GENE IDENTIFICATION
   MARKOV-MODELS
   G+C CONTENT
   BIAS
   PREDICTION
   SELECTION
Кл.слова (ненормированные):
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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Держатели документа:
Univ Leicester, Dept Math, Leicester LE1 7RH, Leics, England
RAS, SB, Inst Computat Modelling, Krasnoyarsk, Russia
Bures Sur Yvette & Bioinformat Serv Inst Curie, Inst Hautes Etudes Sci, Paris, France
ИВМ СО РАН
Department of Mathematics, University of Leicester, Leicester, University Road, Leicester LE1 7RH, United Kingdom
Institute of Computational Modelling, SB RAS, Krasnoyarsk, Russian Federation
Institut des Hautes Etudes Scientifiques, Bures-sur-Yvette and Bioinformatics Service of Institut Curie, Paris, France

Доп.точки доступа:
Popova, T.; Zinovyev, A.
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Reflection and refraction of bulk acoustic waves in piezoelectric crystals under the action of bias electric field and uniaxial pressure / S. I. Burkov [et al.] // Proceedings - IEEE Ultrasonics Symposium. - 2008. - Ст. 4803254. - P. 2161-2164, DOI 10.1109/ULTSYM.2008.0535 . - ISBN 1051-0117
Кл.слова (ненормированные):
Bias electric field -- Bulk elastic wave -- Mechanical stress -- Piezoelectric crystal -- Reflection -- Refraction -- Bias electric field -- Bulk acoustic waves -- Bulk elastic wave -- Mechanical stress -- Piezoelectric crystal -- Piezoelectric crystals -- Uniaxial pressures -- Acoustic wave reflection -- Acoustics -- Crystals -- Elastic waves -- Elasticity -- Electric field measurement -- Electric fields -- Piezoelectric materials -- Piezoelectric transducers -- Piezoelectricity -- Refraction -- Soil structure interactions -- Stresses
Аннотация: Main theory results concerned with bulk elastic wave reflection/refraction on the boundary between two piezoelectric crystals subjected to the action of bias electric field or mechanical stress have presented. Some calculations for LiNbO3 and Bi12GeO20 crystals have made. В©2008 IEEE.

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Доп.точки доступа:
Burkov, S. I.; Sorokin, B. P.; Karpovich, A. A.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; IEEE International ultrasonics symposium(2008 ; Nov. ; 2-5 ; Beijing, China)
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The magnetic-field-driven effect of microwave detection in a manganite granular system / N. V. Volkov [et al.] // J. Phys. D. - 2008. - Vol. 41, Is. 1. - Ст. 15004, DOI 10.1088/0022-3727/41/1/015004. - Cited References: 24 . - ISSN 0022-3727

РУБ Physics, Applied
Рубрики:
IDENTICAL METALS
   TUNNEL-JUNCTIONS
   MAGNETORESISTANCE
   RECTIFICATION
   SPINTRONICS
   TEMPERATURE
   PEROVSKITES
Кл.слова (ненормированные):
Bias currents -- Curie temperature -- Electric power generation -- Granular materials -- Magnetic field effects -- Microwave irradiation -- Voltage measurement -- Direct current voltage -- Magnetic tunnel junctions -- Metal insulator metal junctions -- Nonmagnetic metals -- Manganites
Аннотация: We demonstrate the microwave detection effect in a granular La0.7Ca0.3MnO3 sample. Dc voltage generated by the sample in response to microwave irradiation below the Curie temperature is found to be dependent on the applied magnetic field. The magnetic field dependence of the dc voltage has a broad peak resembling an absorption line. The detection effect depends substantially on the magnetic history of the sample; however, identical measurement conditions provide reproducibility of the experimental results. The detected dc voltage increases linearly with microwave power and strongly depends on a bias current through the sample. According to the results of systematic measurements, there exist two contributions to a value of the detected output signal. The first is magneto-independent; it can be explained in the framework of a mechanism used traditionally for description of the rectification effect in metal-insulator-metal junctions with nonmagnetic metals. The other is magneto-dependent; it originates from the interplay between the spin-dependent current through magnetic tunnel junctions and spin dynamics of the grains, which form these junctions in the sample.

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Держатели документа:
[Volkov, N. V.
Eremin, E. V.
Shaykhutdinov, K. A.
Tsikalov, V. S.
Petrov, M. I.
Balaev, D. A.
Semenov, S. V.] Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
[Volkov, N. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Krasnoyarsk 660041, Russian Federation

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Eremin, E. V.; Еремин, Евгений Владимирович; Shaykhutdinov, K. A.; Шайхутдинов, Кирилл Александрович; Tsikalov, V. S.; Petrov, M. I.; Петров, Михаил Иванович; Balaev, D. A.; Балаев, Дмитрий Александрович; Semenov, S. V.; Семенов, Сергей Васильевич
}
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Observation of nonmonotonic oscillatory interlayer exchange coupling in Co/Cu/CoO films with varying Cu spacer thickness / Y. Y. Song [et al.] // J. Appl. Phys. - 2008. - Vol. 103: 52nd Annual Conference on Magnetism and Magnetic Materials (NOV 05-09, 2007, Tampa, FL), Is. 7. - Ст. 07C112, DOI 10.1063/1.2831390. - Cited References: 20 . - ISSN 0021-8979

РУБ Physics, Applied
Рубрики:
GIANT MAGNETORESISTANCE
   MAGNETIC-ANISOTROPY
   LAYERS
   BIAS
   SUPERLATTICES
   MULTILAYERS
   TRILAYERS
Кл.слова (ненормированные):
Copper -- Film thickness -- Thermal effects -- CoCuCoO films -- Oscillatory interlayer exchange coupling. -- Metallic films
Аннотация: We report our experimental observation of interlayer exchange coupling phenomena in CoO/Cu/Co trilayers with systematic variation of Cu spacer layer thickness as well as temperature. It has been found that there exists a clear indication of nonmonotonically varying oscillatory interlayer exchange coupling. The amplitude of oscillation increases, reaches to the maximum, and decreases with increasing Cu spacer thickness from 1 to 16 atomic layers for all temperature ranges between 70 and 200 K. (c) 2008 American Institute of Physics.

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Держатели документа:
[Song, Young-Yeal
Kim, Dong-Hyun
Yu, Seong-Cho] Chungbuk Natl Univ, BK21 Phys Program, Cheongju 361763, South Korea
[Song, Young-Yeal
Kim, Dong-Hyun
Yu, Seong-Cho] Chungbuk Natl Univ, Dept Phys, Cheongju 361763, South Korea
[Kim, Petr D.
Turpanov, Igor Alexandrovic
Lee, Liudmila Alexeevna] SB RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Buzmakov, Afanasy Egorovic] Krasnoyarsk State Tech Univ, Krasnoyarsk 660074, Russia
[Lee, Kyu Won] Korea Res Inst Stand & Sci, Taejon 305340, South Korea
ИФ СО РАН
BK21 Physics Program, Department of Physics, Chungbuk National University, Cheongju 361-763, South Korea
Kirensky Institute of Physics SB RAS, Academgorodok, 50, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State Technical University, Kirenskogo, 26, Krasnoyarsk, 660074, Russian Federation
Korea Research Institute of Standard and Science, Taejon 305-340, South Korea

Доп.точки доступа:
Song, Y. Y.; Kim, D. H.; Yu, S. C.; Kim, P. D.; Ким, Пётр Дементьевич; Turpanov, I. A.; Турпанов, Игорь Александрович; Lee, L. A.; Ли, Людмила Алексеевна; Buzmakov, A. E.; Lee, K. W.
}
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Calculation of thermostable directions and the influence of bias electricfield on the propagation of the Lamb and SH waves in langasite single crystalplates / S. I. Burkov [et al.] // Proceedings - IEEE Ultrasonics Symposium. - 2010. - Ст. 5935458. - P. 1853-1856, DOI 10.1109/ULTSYM.2010.5935458 . - ISBN 1051. - ISBN 9781457703829
Кл.слова (ненормированные):
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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Доп.точки доступа:
Burkov, S. I.; Zolotova, O. P.; Turchin, P. P.; Sorokin, B. P.; Aleksandrov, K. S.; Александров, Кирилл Сергеевич; IEEE International ultrasonics symposium(2010 ; Oct. ; 11-14 ; San Diego, CA)
}
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Magnetic-field- and bias-sensitive conductivity of a hybrid Fe/SiO 2/p-Si structure in planar geometry / N. V. Volkov [et al.] // J. Appl. Phys. - 2011. - Vol. 109, Is. 12. - Ст. 123924. - P. , DOI 10.1063/1.3600056 . - ISSN 0021-8979
Кл.слова (ненормированные):
Channel switching -- Comparative analysis -- Fe films -- Fe layer -- Ferromagnetic films -- High temperature -- Hybrid structure -- Inversion layer -- Metal-insulator-semiconductors -- Negative magneto-resistance -- Planar geometries -- Positive magnetoresistance -- Schottky barriers -- Semiconductor substrate -- Temperature variation -- Weak localization -- Critical currents -- Electric resistance -- Ferromagnetic materials -- Geometry -- Magnetic fields -- Magnetoelectronics -- Magnetoresistance -- Metal insulator boundaries -- Metal insulator transition -- MIS devices -- Schottky barrier diodes -- Silicon -- Silicon compounds -- Switching circuits -- Transport properties -- Semiconducting silicon
Аннотация: Pronounced magnetic-field- and bias-sensitive features of the transport properties of a Fe/SiO2/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 metal-insulator-semiconductor (MIS) transition with a Schottky barrier near the interface between SiO2 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 a magnetic field. Positive magnetoresistance of the structures at high temperatures is determined, most likely, by disorder-induced weak localization. In the structure with the gap, negative magnetoresistance is observed at certain temperature and bias. Its occurrence should be attributed to an inversion layer formed in the semiconductor near the SiO2/p-Si interface when MIS transition is in the inversion regime. В© 2011 American Institute of Physics.

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Держатели документа:
Kirensky Institute of Physics, Russian Academy of Sciences, Siberian Branch, Krasnoyarsk, 660036, Russian Federation
Siberian State Aerospace University, Krasnoyarsk 660014, Russian Federation

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Tarasov, A. S.; Тарасов, Антон Сергеевич; Eremin, E. V.; Еремин, Евгений Владимирович; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Zharkov, S. M.; Жарков, Сергей Михайлович
}
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Peculiarities of magnetic properties of Ni-Ge layered films / A. V. Chernichenko [et al.] // TRENDS IN MAGNETISM. - 2011. - Vol. 168-169. - P261-264, DOI 10.4028/www.scientific.net/SSP.168-169.261 . - ISSN 1012-0394
Кл.слова (ненормированные):
exchange bias effect -- magnetic properties -- ni and ge mutual diffusion -- ni-ge layer structures -- surface morphology -- antiferromagnetism -- diffusion -- germanium -- magnetic properties -- magnetization -- morphology -- phase interfaces -- solids -- germanium -- magnetic properties -- magnetization -- nickel -- surface morphology -- temperature distribution -- antiferromagnetic phase -- exchange bias effects -- ge films -- layered films -- low temperatures -- magnetization temperature -- mutual diffusion -- ni and ge mutual diffusion -- ni-ge layer structures -- ge layers -- surface morphology -- magnetism
Аннотация: The surface morphology and magnetic properties of layered Ni-Ge films were investigated. The films surface has been shown to consist of the grains of 2 - 4 nm in height with the average radius of about 40-80 nm. Magnetization temperature dependences are different for FC and ZFC processes; in the latter case, the magnetization maximum is observed near the temperature T m?50K. The exchange bias effect is observed at low temperatures. The results are explained by the formation of the antiferromagnetic phase in the interface between Ni and Ge layers due to the Ge and Ni mutual diffusion.

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

Доп.точки доступа:
Chernichenko, A. V.; Черниченко, Ангелина Виталиевна; Edelman, I. S.; Эдельман, Ирина Самсоновна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Marushchenko, D. A.; Марущенко, Дмитрий Анатольевич; Turpanov, I. A.; Турпанов, Игорь Александрович; Patrin, G. S.; Патрин, Геннадий Семёнович; Greben'kova, Yu. E.; Гребенькова, Юлия Эрнестовна
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Magnetic-field- and bias-sensitive conductivity of a hybrid Fe/SiO 2/p-Si structure in planar geometry / N. V. Volkov [et al.] // Journal of Applied Physics. - 2011. - Т. 109, № 12. - P123924, DOI 10.1063/1.3600056 . - ISSN 0021-8979. - ISSN 1089-7550

РИНЦ
Держатели документа:
Kirensky Institute of Physics,Russian Academy of Sciences,Siberian Branch
Siberian State Aerospace University

Доп.точки доступа:
Volkov, N. V.; Волков, Никита Валентинович; Tarasov, A. S.; Тарасов, Антон Сергеевич; Eremin, E. V.; Еремин, Евгений Владимирович; Varnakov, S. N.; Варнаков, Сергей Николаевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Zharkov, S. M.; Жарков, Сергей Михайлович
}
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10.

Effect of the nonmagnetic layer in a Co/Cu/CoO trilayer structure on the exchange coupling in it / P. D. Kim [et al.] // J. Exp. Theor. Phys. - 2011. - Vol. 112, Is. 4. - P. 612-616, DOI 10.1134/S1063776111030058. - Cited References: 21 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
SPACER LAYER
BIAS
ANISOTROPY
Кл.слова (ненормированные):
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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Держатели документа:
[Kim, P. D.
Patrin, G. S.
Turpanov, I. A.
Khalyapin, D. L.
Marushchenko, D. A.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Yu, S. C.
Song, Yu. Y.] Chungbuk Natl Univ, Dept Phys, Cheongju 361763, South Korea
[Yu, S. C.
Song, Yu. Y.] Chungbuk Natl Univ, Phys Program BK21, Cheongju 361763, South Korea
[Patrin, G. S.
Khalyapin, D. L.
Marushchenko, D. A.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
BK21 Physics Program, Department of Physics, Chungbuk National University, Cheongju 361-763, South Korea
Siberian Federal University, Krasnoyarsk 660041, Russian Federation

Доп.точки доступа:
Kim, P. D.; Ким, Пётр Дементьевич; Yu, S. C.; Patrin, G. S.; Патрин, Геннадий Семёнович; Song, Y. Y.; Turpanov, I. A.; Турпанов, Игорь Александрович; Khalyapin, D. L.; Marushchenko, D. A.; Марущенко, Дмитрий Анатольевич
}
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