Библиотека института физики им. Л.В. Киренского СО РАН

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

в найденном

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>S=FILMS<.>)

Общее количество найденных документов : 56
Показаны документы с 1 по 20

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Deich L. I., Ignatchenko V. A.
Заглавие : Effect of spatial fluctuations of the magnetization modulus on the properties of amorphous ferromagnets
Место публикации : Zhurnal Eksperimentalnoi Teor. Fiz. - 1991. - Vol. 99, Is. 3. - P.816-830. - ISSN 0044-4510
Примечания : Cited References: 27
Предметные рубрики: TEMPERATURE-DEPENDENCE
SPIN-WAVES
FILMS
SATURATION
LAW
Аннотация: A model of amorphous ferromagnets with longwave spatial fluctuations of the magnetization modulus M is studied. It is shown that for a correct understanding of the properties of the model, it is principally necessary to take into account the magnetic dipole interaction. This interaction enhances the contribution of the fluctuations of M to the ground state, dispersion law and spin wave attenuation. The spectral and correlation properties of the inhomogeneous ground state and the law of approach of the magnetization to saturation in the model are studied. The dispersion law and spin wave attenuation are investigated. A novel mechanism of formation of a correction of the form T5/2 to the Bloch law in the low temperature dependence of the magnetization is proposed.
WOS
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Петров, Михаил Иванович, Krivomazov S. N., Khrustalev B. P., Aleksandrov K. S.
Заглавие : A study of the hysteresis property of the current voltage characteristic in high-temperature superconductors
Место публикации : Solid State Commun. - 1992. - Vol. 82, Is. 6. - P.453-456. - ISSN 0038-1098, DOI 10.1016/0038-1098(92)90748-X
Примечания : Cited References: 21
Предметные рубрики: HIGH-TC SUPERCONDUCTORS
YBA2CU3O7-X
FILMS
Аннотация: Temperature measurements of current-voltage characteristics (CVC) of the (Y, Lu)1Ba2Cu3O7-delta high-temperature superconductor have been performed. Analysis of the data shows that CVC of HTSC is mainly formed by two mechanisms: the creep of the Abrikosov vortices inside the crystallites and the Andreev reflection of the carriers within the metal character boundary between the crystallites.
WOS
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sadreev A. F., Sukhinin Y. V.
Заглавие : Phase transitions in a system of CH3(CH2)(n-1) self-assembled on the Au(111) crystal surface
Место публикации : Phys. Rev. B: AMERICAN PHYSICAL SOC, 1996. - Vol. 54, Is. 24. - P17966-17973. - ISSN 1098-0121, DOI 10.1103/PhysRevB.54.17966
Примечания : Cited References: 44
Предметные рубрики: ORGANIZED MOLECULAR ASSEMBLIES
ALKYL THIOL MONOLAYERS
STRUCTURAL CHARACTERIZATION
DYNAMICS SIMULATION
DEVILS STAIRCASE
GOLD SURFACES
FILMS
MODEL
CHAIN
DIFFRACTION
Аннотация: The n-alkanethiols CH3(CH2)(n-1) on the crystal surface of gold (111) are considered. Couplings between atoms (C, H) of the n-alkanethiols were modelled by the Morse potential, and couplings between the n-alkanethiols and the crystal surface were modelled by 12-3 potentials. Because of symmetry Z(2) of the n-alkanethiols in a tilted state, the system can be reduced to the Ising model on the triangular lattice, the phase diagram of which can be explicitly considered. Depending on the choice of the coupling parameters, the ordered state of the system may form an incommensurate or 2X1 superstructure. The temperatures of the phase transition, equilibrium tilting, twisting, and azimuthal angles are found to depend on the Morse coupling constants.
WOS
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sukhinin Y. V.
Заглавие : Phase transitions in self-assembled monolayers of alkanethiols containing the polar group
Место публикации : J. Exp. Theor. Phys.: AMER INST PHYSICS, 1998. - Vol. 87, Is. 1. - P115-122. - ISSN 1063-7761, DOI 10.1134/1.558645
Примечания : Cited References: 38
Предметные рубрики: ORGANIZED MOLECULAR ASSEMBLIES
ALKYL THIOL MONOLAYERS
STRUCTURAL CHARACTERIZATION
DYNAMICS SIMULATION
LANGMUIR MONOLAYER
SURFACES
GOLD
FILMS
AU(111)
MODEL
Аннотация: Equilibrium states of the system of self-assembled monolayers (SAMs) of n-alkanethiol molecules HS(CH2)(n-1)(X) with polar group X chemiabsorbed on the Au(111) crystal surface are considered. The couplings between the atoms (C, H) of the n-alkanethiols are approximated by the Lennard-Jones potential. The couplings between the n-alkanethiols and the crystal surface are approximated by the 12-3 potential. The interactions of polar groups and the self-images with the metal substrate are taken into consideration. The phase-transition temperatures, the structural order and equilibrium tilt, and the twist and azimuthal angles of the macromolecules, which depend on the dipole moments, are found. (C) 1998 American Institute of Physics.
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gavrichkov V. A., Ovchinnikov S. G.
Заглавие : Characteristic features of the extrinsic electric resistance in ferromagnets with low carrier density
Место публикации : Phys. Solid State: AMER INST PHYSICS, 1999. - Vol. 41, Is. 1. - P59-66. - ISSN 1063-7834, DOI 10.1134/1.1130731
Примечания : Cited References: 26
Предметные рубрики: QUANTUM TEMPERATURE OSCILLATIONS
MAGNETIC SEMICONDUCTORS
HGCR2SE4
RESISTIVITY
FILMS
Аннотация: Switching from simple semiconductors to more complicated chemical compositions, we encounter mainly nonstoichiometric or undoped compounds. Combined with other characteristic features of d(f) compounds, this can lead, together with the ordinary scattering by spin disorder in magnetic semiconductors, to an unusual impurity contribution to the total scattering of carriers even in intrinsic semiconductors. A unique scheme for calculating the energy structure of the conduction-band bottom of a ferromagnetic semiconductor and the temperature and field dependences of the impurity contribution to the resistivity is proposed on the basis of a model Hamiltonian. The computed magnetoresistance ratio is negative and has a maximum near T-c. A qualitative comparison is made between the results and the experimental temperature dependences of the Hall mobility and magnetoresistance ratio in the ternary semiconductor n-HgCr2Se4, which is nonstoichiometric with respect to the chalcogen. To identify previously unobserved temperature oscillations of the resistance, a careful analysis is made of the low-temperature part of the resistance using the relations obtained. (C) 1999 American Institute of Physics. [S1063-7834(99)01701-3].
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Petrov M. I., Balaev D. A., Gokhfeld D. M., Ospishchev S. V., Shaikhutdinov K. A., Aleksandrov K. S.
Заглавие : Applicability of the theory based on Andreev reflection to the description of experimental current-voltage characteristics of polycrystalline HTSC plus normal metal composites
Место публикации : Physica C. - 1999. - Vol. 314, Is. 1-2. - P.51-54. - ISSN 0921-4534, DOI 10.1016/S0921-4534(99)00151-3
Примечания : Cited References: 19
Предметные рубрики: WEAK LINKS
JUNCTIONS
FILMS
Ключевые слова (''Своб.индексиров.''): ybacuo + bapbo3 composites--network of weak s-n-s links--current-voltage characteristic
Аннотация: Measurements of current-voltage characteristics (CVC) of Y3/4Lu1/4Ba2,Cu3O7 + BaPbO3 and Y3/4Lu1/4Ba2Cu3O7 +BaPb0.9Sn0.1O3 composites modelling network of superconducting-normal metal-superconducting (S-N-S) junctions in effectively 'clean' and 'dirty' limits, respectively, have been performed. Essential difference of CVCs for these composites is observed in spite of the identical preparation technique and experimental conditions. It is shown that the theory for S-N-S junctions [R. Kummel, U. Gunsenheimer, R. Nicolsky, Phys. Rev. B, 42 (1990) 3932] well describes the experimental CVCs of the composites in both cases. (C) 1999 Published by Elsevier Science B.V. All rights reserved.
WOS,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Iskhakov R. S., Komogortsev S. V., Balaev A. D., Chekanova L. A.
Заглавие : Dimensionality of a system of exchange-coupled grains and magnetic properties of nanocrystalline and amorphous ferromagnets
Место публикации : JETP Letters. - 2000. - Vol. 72, Is. 6. - P.304-307. - ISSN 0021-3640, DOI 10.1134/1.1328443
Примечания : Cited References: 15
Предметные рубрики: RANDOM ANISOTROPY
FILMS
IRON
SIZE
Аннотация: Characteristics of random magnetic anisotropy in ferromagnetic films of amorphous Co90P10 and nanocrystalline Ni75C25 , Fe80B4C16 , and Co80C20 alloys and also in multilayer films [Co93P7(x)/Pd(14 Angstrom)](20) and [Co90P10(x)/Pd(14 Angstrom)](20) obtained by various technological procedures were studied experimentally. It was found that the spatial dimensionality (d) of the system of ferromagnetically coupled grains (2R(c)) in the materials under study determined the exponent in the power dependence of the approach of magnetization to saturation in the region of fields H 2A / MRc2. The dependence DeltaM similar to H-1/2 was observed for nanocrystalline and amorphous films with a three-dimensional grain arrangement. The approach to saturation in multilayer films with a two-dimensional grain arrangement in an individual magnetic layer follows the law DeltaM similar to H-1. The main micromagnetic characteristics of random anisotropy, such as the ferromagnetic correlation radius R-f and the average anisotropy [K] of a ferromagnetic domain with a size of 2R(f) , were determined for multilayer Co/Pd films. Correlation was found between the coercive field and these characteristics of random anisotropy. (C) 2000 MAIK "Nauka / Interperiodica".
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mushailov E. S., Kim P. D., Turpanov I. A., Bondarenko G. V., Bondarenko G. N., Mishina S. E.
Заглавие : Multilayer composite epitaxial CuCo single crystals
Место публикации : JETP Letters. - 2000. - Vol. 71, Is. 5. - P.195-197. - ISSN 0021-3640, DOI 10.1134/1.568313
Примечания : Cited References: 10
Предметные рубрики: SUPERLATTICES
DIFFRACTION
FILMS
Аннотация: The ion-plasma spraying method was used to synthesize new phases of metastable atomic-ordered layered CuCo single crystals and single crystals of CucCo1 - c solid solutions via epitaxial layer-by-layer crystallization, and some of their physical properties were studied. (C) 2000 MAIK "Nauka/Interperiodica".
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kim P. D., Khalyapin D. L., Turpanov I. A., Li L. A., Beten'kova A. Ya., Kan S. V.
Заглавие : Anomalous temperature dependence of the magnetoresistance in Co/Cu multilayers
Место публикации : Phys. Solid State: AMER INST PHYSICS, 2000. - Vol. 42, Is. 9. - P1688-1690. - ISSN 1063-7834, DOI 10.1134/1.1309452
Примечания : Cited References: 5
Предметные рубрики: FILMS
Аннотация: An anomalous temperature dependence of magnetoresistance (MR) of Co/Cu multilayer films with a similar to 3 Angstrom thick magnetic layer has been established experimentally. The temperature of the MR maximum T-max is shown to coincide with the Neel temperature. The variation of T-max with the Cu layer thickness follows an oscillatory pattern. (C) 2000 MAIK "Nauka/Interperiodica".
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Edelman I. S., Ivantsov R., Vasiliev A., Stepanov S., Kornilova E., Zarubina T.
Заглавие : Superparamagnetic and ferrimagnetic nanoparticles in glass matrix
Место публикации : Physica B. - 2001. - Vol. 301, Is. 3-4. - P.203-211. - ISSN 0921-4526, DOI 10.1016/S0921-4526(01)00274-5
Примечания : Cited References: 9
Предметные рубрики: MAGNETIC-PROPERTIES
PARTICLES
FILMS
Ключевые слова (''Своб.индексиров.''): magnetic nanoparticles--faraday rotation--faraday rotation--magnetic nanoparticles--crystal structure--faraday effect--ferrimagnetic materials--glass--particle size analysis--superparamagnetism--x ray diffraction analysis--amorphous glass matrices--faraday rotations--nanostructured materials
Аннотация: Faraday rotation (FR) spectral, field, and temperature dependencies in oxide glasses with small additions of paramagnetic elements are investigated. Formation of ferrite nanoparticles in amorphous glass matrices is revealed by X-ray diffraction. Particles have crystal structure similar to spinel structure, their dimensions are about 10-24 nm. The FR field dependencies are typical for ferrimagnetic or superparamagnetic substances depending on particle size. Strong FR increase at the samples cooling (more than twice for some samples) in the temperature interval 105-273 K is observed. (C) 2001 Elsevier Science B.V. All rights reserved.
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Iskhakov R. S., Prokof'ev D. E., Chekanova L. A., Zhigalov V. S.
Заглавие : The spin-wave resonance study of concentrational inhomogeneities in nanocrystalline Ni-Fe-P and Ni-Fe-C alloys
Место публикации : Tech. Phys. Lett.: AMER INST PHYSICS, 2001. - Vol. 27, Is. 4. - P344-347. - ISSN 1063-7850, DOI 10.1134/1.1370222
Примечания : Cited References: 16
Предметные рубрики: PULSED PLASMA VAPORIZATION
FILMS
PRESSURE
Аннотация: The films of nanocrystalline Fe-Ni alloys obtained by various methods in the permalloy composition range (similar to 20 at. % Fe) were studied by the method of spin-wave resonance (SWR) spectroscopy. The effective SW exchange stiffness eta (eff) exhibits a characteristic dependence on the spin wavelength, which is indicative of the magnetization fluctuations in these films with a correlation radius of 12-20 nm. This is indirect evidence of the microphase separation in these nanocrystalline alloys and provides an estimate of the characteristic spatial size of an inhomogeneity in the atomic ratio X-Fe/X-Ni . (C) 2001 MAIK "Nauka/Interperiodica".
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Iskhakov R. S., Komogortsev S. V., Chekanova L. A., Balaev A. D., Yuzova V. A., Semenova O. V.
Заглавие : The magnetic structure of ferromagnetic filaments of a CoNi(P) alloy in a porous silicon matrix
Место публикации : Tech. Phys. Lett.: AMER INST PHYSICS, 2003. - Vol. 29, Is. 4. - P263-266. - ISSN 1063-7850, DOI 10.1134/1.1573285
Примечания : Cited References: 12
Предметные рубрики: RANDOM ANISOTROPY
NI NANOWIRES
NANOCRYSTALLINE
FILMS
CO
FE
Аннотация: The magnetic and resonance properties of CoNi(P) alloys, synthesized by chemical deposition as films on single crystal silicon substrates and as filaments in linear pores of porous silicon substrates, were studied by magnetization and ferromagnetic resonance measurements. It is established that CoNi(P) alloys of the same composition but different morphologies occur in states characterized by different degrees of nonequilibrium, which is manifested by different modes of the magnetization approach to saturation. (C) 2003 MAIK "Nauka / Interperiodica".
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sadreev A. F., Sukhunin Y. V., Petoral R. M., Uvdal K.
Заглавие : Ground state and phase transitions in a system of arg-cysteamines self-assembled on a Au(111) crystal surface
Место публикации : J. Chem. Phys.: AMER INST PHYSICS, 2004. - Vol. 120, Is. 2. - P954-960. - ISSN 0021-9606, DOI 10.1063/1.1631920
Примечания : Cited References: 38
Предметные рубрики: MOLECULAR-DYNAMICS SIMULATION
HYDROGEN-BOND
MONOLAYERS
MODEL
GOLD
PEPTIDES
ALKANETHIOLS
ACTIVATION
FILMS
CYS
Ключевые слова (''Своб.индексиров.''): gold--ground state--hydrogen bonds--molecules--phase transitions--self assembly--surfaces--temperature--arg-cysteamines--crystal surface--dipole moments--dipole-dipole interactions--molecular dynamics
Аннотация: The translational and orientation order of arg-cysteamine molecules chemiabsorbed on the Au(111) crystal surface is considered. Couplings between carbon, nitrogen, and hydrogen atoms of the n-alkanethiols are approximated by the Lennard-Jones potential. Moreover, hydrogen bonds between oxygen and nitrogen and dipole-dipole interactions of the dipole moments of different atomic groups are taken into account. It is found that molecules are arranged in a 2x2 lattice and have the total symmetry C(6)xZ(2). The critical temperature of the phase transition to the tilted state T-c1, which breaks the symmetry C-6, is estimated to be extremely high. The spontaneous breakdown of the remaining symmetry Z(2) leads to the twisted state of the molecules and has the critical temperature T-c2=340 K. (C) 2004 American Institute of Physics.
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gorev M. V., Bondarev V. S., Flerov I. N., Sciau P., Savariault J. M.
Заглавие : Heat capacity study of double perovskite-like compounds BaTi1-xZrxO3
Разночтения заглавия :авие SCOPUS: Heat capacity study of double perovskite-like compounds BaTi 1 - XZrxO3
Место публикации : Phys. Solid State: AMER INST PHYSICS, 2005. - Vol. 47, Is. 12. - P2304-2308. - ISSN 1063-7834, DOI 10.1134/1.2142895
Примечания : Cited References: 19
Предметные рубрики: BATIO3
BA(TI1-XZRX)O-3
FERROELECTRICS
CERAMICS
STATE
FILMS
FIELD
Аннотация: The temperature dependence of the heat capacity of two compositions in the solid solution system BaTi1 - xZrxO3 (x = 0.25, 0.35) was measured using adiabatic calorimetry. In the T-x phase diagram, these compounds occupy positions near the crossover from conventional ferroelectric behavior to the relaxor state. Both compounds reveal diffuse heat capacity anomalies: two anomalies in the temperature ranges 250-350 and 150-200 K at x = 0.35 and one anomaly within the range similar to 150-320 K at x = 0.25. The results obtained are discussed together with structural and dielectric measurements. (c) 2005 Pleiades Publishing, Inc.
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Balaev D. A., Prus A. G., Shaikhutdinov K. A., Petrov M. I.
Заглавие : Angular dependence of the magnetoresistance in Y3/4Lu1/4Ba2Cu3O7-CuO composites at 77 K
Разночтения заглавия :авие SCOPUS: Angular dependence of the magnetoresistance in Y3/4Lu 1/4Ba2Cu3O7-CuO composites at 77 K
Место публикации : Tech. Phys. Lett.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2006. - Vol. 32, Is. 8. - P677-679. - ISSN 1063-7850, DOI 10.1134/S1063785006080128
Примечания : Cited References: 16
Предметные рубрики: CERAMIC SUPERCONDUCTORS
MAGNETIC-FIELD
MICROSTRUCTURE
BOUNDARIES
TRANSPORT
MOTION
FILMS
Аннотация: The angular dependence of the magnetoresistance of polycrystalline Y3/4Lu1/4Ba2Cu3O7-CuO composites has been studied. These composites represent a system of Josephson junctions and exhibit a large magnetoresistance at 77 K. In addition to the isotropic component, there is the angle-dependent component proportional to sin(2)theta, where theta is the angle between the directions of current and magnetic field. This behavior is unambiguous evidence for the process of flux flow in the Josephson medium realized in the composites.
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chernozatonskii L. A., Sorokin P. B., Belova E. E., Bruning J., Fedorov A. S.
Заглавие : Metal-semiconductor (semimetal) superlattices on a graphite sheet with vacancies
Место публикации : JETP Letters. - 2006. - Vol. 84, Is. 3. - P.115-118. - ISSN 0021-3640, DOI 10.1134/S0021364006150033
Примечания : Cited References: 25
Предметные рубрики: PSEUDOPOTENTIALS
FILMS
Аннотация: It has been found that periodically closely spaced vacancies on a graphite sheet cause a significant rearrangement of its electronic spectrum: metallic waveguides with a high density of states near the Fermi level are formed along the vacancy lines. In the direction perpendicular to these lines, the spectrum exhibits a semimetal or semiconductor character with a gap where a vacancy miniband is degenerated into impurity levels.
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shaykhutdinov K. A., Balaev D. A., Popkov S. I., Vasilyev A. D., Martyanov O. N., Petrov M. I.
Заглавие : Thermally activated dissipation in a novel foamed Bi-based oxide superconductor in magnetic fields
Место публикации : Supercond. Sci. Technol.: IOP PUBLISHING LTD, 2007. - Vol. 20, Is. 6. - P491-494. - ISSN 0953-2048, DOI 10.1088/0953-2048/20/6/001
Примечания : Cited References: 20
Предметные рубрики: FLUX
BI2SR2CACU2O8+DELTA
MECHANISM
PHASE
FILMS
Ключевые слова (''Своб.индексиров.''): bismuth compounds--josephson junction devices--magnetic field effects--transport properties--resistive transitions--thermally activated dissipation--oxide superconductors
Аннотация: The transport properties of a novel foamed superconductor Bi1.8Pb0.3Sr1.9Ca2Cu3Ox have been studied. As the analysis of resistive transitions in a magnetic field shows, the dissipation follows a thermally activated flux creep model with the temperature- independent pinning potential in S-N-S-type Josephson junctions.
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zyryanov V. Y., Krakhalev M. N., Prishchepa O. O., Shabanov A. V.
Заглавие : Orientational structure transformations caused by the electric-field-induced ionic modification of the interface in nematic droplets
Разночтения заглавия :авие SCOPUS: Orientational structure transformations caused by the electric-field- induced ionic modification of the interface in nematic droplets
Место публикации : JETP Letters. - 2007. - Vol. 86, Is. 6. - P.383-388. - ISSN 0021-3640, DOI 10.1134/S0021364007180087
Примечания : Cited References: 18
Предметные рубрики: LIQUID
TRANSITIONS
FILMS
Аннотация: The films of a polymer-dispersed nematic liquid crystal doped with an ionic surfactant were studied. The surface-anchoring modification effect caused by the local increase in the concentration of surface-active ions was observed at the polymer-liquid crystal interface under the action of an electric field. The modification of the boundary conditions leads to the transformation of the orientational structure of the nematic droplets and, as a result, to an appreciable change in their texture patterns and light-scattering efficiency at the interfaces. The monopolar director configurations (normal and curved) arising in the process of orientational structure transformations are considered and their typical textures are demonstrated. The possibility that the monopolar structure can be formed is theoretically substantiated by the computer simulation of the director field in a nematic droplet with the boundary conditions corresponding to the experiment.
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Balaev D. A., Prus A. G., Shaykhutdinov K. A., Gokhfeld D. M., Petrov M. I.
Заглавие : Study of dependence upon the magnetic field and transport current of the magnetoresistive effect in YBCO-based bulk composites
Место публикации : Supercond. Sci. Technol.: IOP PUBLISHING LTD, 2007. - Vol. 20, Is. 6. - P495-499. - ISSN 0953-2048, DOI 10.1088/0953-2048/20/6/002
Примечания : Cited References: 25
Предметные рубрики: CERAMIC SUPERCONDUCTORS
DISSIPATION
TRANSITION
SENSORS
MOTION
FILMS
Ключевые слова (''Своб.индексиров.''): current voltage characteristics--lorentz force--magnetic field effects--magnetic flux--magnetic sensors--magnetoresistance--intergrain boundaries--magnetic field sensor devices--magnetoresistance curves--magnetoresistive properties--yttrium barium copper oxides
Аннотация: The magnetoresistive properties of bulk YBCO + CuO and YBCO + BaPb0.75Sn0.25O3 composites for different orientations of external magnetic field H and macroscopic transport current j have been measured. These composites exhibit large magnetoresistance in weak magnetic fields ( 100 Oe), which makes them promising candidates for practical application in magnetic field sensor devices. The difference between.( T) dependences, magnetoresistance curves R( H) and current - voltage characteristics measured for H parallel to j and H || j is observed indicating the presence of the Lorentz- force- dependent dissipation in the composites. Angular dependences of magnetoresistance R(theta) ( where theta
WOS,
Scopus,
Читать в сети ИФ
Найти похожие

20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chernozatonskii L. A., Sorokin P. B., Belova E. E., Bruning J., Fedorov A. S.
Заглавие : Superlattices consisting of "lines" of adsorbed hydrogen atom pairs on graphene
Место публикации : JETP Letters. - 2007. - Vol. 85, Is. 1. - P.77-81. - ISSN 0021-3640, DOI 10.1134/S002136400701016X
Примечания : Cited References: 25
Предметные рубрики: CARBON NANOTUBES
ELECTRON-GAS
GRAPHITE
FILMS
PSEUDOPOTENTIALS
Аннотация: The structures and electron properties of new superlattices formed on graphene by adsorbed hydrogen molecules are theoretically described. It has been shown that superlattices of the (n, 0) zigzag type with linearly arranged pairs of H atoms have band structures similar to the spectra of (n, 0) carbon nanotubes. At the same time. superlattices of the (n, n) type with a "staircase" of adsorbed pairs of H atoms are substantially metallic with a high density of electronic states at the Fermi level and this property distinguishes their spectra from the spectra of the corresponding (n, n) nanotubes. The features of the spectra have the Van Hove form, which is characteristic of each individual superlattice. The possibility of using such planar structures with nanometer thickness is discussed.
WOS,
Scopus,
Читать в сети ИФ
Найти похожие