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=ANISOTROPY<.>)

Общее количество найденных документов : 41
Показаны документы с 1 по 20

Ignatchenko, V. A.
The effect of correlation-properties of inhomogeneities on plasma excitations in a metal / V. A. Ignatchenko, Yu. I. Mankov // J. Phys.: Condens. Matter. - 1991. - Vol. 3, Is. 31. - P. 5837-5845, DOI 10.1088/0953-8984/3/31/007. - Cited References: 21 . - ISSN 0953-8984

РУБ Physics, Condensed Matter
Рубрики:
SPIN-WAVES
ANISOTROPY
Аннотация: We theoretically investigate the manifestations of the non-monotonic character and anisotropic peculiarities of the correlation functions of the inhomogeneities in the dispersion law and damping of plasma waves. The following specific effects have been found: a change in the character of the modifications, dispersion law and damping for small wavenumbers; dependence of the plasma frequency shift on the direction of the wave propagation. We substantiate possibilities for developing the correlation spectroscopy of plasma waves which would enable us not only to measure a correlation radius of the inhomogeneities (this has been suggested earlier), but also to obtain information in the form of the correlation function.

WOS,
Scopus
Держатели документа:
Kirensky Inst. of Phys., Krasnoyarsk, Russian Federation

Доп.точки доступа:
Mankov, Yu. I.; Маньков, Юрий Иннокентьевич; Игнатченко, Вальтер Алексеевич
}
Найти похожие

Mankov, Y. I.
Effect of surface fixing of remagnetization on magnetoresistance of thin ferromagnetic layers / Y. I. Mankov // Fiz. Tverd. Tela. - 1994. - Vol. 36, Is. 12. - P. 3634-3637. - Cited References: 8 . - ISSN 0367-3294

РУБ Physics, Condensed Matter
Рубрики:
ANISOTROPY

WOS
}
Найти похожие

Plasma-spraying Co-Ni-Fe-B-Si amorphous alloys. Structure and magnetic properties / A. A. Lepeshev [и др.] // Pisma Zhurnal Tek. Fiz. - 1995. - Vol. 21, Is. 16. - P. 22-26. - Cited References: 8 . - ISSN 0320-0116

РУБ Physics, Applied
Рубрики:
ANISOTROPY

WOS

Доп.точки доступа:
Lepeshev, A. A.; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Denisova, E. A.; Денисова, Елена Александровна; Saunin, V. N.
}
Найти похожие

Man'kov, Y. I.
Effect of conduction electrons on the law of approach to saturation of a metallic ferromagnet with surface pinning of the magnetic moment / Y. I. Man'kov // Phys. Solid State. - 1999. - Vol. 41, Is. 4. - P. 582-588, DOI 10.1134/1.1130829. - Cited References: 37 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
ANISOTROPY
Аннотация: The effect of conduction electrons on the magnetization curve of a metallic ferromagnet with surface pinning of the magnetic moment is investigated theoretically. The electronic contribution is due to the rearrangement of the discrete spectrum of charge carriers trapped by the nonuniform magnetic induction of such a ferromagnet, and it is a kind of diamagnetic effect that appreciably decreases the volume-averaged magnetization of the ferromagnet. A power-law dependence H-3/4 on the external magnetic field H is obtained according to the law of magnetization approach to saturation. This dependence is due to the contribution of the conduction electrons. (C) 1999 American Institute of Physics. [S1063-7834(99)01804-3].

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
}
Найти похожие

Thermomagnetic data writing and erasing in DyCo/NiFe (TbFe/NiFe) film structures / V. A. Seredkin [et al.] // Tech. Phys. Lett. - 2004. - Vol. 30, Is. 10. - P. 820-822, DOI 10.1134/1.1813720. - Cited References: 10 . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
SPIN-WAVE RESONANCE
ANISOTROPY
LAYERS
Аннотация: A new principle of data writing and erasing is proposed based on the exchange coupling between magnetic layers with mutually orthogonal orientations of the effective magnetization. The new method provides for a significant decrease in energy consumption. The possibility of using bilayer magnetic films of the (rare earth metal-transition metal)/NiFe type possessing unidirectional anisotropy as the media for thermomagnetic writing and erasing of magnetooptical data is studied. (C) 2004 MAIK "Nauka / Interperiodica".

WOS,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, Siberian Div, LV Kirensky Phys Inst, Krasnoyarsk, Russia
Krasnoyarsk State Univ, Krasnoyarsk, Russia
ИФ СО РАН

Доп.точки доступа:
Seredkin, V. A.; Середкин, Виталий Александрович; Stolyar, S. V.; Столяр, Сергей Викторович; Frolov, G. I.; Фролов, Георгий Иванович; Yakovchuk, V. Y.
}
Найти похожие

Effects of exchange interaction in bilayer DyxCo1-x/NiFe films in the vicinity of compensation compositions of amorphous DyCo alloys / R. S. Iskhakov [et al.] // JETP Letters. - 2004. - Vol. 80, Is. 10. - P. 638-641, DOI 10.1134/1.1857270. - Cited References: 12 . - ISSN 0021-3640

РУБ Physics, Multidisciplinary
Рубрики:
SPIN-WAVE RESONANCE
ANISOTROPY
Аннотация: The displacement field of the hysteresis loop due to exchange anisotropy in planar DyCo/NiFe systems is studied experimentally as a function of the concentration of the rare-earth element. The bilayer DyCo/NiFe film system is characterized by an orthogonal arrangement of the effective magnetizations of separate layers under the condition that the amorphous DyCo layer is prepared in the region of magnetic compensation. An analysis of the dependence of the displacement field on the Dy concentration has led to an understanding of the physical mechanism of the formation of the exchange anisotropy in these planar systems. (C) 2004 MAIK "Nauka/Interperiodica".

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, Siberian Div, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Krasnoyarsk State Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Kirenskii Inst. of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Iskhakov, R. S.; Исхаков, Рауф Садыкович; Seredkin, V. A.; Середкин, Виталий Александрович; Stolyar, S. V.; Столяр, Сергей Викторович; Frolov, G. I.; Фролов, Георгий Иванович; Yakovchuk, V. Y.
}
Найти похожие

Magnetic field effect and dielectric anomalies at the spin reorientation phase transition of GdFe3(BO3)(4) / F. . Yen [et al.] // Phys. Rev. B. - 2006. - Vol. 73, Is. 5. - Ст. 54435, DOI 10.1103/PhysRevB.73.054435. - Cited References: 21 . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
IRON BORATE GDFE3(BO3)(4)
   HOMNO3
   ANISOTROPY
   PR
   SM
Аннотация: GdFe3(BO3)(4) exhibits a structural phase transition at 156 K, antiferromagnetic order of the Fe3+ moments at 36 K, followed by a spin reorientation phase transition at 9 K. The reorientation phase transition is studied through dielectric, magnetic, and heat capacity measurements under the application of external magnetic fields of up to 7 kOe. The dielectric constant indicates the existence of two distinct anomalies at T-SR=9 K that separate in temperature under external magnetic fields. The spin rotation phase transition is proven to be of the first-order nature through the magnetic analog of the Clausius-Clapeyron equation. Magnetodielectric effect of up to 1% is observed at 8 K and 7 kOe. The uniaxial magnetocaloric effect along the c axis is observed below the spin reorientation phase transition of 9 K.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
Univ Houston, Texas Ctr Superconduct, Houston, TX 77204 USA
Univ Houston, Dept Phys, Houston, TX 77204 USA
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
Hong Kong Univ Sci & Technol, Hong Kong, Hong Kong, Peoples R China
Russian Acad Sci, Siberian Div, Inst Phys, Krasnoyarsk 660036, Russia
Moscow MV Lomonosov State Univ, Fac Phys, Moscow 119992, Russia
ИФ СО РАН
Texas Center for Superconductivity of the University of Houston, Department of Physics, University of Houston, Houston, TX 77204-5002, United States
Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, United States
Hong Kong University of Science and Technology, Hong Kong, Hong Kong
Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Faculty of Physics, Moscow State University, Moscow, 119992, Russian Federation

Доп.точки доступа:
Yen, F.; Lorenz, B.; Sun, Y. Y.; Chu, C. W.; Bezmaternykh, L. N.; Безматерных, Леонард Николаевич; Vasiliev, A. N.
}
Найти похожие

Cobalt ferrite nanoparticles in a mesoporous silicon dioxide matrix / S. V. Komogortsev [et al.] // Tech. Phys. Lett. - 2009. - Vol. 35, Is. 10. - P. 882-884, DOI 10.1134/S1063785009100022. - Cited References: 10. - This study was supported in part by the Federal Program "Development of the Scientific Potential of Higher Education" (project no. RNP. 2.1.1/2584) and jointly by the Krasnoyarsk Regional Science Foundation and the Russian Foundation for Basic Research (project nos. r-Enisei-a 03-07-96803 and 09-02-98002-r_sibir'_a). . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
MAGNETIC-PROPERTIES
   NANOSIZED COFE2O4
   ANISOTROPY
   POWDERS
   CURVES
Аннотация: We have studied magnetic nanoparticles of cobalt ferrite obtained by the extraction-pyrolysis method in a mesoporous silicon dioxide (MSM-41) molecular sieve matrix. The X-ray diffraction data show evidence for the formation of CoFe(2)O(4) particles with a coherent scattering domain size of similar to 40 nm. Measurements of the magnetization curves showed that powders consisting of these nanoparticles are magnetically hard materials with a coercive field of H (c)(4.2 K) = 9.0 kOe and H (c)(300 K) = 1.8 kOe and a reduced remanent magnetization of M (r)/M (s)(4.2 K) = 0.83 and M (r)/M (s)(300 K) = 0.49. The shape of the low-temperature (4.2 K) magnetization curves is adequately described in terms of the Stoner-Wohlfarth model for randomly oriented single-domain particles with a cubic magnetic anisotropy.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
[Komogortsev, S. V.] Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia
Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia
Siberian State Technol Univ, Krasnoyarsk 660049, Russia
ИФ СО РАН
ИХХТ СО РАН
Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk 660041, Russian Federation
Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Siberian State Technological University, Krasnoyarsk 660049, Russian Federation

Доп.точки доступа:
Komogortsev, S. V.; Комогорцев, Сергей Викторович; Patrusheva, T. N.; Патрушева, Тамара Николаевна; Balaev, D. A.; Балаев, Дмитрий Александрович; Denisova, E. A.; Денисова, Елена Александровна; Ponomarenko, I. V.; Development of the Scientific Potential of Higher Education [RNP. 2.1.1/2584]; Krasnoyarsk Regional Science Foundation; Russian Foundation for Basic Research [r-Enisei-a 03-07-96803, 09-02-98002-r_sibir'_a]
}
Найти похожие

Effect of alloy formation processes in the Co-Cu system on the magnetic and magnetoresistance properties of multilayer Co/Cu films with ultrathin Co layers prepared by DC magnetron sputtering / D. L. Khalyapin [et al.] // Phys. Solid State. - 2010. - Vol. 52, Is. 9. - P. 1787-1796, DOI 10.1134/S1063783410090015. - Cited References: 29 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
GIANT MAGNETORESISTANCE
   SIZE DISTRIBUTION
   SPIN VALVES
   EXCHANGE
   TEMPERATURE
   HYSTERESIS
   ANISOTROPY
   CU(001)
   ISLANDS
Аннотация: This paper reports on a study of multilayer Co/Cu films with an effective thickness of the Co layer of similar to 3.5 , which were prepared by magnetron sputtering. The samples prepared have been found to have a metastable multiphase structure. An analysis of the data obtained by structural and, primarily, by magnetic methods has revealed that the main phases are the Co/Cu supersaturated solid solution (alloy) with a Co concentration of about 30 at %, the superparamagnetic phase, and the paramagnetic phase, which is accounted for by the presence of small (a few atoms at most) Co clusters embedded in the Cu matrix. A clearly pronounced maximum in the temperature dependences of the low-field magnetoresistance has been found, which is associated with the temperature of the magnetic phase transition of the supersaturated Co-Cu alloy.

WOS,
Scopus,
Читать в сети ИФ

Держатели документа:
[Khalyapin, D. L.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Khalyapin, D. L.
Kim, P. D.
Turpanov, I. A.
Beten'kova, A. Ya.
Bondarenko, G. V.
Isaeva, T. N.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
[Kim, J.] Hanyang Univ, Dept Met & Mat Sci, Ansan 426791, South Korea
[Kim, I.] Samsung Elect Mech Co LTD, Cent R&D Inst, EMD Lab, Suwon 443743, Gyunggi Do, South Korea
ИФ СО РАН
Siberian Federal University, pr. Svobodny 79, Krasnoyarsk 660041, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation
Department of Metallurgical and Material Science, Hanyang University, Sa-3-dong 1271, Ansan 426-791, South Korea
EMD Laboratory, Central R and D Institute, Samsung Electro-Mechanics Co., LTD, 314 Maetan3-Dong, Yeongtong-Gu, Suwon, Gyunggi-Do 443-743, South Korea

Доп.точки доступа:
Khalyapin, D. L.; Kim, P. D.; Ким, Пётр Дементьевич; Kim, J.; Turpanov, I. A.; Турпанов, Игорь Александрович; Beten'kova, A. Ya.; Бетенькова, Анна Яковлевна; Bondarenko, G. V.; Бондаренко, Геннадий Васильевич; Isaeva, T. N.; Kim, I.
}
Найти похожие

10.

Belyaev, B. A.
Micromagnetic calculation of the equilibrium distribution of magnetic moments in thin films / B. A. Belyaev, A. V. Izotov, A. A. Leksikov // Phys. Solid State. - 2010. - Vol. 52, Is. 8. - P. 1664-1672, DOI 10.1134/S1063783410080160. - Cited References: 17. - This study was supported by the Council on Grants from the President of the Russian Federation (grant no. 3818.2008.3), the Siberian Branch of the Russian Academy of Sciences (integration project no. 5), the Presidium of the Russian Academy of Sciences (project no. 27.1), and the Ministry of Education and Science of the Russian federation (state contract nos. 02.740.11.0220 and 02.740.11.0568. . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
SIMULATIONS
   ANISOTROPY
   NANOPARTICLES
   MODES
Аннотация: A new approach has been proposed for determining an equilibrium configuration of magnetic moments in condensed matter in terms of its discrete model. The solution to this problem is reduced to a system of linear inhomogeneous equations with undetermined Lagrange multipliers. The possibility of numerically solving these systems has been shown using a modified power method. The efficiency of the method has been demonstrated for the model of a thin magnetic film with a nonuniform distribution of the uniaxial magnetic anisotropy over the area. The dependence of the coercive force on the uniaxial anisotropy of nanocrystallites, their exchange interaction, and other parameters of samples has been investigated.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
[Belyaev, B. A.
Leksikov, An. A.] Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia
[Izotov, A. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, pr. Svobodnyi 79, Krasnoyarsk 660041, Russian Federation

Доп.точки доступа:
Izotov, A. V.; Изотов, Андрей Викторович; Leksikov, An. A.; Лексиков, Андрей Александрович; Беляев, Борис Афанасьевич
}
Найти похожие

11.

Frolov, G. I.
Studying the mechanism of exchange coupling in ferro/ferrimagnet NiFe/DyCo film structures / G. I. Frolov, V. A. Seredkin, V. Y. Yakovchuk // Tech. Phys. Lett. - 2010. - Vol. 36, Is. 1. - P. 57-59, DOI 10.1134/S1063785010010189. - Cited References: 7. - This study was supported in part by the Program for Development of the Scientific Potential of Russian Universities (project no. RNP.2.1.1/4399). . - ISSN 1063-7850

РУБ Physics, Applied
Рубрики:
ANISOTROPY
Аннотация: Dependence of the magnetic and magnetooptical properties of an exchange-coupled NiFe/DyCo bilayer system on the thickness (t (DyCo)) of a magnetically hard layer has been studied. It is established that the unidirectional anisotropy vanishes at t (DyCo) similar to 400 , while the coercive field in the magnetically soft layer becomes comparable to the exchange-induced field shift. In this case, the DyCo layer magnetization is almost parallel to the film plane, whereas a reference DyCo film exhibits a perpendicular anisotropy. A model of the magnetic state of layers in the ferro/ferrimagnetic layer structure under consideration is proposed, which assumes that a 180A degrees domain wall is formed at the interface upon magnetization reversal in the magnetically soft layer.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
[Frolov, G. I.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk, Russia
Siberian State Aerosp Univ, Krasnoyarsk, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Seredkin, V. A.; Середкин, Виталий Александрович; Yakovchuk, V. Y.; Фролов, Георгий Иванович
}
Найти похожие

12.

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.

WOS,
Scopus,
Читать в сети ИФ
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
}
Найти похожие

13.

Val'kov, V. V.
Effects of inelastic spin-dependent electron transport through a spin nanostructure in a magnetic field / V. V. Val'kov, S. V. Aksenov // J. Exp. Theor. Phys. - 2011. - Vol. 113, Is. 2. - P. 266-275, DOI 10.1134/S1063776111060070. - Cited References: 30. - This study was carried out under the program of the Physical Science Department of the Russian Academy of Sciences, Federal Target Program "Scientific and Scientific-Pedagogical Personnel of Innovative Russia in 2009-2013," Interdisciplinary Integration project no. 53 of the Siberian Branch of the Russian Academy of Sciences, and under partial support from the Russian Foundation for Basic Research (project no. 09-02-00127). The research work of one of the authors (S.V.A) was supported by grant no. MK-1300.2011.2 from the President of the Russian Federation. . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
CONDUCTION
ANISOTROPY
JUNCTIONS
Кл.слова (ненормированные):
Antiferromagnetic coupling -- Colossal magnetoresistance effect -- IV characteristics -- Metallic contacts -- Potential profiles -- Spectral characteristics -- Spin dependent transport -- Spin dimer -- Spin moments -- Spin-dependent electron transport -- Spin-flip process -- Tight-binding approximations -- Transmission coefficients -- Antiferromagnetism -- Colossal magnetoresistance -- Current voltage characteristics -- Electric resistance -- Nanostructures -- Transport properties -- Magnetic field effects
Аннотация: The transport properties and current-voltage (I-V) characteristics of a system of spin dimers with antiferromagnetic coupling arranged between metallic contacts are investigated in the tight binding approximation using the Landauer-Buttiker formalism. It is shown that the s-d(f) exchange interaction between the spin moments of the electrons being transported and the spins of the nanostructure leads to the formation of a potential profile as well as its variation due to spin-flip processes. As a result, the spin-dependent transport becomes inelastic, and the transmission coefficient and the I-V characteristic are strongly modified. It is found that the application of a magnetic field induces additional transparency peaks in the spectral characteristic of the system and causes the colossal magnetoresistance effect.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
[Val'kov, V. V.
Aksenov, S. V.] Russian Acad Sci, Siberian Branch, Inst Phys, Krasnoyarsk 660036, Russia
[Val'kov, V. V.
Aksenov, S. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Val'kov, V. V.] Reshetnikov Siberian State Aerosp Univ, Krasnoyarsk 660041, Russia
ИФ СО РАН
Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, Krasnoyarsk 660041, Russian Federation
Reshetnikov Siberian State Aerospace University, Krasnoyarsk 660014, Russian Federation

Доп.точки доступа:
Aksenov, S. V.; Аксенов, Сергей Владимирович; Вальков, Валерий Владимирович
}
Найти похожие

14.

    Effects of inelastic spin-dependent electron transport through a spin nanostructure in a magnetic field / V. V. Val'Kov, S. V. Aksenov // J. Exp. Theor. Phys. - 2011. - Vol. 113, Is. 2. - P266-275, DOI 10.1134/S1063776111060070. - Cited Reference Count: 30. - Гранты: This study was carried out under the program of the Physical Science Department of the Russian Academy of Sciences, Federal Target Program "Scientific and Scientific-Pedagogical Personnel of Innovative Russia in 2009-2013," Interdisciplinary Integration project no. 53 of the Siberian Branch of the Russian Academy of Sciences, and under partial support from the Russian Foundation for Basic Research (project no. 09-02-00127). The research work of one of the authors (S.V.A) was supported by grant no. MK-1300.2011.2 from the President of the Russian Federation. - Финансирующая организация: Russian Foundation for Basic Research [09-02-00127]; Russian Federation [MK-1300.2011.2] . - AUG. - ISSN 1063-7761
Рубрики:
CONDUCTION
   ANISOTROPY
   JUNCTIONS
Кл.слова (ненормированные):
antiferromagnetic coupling -- colossal magnetoresistance effect -- iv characteristics -- metallic contacts -- potential profiles -- spectral characteristics -- spin dependent transport -- spin dimer -- spin moments -- spin-dependent electron transport -- spin-flip process -- tight-binding approximations -- transmission coefficients -- antiferromagnetism -- colossal magnetoresistance -- current voltage characteristics -- electric resistance -- nanostructures -- transport properties -- magnetic field effects
Аннотация: The transport properties and current-voltage (I-V) characteristics of a system of spin dimers with antiferromagnetic coupling arranged between metallic contacts are investigated in the tight binding approximation using the Landauer-Buttiker formalism. It is shown that the s-d(f) exchange interaction between the spin moments of the electrons being transported and the spins of the nanostructure leads to the formation of a potential profile as well as its variation due to spin-flip processes. As a result, the spin-dependent transport becomes inelastic, and the transmission coefficient and the I-V characteristic are strongly modified. It is found that the application of a magnetic field induces additional transparency peaks in the spectral characteristic of the system and causes the colossal magnetoresistance effect.

WOS,
Scopus,
eLibrary
Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Reshetnikov Siberian State Aerosp Univ, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Val'kov, V. V.; Вальков, Валерий Владимирович; Aksenov, S.V.
}
Найти похожие

15.

    FMR and TEM Studies of Co and Ni Nanoparticles Implanted in the SiO2 Matrix / I. S. Edelman [et al.] // Appl. Magn. Reson. - 2011. - Vol. 40, Is. 3. - P363-375, DOI 10.1007/s00723-011-0218-4. - Cited Reference Count: 51. - Гранты: The work was supported in part by the Russian Foundation for Basic Research, grant no. 11-02-00972-a, Ministry of Education and Science of the Russian Federation, Federal Target Program "Scientific and scientific-pedagogical personnel of innovative Russia'', contract no. 02.740.11.0797, and State Program "Development of the Scientific Potential of the Higher Education School'', project no. 2.1.1/6038. S.M. Zharkov acknowledges the financial support of the Russian government contract no. 02.740.11.0568. The electron microscopy investigations were carried out at the Joint Center of the Siberian Federal University. - Финансирующая организация: Russian Foundation for Basic Research [11-02-00972-a]; Ministry of Education and Science of the Russian Federation [02.740.11.0797]; State Program "Development of the Scientific Potential of the Higher Education School'' [2.1.1/6038]; Russian government [02.740.11.0568] . - MAY. - ISSN 0937-9347. - ISSN 1613-7507
Рубрики:
FERROMAGNETIC-RESONANCE
   MAGNETIC-PROPERTIES
   THIN-FILMS
   COBALT NANOPARTICLES
   ION-IMPLANTATION
   FINE PARTICLES
   GRANULAR FILMS
   ANISOTROPY
   POLYIMIDES
   RUTILE
Кл.слова (ненормированные):
energy dispersive x ray spectroscopy -- face-centered cubic structure -- fused silica plates -- g factors -- hexagonal close packing -- high dose -- high-dose implantation -- implantation dose -- implanted samples -- line shape -- magnetic parameters -- matrix -- metal nanoparticles -- ni nanoparticles -- nonsymmetric -- out-of-plane -- room temperature -- spherical shape -- subsurface layer -- tem -- temperature dependence -- thin magnetic films -- uniaxial magnetic anisotropy -- cobalt -- fused silica -- magnetic anisotropy -- nanoparticles -- silica -- silicon compounds -- transmission electron microscopy -- x ray spectroscopy -- ferromagnetic resonance
Аннотация: Fused silica plates have been implanted with 40 keV Co+ or Ni+ ions to high doses in the range of (0.25-1.0) x 10(17) ions/cm(2), and magnetic properties of the implanted samples have been studied with ferromagnetic resonance (FMR) technique supplemented by transmission electron microscopy, electron diffraction and energy dispersive X-ray spectroscopy. The high-dose implantation with 3d-ions results in the formation of cobalt and nickel metal nanoparticles in the irradiated subsurface layer of the SiO2 matrix. Co and Ni nanocrystals with hexagonal close packing and face-centered cubic structures have a spherical shape and the sizes of 4-5 nm (for cobalt) and 6-14 nm (for nickel) in diameter. Room-temperature FMR signals from ensembles of Co and Ni nanoparticles implanted in the SiO2 matrix exhibit an out-of-plane uniaxial magnetic anisotropy that is typical for thin magnetic films. The dose and temperature dependences of FMR spectra have been analyzed using the Kittel formalism, and the effective magnetization and g-factor values have been obtained for Co- and Ni-implanted samples. Nonsymmetric FMR line shapes have been fitted by a sum of two symmetrical curves. The dependences of the magnetic parameters of each curve on the implantation dose and temperature are presented.

WOS,
Scopus,
eLibrary
Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Zavoisky Physical-Technical Institute,Russian Academy of Sciences

Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Petrakovskaja, E. A.; Петраковская, Элеонора Анатольевна; Petrov, D. A.; Петров, Дмитрий Анатольевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Khaibullin, R. I.; Nuzhdin, V. I.; Stepanov, A. L.
}
Найти похожие

16.

Magnetic-field-induced structural transition in polymer-dispersed liquid crystals / A. M. Parshin [et al.] // Mol. Cryst. Liquid Cryst. - 2012. - Vol. 557, Is. 1. - P. 50-59, DOI 10.1080/15421406.2011.632237. - Cited References: 19. - This study was supported by the Presidium of the Russian Academy of Sciences (Project no. 24.1) and the Siberian Branch of the Russian Academy of Sciences (grant no. 43). . - ISSN 1542-1406

РУБ Crystallography
Рубрики:
FRANK CONSTANTS
   ELECTRIC-FIELD
   NEMATIC DROPS
   ANISOTROPY
   ALIGNMENT
   FILMS
   ORDER
Кл.слова (ненормированные):
Anchoring energy -- magnetic field -- polymer-dispersed liquid crystals -- structural transition -- temperature fluctuations
Аннотация: The structural transition occurring in droplets of nematic liquid crystals formed in a polymer in magnetic field is studied. The transition is caused by field-driven weakening of tangential surface anchoring and develops following two scenarios: bipolar structure/homogeneous structure or bipolar structure/radial structure. The first scenario suggests a cyclic transition occurring upon thermal fluctuations without field. The structural transition is considered within a model of the biaxial liquid crystal/polymer interface. The model describes tendency of the nematic director to align tangentially on a droplet's surface, normally under the action of flexoelectric polarization, and axially along the magnetic-field-imposed easy orientation axis.

Смотреть статью,
Scopus,
WoS,
Читать в сети ИФ
Держатели документа:
[Parshin, A. M.
Nazarov, V. G.
Zyryanov, V. Ya.
Shabanov, V. F.] Krasnoyarsk Sci Ctr, LV Kirensky Inst Phys, Krasnoyarsk, Russia

Доп.точки доступа:
Parshin, A. M.; Паршин, Александр Михайлович; Nazarov, V. G.; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович
}
Найти похожие

17.

Nanoparticle-containing glasses co-doped with transition and rare earth elements: comparative studies of transparent magnets / I. S. Edelman [et al.] // Phys. Chem. Glasses - Eur. J. Glass Sci. Technol. Part B. - 2012. - Vol. 53, Is. 2. - P. 37-44. - Cited References: 22 . - ISSN 1753-3562

РУБ Chemistry, Physical + Materials Science, Ceramics
Рубрики:
ANISOTROPY
RESONANCE
FERRITE
Аннотация: A comparative multitechnique study (including transmission electron microscopy, synchrotron radiation, static magnetisation, magnetic circular dichroism and electron magnetic resonance) has been carried out of nanoparticle-containing borate glasses of two different types: (i) with iron and manganese oxide additives and (ii) with iron and rare earth oxide additives. Due to the presence of magnetic nanoparticles, these glasses have a nonlinear magnetic field dependence of magnetization with hysteresis and saturation while remaining transparent in the visible and near-infrared spectral ranges. The nature of the nanoparticles has been identified as manganese ferrite for type (i) glasses and maghemite for type (ii) glasses. The synchrotron radiation studies as well as the computer-assisted electron magnetic resonance provide an insight into the morphological characteristics of the magnetic nanoparticles in the glass.

Смотреть статью,
Scopus,
WoS

Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Ivanova, O.; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Petrakovskaja, E. A.; Петраковская, Элеонора Анатольевна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Zabluda, V. N.; Заблуда, Владимир Николаевич; Hennet, L.; Thiaudiere, D.; Saboungi, M. L.; Zubavichus, Y.; Stepanov, S.; Zaikovskii, V. I.; Artemenko, A.; Kliava, J.; International Conference on the Chemistry of Glasses and Glass-Forming Melts (2011 ; Sept. ; Oxford, England)
}
Найти похожие

18.

Magnetic nanoparticles formed in glasses co-doped with iron and larger radius elements / I. S. Edelman [et al.] // J. Appl. Phys. - 2012. - Vol. 112, Is. 8. - Ст. 84331. - P. , DOI 10.1063/1.4759244. - Cited References: 65. - This work was partly supported by the Russian Foundation for Basic Research, Grant Nos. 07-02-92174 RFBR-CNRS and 11-02-00972, and President of Russia Federation Grant No NSh 1044.2012.2. A. Artemenko acknowledges financial support from the Marie Curie International Incoming Fellowship within the 7th European Community Framework Programme (EPREXINA, GA 255662). The synchrotron measurements were supported via the Russian federal Contract No. 16.552.11.7003. The authors thank K. P. Polyakova for the preparation of thin films. . - ISSN 0021-8979

РУБ Physics, Applied
Рубрики:
SUPERPARAMAGNETIC RESONANCE
   FERROMAGNETIC-RESONANCE
   TEMPERATURE-DEPENDENCE
   FERRITE NANOPARTICLES
   OXIDE NANOPARTICLES
   FARADAY-ROTATION
   CERAMICS
   ANISOTROPY
   PARTICLES
   SPECTRA
Аннотация: A new type of nanoparticle-containing glasses based on borate glasses co-doped with low contents of iron and larger radius elements, Dy, Tb, Gd, Ho, Er, Y, and Bi, is studied. Heat treatment of these glasses results in formation of magnetic nanoparticles, radically changing their physical properties. Transmission electron microscopy and synchrotron radiation-based techniques: x-ray diffraction, extended x-ray absorption fine structure, x-ray absorption near-edge structure, and small-angle x-ray scattering, show a broad distribution of nanoparticle sizes with characteristics depending on the treatment regime; a crystalline structure of these nanoparticles is detected in heat treated samples. Magnetic circular dichroism (MCD) studies of samples subjected to heat treatment as well as of maghemite, magnetite, and iron garnet allow to unambiguously assign the nanoparticle structure to maghemite, independently of co-dopant nature and of heat treatment regime used. Different features observed in the MCD spectra are related to different electron transitions in Fe3+ ions gathered in the nanoparticles. The static magnetization in heat treated samples has non-linear dependence on the magnetizing field with hysteresis. Zero-field cooled magnetization curves show that at higher temperatures the nanoparticles occur in superparamagnetic state with blocking temperatures above 100 K. Below ca. 20 K, a considerable contribution to both zero field-cooled and field-cooled magnetizations occurs from diluted paramagnetic ions. Variable-temperature electron magnetic resonance (EMR) studies unambiguously show that in as-prepared glasses paramagnetic ions are in diluted state and confirm the formation of magnetic nanoparticles already at earlier stages of heat treatment. Computer simulations of the EMR spectra corroborate the broad distribution of nanoparticle sizes found by "direct" techniques as well as superparamagnetic nanoparticle behaviour demonstrated in the magnetization studies. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4759244]

Смотреть статью,
Scopus,
WoS,
Читать в сети ИФ
Держатели документа:
[Edelman, I.
Ivanova, O.
Ivantsov, R.
Velikanov, D.
Zabluda, V.] LV Kirensky Inst Phys SB RAS, Krasnoyarsk 660036, Russia
[Zubavichus, Y.
Veligzhanin, A.] NRC Kurchatov Inst, Moscow 123182, Russia
[Zaikovskiy, V.] Siberian Branch RAS, Boreskov Inst Catalysis, Novosibirsk 630090, Russia
[Stepanov, S.] SI Vavilov State Opt Inst, St Petersburg, Russia
[Artemenko, A.] CNRS, ICMCB, UPR 9048, F-33608 Pessac, France
[Curely, J.
Kliava, J.] Univ Bordeaux 1, CNRS, UMR 5798, LOMA, F-33405 Talence, France

Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Ivanova, O. S.; Иванова, Оксана Станиславовна; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Zabluda, V. N.; Заблуда, Владимир Николаевич; Zubavichus, Y.; Veligzhanin, A. A.; Zaikovskiy, V. I.; Stepanov, S.; Artemenko, A.; Curely, J.; Kliava, J.
}
Найти похожие

19.

Makarov, I. A.
Dependence of the critical temperature of high-temperature cuprate superconductors on hoppings and spin correlations between CuO2 planes / I. A. Makarov, S. G. Ovchinnikov, E. I. Shneider // J. Exp. Theor. Phys. - 2012. - Vol. 114, Is. 2. - P. 329-342, DOI 10.1134/S1063776112020264. - Cited References: 73. - This study was supported in part by the Presidium of the Russian Academy of Sciences (program "Quantum Physics of Condensed Media," project no. 18.7), jointly by the Siberian and Ural branches of the Russian Academy of Sciences (integration projects project no. 40), the Russian Foundation for Basic Research (project no. 09-02-00127), the Presidential Program in Support of Young Scientists in Russia (project no. MK-1683.2010.2), and the federal target program "Specialists" (project no. P891). One of the authors (E.I.Sh.) gratefully acknowledges support from the nonprofit Dynasty foundation. . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
T-J MODEL
   BAND HUBBARD-MODEL
   SINGLE-CRYSTALS
   TRANSITION-TEMPERATURE
   FERMI-SURFACE
   DOPING DEPENDENCE
   THERMAL-EXPANSION
   COPPER OXIDES
   ANISOTROPY
   LA2-XSRXCUO4
Аннотация: The influence of interlayer hoppings on the superconducting transition temperature (T c) in bilayer cuprates has been studied. The parameter of hopping between layers is expressed as t ⊥(k) = t ⊥(cos(k x ) − cos(k y ))2 and treated as a small perturbation for the states of two CuO2 planes described by the t-t′-t″-J* model. In the generalized mean field approximation for dx2−y2{d_{{x. } - {y. }}} symmetry of the superconducting gap, neither the interlayer hopping or exchange interaction, nor the pair hopping between CuO2 layers provides an additional mechanism of Cooper pair formation or an increase in T c. In the concentration dependence of T c, the bilayer splitting of the upper Hubbard band of quasi-holes is manifested as two peaks with temperatures slightly lower than the maximum T c for a single-layer cuprate. Interlayer antiferromagnetic spin correlations suppress bilayer splitting.

Смотреть статью,
Scopus,
WoS,
РИНЦ,
Читать в сети ИФ

Публикация на русском языке Макаров, Илья Анатольевич. Зависимость критической температуры высокотемпературных сверхпроводников от перескоков и спиновых корреляций между CuO2-плоскостями [Текст] / И. А. Макаров, С. Г. Овчинников, Е. И. Шнейдер // Журн. эксперим. и теор. физ. : Наука, 2012. - Т. 141 Вып. 2. - С. 372-386

Держатели документа:
[Makarov, I. A.
Ovchinnikov, S. G.
Shneider, E. I.] Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
[Makarov, I. A.
Ovchinnikov, S. G.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Shneider, E. I.] Reshetnikov Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia

Доп.точки доступа:
Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; Shneider, E. I.; Шнейдер, Елена Игоревна; Макаров, Илья Анатольевич
}
Найти похожие

20.

    Growth, optical and microstructural properties of PbB4O7 plate crystals / A. I. Zaitsev [et al.] // Opt. Mater. - 2014. - Vol. 37. - P. 298–301, DOI 10.1016/j.optmat.2014.06.012. - Cited References: 42. - This study is supported by SB RAS via Projects 28.14 and 43.14, and the Grant of the President of the Russian Federation for the support of leading scientific schools SS-4828.2012.2 and by PSB RAS, Grant 2.5.2. V.V.A. gratefully acknowledge the Ministry of Education and Science of the Russian Federation for financial support . - ISSN 0925-3467. - ISSN 1873-1252
   Перевод заглавия: Рост, оптические и микроструктурные свойства пластинчатых кристаллов PbB4O7

РУБ Materials Science, Multidisciplinary + Optics
Рубрики:
LEAD TETRABORATE
   SINGLE-CRYSTAL
   SUSCEPTIBILITIES
   ANISOTROPY
   STRONTIUM
   SURFACES
   RAMAN
Кл.слова (ненормированные):
PbB4O7 -- Czochralski growth -- Facet -- RHEED -- AFM
Аннотация: Centimeter-sized optical quality plate-like PbB4O7 crystals have been grown by Czochralski method. The fundamental absorption edge has been found at 237 nm (corresponding bandgap 5.75 eV) with the distinct sideband protruding up to 300 nm. The crystals are well faceted with the (100), (010) and (101) planes, (100) surfaces being mostly developed. The etching in diluted nitric acid (5 wt.%) at the temperature of 90 °C have been used to reveal the defect structure and remove melt residuals. The (100) surface shows the presence of etching pits and twin boundaries. The Kikuchi line pattern and developed microrelief with the roughness of ~8 nm have been observed by RHEED and AFM, respectively.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
SB RAS, Akademgorodok, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 690036, Russia
Akademgorodok, SB RAS, Kirensky Inst Phys, Lab Coherent Opt, Krasnoyarsk 690036, Russia
Russian Acad Sci, Inst Semicond Phys, Lab Nanodiagnost & Nanolithog, SB RAS, Novosibirsk 630090, Russia
Russian Acad Sci, Inst Semicond Phys, Lab Opt Mat & Struct, SB RAS, Novosibirsk 630090, Russia
Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia
Novosibirsk State Univ, Novosibirsk 630090, Russia

Доп.точки доступа:
Zaitsev, A. I.; Зайцев, Александр Иванович; Aleksandrovsky, A. S.; Александровский, Александр Сергеевич; Kozhukhov, A. S.; Pokrovsky, L. D.; Atuchin, V. V.; SB RAS [28.14, 43.14]; President of the Russian Federation for the support of leading scientific schools [SS-4828.2012.2]; PSB RAS [2.5.2]; Ministry of Education and Science of the Russian Federation
}
Найти похожие