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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.

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

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

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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

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

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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
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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".

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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.
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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".

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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.
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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.

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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.
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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.

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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]
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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.

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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.
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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.

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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
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