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1.
Shcherbinin S. V. Volchkov S. O. Swindells Ch. Nicholson B. Atkinson D. Kurlyandskaya G. V. 《Russian Physics Journal》2020,63(1):1-8
Russian Physics Journal - The paper presents the calculation results of the coplanar waveguide geometry using the method of conformal mapping and computerized simulation with COMSOL Multiphysics... 相似文献
2.
Magnetic Behaviour of Tb/Si Nanoscale Multilayers with Small Thickness of Rare Earth Layers 下载免费PDF全文
A.V. Svalov V.O. Vas'kovskiy G.V. Kurlyandskaya J.M. Barandiaran N.N. Schegoleva A.N. Sorokin 《中国物理快报》2007,24(6):1717-1719
We report the magnetic properties of Tb/Si multilayers obtained by rf-sputtering at the Tb layer thickness LTb = 3 nm. Analysis of the magnetization processes indicates more complex behaviour than canonical spinglass transition. It is more probable that these multilayers contain both Tb superparamagnetic particles and Tb-Si spin-glass alloys. 相似文献
3.
Svalov A. V. Lepalovskii V. N. Stepanova E. A. Makarochkin I. A. Vas’kovskii V. O. Larañaga A. Kurlyandskaya G. V. 《Physics of the Solid State》2021,63(10):1558-1563
Physics of the Solid State - The results of the study of the magnetic properties of exchange coupled Tb–Co/FeNi film structures obtained by magnetron sputtering in a wide range of... 相似文献
4.
G.V. Kurlyandskaya S.M. Bhagat J.C. Aphesteguy 《Journal of Physics and Chemistry of Solids》2011,72(4):276-285
Microwave absorption was studied for magnetic nanoparticles of Fe3O4 (A) prepared by co-precipitation and Ni0.35Cu0.15Zn0.5Fe2O4 (B) nanoparticles prepared by the sol-gel combustion method at different temperature. In all cases only one ferromagnetic resonance line was observed which indicated that the materials were magnetically uniform. The linewidths were large mainly because of the wide variations in particle sizes, shapes and orientations. As expected, A type nanoparticles showed no absorption at zero-field. However, B type nanoparticles exhibited a sizable loss at a zero-field and the effect increases with the increase of reaction temperature. Mechanical crushing of the sample further enhanced the absorption. 相似文献
5.
M. A. Andreeva R. A. Baulin M. M. Borisov E. A. Gan’shina G. V. Kurlyandskaya E. Kh. Mukhamedzhanov Yu. L. Repchenko A. V. Svalov 《Journal of Experimental and Theoretical Physics》2018,126(6):802-810
The dichroic effect (“rotated” polarization) in the reflectivity from a magnetically ordered sample is experimentally studied at the station PHASE of the Kurchatov Synchrotron Radiation Source. The experiments are performed for the Gd0.23Co0.77 film, which has a compensation temperature Tcomp ≈ 433 K, using linearly polarized radiation of the photon energy of 7930 eV (L2 absorption edge of gadolinium) at room temperature. The developed theory of reflectivity accounted for the magnetic contributions to the scattering amplitude predicts the appearance of a peak for the orthogonal (to the incident polarization) polarization of the reflected radiation near the critical angle of the total external reflection. The experiment reveals the significant difficulties because of the incomplete σ polarization of the synchrotron beam, the beam instability, and so on. Therefore, a rotated-polarization peak has been detected near the critical angle but at the limits of the measurement accuracy. In principle, our experimental technique could be an alternative to circular polarization experiments, which are widely used at synchrotrons to study magnetic ordering. However, as we have shown, it makes high demands of the radiation source parameters. 相似文献
6.
A. V. Svalov G. V. Kurlyandskaya H. Hammer P. A. Savin O. I. Tutynina 《Technical Physics》2004,49(7):868-871
The saturation magnetization, the perpendicular and rotational anisotropy constants, and the coercitivity of Ni75Fe16Cu5Mo4 thin magnetic films produced by rf sputtering are measured in the initial state and after annealing. A relation between the presence of perpendicular anisotropy and the “transcritical” state in the films is established. It is shown that, after additional thermal treatment, the magnetic softness of the films can be improved. 相似文献
7.
I. G. Solomonik I. I. Kurlyandskaya V. Ya. Danyushevskii V. I. Yakerson 《Russian Chemical Bulletin》1984,33(10):1988-1992
8.
Kurlyandskaya I. I. Solomonik I. G. Glazunova E. D. Treger Yu. A. Flid M. R. 《Kinetics and Catalysis》2001,42(3):381-389
The formation of heterogeneous mercury-, zinc-, and copper-containing catalytic systems obtained by supporting salt components (SCs) without a solvent is studied. It is shown that due to strong interaction between SC and support, the size of salt clusters on the surface and their relative contribution decrease. That is, the concentration of excess salt phases decreases. The dispersity increases up to molecular distribution. When surface-linked two-dimensional disordered structures are formed, the state of salt phases in the compositions of catalytic systems changes. The surface mobility of salt clusters during the contact with the reaction medium is found. Compared to the systems obtained by impregnation with aqueous solutions, the proposed systems are 2–3 times more thermally stable, their surface is enriched in defect structures that are active in catalysis, and the processes of organochlorine synthesis become more efficient. 相似文献
9.
Hoang Kim Bong Hoang Huu Binh I. I. Kurlyandskaya A. N. Nyrkova D. I. Yamandii O. N. Temkin 《Russian Journal of Applied Chemistry》2013,86(11):1691-1701
The dependence of the characteristics of Zn(OAc)2/C catalysts for vinyl acetate synthesis on the solution circulation rate, on the temperature and initial concentration of zinc acetate solution, and on the procedures for modification of activated carbons with oxidants was studied with the aim to achieve uniform distribution of the supported active component (zinc acetate). Oxidation of activated carbons with hydrogen peroxide and nitric acid increases the adsorption rate and the amount of adsorbed zinc acetate. Treatment of the support with acetic acid leads to an increase in the adsorption capacity for zinc acetate, to more uniform distribution of the active component over the surface, and to enhancement of the catalyst activity. The hydrodynamic regime of stirring in the two-phase system consisting of the support and zinc acetate solution is an important factor determining the activity and stability of the zinc acetate catalyst for vinyl acetate synthesis. 相似文献
10.
S. O. Volchkov V. N. Lepalovskii A. V. Svalov V. O. Vas’kovskii G. V. Kurlyandskaya 《Russian Physics Journal》2009,52(10):1092-1097
Magnetic properties, special features of magnetic anisotropy, magnetic domain structure, and huge magnetic impedance of permalloy/copper/permalloy
film elements fabricated by the method of ion-plasma sputtering are investigated. Elements with different plane geometry of
layers are analyzed. In the first case, all layers of the element have identical sizes of 10 × 0.5 mm, and in the second case,
the width of the copper layer is narrowed down to 0.2 mm. The magnetic properties and the magnetic impedance of the examined
film elements allow them to be used as detectors of low magnetic fields. The elements of the first type are more adapted to
low excitation current frequencies (up to 150 MHz), and those of the second type are more adapted to high frequencies (above
150 MHz). 相似文献