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141.
G. M. Gurevich S. V. Topalov A. L. Erzinkyan V. P. Parfenova M. Finger V. N. Pavlov J. Slovák R. Drevenak M. Trhlík 《Hyperfine Interactions》1993,78(1-4):497-500
The low-temperature nuclear orientation technique has been used to study the magnetic behaviour of60Co and54Mn impurity atoms in the reentrant spin glass Au0.82Fe0.18. The results obtained for60Co indicate that Co moments follow the distribution of Fe directions. In contrast, Mn moments show a spread directional distribution. These results are the consequence of the different character of Mn-Fe andFe-Fe interactions at short distances. 相似文献
142.
Pavlov V. P. Svechnikov S. V. Sukhanov A. D. 《Theoretical and Mathematical Physics》1971,3(1):341-351
Theoretical and Mathematical Physics - 相似文献
143.
Kyril Dimov Pavel Pavlov 《Journal of polymer science. Part A, Polymer chemistry》1969,7(10):2775-2792
The possibility of obtaining modified cellulose products by reacting cellulose xanthogenate in solutions containing oxidizers and acrylonitrile was studied. The ability of the cellulose xanthogenate–hydrogen peroxide redox system to initiate graft copolymerization of acrylonitrile on the cellulose was demonstrated. The influence of various factors on the processes was investigated. An attempt was made to clarify the nature of the reactions involved. 相似文献
144.
E. A. Pavlov V. A. Serazetdinova A. D. Kagarlitskii B. V. Suvorov 《Chemistry of Heterocyclic Compounds》1971,4(4):488-489
The synthesis of 2, 5-dicyanopyridine from the industrially available 5-ethyl-2-methylpyridine has been effected by oxidative ammonolysis in the presence of a vanadium-tin oxide catalyst and by oxidation with nitric acid to isocinchomeronic acid with the subsequent conversion of the latter into the dichloride, diamide, and dinitrile. The IR spectra of 2, 5-dicyanopyridine have been obtained and its polarographic behavior has been studied.For part L, see [1]. 相似文献
145.
146.
147.
Scalora M Syrchin MS Akozbek N Poliakov EY D'Aguanno G Mattiucci N Bloemer MJ Zheltikov AM 《Physical review letters》2005,95(1):013902
A new generalized nonlinear Schr?dinger equation describing the propagation of ultrashort pulses in bulk media exhibiting frequency dependent dielectric susceptibility and magnetic permeability is derived and used to characterize wave propagation in a negative index material. The equation has new features that are distinct from ordinary materials (mu=1): the linear and nonlinear coefficients can be tailored through the linear properties of the medium to attain any combination of signs unachievable in ordinary matter, with significant potential to realize a wide class of solitary waves. 相似文献
148.
We study the effects of the RKKY interaction between magnetic impurities on the mesoscopic conductance fluctuations of a metal ring with dilute magnetic impurities. At sufficiently low temperatures and strong magnetic fields, the loss of electron coherence occurs mainly due to the scattering off rare pairs of strongly coupled magnetic impurities. We establish a relation between the dephasing rate and the distribution function of the exchange interaction within such pairs. In the case of the RKKY exchange interaction, this rate exhibits 1/B(2) behavior in strong magnetic fields. We demonstrate that the Aharonov-Bohm conductance oscillations may be used as a probe of the distribution function of the exchange interaction between magnetic impurities in metals. 相似文献
149.
We construct supersymmetric Lorentz violating operators for matter and gauge fields. We show that in the supersymmetric standard model the lowest possible dimension for such operators is five, and therefore they are suppressed by at least one power of an ultraviolet energy scale, providing a possible explanation for the smallness of Lorentz violation and its stability against radiative corrections. Supersymmetric Lorentz noninvariant operators do not lead to modifications of dispersion relations at high energies thereby escaping constraints from astrophysical searches for Lorentz violation. 相似文献
150.
E. V. Brakhman G. V. Danilyan A. V. Fedorov I. L. Karpikhin V. A. Krakhotin V. S. Pavlov R. Golub E. I. Korobkina T. Wilpert 《JETP Letters》2004,80(11):675-677
The preliminary result of the P-odd asymmetry of prompt neutron emission in 235U fission induced by polarized cold neutrons is a=(2.7±0.8)×10?5. Only scission neutrons can show such asymmetry, whereas neutrons emitted by excited fragments are the unavoidable background, which suppress the sought asymmetry. The P-odd asymmetry of light fragment emission for 235U is equal to (8.4±0.6)×10?5. Assuming that the last figure defines the parity mixture of the fissile nucleus, then the suppression factor is equal approximately to 3. 相似文献