排序方式: 共有37条查询结果,搜索用时 15 毫秒
1.
S. G. Barsov A. L. Getalov V. P. Koptev L. A. Kuzmin S. M. Mikirtychyants G. V. Shcherbakov 《Hyperfine Interactions》1994,86(1):549-554
The giant mobility of the magnetic flux in FrFC and ZFC conditions have been studied in textured sample Bi2Sr2CaCu2O2- bySR. The comparison of results obtained in both cases showed that it is difficult to explain this phenomenon by only thermally activated flux creep and the melting of vortex lattice must be considered. The magnetic field dependence of the melting temperature was obtained for H<90mT. It is shown that the possibility of vortex motion does not affect the results of FC-measurements. 相似文献
2.
S. G. Barsov S. I. Vorob’ev V. P. Koptev S. A. Kotov S. M. Mikirtych’yants G. V. Shcherbakov L. A. Aksel’rod G. P. Gordeev V. N. Zabenkin I. M. Lazebnik 《Physics of the Solid State》2007,49(8):1492-1497
The Pd1?x Fe x )0.95Mn0.05 alloy with random competing interaction was studied by measuring the muon spin relaxation in an external transverse magnetic field and in a zero magnetic field. Using the measured temperature dependence of the dynamic relaxation rate λ and the characteristics of the distribution of local static fields, the phase states of the sample under study are refined. In particular, it is shown that the ferromagnetic and spin-glass states coexist simultaneously in the sample below 25 K. Combined studies of the sample using the μSR and neutron depolarization methods made it possible to determine the size of magnetic inhomogeneities to be 2–6 μm in the temperature range 5–40 K. 相似文献
3.
S. G. Barsov A. L. Getalov S. L. Ginsburg V. P. Koptev S. P. Kruglov L. A. Kuzmin S. V. Maleyev E. I. Maltsev S. M. Mikirtychyants N. A. Tarasov G. V. Shcherbakov V. G. Grebinnik V. N. Duginov A. B. Lazarev V. G. Olshevski S. N. Shilov V. A. Zhukov I. I. Gurevich B. F. Kirillov A. I. Klimov B. A. Nikolski A. V. Pirogov A. N. Ponomarev V. A. Suetin 《Hyperfine Interactions》1991,64(1-4):415-419
The zero field μSR-method has been used to study the magnetism in the disordered magnetic alloy Fe82−xNixCr18 near the three-critical, pointx=25. The dynamic and static local field distributions are analyzed. The difference between spin-glass states obtained either
from the paramagnetic or after the double transition is discussed. 相似文献
4.
S.?G.?Barsov S.?I.?Vorob’ev E.?I.?Golovenchits A.?A.?Dzyuba E.?N.?Komarov V.?P.?Koptev S.?A.?Kotov V.?A.?Sanina G.?V.?Shcherbakov 《Bulletin of the Russian Academy of Sciences: Physics》2010,74(5):705-707
The present paper is devoted to studying the multiferroics HoMnO3, YMnO3, EuMn2O5, and GdMn2O5 by means of the µSR-method. Determination of the dynamic relaxation parameter 7n and the distribution of the local magnetic fields results in a clear phase diagram. 相似文献
5.
S. G. Barsov A. L. Getalov V. A. Gordeev V. A. Evseev R. F. Konopleva S. P. Kruglov V. I. Kudinov L. A. Kuz'min S. M. Mikirtychants E. V. Minaichev G. G. Myasishcheva Y. V. Obukhov G. I. Savel'ev V. G. Firsov G. V. Shcherbakov 《Hyperfine Interactions》1984,18(1-4):551-555
Radiation defects are shown experimentally to affect differently the normal and anomalous muonium states in silicon. This evidences essentially different mobilities of the two muonium states in the sample lattice. 相似文献
6.
Yaschenko S Dymov S Kacharava A Komarov V Macharashvili G Rathmann F Barsov S Gebel R Hartmann M Khoukaz A Kulessa P Kulikov A Kurbatov V Lang N Lehmann I Lorentz B Mersmann T Merzliakov S Mikirtytchiants S Mussgiller A Nioradze M Ohm H Prasuhn D Schleichert R Seyfarth H Steffens E Stein HJ Ströher H Uzikov Y Zalikhanov B Zhuravlev N 《Physical review letters》2005,94(7):072304
A measurement of the analyzing power A(y) of the p-->d--> (p p) + n reaction was carried out at the ANKE spectrometer at COSY at beam energies of 0.5 and 0.8 GeV by detection of a fast forward proton pair of small excitation energy E(pp) < 3 MeV. The S-wave dominance in the fast diproton is experimentally demonstrated in this reaction. While at T(p) = 0.8 GeV the measured analyzing power almost vanishes, it rises to nearly unity at T(p) = 0.5 GeV for neutrons emitted at theta(c.m.)(n) = 167 degrees. The results are compared with a model taking into account one-nucleon exchange, single scattering, and Delta(1232) excitation in the intermediate state. The model describes fairly well the unpolarized cross section obtained earlier and the analyzing power at 0.8 GeV; it fails to reproduce A(y) at 0.5 GeV. 相似文献
7.
S. G. Barsov S. I. Vorob’ev V. P. Koptev E. N. Komarov S. A. Kotov S. M. Mikirtych’yants G. V. Shcherbakov A. E. Pestun Ya. M. Mukovskiĭ 《JETP Letters》2007,85(12):658-661
The magnetic properties of multiferroics HoMnO3 and YMnO3 have been investigated using the muon (μSR) method. Analysis of the dependence of the dynamical relaxation rate λ and characteristics of the distribution of local static fields makes it possible to more precisely determine the phase states of the samples under investigation. 相似文献
8.
S. G. Barsov A. L. Getalov V. G. Grebinnik V. A. Gordeev I. I. Gurevich Yu. M. Kagan A. I. Klimov S. P. Kruglov L. A. Kuzmin A. B. Lazarev S. M. Mikirtychyants B. A. Nikolsky A. V. Pirogov A. N. Ponomarev V. I. Selivanov G. V. Shcherbakov V. A. Suetin V. A. Zhukov 《Hyperfine Interactions》1984,17(1-4):145-149
A muon spin relaxation rate in a super-pure sample of bismuth has been measured. The experimental data and the theory of coherent diffusion in crystalline lattices with shifted levels are compared. 相似文献
9.
Gabrovská D Rysová J Filová V Plicka J Cuhra P Kubík M Barsová S 《Journal of AOAC International》2006,89(1):154-160
An interlaboratory study with 10 participants was performed to obtain validation and performance data for an enzyme-linked immunosorbent assay (ELISA) kit developed for quantitative gluten determination in foods. The ELISA kit used for this study is based on 2 monoclonal and 1 polyclonal antibody developed by Immunotech, a Beckman Coulter Co. This kit did not show any false positive results or cross-reactivity with oat, rice, maize, and buckwheat. The gliadin standard from the Working Group on Prolamin Analysis and Toxicity was included in the kit as reference material for calibration. All participants obtained a gliadin ELISA kit with Standard Operational Procedure and a form for recording test results. The study included 13 samples labeled as "gluten-free" and 2 samples spiked by wheat flour. Seven samples had gliadin content below the limit of quantitation (LOQ) of the method, and 1 sample exceeded the highest calibration level. Gliadin content in the range from 10 to 157 mg/kg (1st day) and from 11 to 183 mg/kg (2nd day) was found in 7 samples (including 2 spiked samples). Results of these samples were used for further statistical analysis and evaluation. The Cochran, Dixon, and Mandel statistical tests were applied for detection of outliers. The LOQ of the kit was estimated. 相似文献
10.
S. G. Barsov A. L. Getalov G. Grebinnik I. I. Gurevich B. F. Kirillov A. I. Klimov S. P. Kruglov L. A. Kuzmin A. B. Lazarev S. M. Mikirtychyants N. I. Moreva B. A. Nikolsky A. V. Pirogov A. N. Ponomarev V. I. Selivanov G. V. Shcherbakov S. N. Shilov V. A. Suetin V. A. Zhukov 《Hyperfine Interactions》1986,31(1-4):339-343
It is shown that the temperature dependence Λ (T) of the muon spin relaxation rate in the paramagnetic state of dysprosium
and holmium does not reveal any singularity at T−>TN′ where TN is the Neel temperature. This result contradicts the assumption of the second-order antiferromagnetic phase-transition in
these metals and is in good agreement with computations within the renormalization group method. 相似文献