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E. Yu. Klimenko S. V. Shavkin P. V. Volkov 《Journal of Experimental and Theoretical Physics》1997,85(3):573-587
Anisotropy of critical currents and electric fields in superconductors with strong pinning has been ascribed in the macroscopic
model to features of the material equation system relating the electric field to the current density in a superconductor.
The anisotropy of the pinning proper is described by an operator relating the pinning force density to the vectors of magnetic
induction and Lorentz force. In the approximation of an extended critical state model, a feasible expression of this operator
is given in the form of an algorithm based on the concept of a collective anisotropic potential well containing fluxoids.
The current-carrying capacity of a strongly anisotropic niobium-titanium foil as a function of the orientation of the current
density and applied field with respect to the principal axes of the material has been investigated in detail. Given measurements
of the transverse electric fields in the foil under magnetic fields normal to the foil plane, we can plot cross sections of
surfaces describing the pinning force density in the space of magnetic induction and Lorentz force.
Zh. éksp. Teor. Fiz. 112, 1055–1081 (September 1997) 相似文献
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Karpov I. D. Irodova A. V. Kruglov V. S. Shavkin S. V. Em V. T. 《Technical Physics》2020,65(7):1051-1057
Technical Physics - Neutron stress diffractometry is used to study internal (residual) stress in a tape made of the AISI 310S stainless steel with a thickness of 100 μm and a width of 4 mm in... 相似文献
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Ovcharov A. V. Karateev I. A. Karateeva K. G. Guryev V. V. Shavkin S. V. Vasiliev A. L. 《Crystallography Reports》2019,64(6):862-866
Crystallography Reports - The microstructure of a cold-rolled tape made of Nb–50 wt % Ti superconducting alloy before and after heat treatment has been investigated by transmission electron... 相似文献
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A. L. Vasil’ev A. Ballarino L. Bottura S. Yu. Gavrilkin P. N. Degtyarenko I. A. Karateev V. S. Kruglov S. T. Latushkin A. V. Lunev A. I. Ryazanov E. V. Semenov V. N. Unezhev R. Flükiger S. V. Shavkin 《Bulletin of the Lebedev Physics Institute》2017,44(4):118-121
The results of the study of magnetization and dynamic magnetic susceptibility are correlated with changes in the microstructure of superconducting intermetallic Nb3Sn plates irradiated at the Kurchatov Institute cyclotron with fast protons with an energy of 12.8 MeV to a fluence of 1 · 1018 cm?2. The dependence of the superconducting transition temperature on the total irradiation dose is determined. For one of the samples, the dynamic magnetic susceptibility exhibits several steps corresponding to superconducting transitions at different temperatures. It is assumed that a Nb-enriched phase is separated in the region of maximum radiation damages. A microstructural analysis shows the appearance of randomly oriented Nb-enriched regions from 0.1 to 0.5 μm in size. 相似文献
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