Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Krasnoperov, E. P."'
Autor:
Krasnoperov, E. P., Guryev, V. V., Shavkin, S. V., Krylov, V. E., Sychugov, V. V., Korotkov, V. S., Ovcharov, A. V., Volkov, P. V.
The project of superconducting magnetic system (SMS) for the magnetic refrigerator machine is proposed. The second-generation high-temperature superconducting tapes for SMS are developed, fabricated and tested in NRC Kurchatov Institute. The magnet c
Externí odkaz:
http://arxiv.org/abs/1902.09789
The superconducting current breaking effect at pulsed field magnetization of HTS annuli was carefully investigated. It is proposed the simple model for qualitative description of this process. In particular, it is shown the appearance of a narrow sec
Externí odkaz:
http://arxiv.org/abs/1611.06071
Flux jumps lead to 10-20 times reduction of the shielding currents at a pulsed field magnetization of a melt-grown HTS annuli. The induced circular currents and the related trapped field are small after a field pulse since the duration of the pulse i
Externí odkaz:
http://arxiv.org/abs/1512.00986
Autor:
Krasnoperov, E. P.
It was observed that the trapped magnetic moment of HTS tablets or annuli increases in time (negative relaxation) if they are not completely magnetized by a pulsed magnetic field. It is shown, in the framework of the Bean critical-state model, that t
Externí odkaz:
http://arxiv.org/abs/1206.0861
Autor:
Krasnoperov, E. P., Kartamyshev, A. A., Puzanov, D. I., Polushchenko, O. L., Nizelskij, N. A.
The pulsed-field magnetization of hybrid magnet (soft ferromagnetic and melt-grown superconductor Y-Ba-Cu-O) was investigated at T = 78K. It is shown that choosing the pulse amplitude one can create a logarithmic in time field deviation near the spec
Externí odkaz:
http://arxiv.org/abs/0911.4588
Autor:
Kartamyshev, A. A., Krasnoperov, E. P., Kuroedov, Yu. D, Nizhelskiy, N. A., Poluschenko, O. L
A magnetic field relaxation at the center of a pulse-magnetized single-domain Y-Ba-Cu-O superconductor at 78K has been studied. In case of a weak magnetization, the magnetic flux density increases logarithmically and normalized relaxation rate define
Externí odkaz:
http://arxiv.org/abs/0812.3504
Porous magnesium diboride samples have been prepared by the heat treatment of a pressed mixture of Mg and MgB2 powders. It was found that linked superconducting structure is formed down to the minimum normalized density gamma= d/do= 0.16 (percolation
Externí odkaz:
http://arxiv.org/abs/cond-mat/0503614
Autor:
Cherechukin, A. A., Khovailo, V. V., Koposov, R. V., Krasnoperov, E. P., Takagi, T., Tani, J.
Publikováno v:
J. Magn. Magn. Mater. 258-259 (2003), pp. 523-525
The temperature and magnetic field dependencies of Ni-Mn-Ga polycrystals deformation are investigated. Ingots were prepared by arc-melting in argon atmosphere and further annealing. A training procedure (cycling across the martensitic transition poin
Externí odkaz:
http://arxiv.org/abs/cond-mat/0304425
Steady state propagation of a magnetic perturbation along a monofilament superconducting wire in circumstances of thermomagnetic instability was investigated. At temperature T=4.2K and magnetic field B=0.5-0.7T the propagation velocity is v = 2.5 - 3
Externí odkaz:
http://arxiv.org/abs/cond-mat/0304264
Autor:
Filippov, D. A., Khovailo, V. V., Koledov, V. V., Krasnoperov, E. P., Levitin, R. Z., Shavrov, V. G., Takagi, T.
Publikováno v:
J. Magn. Magn. Mater. 258-259 (2003), pp. 507-509
Magnetic properties of a polycrystalline alloy Ni$_{2.19}$Mn$_{0.81}$Ga, which undergoes a first-order magnetostructural phase transition from cubic paramagnetic to tetragonal ferromagnetic phase, are studied. Hysteretic behavior of isothermal magnet
Externí odkaz:
http://arxiv.org/abs/cond-mat/0303187