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Article
Numerical Analysis of the Pulse Field Penetration into Bulk Superconducting Annulus
The dynamics of the pulsed magnetic field penetration into a superconducting annulus with an anisotropic distribution of the critical current density is studied by numerical methods. Comparison of the geometry...
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Article
Measurement of Parameters of Superconducting Coils with Bare Windings
The article discusses the problem of determining electrical parameters of superconducting coils with bare windings. Procedures for measuring these parameters are described; in particular, inductance was measur...
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Article
Visualization of the Field Penetration at the Shielding Current Break and Its Restoration in the Pulse Magnetized YBCO Ring
The Hall scanning method was used to measure the distribution of the trapped magnetic field above the melt grown high temperature superconducting (YBCO) ring at various modes of the pulsed field magnetization....
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Article
2G HTS tape and double pancake coil for cryogen-free superconducting magnet
The superconducting magnetic system (SMS) project is proposed. The second-generation high-temperature superconducting tapes for SMS are developed, fabricated and tested in NRC “Kurchatov Institute.” The magnet...
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Article
Influence of Axial Pressure on Parameters of Single Pancake HTS Coil
The single pancake HTS coil (inner diameter (ID) 85 mm, outer diameter (OD) 96.5 mm, 35 turns) was investigated under axial pressure up to 12 tons in liquid nitrogen to test the influence of axial pressure on ...
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Article
Power Exponent in CVC and Critical Current of Y-Ba-Cu-O Films
The current–voltage characteristics (CVC) of Y-Ba-Cu-O films, in which the critical current density Jc decreases with increase their thickness, are analyzed. It was established that the CVC of the films is descri...
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Article
Pulsed Magnetization of a Short-Circuited HTSC Coil
We have studied trapped magnetic fields and their relaxation during pulsed magnetization of a 20-turn short-circuited coil made of a stabilized HTSC-2G tape at liquid nitrogen temperature. The highest trapped ...
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Article
Magnetization of superconducting rings by long-duration pulses
After pulsed magnetization of the rings of high-temperature superconductors with a rectangular cross section, the magnitude of the trapped field has been measured depending on the decay time of the magnetizati...
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Article
Rapidly quenched ferromagnetic ribbons with shape memory for magnetically controlled micromechanic devices
One-way shape-memory effect (SME) controlled by temperature and magnetic field in rapidly melt-quenched (RMQ) Heusler-alloy (Ni53Mn24Ga23) ribbons is experimentally studied. Two-way SME that results from training...
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Article
Flux Jumps at Pulsed Field Magnetization
A flux jump is a result of 10–20 times reduction of the shielding current at pulsed field magnetization of a melt-grown High Temperature Superconductor (HTS) annuli. The induced circular currents and the relat...
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Article
The method of “double thickness” for studying heat transfer from metal tapes to liquid nitrogen
To study heat transfer from a metal surface, the method of “double thickness” is proposed, in which the heating of the central region of a conductor and its average temperature are measured. As a result, the s...
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Article
Pulse Heating and Negative Magnetic Relaxation on Bulk HTS Annuli
Negative magnetic relaxation (S< 0) can be observed in pulsed field magnetization of superconducting single-domain annuli (rings of rectangular cross section) under certain conditions. The radial distributions of...
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Article
Develo** an approach based on the formation of YBa2Cu3O x -interlayer-YBa2Cu3O x epitaxial structures with high current-carrying ability
An approach based on the formation of YBa2Cu3O x -interlayer-YBa2Cu3O x multilayer epitaxial structures with high current-carrying ability is p...
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Article
Small-Sized Hybrid Magnet with Pulsed Field Magnetization
Small-sized hybrid magnet (HM) operated in liquid nitrogen was constructed. It consists of two superconducting Y-Ba-Cu-O annuli, placed on soft magnetic cores made of permenduire. The magnetization of the supe...
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Article
A Hybrid Magnet with a Logarithmic in Time Field Deviation
The pulse-field magnetization of a hybrid magnet (a combination of a soft-magnetic material and a melt-grown Y-Ba-Cu-O superconductor) has been investigated at T=78 K It is shown that choosing the pulse amplitude...
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Article
Advantages and disadvantages of hybrid magnet for nuclear magnetic resonance
The advantages and disadvantages of a hybrid magnet composed of a soft ferromagnet and an Y-Ba-Cu-O superconducting ring grown by melt cooling and magnetized by the multipulse method are considered.
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Article
Magnetic flux relaxation in a pulse-magnetized Y-Ba-Cu-O superconductor
Trapped flux relaxation at the center of a single-domain Y-Ba-Cu-O superconductor upon pulsed field magnetization has been studied at T = 78 K. In the case of a weakly magnetized sample, the induction increases a...
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Article
Superconducting cellular MgB2
A new composite superconducting material in the form of a cellular structure consisting of large Mg grains surrounded by thin MgB2 layers has been prepared. The superconducting properties of such a cellular struc...
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Article
On the kinetics of anomalous muonium in silicon
The spin relaxation rate of anomalous muonium in a longitudinal magnetic field was measured in a silicon single crystal. The results are treated as the diffusion of anomalous muonium in a silicon crystal.
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Article
Kinetics of muonium formation in liquid helium
The spatial distribution of electron-muon pairs in superfluid helium (He-II) is determined using a new algorithm for reconstructing the muonium (Mu) formation probability. It is shown that because a gap is presen...
