Zobrazeno 1 - 10
of 100
pro vyhledávání: '"Magnesium diboride"'
Publikováno v:
Physica C: Superconductivity and its Applications. 555:7-14
Recently, new high-temperature superconductors have been discovered. One such material, magnesium diboride, is an ideal candidate for superconducting technology due to its high critical temperature (39 K), high critical current, and relative inexpens
Autor:
S. Yu. Gavrilkin, Evgeny A. Levashov, N. V. Shvyndina, K. S. Pervakov, D. Yu. Kovalev, Pavel Loginov, E.I. Patsera, A. Yu. Potanin, V. A. Vlasenko
Publikováno v:
Physica C: Superconductivity and its Applications. 541:1-9
We report the results of synthesizing the MgB2-based material in the layerwise combustion and thermal explosion modes. For the initial temperature of 500 °C, the combustion temperatures in the layerwise combustion and thermal explosion modes are ide
Publikováno v:
Physica C: Superconductivity and its Applications. 578:1353749
Three (MgB2)1-x(SnO2)x samples with x ranging from 0 to 5 wt% were prepared by the in situ route to study the effect of tin dioxide additions on the superconducting properties of MgB2 bulk materials. All of the reacted samples were slightly Mg defici
Publikováno v:
Physica C: Superconductivity and its Applications. 524:13-17
Magnesium diboride has shown potential as an alternative material for the application of superconducting RF cavities. However, if MgB 2 films are fabricated on niobium substrates with HPCVD method, hydrogen brittleness will cause cracks on MgB 2 film
Autor:
Obinna Abah, Okechukwu Ogbuu
Publikováno v:
Physica C: Superconductivity and its Applications. 519:100-103
A two-band BCS model with interactions, both phonon and non-phonon induced interactions, were employed to investigate the pressure dependence on superconducting transition temperature of two-band superconductor. We derived the transition temperature
Publikováno v:
Physica C: Superconductivity and its Applications. 516:1-9
We analyzed microstructure of two undoped MgB2 single core wires prepared by two different technologies – in-situ powder-in-tube (PIT) technology and internal magnesium diffusion (IMD) processes. Their microstructure showed mainly different densiti
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Autor:
Sergey L. Bud'ko, Paul C. Canfield
Publikováno v:
Physica C: Superconductivity and its Applications. 514:142-151
Over the past 14 years MgB2 has gone from a startling discovery to a promising, applied superconductor. In this article we present a brief overview of the synthesis and the basic superconducting properties of this remarkable compound. In particular,
Publikováno v:
Physica C: Superconductivity and its Applications. 506:1-5
In type-II superconductors at T = 0 the critical current density is determined by the pinning of flux lines. Considering an arbitrarily shaped energy landscape the pinning force at each pinning site is given by the derivative of the flux line energy
Autor:
Y.D. Agassi, Daniel E. Oates
Publikováno v:
Physica C: Superconductivity and its Applications. 506:119-132
Calculations of the microwave intermodulation distortion (IMD) and surface resistance of impurity-doped YBCO, MgB 2 and Nb are presented. These are qualitatively distinct superconductors due to their energy-gap symmetries, d-wave (l = 2), i-wave (l =