Results 51 to 60 of about 6,016 (192)

Transmission of Radio‐Frequency Waves and Nuclear Magnetic Resonance in Lanthanum Superhydrides

open access: yesAdvanced Science, Volume 13, Issue 23, 23 April 2026.
1H NMR and radio‐frequency transmission measurements of lanthanum superhydrides at 165 GPa reveals a transition at 260–280 K by a strong suppression of the signal intensity, significant changes in NMR spectra, including a dramatic decrease of the relaxation rate 1/T1T, and pronounced shielding effect, which may have a superconducting nature.
Dmitrii V. Semenok   +8 more
wiley   +1 more source

The Inverse Magnetocaloric Effect of MgB2 Superconductor

open access: yesJournal of Low Temperature Physics, 2022
AbstractThe magnetocaloric effect-(MCE) of MgB2 is simulated, considering the effect of sintering temperature on MCE. The results show that MCE of MgB2 samples is an inverse type in a temperature range of diamagnetic-paramagnetic transition. Moreover, the MCE for MgB2 is improved with high sintering temperature.
Youssef H. Abdelalim   +5 more
openaire   +1 more source

Effect of disorder on the NMR relaxation rate in two-band superconductors

open access: yes, 2006
We calculate the effect of nonmagnetic impurity scattering on the spin-lattice relaxation rate in two-band superconductors with the s-wave pairing symmetry.
B. Mitrović   +7 more
core   +1 more source

Specific Heat Discontinuity in Impure Two-Band Superconductors [PDF]

open access: yes, 2003
The Ginzburg-Landau coefficients, and the jump of the specific heat are calculated for a disordered two-band superconductor. We start with the analysis of a more general case arbitrary anisotropy.
A.A. Abrikosov   +41 more
core   +2 more sources

The Future of Hydrogen‐Powered Aviation: Technologies, Challenges, and a Strategic Roadmap for Sustainable Decarbonization

open access: yesAdvanced Energy and Sustainability Research, Volume 7, Issue 3, March 2026.
Hydrogen‐powered aviation offers a transformative pathway to zero‐emission flight by eliminating in‐flight CO2 emissions. Key considerations include propulsion systems (fuel cells and hydrogen combustion), cryogenic storage and insulation challenges, infrastructure and cost barriers, and supply‐chain constraints.
Mubasshira   +4 more
wiley   +1 more source

Transport critical current density in Fe-sheathed nano-SiC doped MgB2 wires

open access: yes, 2002
The nano-SiC doped MgB2/Fe wires were fabricated using a powder-in-tube method and an in-situ reaction process. The depression of Tc with increasing SiC doping level remained rather small due to the counterbalanced effect of Si and C co-doping.
Dou, Shi X.   +7 more
core   +2 more sources

Recent Advances of Two‐Dimensional MBene Materials: From Synthesis and Properties to Application

open access: yesSmall Structures, Volume 7, Issue 3, March 2026.
With the two‐dimensional MBenes center as the reference, the system presents a table of contents diagram that provides an overview of their properties, synthesis methods, and application fields. Two‐dimensional transition metal borides (MBenes) attract considerable research interest for their exceptional electrical conductivity, high mechanical ...
Chunxiao Wang, Jinming Wang, Junjie Wang
wiley   +1 more source

Anomalous Magnetic Response of Annealed V0.60−xSixTi0.40 Alloys within the Superconducting Phase

open access: yesphysica status solidi (b), Volume 263, Issue 1, January 2026.
Annealed V0.60−xSixTi0.40 alloys exhibit an anomalous magnetic response in their mixed state, where magnetization measured during cooling in the presence of a magnetic field is lower than during warming in the same field. This unusual thermomagnetic response, distinct from conventional type‐II superconductors, is attributed to the high‐field ...
Asi Khandelwal   +2 more
wiley   +1 more source

Point-Contact Spectroscopy of Two-Band Superconductor MgB2 [PDF]

open access: yes, 2006
invited talk at NATO ARW "Frontiers in Spectroscopy of Emergent Materials" 13 -19 Sept.
Yanson, I. K., Naidyuk, Yu. G.
openaire   +2 more sources

Mgb2 Nonlinear Properties Investigated under Localized High RF Magnetic Field Excitation

open access: yes, 2012
In order to increase the accelerating gradient of Superconducting Radio Frequency (SRF) cavities, Magnesium Diboride (MgB2) opens up hope because of its high transition temperature and potential for low surface resistance in the high RF field regime ...
B. G. Ghamsari   +7 more
core   +3 more sources

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