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PROCEDIMENTO DI TRASFORMAZIONE DI MOTORE AUTOMOBILISTICO O MOTOCICLISTICO IN MOTORE AVIO (AVIONIZZAZIONE)
No full textPROCEDIMENTO DI TRASFORMAZIONE DI MOTORE AUTOMOBILISTICO O MOTOCICLISTICO IN MOTORE AVIO (AVIONIZZAZIONE
Effects of Weak Links in the Nonlinear Microwave Response of MgB2 Superconductor
No full textWe report experimental results of second-harmonic (SH) response at microwave frequency
in several ceramic MgB2 samples, prepared by different methods. The SH signal has been
investigated as a function of the temperature and DC magnetic field. The investigation has
been carried out at low magnetic fields, where nonlinear processes arising from motion of
Abrikosov fluxons are ineffective. We show that the low-temperature SH emission is ascribable
to processes involving weak links. Comparison among the peculiarities of the SH signal
radiated by the different samples shows that the presence of weak links strongly depends on
the sample preparation method, as well as on the purity and morphology of the components
used for the preparation
Structural features of Ag-1 wt.% Mg alloys internally oxidised at high temperatures investigated by X-ray diffraction
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Analysis of the minority crystalline phases in bulk superconducting MgB2 obtained by reactive liquid Mg infiltration
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