28 citations · 75 across the 6 of their papers we have counts for
7 papers
Grain size determination of superconducting MgB2 powders from magnetization curve, image analysis and surface area measurement
Maurizio Vignolo, Gianmarco Bovone, Emilio Bellingeri +5
The present article reports a method for the average grain size evaluation of superconducting nano-particles through their magnetic properties. The use of SQUID magnetometry to det…
In-situ high energy synchrotron X-ray diffraction investigation of the MgB2 phase formation and MgB2 tapes sintering
Maurizio Vignolo, Gennaro Romano, Davide Nardelli +7
In the present paper we report an in-situ high-energy X-ray diffraction analysis of MgB2 tapes during the preparation process. The experiment was performed in a specifically design…
Superconducting performance of ex-situ SiC-doped MgB2 mono-filamentary tapes
Gennaro Romano, Arpita Vajpayee, Maurizio Vignolo +2
We report on the superconducting performance of the ex-situ SiC doped MgB2 monofilamentary tapes. Polycrystalline powders of MgB2 doped with 5 and 10 wt% SiC were synthesized by co…
A novel process to produce amorphous nano-sized B useful for MgB2 phase synthesis
Maurizio Vignolo, Gennaro Romano, Cristina Bernini +2
In this paper we report a new synthesis route to produce boron powders characterized as being amorphous and having very fine particle size. This route has been developed to improve…
High temperature heat treatment of B precursor and P.I.T. process optimization to increase Jc performances of MgB2-based conductor
Maurizio Vignolo, Gianmarco Bovone, Cristina Bernini +4
Promising results reported in our previous works led us to think that production of B powder plays a crucial role in MgB2 synthesis. A new method for boron preparation has been dev…
Large critical current density improvement in Bi-2212 wires through groove-rolling process
Andrea Malagoli, Cristina Bernini, Valeria Braccini +4
Recently the interest about Bi-2212 round wire superconductor for high magnetic field use has been enhancing despite the fact that an increase of the critical current is still need…