69 citations · 251 across the 9 of their papers we have counts for
8 papers · 1 filter
Microwave surface resistance of Tl-1223 films in a dc magnetic field
Alessandro Magalotti, Andrea Alimenti, Emilio Bellingeri +8
We present first preliminary surface impedance measurements on Tl-1223 films in dc magnetic fields, in view of potential applications for the next generation Future Circular Collid…
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…
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…
A new approach for improving global critical current density in Fe(Se0.5Te0.5) polycrystalline materials
A. Palenzona, A. Sala, C. Bernini +13
A novel method to prepare bulk Fe(Se0.5Te0.5) samples is presented, based on a melting process and a subsequent annealing treatment. With respect to the standard sintering techniqu…
Study of the MgB2 grain size role in ex-situ multifilamentary wires with thin filaments
A. Malagoli, V. Braccini, C. Bernini +4
The MgB2 superconductor has already demonstrated its applicative potential, in particular for DC applications such as MRI magnets, thanks to the low costs of the raw materials and…
Synthesis, crystal structure, microstructure, transport and magnetic properties of SmFeAsO and SmFeAs(O0.93F0.07)
A. Martinelli, M. Ferretti, P. Manfrinetti +7
SmFeAsO and the isostructural superconducting SmFeAs(O0.93F0.07) samples were prepared. Characterization by means of Rietveld refinement of X-ray powder diffraction data, scanning…