166 citations · 333 across the 14 of their papers we have counts for
14 papers · 1 filter
Microwave Response of Coaxial Cavities Made of Bulk Magnesium Diboride
A. Agliolo Gallitto, P. Camarda, M. Li Vigni +3
We report on the microwave (mw) properties of coaxial cavities built by using bulk MgB2 superconductor prepared by reactive liquid Mg infiltration technology. We have assembled a h…
Carrier Transport in Magnesium Diboride: Role of Nano-inclusions
A. M. Awasthi, S. Bhardwaj, V. P. S. Awana +3
Anisotropic-gap and two-band effects smear out the superconducting transition (Tc) in literature reported thermal conductivity of MgB2, where large electronic contributions also su…
Microwave response of a cylindrical cavity made of bulk MgB2 superconductor
A. Agliolo Gallitto, G. Bonsignore, M. Li Vigni +2
We report on the microwave properties of a resonant cylindrical cavity made of bulk MgB2 superconductor, produced by the reactive liquid Mg infiltration process. The frequency resp…
Superconducting Microwave Cavity Made of Bulk MgB2
G. Giunchi, A. Agliolo Gallitto, G. Bonsignore +2
We report the successful manufacture and characterization of a microwave resonant cylindrical cavity made of bulk MgB2 superconductor (Tc = 38.5 K), which has been produced by the…
Effects of Weak Links in the Nonlinear Microwave Response of MgB2 Superconductor
A. Agliolo Gallitto, G. Bonsignore, G. Giunchi +1
We 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 invest…
Near-Tc second-harmonic emission in high-density bulk MgB2 at microwave frequency
A. Agliolo Gallitto, G. Bonsignore, G. Giunchi +1
We discuss the microwave second-harmonic generation in high-density bulk MgB2, prepared by the reactive liquid Mg infiltration technology. The intensity of the harmonic signal has…
Microwave Harmonic Emission in MgB2 Superconductor: Comparison with YBaCuO
A. Agliolo Gallitto, G. Bonsignore, E. Di Gennaro +3
We report results of microwave second-harmonic generation in ceramic samples of MgB2, prepared by different methods. The SH signal has been investigated as a function of the temper…
Microwave response of bulk MgB2 samples of different granularity
A. Agliolo Gallitto, G. Bonsignore, G. Giunchi +2
The microwave response of three high-density bulk MgB2 samples has been investigated in the linear and nonlinear regimes. The three samples, characterized by different mean size of…
Surface-Barrier Effects in the Microwave Second-Harmonic Response of Superconductors in the Mixed State
A. Agliolo Gallitto, G. Giunchi, Li Vigni +1
We report on transient effects in the microwave second-order response of different type of superconductors in the mixed state. The samples have contemporarily been exposed to a dc…
Fluxon dynamics by microwave surface resistance measurements in MgB2
A. Agliolo Gallitto, M. Bonura, S. Fricano +2
Field-induced variations of the microwave surface resistance, Rs(H), have been investigated in high-density ceramic MgB2. At low temperatures, several peculiarities of the Rs(H) cu…
Superconducting Properties of Highly Dense MgB2 Bulk Materials
G. Giunchi, S. Ceresara, L. Martini +3
Highly dense MgB2 policrystalline bulk materials, obtained by reactive liquid infiltration, have been characterized in their superconducting transport and magnetic properties in ma…
High Density MgB2 Obtained by Reactive Liquid Mg Infiltration
Giovanni Giunchi
A new route to the sintering of MgB2 has been identified, based on a reactive infiltration of liquid Mg on a powdered B preform. The technique allows to obtain large bulk manufacts…
High performance new MgB2 superconducting hollow wires
G. Giunchi, S. Ceresara, G. Ripamonti +6
MgB2 hollow wires have been produced with a new technique which uses a conventional wire manufacturing process but is applied to composite billets containing the elemental B and Mg…
Electrodynamic response of MgB2 sintered pellets and thin films
A. Andreone, G. Ausanio, E. Di Gennaro +8
We present a study of the electrodynamic response of MgB2 pellets and thin film samples exhibiting critical temperatures ranging between 26 and 38 K. We have performed accurate mea…