13 papers · 1 filter
Magnetic instabilities in quasi-one-dimensional Cr-based material
Armando Galluzzi, Giuseppe Cuono, Alfonso Romano +4
The magnetic response of a K2Cr3As3 sample has been studied by means of dc magnetization measurements as a function of magnetic field (H) at different temperatures ranging from 5 K…
Granularity and vortex dynamics in LaO_0.92F_0.08FeAs as probed by harmonics of the AC magnetic susceptibility
Maria G. Adesso, Danilo Zola, Jianlin Luo +6
Fundamental and higher harmonics of the AC magnetic susceptibility have been measured on a LaO_0.92F_0.08FeAs sample as a function of the temperature, at various amplitudes and fre…
A new method to detect the vortex glass phase and its evidence in YBCO
M G Adesso, M Polichetti, S Pace
The Vortex Glass phase has been unequivocally identified by analyzing the non linear magnetic response of type II superconductors. The method here introduced, more effective than t…
New aspects in the Bragg Glass-Disordered phase transition: an analysis based on the 3rd harmonics of the AC magnetic susceptibility
M. G. Adesso, R. Flukiger, T. Giamarchi +5
We analyse the phase transition between the Bragg Glass and the Disordered phase in the vortex lattice in type-II superconductors, both by analytical computations and experimental…
H(T) Phase Diagram in Nb3Sn: A Different Behavior in Single Crystals, Polycristalline Samples and Multifilamentary Wires
M. G. Adesso, D. Uglietti, R. Fluekiger +2
A comparative study of magnetic behavior in a DC magnetic field up to 19 Tesla has been undertaken on different Nb3Sn samples, i.e. single crystals, polycrystal samples and multifi…
Phase transition between the Bragg Glass and a disordered Phase in Nb3Sn, detected by 3rd harmonics of the AC magnetic susceptibility
Maria G. Adesso, Davide Uglietti, Rene Flukiger +2
We report additional experimental evidences about the presence of an universal behavior in the Field-Temperature Phase Diagram of Type II Superconductors. This behavior is characte…