48 citations · 178 across the 7 of their papers we have counts for
4 papers · 1 filter
Effective ferromagnetic coupling between a superconductor and a ferromagnet in LaCaMnO/Nb hybrids
D. Stamopoulos, N. Moutis, M. Pissas +1
In this work we present magnetization data on hybrids consisting of multilayers (MLs) of man- ganites [La0.33Ca0.67MnO3/La0.60Ca0.40MnO3]15 in contact with a low-Tc Nb superconduct…
Relaxation measurements in the regime of the second magnetization peak in Nb films
D. Stamopoulos, D. Niarchos
We report on magnetic measurements as a function of field, temperature and time (relaxation) in superconducting Nb films of critical temperature Tc = 9.25 K. The magnetic measureme…
From the second magnetization peak to peak effect. A study of superconducting properties in Nb films and MgB2 bulk samples
Dimosthenis Stamopoulos, Athanasios Speliotis, Dimitris Niarchos
We report on magnetic and magnetoresistance measurements in two categories of superconducting Nb films grown via magnetron sputtering and MgB2 bulk samples. In the first category,…
Influence of randomly distributed magnetic nanoparticles on surface superconductivity in Nb films
D. Stamopoulos, M. Pissas, V. Karanasos +2
We report on combined resistance and magnetic measurements in a hybrid structure (HS) of randomly distributed anisotropic CoPt magnetic nanoparticles (MN) embedded in a 160 nm Nb t…