1. Department of Physics “Ettore Pancini”, University of Naples Federico II, Naples 80126, Italy
2. Department of Food Inspection, Istituto Zooprofilattico Sperimentale del Mezzogiorno, Portici (Naples) 80055, Italy
3. Department of Agronomy, University of Naples “Federico II”, Portici (Naples) 80055, Italy
4. Department of Chemical Sciences, University of Naples Federico II, Naples 80126, Italy
5. Institute for Superconductors, Oxides and Other Innovative Materials and Devices of the National Research Council (CNR-SPIN), Piazzale V. Tecchio 80, 80125 Naples, Italy