1. Department of Inorganic Polymers “Petru Poni” Institute of Macromolecular Chemistry Aleea Gr. Ghica Voda 41A Iasi 700487 Romania
2. Faculty of Physics Alexandru Ioan Cuza University of Iasi Blvd. Carol I no. 11 Iași 700506 Romania
3. Laboratoire National des Champs Magnétiques Intenses CNRS UPR 3228 25 Rue des Martyrs Grenoble 38042 France
4. Elettra‐Sincrotrone Trieste S.C.p.A. Strada Statale 14‐km 163,5 in AREA Science Park Trieste Basovizza 34149 Italy