1. Consiglio Nazionale delle Ricerche (CNR)‐ Istituto Officina dei Materiali (IOM) Area Science Park S.S. 14 km 163.5 Trieste 34149 Italy
2. Basic Sciences Department Faculty of Sciences Erzurum Technical University Erzurum 25050 Turkey
3. Department of Physical and Chemical Sciences University of L'Aquila via Vetoio L'Aquila (AQ) 67100 Italy
4. National Institute of Materials Physics Atomistilor 405A Magurele 077125 Romania
5. Elettra‐Sincrotrone S.C.p.A S.S. 14‐km 163.5 in AREA Science Park Trieste 34149 Italy
6. Charles University V Holešovičkách 2, Prague 8 Prague 18000 Czech Republic
7. Department of Environmental Engineering (DIAM) University of Calabria Via Pietro Bucci cubo 44A Rende (CS) 87036 Italy
8. Department of Physics Faculty of Sciences Atatürk University Erzurum 25240 Turkey
9. College of Science Institute of Materials Physics and Chemistry Nanjing Forestry University Nanjing 210037 P. R. China