1. Department of Physics Faculty of Science University of Guilan P.O. Box: 41335‐1914 Rasht Iran
2. High‐Temperature Fuel Cell Research Department Vali‐e‐Asr University of Rafsanjan Rafsanjan 1599637111 Iran
3. Department of Chemistry Payame Noor University (PNU) Tehran 19395‐4697 Iran
4. Department of Physics “E. R. Caianiello” and “Interdepartmental center NANOMATES” University of Salerno Fisciano Salerno 84084 Italy