1. Nanotechnology & advanced material research centerUniversity of Technology Baghdad Iraq
2. Applied sciences departmentUniversity of Technology Baghdad Iraq
3. Institute for Superconducting and Electronic Materials (ISEM)University of Wollongong Wollongong, NSW 2525 Australia
4. Low Dimensional Materials Research CentreDepartment of Physics, Faculty of Science, University of Malaya 50603 Kuala Lumpur Malaysia