1. Faculty of EducationDepartment of Mathematical and Natural Science EducationCumhuriyet University58140SivasTurkey
2. Faculty of ScienceDepartment of PhysicsCumhuriyet University58140SivasTurkey
3. Faculty of SciencePhysics DepartmentDokuz Eylul University35390IzmirTurkey
4. Grupo de Materia Condensada‐UdeAInstituto de FsicaFacultad de Ciencias Exactas y NaturalesUniversidad de Antioquia UdeACalle 70 No. 52‐21MedellnColombia