1. Department of Metallurgical and Materials Engineering , Faculty of Technology, Sakarya University, 54187, Sakarya , Turkey; e-mail:
2. Biomedical Magnetic Semi-Conductor Materials Research and Application Center , Sakarya University, 54187 , Turkey
3. Department of Metallurgical and Materials Engineering , Engineering Faculty, Sakarya University, 54187, Sakarya , Turkey