1. Faculty of Natural Sciences, Quy Nhon University, 170 An Duong Vuong, Quy Nhon 55000, Vietnam
2. Faculty of Materials Science and Engineering, Phenikaa University, Hanoi 12116, Vietnam
3. Faculty of Engineering and Technology, Quy Nhon University, 170 An Duong Vuong, Quy Nhon 55000, Vietnam