1. Department of Materials Science and Engineering, National Yang-Ming Chiao Tung University, Hsinchu 300093, Taiwan
2. Institute of Pioneer Semiconductor Innovation, National Yang-Ming Chiao Tung University, Hsinchu 30010, Taiwan
3. International College of Semiconductor Technology, National Yang-Ming Chiao Tung University, Hsinchu 30010, Taiwan
4. Magnetics and Advanced Ceramics Lab, Department of Physics, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
5. Division of Physics, Institute of Nuclear Energy Research, Taoyuan 32546, Taiwan